diff --git a/.gitignore b/.gitignore index 7d03b965..1a2dd675 100644 --- a/.gitignore +++ b/.gitignore @@ -1,5 +1,6 @@ # Byte-compiled / optimized / DLL files __pycache__/ +.ipynb_checkpoints/ *.py[cod] *$py.class diff --git a/deploy/cpp_infer/CMakeLists.txt b/deploy/cpp_infer/CMakeLists.txt new file mode 100644 index 00000000..282b245d --- /dev/null +++ b/deploy/cpp_infer/CMakeLists.txt @@ -0,0 +1,110 @@ +project(ocr_system CXX C) +option(WITH_MKL "Compile demo with MKL/OpenBlas support, default use MKL." ON) +option(WITH_GPU "Compile demo with GPU/CPU, default use CPU." OFF) +option(WITH_STATIC_LIB "Compile demo with static/shared library, default use static." ON) +option(USE_TENSORRT "Compile demo with TensorRT." OFF) + + +macro(safe_set_static_flag) + foreach(flag_var + CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_RELEASE + CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO) + if(${flag_var} MATCHES "/MD") + string(REGEX REPLACE "/MD" "/MT" ${flag_var} "${${flag_var}}") + endif(${flag_var} MATCHES "/MD") + endforeach(flag_var) +endmacro() + +set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -g -fpermissive") +set(CMAKE_STATIC_LIBRARY_PREFIX "") +message("flags" ${CMAKE_CXX_FLAGS}) +set(CMAKE_CXX_FLAGS_RELEASE "-O3") + +if(NOT DEFINED PADDLE_LIB) + message(FATAL_ERROR "please set PADDLE_LIB with -DPADDLE_LIB=/path/paddle/lib") +endif() +if(NOT DEFINED DEMO_NAME) + message(FATAL_ERROR "please set DEMO_NAME with -DDEMO_NAME=demo_name") +endif() + +# user ze +# find_package(OpenCV) + + +set(OPENCV_DIR "/paddle/libs/opencv-3.4.7/opencv3") +find_package(OpenCV REQUIRED PATHS ${OPENCV_DIR}/share/OpenCV NO_DEFAULT_PATH) +include_directories(${OpenCV_INCLUDE_DIRS}) + +include_directories("${PADDLE_LIB}/paddle/include") +include_directories("${PADDLE_LIB}/third_party/install/protobuf/include") +include_directories("${PADDLE_LIB}/third_party/install/glog/include") +include_directories("${PADDLE_LIB}/third_party/install/gflags/include") +include_directories("${PADDLE_LIB}/third_party/install/xxhash/include") +include_directories("${PADDLE_LIB}/third_party/install/zlib/include") +include_directories("${PADDLE_LIB}/third_party/boost") +include_directories("${PADDLE_LIB}/third_party/eigen3") + +include_directories("${CMAKE_SOURCE_DIR}/") + +if (USE_TENSORRT AND WITH_GPU) + include_directories("${TENSORRT_ROOT}/include") + link_directories("${TENSORRT_ROOT}/lib") +endif() + +link_directories("${PADDLE_LIB}/third_party/install/zlib/lib") + +link_directories("${PADDLE_LIB}/third_party/install/protobuf/lib") +link_directories("${PADDLE_LIB}/third_party/install/glog/lib") +link_directories("${PADDLE_LIB}/third_party/install/gflags/lib") +link_directories("${PADDLE_LIB}/third_party/install/xxhash/lib") +link_directories("${PADDLE_LIB}/paddle/lib") + + +add_executable(${DEMO_NAME} src/main.cpp src/ocr_det.cpp src/ocr_rec.cpp src/preprocess_op.cpp src/clipper.cpp src/postprocess_op.cpp ) + +if(WITH_MKL) + include_directories("${PADDLE_LIB}/third_party/install/mklml/include") + set(MATH_LIB ${PADDLE_LIB}/third_party/install/mklml/lib/libmklml_intel${CMAKE_SHARED_LIBRARY_SUFFIX} + ${PADDLE_LIB}/third_party/install/mklml/lib/libiomp5${CMAKE_SHARED_LIBRARY_SUFFIX}) + set(MKLDNN_PATH "${PADDLE_LIB}/third_party/install/mkldnn") + if(EXISTS ${MKLDNN_PATH}) + include_directories("${MKLDNN_PATH}/include") + set(MKLDNN_LIB ${MKLDNN_PATH}/lib/libmkldnn.so.0) + endif() +else() + set(MATH_LIB ${PADDLE_LIB}/third_party/install/openblas/lib/libopenblas${CMAKE_STATIC_LIBRARY_SUFFIX}) +endif() + +# Note: libpaddle_inference_api.so/a must put before libpaddle_fluid.so/a +if(WITH_STATIC_LIB) + set(DEPS + ${PADDLE_LIB}/paddle/lib/libpaddle_fluid${CMAKE_STATIC_LIBRARY_SUFFIX}) +else() + set(DEPS + ${PADDLE_LIB}/paddle/lib/libpaddle_fluid${CMAKE_SHARED_LIBRARY_SUFFIX}) +endif() + +# user ze +# set(EXTERNAL_LIB "-lrt -ldl -lpthread -lm -lopencv_world") +# gry +set(EXTERNAL_LIB "-lrt -ldl -lpthread -lm") + +set(DEPS ${DEPS} + ${MATH_LIB} ${MKLDNN_LIB} + glog gflags protobuf z xxhash + ${EXTERNAL_LIB} ${OpenCV_LIBS}) + +if(WITH_GPU) + if (USE_TENSORRT) + set(DEPS ${DEPS} + ${TENSORRT_ROOT}/lib/libnvinfer${CMAKE_SHARED_LIBRARY_SUFFIX}) + set(DEPS ${DEPS} + ${TENSORRT_ROOT}/lib/libnvinfer_plugin${CMAKE_SHARED_LIBRARY_SUFFIX}) + endif() + set(DEPS ${DEPS} ${CUDA_LIB}/libcudart${CMAKE_SHARED_LIBRARY_SUFFIX}) + set(DEPS ${DEPS} ${CUDA_LIB}/libcudart${CMAKE_SHARED_LIBRARY_SUFFIX} ) + set(DEPS ${DEPS} ${CUDA_LIB}/libcublas${CMAKE_SHARED_LIBRARY_SUFFIX} ) + set(DEPS ${DEPS} ${CUDNN_LIB}/libcudnn${CMAKE_SHARED_LIBRARY_SUFFIX} ) +endif() + +target_link_libraries(${DEMO_NAME} ${DEPS}) diff --git a/deploy/cpp_infer/include/clipper.h b/deploy/cpp_infer/include/clipper.h new file mode 100644 index 00000000..384a6cf4 --- /dev/null +++ b/deploy/cpp_infer/include/clipper.h @@ -0,0 +1,423 @@ +/******************************************************************************* +* * +* Author : Angus Johnson * +* Version : 6.4.2 * +* Date : 27 February 2017 * +* Website : http://www.angusj.com * +* Copyright : Angus Johnson 2010-2017 * +* * +* License: * +* Use, modification & distribution is subject to Boost Software License Ver 1. * +* http://www.boost.org/LICENSE_1_0.txt * +* * +* Attributions: * +* The code in this library is an extension of Bala Vatti's clipping algorithm: * +* "A generic solution to polygon clipping" * +* Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63. * +* http://portal.acm.org/citation.cfm?id=129906 * +* * +* Computer graphics and geometric modeling: implementation and algorithms * +* By Max K. Agoston * +* Springer; 1 edition (January 4, 2005) * +* http://books.google.com/books?q=vatti+clipping+agoston * +* * +* See also: * +* "Polygon Offsetting by Computing Winding Numbers" * +* Paper no. DETC2005-85513 pp. 565-575 * +* ASME 2005 International Design Engineering Technical Conferences * +* and Computers and Information in Engineering Conference (IDETC/CIE2005) * +* September 24-28, 2005 , Long Beach, California, USA * +* http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf * +* * +*******************************************************************************/ + +#ifndef clipper_hpp +#define clipper_hpp + +#define CLIPPER_VERSION "6.4.2" + +// use_int32: When enabled 32bit ints are used instead of 64bit ints. This +// improve performance but coordinate values are limited to the range +/- 46340 +//#define use_int32 + +// use_xyz: adds a Z member to IntPoint. Adds a minor cost to perfomance. +//#define use_xyz + +// use_lines: Enables line clipping. Adds a very minor cost to performance. +#define use_lines + +// use_deprecated: Enables temporary support for the obsolete functions +//#define use_deprecated + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +namespace ClipperLib { + +enum ClipType { ctIntersection, ctUnion, ctDifference, ctXor }; +enum PolyType { ptSubject, ptClip }; +// By far the most widely used winding rules for polygon filling are +// EvenOdd & NonZero (GDI, GDI+, XLib, OpenGL, Cairo, AGG, Quartz, SVG, Gr32) +// Others rules include Positive, Negative and ABS_GTR_EQ_TWO (only in OpenGL) +// see http://glprogramming.com/red/chapter11.html +enum PolyFillType { pftEvenOdd, pftNonZero, pftPositive, pftNegative }; + +#ifdef use_int32 +typedef int cInt; +static cInt const loRange = 0x7FFF; +static cInt const hiRange = 0x7FFF; +#else +typedef signed long long cInt; +static cInt const loRange = 0x3FFFFFFF; +static cInt const hiRange = 0x3FFFFFFFFFFFFFFFLL; +typedef signed long long long64; // used by Int128 class +typedef unsigned long long ulong64; + +#endif + +struct IntPoint { + cInt X; + cInt Y; +#ifdef use_xyz + cInt Z; + IntPoint(cInt x = 0, cInt y = 0, cInt z = 0) : X(x), Y(y), Z(z){}; +#else + IntPoint(cInt x = 0, cInt y = 0) : X(x), Y(y){}; +#endif + + friend inline bool operator==(const IntPoint &a, const IntPoint &b) { + return a.X == b.X && a.Y == b.Y; + } + friend inline bool operator!=(const IntPoint &a, const IntPoint &b) { + return a.X != b.X || a.Y != b.Y; + } +}; +//------------------------------------------------------------------------------ + +typedef std::vector Path; +typedef std::vector Paths; + +inline Path &operator<<(Path &poly, const IntPoint &p) { + poly.push_back(p); + return poly; +} +inline Paths &operator<<(Paths &polys, const Path &p) { + polys.push_back(p); + return polys; +} + +std::ostream &operator<<(std::ostream &s, const IntPoint &p); +std::ostream &operator<<(std::ostream &s, const Path &p); +std::ostream &operator<<(std::ostream &s, const Paths &p); + +struct DoublePoint { + double X; + double Y; + DoublePoint(double x = 0, double y = 0) : X(x), Y(y) {} + DoublePoint(IntPoint ip) : X((double)ip.X), Y((double)ip.Y) {} +}; +//------------------------------------------------------------------------------ + +#ifdef use_xyz +typedef void (*ZFillCallback)(IntPoint &e1bot, IntPoint &e1top, IntPoint &e2bot, + IntPoint &e2top, IntPoint &pt); +#endif + +enum InitOptions { + ioReverseSolution = 1, + ioStrictlySimple = 2, + ioPreserveCollinear = 4 +}; +enum JoinType { jtSquare, jtRound, jtMiter }; +enum EndType { + etClosedPolygon, + etClosedLine, + etOpenButt, + etOpenSquare, + etOpenRound +}; + +class PolyNode; +typedef std::vector PolyNodes; + +class PolyNode { +public: + PolyNode(); + virtual ~PolyNode(){}; + Path Contour; + PolyNodes Childs; + PolyNode *Parent; + PolyNode *GetNext() const; + bool IsHole() const; + bool IsOpen() const; + int ChildCount() const; + +private: + // PolyNode& operator =(PolyNode& other); + unsigned Index; // node index in Parent.Childs + bool m_IsOpen; + JoinType m_jointype; + EndType m_endtype; + PolyNode *GetNextSiblingUp() const; + void AddChild(PolyNode &child); + friend class Clipper; // to access Index + friend class ClipperOffset; +}; + +class PolyTree : public PolyNode { +public: + ~PolyTree() { Clear(); }; + PolyNode *GetFirst() const; + void Clear(); + int Total() const; + +private: + // PolyTree& operator =(PolyTree& other); + PolyNodes AllNodes; + friend class Clipper; // to access AllNodes +}; + +bool Orientation(const Path &poly); +double Area(const Path &poly); +int PointInPolygon(const IntPoint &pt, const Path &path); + +void SimplifyPolygon(const Path &in_poly, Paths &out_polys, + PolyFillType fillType = pftEvenOdd); +void SimplifyPolygons(const Paths &in_polys, Paths &out_polys, + PolyFillType fillType = pftEvenOdd); +void SimplifyPolygons(Paths &polys, PolyFillType fillType = pftEvenOdd); + +void CleanPolygon(const Path &in_poly, Path &out_poly, double distance = 1.415); +void CleanPolygon(Path &poly, double distance = 1.415); +void CleanPolygons(const Paths &in_polys, Paths &out_polys, + double distance = 1.415); +void CleanPolygons(Paths &polys, double distance = 1.415); + +void MinkowskiSum(const Path &pattern, const Path &path, Paths &solution, + bool pathIsClosed); +void MinkowskiSum(const Path &pattern, const Paths &paths, Paths &solution, + bool pathIsClosed); +void MinkowskiDiff(const Path &poly1, const Path &poly2, Paths &solution); + +void PolyTreeToPaths(const PolyTree &polytree, Paths &paths); +void ClosedPathsFromPolyTree(const PolyTree &polytree, Paths &paths); +void OpenPathsFromPolyTree(PolyTree &polytree, Paths &paths); + +void ReversePath(Path &p); +void ReversePaths(Paths &p); + +struct IntRect { + cInt left; + cInt top; + cInt right; + cInt bottom; +}; + +// enums that are used internally ... +enum EdgeSide { esLeft = 1, esRight = 2 }; + +// forward declarations (for stuff used internally) ... +struct TEdge; +struct IntersectNode; +struct LocalMinimum; +struct OutPt; +struct OutRec; +struct Join; + +typedef std::vector PolyOutList; +typedef std::vector EdgeList; +typedef std::vector JoinList; +typedef std::vector IntersectList; + +//------------------------------------------------------------------------------ + +// ClipperBase is the ancestor to the Clipper class. It should not be +// instantiated directly. This class simply abstracts the conversion of sets of +// polygon coordinates into edge objects that are stored in a LocalMinima list. +class ClipperBase { +public: + ClipperBase(); + virtual ~ClipperBase(); + virtual bool AddPath(const Path &pg, PolyType PolyTyp, bool Closed); + bool AddPaths(const Paths &ppg, PolyType PolyTyp, bool Closed); + virtual void Clear(); + IntRect GetBounds(); + bool PreserveCollinear() { return m_PreserveCollinear; }; + void PreserveCollinear(bool value) { m_PreserveCollinear = value; }; + +protected: + void DisposeLocalMinimaList(); + TEdge *AddBoundsToLML(TEdge *e, bool IsClosed); + virtual void Reset(); + TEdge *ProcessBound(TEdge *E, bool IsClockwise); + void InsertScanbeam(const cInt Y); + bool PopScanbeam(cInt &Y); + bool LocalMinimaPending(); + bool PopLocalMinima(cInt Y, const LocalMinimum *&locMin); + OutRec *CreateOutRec(); + void DisposeAllOutRecs(); + void DisposeOutRec(PolyOutList::size_type index); + void SwapPositionsInAEL(TEdge *edge1, TEdge *edge2); + void DeleteFromAEL(TEdge *e); + void UpdateEdgeIntoAEL(TEdge *&e); + + typedef std::vector MinimaList; + MinimaList::iterator m_CurrentLM; + MinimaList m_MinimaList; + + bool m_UseFullRange; + EdgeList m_edges; + bool m_PreserveCollinear; + bool m_HasOpenPaths; + PolyOutList m_PolyOuts; + TEdge *m_ActiveEdges; + + typedef std::priority_queue ScanbeamList; + ScanbeamList m_Scanbeam; +}; +//------------------------------------------------------------------------------ + +class Clipper : public virtual ClipperBase { +public: + Clipper(int initOptions = 0); + bool Execute(ClipType clipType, Paths &solution, + PolyFillType fillType = pftEvenOdd); + bool Execute(ClipType clipType, Paths &solution, PolyFillType subjFillType, + PolyFillType clipFillType); + bool Execute(ClipType clipType, PolyTree &polytree, + PolyFillType fillType = pftEvenOdd); + bool Execute(ClipType clipType, PolyTree &polytree, PolyFillType subjFillType, + PolyFillType clipFillType); + bool ReverseSolution() { return m_ReverseOutput; }; + void ReverseSolution(bool value) { m_ReverseOutput = value; }; + bool StrictlySimple() { return m_StrictSimple; }; + void StrictlySimple(bool value) { m_StrictSimple = value; }; +// set the callback function for z value filling on intersections (otherwise Z +// is 0) +#ifdef use_xyz + void ZFillFunction(ZFillCallback zFillFunc); +#endif +protected: + virtual bool ExecuteInternal(); + +private: + JoinList m_Joins; + JoinList m_GhostJoins; + IntersectList m_IntersectList; + ClipType m_ClipType; + typedef std::list MaximaList; + MaximaList m_Maxima; + TEdge *m_SortedEdges; + bool m_ExecuteLocked; + PolyFillType m_ClipFillType; + PolyFillType m_SubjFillType; + bool m_ReverseOutput; + bool m_UsingPolyTree; + bool m_StrictSimple; +#ifdef use_xyz + ZFillCallback m_ZFill; // custom callback +#endif + void SetWindingCount(TEdge &edge); + bool IsEvenOddFillType(const TEdge &edge) const; + bool IsEvenOddAltFillType(const TEdge &edge) const; + void InsertLocalMinimaIntoAEL(const cInt botY); + void InsertEdgeIntoAEL(TEdge *edge, TEdge *startEdge); + void AddEdgeToSEL(TEdge *edge); + bool PopEdgeFromSEL(TEdge *&edge); + void CopyAELToSEL(); + void DeleteFromSEL(TEdge *e); + void SwapPositionsInSEL(TEdge *edge1, TEdge *edge2); + bool IsContributing(const TEdge &edge) const; + bool IsTopHorz(const cInt XPos); + void DoMaxima(TEdge *e); + void ProcessHorizontals(); + void ProcessHorizontal(TEdge *horzEdge); + void AddLocalMaxPoly(TEdge *e1, TEdge *e2, const IntPoint &pt); + OutPt *AddLocalMinPoly(TEdge *e1, TEdge *e2, const IntPoint &pt); + OutRec *GetOutRec(int idx); + void AppendPolygon(TEdge *e1, TEdge *e2); + void IntersectEdges(TEdge *e1, TEdge *e2, IntPoint &pt); + OutPt *AddOutPt(TEdge *e, const IntPoint &pt); + OutPt *GetLastOutPt(TEdge *e); + bool ProcessIntersections(const cInt topY); + void BuildIntersectList(const cInt topY); + void ProcessIntersectList(); + void ProcessEdgesAtTopOfScanbeam(const cInt topY); + void BuildResult(Paths &polys); + void BuildResult2(PolyTree &polytree); + void SetHoleState(TEdge *e, OutRec *outrec); + void DisposeIntersectNodes(); + bool FixupIntersectionOrder(); + void FixupOutPolygon(OutRec &outrec); + void FixupOutPolyline(OutRec &outrec); + bool IsHole(TEdge *e); + bool FindOwnerFromSplitRecs(OutRec &outRec, OutRec *&currOrfl); + void FixHoleLinkage(OutRec &outrec); + void AddJoin(OutPt *op1, OutPt *op2, const IntPoint offPt); + void ClearJoins(); + void ClearGhostJoins(); + void AddGhostJoin(OutPt *op, const IntPoint offPt); + bool JoinPoints(Join *j, OutRec *outRec1, OutRec *outRec2); + void JoinCommonEdges(); + void DoSimplePolygons(); + void FixupFirstLefts1(OutRec *OldOutRec, OutRec *NewOutRec); + void FixupFirstLefts2(OutRec *InnerOutRec, OutRec *OuterOutRec); + void FixupFirstLefts3(OutRec *OldOutRec, OutRec *NewOutRec); +#ifdef use_xyz + void SetZ(IntPoint &pt, TEdge &e1, TEdge &e2); +#endif +}; +//------------------------------------------------------------------------------ + +class ClipperOffset { +public: + ClipperOffset(double miterLimit = 2.0, double roundPrecision = 0.25); + ~ClipperOffset(); + void AddPath(const Path &path, JoinType joinType, EndType endType); + void AddPaths(const Paths &paths, JoinType joinType, EndType endType); + void Execute(Paths &solution, double delta); + void Execute(PolyTree &solution, double delta); + void Clear(); + double MiterLimit; + double ArcTolerance; + +private: + Paths m_destPolys; + Path m_srcPoly; + Path m_destPoly; + std::vector m_normals; + double m_delta, m_sinA, m_sin, m_cos; + double m_miterLim, m_StepsPerRad; + IntPoint m_lowest; + PolyNode m_polyNodes; + + void FixOrientations(); + void DoOffset(double delta); + void OffsetPoint(int j, int &k, JoinType jointype); + void DoSquare(int j, int k); + void DoMiter(int j, int k, double r); + void DoRound(int j, int k); +}; +//------------------------------------------------------------------------------ + +class clipperException : public std::exception { +public: + clipperException(const char *description) : m_descr(description) {} + virtual ~clipperException() throw() {} + virtual const char *what() const throw() { return m_descr.c_str(); } + +private: + std::string m_descr; +}; +//------------------------------------------------------------------------------ + +} // ClipperLib namespace + +#endif // clipper_hpp diff --git a/deploy/cpp_infer/include/ocr_det.h b/deploy/cpp_infer/include/ocr_det.h new file mode 100644 index 00000000..efcaa25c --- /dev/null +++ b/deploy/cpp_infer/include/ocr_det.h @@ -0,0 +1,71 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#pragma once + +#include "opencv2/core.hpp" +#include "opencv2/imgcodecs.hpp" +#include "opencv2/imgproc.hpp" +#include "paddle_api.h" +#include "paddle_inference_api.h" +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +namespace PaddleOCR { + +class DBDetector { +public: + explicit DBDetector(const std::string &model_dir, bool use_gpu = false, + const int gpu_id = 0, const int max_side_len = 960) { + LoadModel(model_dir, use_gpu); + this->max_side_len_ = max_side_len; + } + + // Load Paddle inference model + void LoadModel(const std::string &model_dir, bool use_gpu, + const int min_subgraph_size = 3, const int batch_size = 1, + const int gpu_id = 0); + + // Run predictor + void Run(cv::Mat &img, std::vector>> &boxes); + +private: + std::shared_ptr predictor_; + + int max_side_len_ = 960; + + std::vector mean_ = {0.485f, 0.456f, 0.406f}; + std::vector scale_ = {1 / 0.229f, 1 / 0.224f, 1 / 0.225f}; + bool is_scale_ = true; + + // pre-process + ResizeImgType0 resize_op_; + Normalize normalize_op_; + Permute permute_op_; + + // post-process + PostProcessor post_processor_; +}; + +} // namespace PaddleOCR \ No newline at end of file diff --git a/deploy/cpp_infer/include/ocr_rec.h b/deploy/cpp_infer/include/ocr_rec.h new file mode 100644 index 00000000..50220136 --- /dev/null +++ b/deploy/cpp_infer/include/ocr_rec.h @@ -0,0 +1,81 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "opencv2/core.hpp" +#include "opencv2/imgcodecs.hpp" +#include "opencv2/imgproc.hpp" +#include "paddle_api.h" +#include "paddle_inference_api.h" +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +namespace PaddleOCR { + +class CRNNRecognizer { +public: + explicit CRNNRecognizer(const std::string &model_dir, + const string label_path = "./tools/ppocr_keys_v1.txt", + bool use_gpu = false, const int gpu_id = 0) { + LoadModel(model_dir, use_gpu); + + this->label_list_ = ReadDict(label_path); + } + + // Load Paddle inference model + void LoadModel(const std::string &model_dir, bool use_gpu, + const int gpu_id = 0, const int min_subgraph_size = 3, + const int batch_size = 1); + + void Run(std::vector>> boxes, cv::Mat &img); + +private: + std::shared_ptr predictor_; + + std::vector label_list_; + + std::vector mean_ = {0.5f, 0.5f, 0.5f}; + std::vector scale_ = {1 / 0.5f, 1 / 0.5f, 1 / 0.5f}; + bool is_scale_ = true; + + // pre-process + CrnnResizeImg resize_op_; + Normalize normalize_op_; + Permute permute_op_; + + // post-process + PostProcessor post_processor_; + + cv::Mat get_rotate_crop_image(const cv::Mat &srcimage, + std::vector> box); + + std::vector ReadDict(const std::string &path); + + template + inline size_t argmax(ForwardIterator first, ForwardIterator last) { + return std::distance(first, std::max_element(first, last)); + } + +}; // class CrnnRecognizer + +} // namespace PaddleOCR \ No newline at end of file diff --git a/deploy/cpp_infer/include/postprocess_op.h b/deploy/cpp_infer/include/postprocess_op.h new file mode 100644 index 00000000..d851e29e --- /dev/null +++ b/deploy/cpp_infer/include/postprocess_op.h @@ -0,0 +1,111 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#pragma once + +#include "opencv2/core.hpp" +#include "opencv2/imgcodecs.hpp" +#include "opencv2/imgproc.hpp" +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "include/clipper.h" + +using namespace std; + +namespace PaddleOCR { + +inline std::vector ReadDict(std::string path) { + std::ifstream in(path); + std::string filename; + std::string line; + std::vector m_vec; + if (in) { + while (getline(in, line)) { + m_vec.push_back(line); + } + } else { + std::cout << "no such file" << std::endl; + } + return m_vec; +} + +template +inline size_t Argmax(ForwardIterator first, ForwardIterator last) { + return std::distance(first, std::max_element(first, last)); +} + +class PostProcessor { +public: + void GetContourArea(float **box, float unclip_ratio, float &distance); + + cv::RotatedRect unclip(float **box); + + float **Mat2Vec(cv::Mat mat); + + void quickSort_vector(std::vector> &box, int l, int r, + int axis); + + std::vector> + order_points_clockwise(std::vector> pts); + + float **get_mini_boxes(cv::RotatedRect box, float &ssid); + + float box_score_fast(float **box_array, cv::Mat pred); + + std::vector>> + boxes_from_bitmap(const cv::Mat pred, const cv::Mat bitmap); + + std::vector>> + filter_tag_det_res(std::vector>> boxes, + float ratio_h, float ratio_w, cv::Mat srcimg); + + template + inline size_t argmax(ForwardIterator first, ForwardIterator last) { + return std::distance(first, std::max_element(first, last)); + } + + // CRNN + +private: + void quickSort(float **s, int l, int r); + + inline int _max(int a, int b) { return a >= b ? a : b; } + + inline int _min(int a, int b) { return a >= b ? b : a; } + + template inline T clamp(T x, T min, T max) { + if (x > max) + return max; + if (x < min) + return min; + return x; + } + inline float clampf(float x, float min, float max) { + if (x > max) + return max; + if (x < min) + return min; + return x; + } +}; + +} // namespace PaddleOCR \ No newline at end of file diff --git a/deploy/cpp_infer/include/preprocess_op.h b/deploy/cpp_infer/include/preprocess_op.h new file mode 100644 index 00000000..61f80449 --- /dev/null +++ b/deploy/cpp_infer/include/preprocess_op.h @@ -0,0 +1,60 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#pragma once + +#include "opencv2/core.hpp" +#include "opencv2/imgcodecs.hpp" +#include "opencv2/imgproc.hpp" +#include +#include +#include +#include +#include + +#include +#include +#include + +using namespace std; +using namespace paddle; + +namespace PaddleOCR { + +class Normalize { +public: + virtual void Run(cv::Mat *im, const std::vector &mean, + const std::vector &scale, const bool is_scale = true); +}; + +// RGB -> CHW +class Permute { +public: + virtual void Run(const cv::Mat *im, float *data); +}; + +// RGB -> CHW +class ResizeImgType0 { +public: + virtual void Run(const cv::Mat &img, cv::Mat &resize_img, int max_size_len, + float &ratio_h, float &ratio_w); +}; + +class CrnnResizeImg { +public: + virtual void Run(const cv::Mat &img, cv::Mat &resize_img, float wh_ratio, + const std::vector rec_image_shape = {3, 32, 320}); +}; + +} // namespace PaddleOCR \ No newline at end of file diff --git a/deploy/cpp_infer/src/clipper.cpp b/deploy/cpp_infer/src/clipper.cpp new file mode 100644 index 00000000..b35c25f2 --- /dev/null +++ b/deploy/cpp_infer/src/clipper.cpp @@ -0,0 +1,4380 @@ +/******************************************************************************* +* * +* Author : Angus Johnson * +* Version : 6.4.2 * +* Date : 27 February 2017 * +* Website : http://www.angusj.com * +* Copyright : Angus Johnson 2010-2017 * +* * +* License: * +* Use, modification & distribution is subject to Boost Software License Ver 1. * +* http://www.boost.org/LICENSE_1_0.txt * +* * +* Attributions: * +* The code in this library is an extension of Bala Vatti's clipping algorithm: * +* "A generic solution to polygon clipping" * +* Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63. * +* http://portal.acm.org/citation.cfm?id=129906 * +* * +* Computer graphics and geometric modeling: implementation and algorithms * +* By Max K. Agoston * +* Springer; 1 edition (January 4, 2005) * +* http://books.google.com/books?q=vatti+clipping+agoston * +* * +* See also: * +* "Polygon Offsetting by Computing Winding Numbers" * +* Paper no. DETC2005-85513 pp. 565-575 * +* ASME 2005 International Design Engineering Technical Conferences * +* and Computers and Information in Engineering Conference (IDETC/CIE2005) * +* September 24-28, 2005 , Long Beach, California, USA * +* http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf * +* * +*******************************************************************************/ + +/******************************************************************************* +* * +* This is a translation of the Delphi Clipper library and the naming style * +* used has retained a Delphi flavour. * +* * +*******************************************************************************/ +#include +#include +#include +#include +#include +#include +#include +#include + +#include "include/clipper.h" + +namespace ClipperLib { + +static double const pi = 3.141592653589793238; +static double const two_pi = pi * 2; +static double const def_arc_tolerance = 0.25; + +enum Direction { dRightToLeft, dLeftToRight }; + +static int const Unassigned = -1; // edge not currently 'owning' a solution +static int const Skip = -2; // edge that would otherwise close a path + +#define HORIZONTAL (-1.0E+40) +#define TOLERANCE (1.0e-20) +#define NEAR_ZERO(val) (((val) > -TOLERANCE) && ((val) < TOLERANCE)) + +struct TEdge { + IntPoint Bot; + IntPoint Curr; // current (updated for every new scanbeam) + IntPoint Top; + double Dx; + PolyType PolyTyp; + EdgeSide Side; // side only refers to current side of solution poly + int WindDelta; // 1 or -1 depending on winding direction + int WindCnt; + int WindCnt2; // winding count of the opposite polytype + int OutIdx; + TEdge *Next; + TEdge *Prev; + TEdge *NextInLML; + TEdge *NextInAEL; + TEdge *PrevInAEL; + TEdge *NextInSEL; + TEdge *PrevInSEL; +}; + +struct IntersectNode { + TEdge *Edge1; + TEdge *Edge2; + IntPoint Pt; +}; + +struct LocalMinimum { + cInt Y; + TEdge *LeftBound; + TEdge *RightBound; +}; + +struct OutPt; + +// OutRec: contains a path in the clipping solution. Edges in the AEL will +// carry a pointer to an OutRec when they are part of the clipping solution. +struct OutRec { + int Idx; + bool IsHole; + bool IsOpen; + OutRec *FirstLeft; // see comments in clipper.pas + PolyNode *PolyNd; + OutPt *Pts; + OutPt *BottomPt; +}; + +struct OutPt { + int Idx; + IntPoint Pt; + OutPt *Next; + OutPt *Prev; +}; + +struct Join { + OutPt *OutPt1; + OutPt *OutPt2; + IntPoint OffPt; +}; + +struct LocMinSorter { + inline bool operator()(const LocalMinimum &locMin1, + const LocalMinimum &locMin2) { + return locMin2.Y < locMin1.Y; + } +}; + +//------------------------------------------------------------------------------ +//------------------------------------------------------------------------------ + +inline cInt Round(double val) { + if ((val < 0)) + return static_cast(val - 0.5); + else + return static_cast(val + 0.5); +} +//------------------------------------------------------------------------------ + +inline cInt Abs(cInt val) { return val < 0 ? -val : val; } + +//------------------------------------------------------------------------------ +// PolyTree methods ... +//------------------------------------------------------------------------------ + +void PolyTree::Clear() { + for (PolyNodes::size_type i = 0; i < AllNodes.size(); ++i) + delete AllNodes[i]; + AllNodes.resize(0); + Childs.resize(0); +} +//------------------------------------------------------------------------------ + +PolyNode *PolyTree::GetFirst() const { + if (!Childs.empty()) + return Childs[0]; + else + return 0; +} +//------------------------------------------------------------------------------ + +int PolyTree::Total() const { + int result = (int)AllNodes.size(); + // with negative offsets, ignore the hidden outer polygon ... + if (result > 0 && Childs[0] != AllNodes[0]) + result--; + return result; +} + +//------------------------------------------------------------------------------ +// PolyNode methods ... +//------------------------------------------------------------------------------ + +PolyNode::PolyNode() : Parent(0), Index(0), m_IsOpen(false) {} +//------------------------------------------------------------------------------ + +int PolyNode::ChildCount() const { return (int)Childs.size(); } +//------------------------------------------------------------------------------ + +void PolyNode::AddChild(PolyNode &child) { + unsigned cnt = (unsigned)Childs.size(); + Childs.push_back(&child); + child.Parent = this; + child.Index = cnt; +} +//------------------------------------------------------------------------------ + +PolyNode *PolyNode::GetNext() const { + if (!Childs.empty()) + return Childs[0]; + else + return GetNextSiblingUp(); +} +//------------------------------------------------------------------------------ + +PolyNode *PolyNode::GetNextSiblingUp() const { + if (!Parent) // protects against PolyTree.GetNextSiblingUp() + return 0; + else if (Index == Parent->Childs.size() - 1) + return Parent->GetNextSiblingUp(); + else + return Parent->Childs[Index + 1]; +} +//------------------------------------------------------------------------------ + +bool PolyNode::IsHole() const { + bool result = true; + PolyNode *node = Parent; + while (node) { + result = !result; + node = node->Parent; + } + return result; +} +//------------------------------------------------------------------------------ + +bool PolyNode::IsOpen() const { return m_IsOpen; } +//------------------------------------------------------------------------------ + +#ifndef use_int32 + +//------------------------------------------------------------------------------ +// Int128 class (enables safe math on signed 64bit integers) +// eg Int128 val1((long64)9223372036854775807); //ie 2^63 -1 +// Int128 val2((long64)9223372036854775807); +// Int128 val3 = val1 * val2; +// val3.AsString => "85070591730234615847396907784232501249" (8.5e+37) +//------------------------------------------------------------------------------ + +class Int128 { +public: + ulong64 lo; + long64 hi; + + Int128(long64 _lo = 0) { + lo = (ulong64)_lo; + if (_lo < 0) + hi = -1; + else + hi = 0; + } + + Int128(const Int128 &val) : lo(val.lo), hi(val.hi) {} + + Int128(const long64 &_hi, const ulong64 &_lo) : lo(_lo), hi(_hi) {} + + Int128 &operator=(const long64 &val) { + lo = (ulong64)val; + if (val < 0) + hi = -1; + else + hi = 0; + return *this; + } + + bool operator==(const Int128 &val) const { + return (hi == val.hi && lo == val.lo); + } + + bool operator!=(const Int128 &val) const { return !(*this == val); } + + bool operator>(const Int128 &val) const { + if (hi != val.hi) + return hi > val.hi; + else + return lo > val.lo; + } + + bool operator<(const Int128 &val) const { + if (hi != val.hi) + return hi < val.hi; + else + return lo < val.lo; + } + + bool operator>=(const Int128 &val) const { return !(*this < val); } + + bool operator<=(const Int128 &val) const { return !(*this > val); } + + Int128 &operator+=(const Int128 &rhs) { + hi += rhs.hi; + lo += rhs.lo; + if (lo < rhs.lo) + hi++; + return *this; + } + + Int128 operator+(const Int128 &rhs) const { + Int128 result(*this); + result += rhs; + return result; + } + + Int128 &operator-=(const Int128 &rhs) { + *this += -rhs; + return *this; + } + + Int128 operator-(const Int128 &rhs) const { + Int128 result(*this); + result -= rhs; + return result; + } + + Int128 operator-() const // unary negation + { + if (lo == 0) + return Int128(-hi, 0); + else + return Int128(~hi, ~lo + 1); + } + + operator double() const { + const double shift64 = 18446744073709551616.0; // 2^64 + if (hi < 0) { + if (lo == 0) + return (double)hi * shift64; + else + return -(double)(~lo + ~hi * shift64); + } else + return (double)(lo + hi * shift64); + } +}; +//------------------------------------------------------------------------------ + +Int128 Int128Mul(long64 lhs, long64 rhs) { + bool negate = (lhs < 0) != (rhs < 0); + + if (lhs < 0) + lhs = -lhs; + ulong64 int1Hi = ulong64(lhs) >> 32; + ulong64 int1Lo = ulong64(lhs & 0xFFFFFFFF); + + if (rhs < 0) + rhs = -rhs; + ulong64 int2Hi = ulong64(rhs) >> 32; + ulong64 int2Lo = ulong64(rhs & 0xFFFFFFFF); + + // nb: see comments in clipper.pas + ulong64 a = int1Hi * int2Hi; + ulong64 b = int1Lo * int2Lo; + ulong64 c = int1Hi * int2Lo + int1Lo * int2Hi; + + Int128 tmp; + tmp.hi = long64(a + (c >> 32)); + tmp.lo = long64(c << 32); + tmp.lo += long64(b); + if (tmp.lo < b) + tmp.hi++; + if (negate) + tmp = -tmp; + return tmp; +}; +#endif + +//------------------------------------------------------------------------------ +// Miscellaneous global functions +//------------------------------------------------------------------------------ + +bool Orientation(const Path &poly) { return Area(poly) >= 0; } +//------------------------------------------------------------------------------ + +double Area(const Path &poly) { + int size = (int)poly.size(); + if (size < 3) + return 0; + + double a = 0; + for (int i = 0, j = size - 1; i < size; ++i) { + a += ((double)poly[j].X + poly[i].X) * ((double)poly[j].Y - poly[i].Y); + j = i; + } + return -a * 0.5; +} +//------------------------------------------------------------------------------ + +double Area(const OutPt *op) { + const OutPt *startOp = op; + if (!op) + return 0; + double a = 0; + do { + a += (double)(op->Prev->Pt.X + op->Pt.X) * + (double)(op->Prev->Pt.Y - op->Pt.Y); + op = op->Next; + } while (op != startOp); + return a * 0.5; +} +//------------------------------------------------------------------------------ + +double Area(const OutRec &outRec) { return Area(outRec.Pts); } +//------------------------------------------------------------------------------ + +bool PointIsVertex(const IntPoint &Pt, OutPt *pp) { + OutPt *pp2 = pp; + do { + if (pp2->Pt == Pt) + return true; + pp2 = pp2->Next; + } while (pp2 != pp); + return false; +} +//------------------------------------------------------------------------------ + +// See "The Point in Polygon Problem for Arbitrary Polygons" by Hormann & +// Agathos +// http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.88.5498&rep=rep1&type=pdf +int PointInPolygon(const IntPoint &pt, const Path &path) { + // returns 0 if false, +1 if true, -1 if pt ON polygon boundary + int result = 0; + size_t cnt = path.size(); + if (cnt < 3) + return 0; + IntPoint ip = path[0]; + for (size_t i = 1; i <= cnt; ++i) { + IntPoint ipNext = (i == cnt ? path[0] : path[i]); + if (ipNext.Y == pt.Y) { + if ((ipNext.X == pt.X) || + (ip.Y == pt.Y && ((ipNext.X > pt.X) == (ip.X < pt.X)))) + return -1; + } + if ((ip.Y < pt.Y) != (ipNext.Y < pt.Y)) { + if (ip.X >= pt.X) { + if (ipNext.X > pt.X) + result = 1 - result; + else { + double d = (double)(ip.X - pt.X) * (ipNext.Y - pt.Y) - + (double)(ipNext.X - pt.X) * (ip.Y - pt.Y); + if (!d) + return -1; + if ((d > 0) == (ipNext.Y > ip.Y)) + result = 1 - result; + } + } else { + if (ipNext.X > pt.X) { + double d = (double)(ip.X - pt.X) * (ipNext.Y - pt.Y) - + (double)(ipNext.X - pt.X) * (ip.Y - pt.Y); + if (!d) + return -1; + if ((d > 0) == (ipNext.Y > ip.Y)) + result = 1 - result; + } + } + } + ip = ipNext; + } + return result; +} +//------------------------------------------------------------------------------ + +int PointInPolygon(const IntPoint &pt, OutPt *op) { + // returns 0 if false, +1 if true, -1 if pt ON polygon boundary + int result = 0; + OutPt *startOp = op; + for (;;) { + if (op->Next->Pt.Y == pt.Y) { + if ((op->Next->Pt.X == pt.X) || + (op->Pt.Y == pt.Y && ((op->Next->Pt.X > pt.X) == (op->Pt.X < pt.X)))) + return -1; + } + if ((op->Pt.Y < pt.Y) != (op->Next->Pt.Y < pt.Y)) { + if (op->Pt.X >= pt.X) { + if (op->Next->Pt.X > pt.X) + result = 1 - result; + else { + double d = (double)(op->Pt.X - pt.X) * (op->Next->Pt.Y - pt.Y) - + (double)(op->Next->Pt.X - pt.X) * (op->Pt.Y - pt.Y); + if (!d) + return -1; + if ((d > 0) == (op->Next->Pt.Y > op->Pt.Y)) + result = 1 - result; + } + } else { + if (op->Next->Pt.X > pt.X) { + double d = (double)(op->Pt.X - pt.X) * (op->Next->Pt.Y - pt.Y) - + (double)(op->Next->Pt.X - pt.X) * (op->Pt.Y - pt.Y); + if (!d) + return -1; + if ((d > 0) == (op->Next->Pt.Y > op->Pt.Y)) + result = 1 - result; + } + } + } + op = op->Next; + if (startOp == op) + break; + } + return result; +} +//------------------------------------------------------------------------------ + +bool Poly2ContainsPoly1(OutPt *OutPt1, OutPt *OutPt2) { + OutPt *op = OutPt1; + do { + // nb: PointInPolygon returns 0 if false, +1 if true, -1 if pt on polygon + int res = PointInPolygon(op->Pt, OutPt2); + if (res >= 0) + return res > 0; + op = op->Next; + } while (op != OutPt1); + return true; +} +//---------------------------------------------------------------------- + +bool SlopesEqual(const TEdge &e1, const TEdge &e2, bool UseFullInt64Range) { +#ifndef use_int32 + if (UseFullInt64Range) + return Int128Mul(e1.Top.Y - e1.Bot.Y, e2.Top.X - e2.Bot.X) == + Int128Mul(e1.Top.X - e1.Bot.X, e2.Top.Y - e2.Bot.Y); + else +#endif + return (e1.Top.Y - e1.Bot.Y) * (e2.Top.X - e2.Bot.X) == + (e1.Top.X - e1.Bot.X) * (e2.Top.Y - e2.Bot.Y); +} +//------------------------------------------------------------------------------ + +bool SlopesEqual(const IntPoint pt1, const IntPoint pt2, const IntPoint pt3, + bool UseFullInt64Range) { +#ifndef use_int32 + if (UseFullInt64Range) + return Int128Mul(pt1.Y - pt2.Y, pt2.X - pt3.X) == + Int128Mul(pt1.X - pt2.X, pt2.Y - pt3.Y); + else +#endif + return (pt1.Y - pt2.Y) * (pt2.X - pt3.X) == + (pt1.X - pt2.X) * (pt2.Y - pt3.Y); +} +//------------------------------------------------------------------------------ + +bool SlopesEqual(const IntPoint pt1, const IntPoint pt2, const IntPoint pt3, + const IntPoint pt4, bool UseFullInt64Range) { +#ifndef use_int32 + if (UseFullInt64Range) + return Int128Mul(pt1.Y - pt2.Y, pt3.X - pt4.X) == + Int128Mul(pt1.X - pt2.X, pt3.Y - pt4.Y); + else +#endif + return (pt1.Y - pt2.Y) * (pt3.X - pt4.X) == + (pt1.X - pt2.X) * (pt3.Y - pt4.Y); +} +//------------------------------------------------------------------------------ + +inline bool IsHorizontal(TEdge &e) { return e.Dx == HORIZONTAL; } +//------------------------------------------------------------------------------ + +inline double GetDx(const IntPoint pt1, const IntPoint pt2) { + return (pt1.Y == pt2.Y) ? HORIZONTAL + : (double)(pt2.X - pt1.X) / (pt2.Y - pt1.Y); +} +//--------------------------------------------------------------------------- + +inline void SetDx(TEdge &e) { + cInt dy = (e.Top.Y - e.Bot.Y); + if (dy == 0) + e.Dx = HORIZONTAL; + else + e.Dx = (double)(e.Top.X - e.Bot.X) / dy; +} +//--------------------------------------------------------------------------- + +inline void SwapSides(TEdge &Edge1, TEdge &Edge2) { + EdgeSide Side = Edge1.Side; + Edge1.Side = Edge2.Side; + Edge2.Side = Side; +} +//------------------------------------------------------------------------------ + +inline void SwapPolyIndexes(TEdge &Edge1, TEdge &Edge2) { + int OutIdx = Edge1.OutIdx; + Edge1.OutIdx = Edge2.OutIdx; + Edge2.OutIdx = OutIdx; +} +//------------------------------------------------------------------------------ + +inline cInt TopX(TEdge &edge, const cInt currentY) { + return (currentY == edge.Top.Y) + ? edge.Top.X + : edge.Bot.X + Round(edge.Dx * (currentY - edge.Bot.Y)); +} +//------------------------------------------------------------------------------ + +void IntersectPoint(TEdge &Edge1, TEdge &Edge2, IntPoint &ip) { +#ifdef use_xyz + ip.Z = 0; +#endif + + double b1, b2; + if (Edge1.Dx == Edge2.Dx) { + ip.Y = Edge1.Curr.Y; + ip.X = TopX(Edge1, ip.Y); + return; + } else if (Edge1.Dx == 0) { + ip.X = Edge1.Bot.X; + if (IsHorizontal(Edge2)) + ip.Y = Edge2.Bot.Y; + else { + b2 = Edge2.Bot.Y - (Edge2.Bot.X / Edge2.Dx); + ip.Y = Round(ip.X / Edge2.Dx + b2); + } + } else if (Edge2.Dx == 0) { + ip.X = Edge2.Bot.X; + if (IsHorizontal(Edge1)) + ip.Y = Edge1.Bot.Y; + else { + b1 = Edge1.Bot.Y - (Edge1.Bot.X / Edge1.Dx); + ip.Y = Round(ip.X / Edge1.Dx + b1); + } + } else { + b1 = Edge1.Bot.X - Edge1.Bot.Y * Edge1.Dx; + b2 = Edge2.Bot.X - Edge2.Bot.Y * Edge2.Dx; + double q = (b2 - b1) / (Edge1.Dx - Edge2.Dx); + ip.Y = Round(q); + if (std::fabs(Edge1.Dx) < std::fabs(Edge2.Dx)) + ip.X = Round(Edge1.Dx * q + b1); + else + ip.X = Round(Edge2.Dx * q + b2); + } + + if (ip.Y < Edge1.Top.Y || ip.Y < Edge2.Top.Y) { + if (Edge1.Top.Y > Edge2.Top.Y) + ip.Y = Edge1.Top.Y; + else + ip.Y = Edge2.Top.Y; + if (std::fabs(Edge1.Dx) < std::fabs(Edge2.Dx)) + ip.X = TopX(Edge1, ip.Y); + else + ip.X = TopX(Edge2, ip.Y); + } + // finally, don't allow 'ip' to be BELOW curr.Y (ie bottom of scanbeam) ... + if (ip.Y > Edge1.Curr.Y) { + ip.Y = Edge1.Curr.Y; + // use the more vertical edge to derive X ... + if (std::fabs(Edge1.Dx) > std::fabs(Edge2.Dx)) + ip.X = TopX(Edge2, ip.Y); + else + ip.X = TopX(Edge1, ip.Y); + } +} +//------------------------------------------------------------------------------ + +void ReversePolyPtLinks(OutPt *pp) { + if (!pp) + return; + OutPt *pp1, *pp2; + pp1 = pp; + do { + pp2 = pp1->Next; + pp1->Next = pp1->Prev; + pp1->Prev = pp2; + pp1 = pp2; + } while (pp1 != pp); +} +//------------------------------------------------------------------------------ + +void DisposeOutPts(OutPt *&pp) { + if (pp == 0) + return; + pp->Prev->Next = 0; + while (pp) { + OutPt *tmpPp = pp; + pp = pp->Next; + delete tmpPp; + } +} +//------------------------------------------------------------------------------ + +inline void InitEdge(TEdge *e, TEdge *eNext, TEdge *ePrev, const IntPoint &Pt) { + std::memset(e, 0, sizeof(TEdge)); + e->Next = eNext; + e->Prev = ePrev; + e->Curr = Pt; + e->OutIdx = Unassigned; +} +//------------------------------------------------------------------------------ + +void InitEdge2(TEdge &e, PolyType Pt) { + if (e.Curr.Y >= e.Next->Curr.Y) { + e.Bot = e.Curr; + e.Top = e.Next->Curr; + } else { + e.Top = e.Curr; + e.Bot = e.Next->Curr; + } + SetDx(e); + e.PolyTyp = Pt; +} +//------------------------------------------------------------------------------ + +TEdge *RemoveEdge(TEdge *e) { + // removes e from double_linked_list (but without removing from memory) + e->Prev->Next = e->Next; + e->Next->Prev = e->Prev; + TEdge *result = e->Next; + e->Prev = 0; // flag as removed (see ClipperBase.Clear) + return result; +} +//------------------------------------------------------------------------------ + +inline void ReverseHorizontal(TEdge &e) { + // swap horizontal edges' Top and Bottom x's so they follow the natural + // progression of the bounds - ie so their xbots will align with the + // adjoining lower edge. [Helpful in the ProcessHorizontal() method.] + std::swap(e.Top.X, e.Bot.X); +#ifdef use_xyz + std::swap(e.Top.Z, e.Bot.Z); +#endif +} +//------------------------------------------------------------------------------ + +void SwapPoints(IntPoint &pt1, IntPoint &pt2) { + IntPoint tmp = pt1; + pt1 = pt2; + pt2 = tmp; +} +//------------------------------------------------------------------------------ + +bool GetOverlapSegment(IntPoint pt1a, IntPoint pt1b, IntPoint pt2a, + IntPoint pt2b, IntPoint &pt1, IntPoint &pt2) { + // precondition: segments are Collinear. + if (Abs(pt1a.X - pt1b.X) > Abs(pt1a.Y - pt1b.Y)) { + if (pt1a.X > pt1b.X) + SwapPoints(pt1a, pt1b); + if (pt2a.X > pt2b.X) + SwapPoints(pt2a, pt2b); + if (pt1a.X > pt2a.X) + pt1 = pt1a; + else + pt1 = pt2a; + if (pt1b.X < pt2b.X) + pt2 = pt1b; + else + pt2 = pt2b; + return pt1.X < pt2.X; + } else { + if (pt1a.Y < pt1b.Y) + SwapPoints(pt1a, pt1b); + if (pt2a.Y < pt2b.Y) + SwapPoints(pt2a, pt2b); + if (pt1a.Y < pt2a.Y) + pt1 = pt1a; + else + pt1 = pt2a; + if (pt1b.Y > pt2b.Y) + pt2 = pt1b; + else + pt2 = pt2b; + return pt1.Y > pt2.Y; + } +} +//------------------------------------------------------------------------------ + +bool FirstIsBottomPt(const OutPt *btmPt1, const OutPt *btmPt2) { + OutPt *p = btmPt1->Prev; + while ((p->Pt == btmPt1->Pt) && (p != btmPt1)) + p = p->Prev; + double dx1p = std::fabs(GetDx(btmPt1->Pt, p->Pt)); + p = btmPt1->Next; + while ((p->Pt == btmPt1->Pt) && (p != btmPt1)) + p = p->Next; + double dx1n = std::fabs(GetDx(btmPt1->Pt, p->Pt)); + + p = btmPt2->Prev; + while ((p->Pt == btmPt2->Pt) && (p != btmPt2)) + p = p->Prev; + double dx2p = std::fabs(GetDx(btmPt2->Pt, p->Pt)); + p = btmPt2->Next; + while ((p->Pt == btmPt2->Pt) && (p != btmPt2)) + p = p->Next; + double dx2n = std::fabs(GetDx(btmPt2->Pt, p->Pt)); + + if (std::max(dx1p, dx1n) == std::max(dx2p, dx2n) && + std::min(dx1p, dx1n) == std::min(dx2p, dx2n)) + return Area(btmPt1) > 0; // if otherwise identical use orientation + else + return (dx1p >= dx2p && dx1p >= dx2n) || (dx1n >= dx2p && dx1n >= dx2n); +} +//------------------------------------------------------------------------------ + +OutPt *GetBottomPt(OutPt *pp) { + OutPt *dups = 0; + OutPt *p = pp->Next; + while (p != pp) { + if (p->Pt.Y > pp->Pt.Y) { + pp = p; + dups = 0; + } else if (p->Pt.Y == pp->Pt.Y && p->Pt.X <= pp->Pt.X) { + if (p->Pt.X < pp->Pt.X) { + dups = 0; + pp = p; + } else { + if (p->Next != pp && p->Prev != pp) + dups = p; + } + } + p = p->Next; + } + if (dups) { + // there appears to be at least 2 vertices at BottomPt so ... + while (dups != p) { + if (!FirstIsBottomPt(p, dups)) + pp = dups; + dups = dups->Next; + while (dups->Pt != pp->Pt) + dups = dups->Next; + } + } + return pp; +} +//------------------------------------------------------------------------------ + +bool Pt2IsBetweenPt1AndPt3(const IntPoint pt1, const IntPoint pt2, + const IntPoint pt3) { + if ((pt1 == pt3) || (pt1 == pt2) || (pt3 == pt2)) + return false; + else if (pt1.X != pt3.X) + return (pt2.X > pt1.X) == (pt2.X < pt3.X); + else + return (pt2.Y > pt1.Y) == (pt2.Y < pt3.Y); +} +//------------------------------------------------------------------------------ + +bool HorzSegmentsOverlap(cInt seg1a, cInt seg1b, cInt seg2a, cInt seg2b) { + if (seg1a > seg1b) + std::swap(seg1a, seg1b); + if (seg2a > seg2b) + std::swap(seg2a, seg2b); + return (seg1a < seg2b) && (seg2a < seg1b); +} + +//------------------------------------------------------------------------------ +// ClipperBase class methods ... +//------------------------------------------------------------------------------ + +ClipperBase::ClipperBase() // constructor +{ + m_CurrentLM = m_MinimaList.begin(); // begin() == end() here + m_UseFullRange = false; +} +//------------------------------------------------------------------------------ + +ClipperBase::~ClipperBase() // destructor +{ + Clear(); +} +//------------------------------------------------------------------------------ + +void RangeTest(const IntPoint &Pt, bool &useFullRange) { + if (useFullRange) { + if (Pt.X > hiRange || Pt.Y > hiRange || -Pt.X > hiRange || -Pt.Y > hiRange) + throw clipperException("Coordinate outside allowed range"); + } else if (Pt.X > loRange || Pt.Y > loRange || -Pt.X > loRange || + -Pt.Y > loRange) { + useFullRange = true; + RangeTest(Pt, useFullRange); + } +} +//------------------------------------------------------------------------------ + +TEdge *FindNextLocMin(TEdge *E) { + for (;;) { + while (E->Bot != E->Prev->Bot || E->Curr == E->Top) + E = E->Next; + if (!IsHorizontal(*E) && !IsHorizontal(*E->Prev)) + break; + while (IsHorizontal(*E->Prev)) + E = E->Prev; + TEdge *E2 = E; + while (IsHorizontal(*E)) + E = E->Next; + if (E->Top.Y == E->Prev->Bot.Y) + continue; // ie just an intermediate horz. + if (E2->Prev->Bot.X < E->Bot.X) + E = E2; + break; + } + return E; +} +//------------------------------------------------------------------------------ + +TEdge *ClipperBase::ProcessBound(TEdge *E, bool NextIsForward) { + TEdge *Result = E; + TEdge *Horz = 0; + + if (E->OutIdx == Skip) { + // if edges still remain in the current bound beyond the skip edge then + // create another LocMin and call ProcessBound once more + if (NextIsForward) { + while (E->Top.Y == E->Next->Bot.Y) + E = E->Next; + // don't include top horizontals when parsing a bound a second time, + // they will be contained in the opposite bound ... + while (E != Result && IsHorizontal(*E)) + E = E->Prev; + } else { + while (E->Top.Y == E->Prev->Bot.Y) + E = E->Prev; + while (E != Result && IsHorizontal(*E)) + E = E->Next; + } + + if (E == Result) { + if (NextIsForward) + Result = E->Next; + else + Result = E->Prev; + } else { + // there are more edges in the bound beyond result starting with E + if (NextIsForward) + E = Result->Next; + else + E = Result->Prev; + MinimaList::value_type locMin; + locMin.Y = E->Bot.Y; + locMin.LeftBound = 0; + locMin.RightBound = E; + E->WindDelta = 0; + Result = ProcessBound(E, NextIsForward); + m_MinimaList.push_back(locMin); + } + return Result; + } + + TEdge *EStart; + + if (IsHorizontal(*E)) { + // We need to be careful with open paths because this may not be a + // true local minima (ie E may be following a skip edge). + // Also, consecutive horz. edges may start heading left before going right. + if (NextIsForward) + EStart = E->Prev; + else + EStart = E->Next; + if (IsHorizontal(*EStart)) // ie an adjoining horizontal skip edge + { + if (EStart->Bot.X != E->Bot.X && EStart->Top.X != E->Bot.X) + ReverseHorizontal(*E); + } else if (EStart->Bot.X != E->Bot.X) + ReverseHorizontal(*E); + } + + EStart = E; + if (NextIsForward) { + while (Result->Top.Y == Result->Next->Bot.Y && Result->Next->OutIdx != Skip) + Result = Result->Next; + if (IsHorizontal(*Result) && Result->Next->OutIdx != Skip) { + // nb: at the top of a bound, horizontals are added to the bound + // only when the preceding edge attaches to the horizontal's left vertex + // unless a Skip edge is encountered when that becomes the top divide + Horz = Result; + while (IsHorizontal(*Horz->Prev)) + Horz = Horz->Prev; + if (Horz->Prev->Top.X > Result->Next->Top.X) + Result = Horz->Prev; + } + while (E != Result) { + E->NextInLML = E->Next; + if (IsHorizontal(*E) && E != EStart && E->Bot.X != E->Prev->Top.X) + ReverseHorizontal(*E); + E = E->Next; + } + if (IsHorizontal(*E) && E != EStart && E->Bot.X != E->Prev->Top.X) + ReverseHorizontal(*E); + Result = Result->Next; // move to the edge just beyond current bound + } else { + while (Result->Top.Y == Result->Prev->Bot.Y && Result->Prev->OutIdx != Skip) + Result = Result->Prev; + if (IsHorizontal(*Result) && Result->Prev->OutIdx != Skip) { + Horz = Result; + while (IsHorizontal(*Horz->Next)) + Horz = Horz->Next; + if (Horz->Next->Top.X == Result->Prev->Top.X || + Horz->Next->Top.X > Result->Prev->Top.X) + Result = Horz->Next; + } + + while (E != Result) { + E->NextInLML = E->Prev; + if (IsHorizontal(*E) && E != EStart && E->Bot.X != E->Next->Top.X) + ReverseHorizontal(*E); + E = E->Prev; + } + if (IsHorizontal(*E) && E != EStart && E->Bot.X != E->Next->Top.X) + ReverseHorizontal(*E); + Result = Result->Prev; // move to the edge just beyond current bound + } + + return Result; +} +//------------------------------------------------------------------------------ + +bool ClipperBase::AddPath(const Path &pg, PolyType PolyTyp, bool Closed) { +#ifdef use_lines + if (!Closed && PolyTyp == ptClip) + throw clipperException("AddPath: Open paths must be subject."); +#else + if (!Closed) + throw clipperException("AddPath: Open paths have been disabled."); +#endif + + int highI = (int)pg.size() - 1; + if (Closed) + while (highI > 0 && (pg[highI] == pg[0])) + --highI; + while (highI > 0 && (pg[highI] == pg[highI - 1])) + --highI; + if ((Closed && highI < 2) || (!Closed && highI < 1)) + return false; + + // create a new edge array ... + TEdge *edges = new TEdge[highI + 1]; + + bool IsFlat = true; + // 1. Basic (first) edge initialization ... + try { + edges[1].Curr = pg[1]; + RangeTest(pg[0], m_UseFullRange); + RangeTest(pg[highI], m_UseFullRange); + InitEdge(&edges[0], &edges[1], &edges[highI], pg[0]); + InitEdge(&edges[highI], &edges[0], &edges[highI - 1], pg[highI]); + for (int i = highI - 1; i >= 1; --i) { + RangeTest(pg[i], m_UseFullRange); + InitEdge(&edges[i], &edges[i + 1], &edges[i - 1], pg[i]); + } + } catch (...) { + delete[] edges; + throw; // range test fails + } + TEdge *eStart = &edges[0]; + + // 2. Remove duplicate vertices, and (when closed) collinear edges ... + TEdge *E = eStart, *eLoopStop = eStart; + for (;;) { + // nb: allows matching start and end points when not Closed ... + if (E->Curr == E->Next->Curr && (Closed || E->Next != eStart)) { + if (E == E->Next) + break; + if (E == eStart) + eStart = E->Next; + E = RemoveEdge(E); + eLoopStop = E; + continue; + } + if (E->Prev == E->Next) + break; // only two vertices + else if (Closed && SlopesEqual(E->Prev->Curr, E->Curr, E->Next->Curr, + m_UseFullRange) && + (!m_PreserveCollinear || + !Pt2IsBetweenPt1AndPt3(E->Prev->Curr, E->Curr, E->Next->Curr))) { + // Collinear edges are allowed for open paths but in closed paths + // the default is to merge adjacent collinear edges into a single edge. + // However, if the PreserveCollinear property is enabled, only overlapping + // collinear edges (ie spikes) will be removed from closed paths. + if (E == eStart) + eStart = E->Next; + E = RemoveEdge(E); + E = E->Prev; + eLoopStop = E; + continue; + } + E = E->Next; + if ((E == eLoopStop) || (!Closed && E->Next == eStart)) + break; + } + + if ((!Closed && (E == E->Next)) || (Closed && (E->Prev == E->Next))) { + delete[] edges; + return false; + } + + if (!Closed) { + m_HasOpenPaths = true; + eStart->Prev->OutIdx = Skip; + } + + // 3. Do second stage of edge initialization ... + E = eStart; + do { + InitEdge2(*E, PolyTyp); + E = E->Next; + if (IsFlat && E->Curr.Y != eStart->Curr.Y) + IsFlat = false; + } while (E != eStart); + + // 4. Finally, add edge bounds to LocalMinima list ... + + // Totally flat paths must be handled differently when adding them + // to LocalMinima list to avoid endless loops etc ... + if (IsFlat) { + if (Closed) { + delete[] edges; + return false; + } + E->Prev->OutIdx = Skip; + MinimaList::value_type locMin; + locMin.Y = E->Bot.Y; + locMin.LeftBound = 0; + locMin.RightBound = E; + locMin.RightBound->Side = esRight; + locMin.RightBound->WindDelta = 0; + for (;;) { + if (E->Bot.X != E->Prev->Top.X) + ReverseHorizontal(*E); + if (E->Next->OutIdx == Skip) + break; + E->NextInLML = E->Next; + E = E->Next; + } + m_MinimaList.push_back(locMin); + m_edges.push_back(edges); + return true; + } + + m_edges.push_back(edges); + bool leftBoundIsForward; + TEdge *EMin = 0; + + // workaround to avoid an endless loop in the while loop below when + // open paths have matching start and end points ... + if (E->Prev->Bot == E->Prev->Top) + E = E->Next; + + for (;;) { + E = FindNextLocMin(E); + if (E == EMin) + break; + else if (!EMin) + EMin = E; + + // E and E.Prev now share a local minima (left aligned if horizontal). + // Compare their slopes to find which starts which bound ... + MinimaList::value_type locMin; + locMin.Y = E->Bot.Y; + if (E->Dx < E->Prev->Dx) { + locMin.LeftBound = E->Prev; + locMin.RightBound = E; + leftBoundIsForward = false; // Q.nextInLML = Q.prev + } else { + locMin.LeftBound = E; + locMin.RightBound = E->Prev; + leftBoundIsForward = true; // Q.nextInLML = Q.next + } + + if (!Closed) + locMin.LeftBound->WindDelta = 0; + else if (locMin.LeftBound->Next == locMin.RightBound) + locMin.LeftBound->WindDelta = -1; + else + locMin.LeftBound->WindDelta = 1; + locMin.RightBound->WindDelta = -locMin.LeftBound->WindDelta; + + E = ProcessBound(locMin.LeftBound, leftBoundIsForward); + if (E->OutIdx == Skip) + E = ProcessBound(E, leftBoundIsForward); + + TEdge *E2 = ProcessBound(locMin.RightBound, !leftBoundIsForward); + if (E2->OutIdx == Skip) + E2 = ProcessBound(E2, !leftBoundIsForward); + + if (locMin.LeftBound->OutIdx == Skip) + locMin.LeftBound = 0; + else if (locMin.RightBound->OutIdx == Skip) + locMin.RightBound = 0; + m_MinimaList.push_back(locMin); + if (!leftBoundIsForward) + E = E2; + } + return true; +} +//------------------------------------------------------------------------------ + +bool ClipperBase::AddPaths(const Paths &ppg, PolyType PolyTyp, bool Closed) { + bool result = false; + for (Paths::size_type i = 0; i < ppg.size(); ++i) + if (AddPath(ppg[i], PolyTyp, Closed)) + result = true; + return result; +} +//------------------------------------------------------------------------------ + +void ClipperBase::Clear() { + DisposeLocalMinimaList(); + for (EdgeList::size_type i = 0; i < m_edges.size(); ++i) { + TEdge *edges = m_edges[i]; + delete[] edges; + } + m_edges.clear(); + m_UseFullRange = false; + m_HasOpenPaths = false; +} +//------------------------------------------------------------------------------ + +void ClipperBase::Reset() { + m_CurrentLM = m_MinimaList.begin(); + if (m_CurrentLM == m_MinimaList.end()) + return; // ie nothing to process + std::sort(m_MinimaList.begin(), m_MinimaList.end(), LocMinSorter()); + + m_Scanbeam = ScanbeamList(); // clears/resets priority_queue + // reset all edges ... + for (MinimaList::iterator lm = m_MinimaList.begin(); lm != m_MinimaList.end(); + ++lm) { + InsertScanbeam(lm->Y); + TEdge *e = lm->LeftBound; + if (e) { + e->Curr = e->Bot; + e->Side = esLeft; + e->OutIdx = Unassigned; + } + + e = lm->RightBound; + if (e) { + e->Curr = e->Bot; + e->Side = esRight; + e->OutIdx = Unassigned; + } + } + m_ActiveEdges = 0; + m_CurrentLM = m_MinimaList.begin(); +} +//------------------------------------------------------------------------------ + +void ClipperBase::DisposeLocalMinimaList() { + m_MinimaList.clear(); + m_CurrentLM = m_MinimaList.begin(); +} +//------------------------------------------------------------------------------ + +bool ClipperBase::PopLocalMinima(cInt Y, const LocalMinimum *&locMin) { + if (m_CurrentLM == m_MinimaList.end() || (*m_CurrentLM).Y != Y) + return false; + locMin = &(*m_CurrentLM); + ++m_CurrentLM; + return true; +} +//------------------------------------------------------------------------------ + +IntRect ClipperBase::GetBounds() { + IntRect result; + MinimaList::iterator lm = m_MinimaList.begin(); + if (lm == m_MinimaList.end()) { + result.left = result.top = result.right = result.bottom = 0; + return result; + } + result.left = lm->LeftBound->Bot.X; + result.top = lm->LeftBound->Bot.Y; + result.right = lm->LeftBound->Bot.X; + result.bottom = lm->LeftBound->Bot.Y; + while (lm != m_MinimaList.end()) { + // todo - needs fixing for open paths + result.bottom = std::max(result.bottom, lm->LeftBound->Bot.Y); + TEdge *e = lm->LeftBound; + for (;;) { + TEdge *bottomE = e; + while (e->NextInLML) { + if (e->Bot.X < result.left) + result.left = e->Bot.X; + if (e->Bot.X > result.right) + result.right = e->Bot.X; + e = e->NextInLML; + } + result.left = std::min(result.left, e->Bot.X); + result.right = std::max(result.right, e->Bot.X); + result.left = std::min(result.left, e->Top.X); + result.right = std::max(result.right, e->Top.X); + result.top = std::min(result.top, e->Top.Y); + if (bottomE == lm->LeftBound) + e = lm->RightBound; + else + break; + } + ++lm; + } + return result; +} +//------------------------------------------------------------------------------ + +void ClipperBase::InsertScanbeam(const cInt Y) { m_Scanbeam.push(Y); } +//------------------------------------------------------------------------------ + +bool ClipperBase::PopScanbeam(cInt &Y) { + if (m_Scanbeam.empty()) + return false; + Y = m_Scanbeam.top(); + m_Scanbeam.pop(); + while (!m_Scanbeam.empty() && Y == m_Scanbeam.top()) { + m_Scanbeam.pop(); + } // Pop duplicates. + return true; +} +//------------------------------------------------------------------------------ + +void ClipperBase::DisposeAllOutRecs() { + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) + DisposeOutRec(i); + m_PolyOuts.clear(); +} +//------------------------------------------------------------------------------ + +void ClipperBase::DisposeOutRec(PolyOutList::size_type index) { + OutRec *outRec = m_PolyOuts[index]; + if (outRec->Pts) + DisposeOutPts(outRec->Pts); + delete outRec; + m_PolyOuts[index] = 0; +} +//------------------------------------------------------------------------------ + +void ClipperBase::DeleteFromAEL(TEdge *e) { + TEdge *AelPrev = e->PrevInAEL; + TEdge *AelNext = e->NextInAEL; + if (!AelPrev && !AelNext && (e != m_ActiveEdges)) + return; // already deleted + if (AelPrev) + AelPrev->NextInAEL = AelNext; + else + m_ActiveEdges = AelNext; + if (AelNext) + AelNext->PrevInAEL = AelPrev; + e->NextInAEL = 0; + e->PrevInAEL = 0; +} +//------------------------------------------------------------------------------ + +OutRec *ClipperBase::CreateOutRec() { + OutRec *result = new OutRec; + result->IsHole = false; + result->IsOpen = false; + result->FirstLeft = 0; + result->Pts = 0; + result->BottomPt = 0; + result->PolyNd = 0; + m_PolyOuts.push_back(result); + result->Idx = (int)m_PolyOuts.size() - 1; + return result; +} +//------------------------------------------------------------------------------ + +void ClipperBase::SwapPositionsInAEL(TEdge *Edge1, TEdge *Edge2) { + // check that one or other edge hasn't already been removed from AEL ... + if (Edge1->NextInAEL == Edge1->PrevInAEL || + Edge2->NextInAEL == Edge2->PrevInAEL) + return; + + if (Edge1->NextInAEL == Edge2) { + TEdge *Next = Edge2->NextInAEL; + if (Next) + Next->PrevInAEL = Edge1; + TEdge *Prev = Edge1->PrevInAEL; + if (Prev) + Prev->NextInAEL = Edge2; + Edge2->PrevInAEL = Prev; + Edge2->NextInAEL = Edge1; + Edge1->PrevInAEL = Edge2; + Edge1->NextInAEL = Next; + } else if (Edge2->NextInAEL == Edge1) { + TEdge *Next = Edge1->NextInAEL; + if (Next) + Next->PrevInAEL = Edge2; + TEdge *Prev = Edge2->PrevInAEL; + if (Prev) + Prev->NextInAEL = Edge1; + Edge1->PrevInAEL = Prev; + Edge1->NextInAEL = Edge2; + Edge2->PrevInAEL = Edge1; + Edge2->NextInAEL = Next; + } else { + TEdge *Next = Edge1->NextInAEL; + TEdge *Prev = Edge1->PrevInAEL; + Edge1->NextInAEL = Edge2->NextInAEL; + if (Edge1->NextInAEL) + Edge1->NextInAEL->PrevInAEL = Edge1; + Edge1->PrevInAEL = Edge2->PrevInAEL; + if (Edge1->PrevInAEL) + Edge1->PrevInAEL->NextInAEL = Edge1; + Edge2->NextInAEL = Next; + if (Edge2->NextInAEL) + Edge2->NextInAEL->PrevInAEL = Edge2; + Edge2->PrevInAEL = Prev; + if (Edge2->PrevInAEL) + Edge2->PrevInAEL->NextInAEL = Edge2; + } + + if (!Edge1->PrevInAEL) + m_ActiveEdges = Edge1; + else if (!Edge2->PrevInAEL) + m_ActiveEdges = Edge2; +} +//------------------------------------------------------------------------------ + +void ClipperBase::UpdateEdgeIntoAEL(TEdge *&e) { + if (!e->NextInLML) + throw clipperException("UpdateEdgeIntoAEL: invalid call"); + + e->NextInLML->OutIdx = e->OutIdx; + TEdge *AelPrev = e->PrevInAEL; + TEdge *AelNext = e->NextInAEL; + if (AelPrev) + AelPrev->NextInAEL = e->NextInLML; + else + m_ActiveEdges = e->NextInLML; + if (AelNext) + AelNext->PrevInAEL = e->NextInLML; + e->NextInLML->Side = e->Side; + e->NextInLML->WindDelta = e->WindDelta; + e->NextInLML->WindCnt = e->WindCnt; + e->NextInLML->WindCnt2 = e->WindCnt2; + e = e->NextInLML; + e->Curr = e->Bot; + e->PrevInAEL = AelPrev; + e->NextInAEL = AelNext; + if (!IsHorizontal(*e)) + InsertScanbeam(e->Top.Y); +} +//------------------------------------------------------------------------------ + +bool ClipperBase::LocalMinimaPending() { + return (m_CurrentLM != m_MinimaList.end()); +} + +//------------------------------------------------------------------------------ +// TClipper methods ... +//------------------------------------------------------------------------------ + +Clipper::Clipper(int initOptions) + : ClipperBase() // constructor +{ + m_ExecuteLocked = false; + m_UseFullRange = false; + m_ReverseOutput = ((initOptions & ioReverseSolution) != 0); + m_StrictSimple = ((initOptions & ioStrictlySimple) != 0); + m_PreserveCollinear = ((initOptions & ioPreserveCollinear) != 0); + m_HasOpenPaths = false; +#ifdef use_xyz + m_ZFill = 0; +#endif +} +//------------------------------------------------------------------------------ + +#ifdef use_xyz +void Clipper::ZFillFunction(ZFillCallback zFillFunc) { m_ZFill = zFillFunc; } +//------------------------------------------------------------------------------ +#endif + +bool Clipper::Execute(ClipType clipType, Paths &solution, + PolyFillType fillType) { + return Execute(clipType, solution, fillType, fillType); +} +//------------------------------------------------------------------------------ + +bool Clipper::Execute(ClipType clipType, PolyTree &polytree, + PolyFillType fillType) { + return Execute(clipType, polytree, fillType, fillType); +} +//------------------------------------------------------------------------------ + +bool Clipper::Execute(ClipType clipType, Paths &solution, + PolyFillType subjFillType, PolyFillType clipFillType) { + if (m_ExecuteLocked) + return false; + if (m_HasOpenPaths) + throw clipperException( + "Error: PolyTree struct is needed for open path clipping."); + m_ExecuteLocked = true; + solution.resize(0); + m_SubjFillType = subjFillType; + m_ClipFillType = clipFillType; + m_ClipType = clipType; + m_UsingPolyTree = false; + bool succeeded = ExecuteInternal(); + if (succeeded) + BuildResult(solution); + DisposeAllOutRecs(); + m_ExecuteLocked = false; + return succeeded; +} +//------------------------------------------------------------------------------ + +bool Clipper::Execute(ClipType clipType, PolyTree &polytree, + PolyFillType subjFillType, PolyFillType clipFillType) { + if (m_ExecuteLocked) + return false; + m_ExecuteLocked = true; + m_SubjFillType = subjFillType; + m_ClipFillType = clipFillType; + m_ClipType = clipType; + m_UsingPolyTree = true; + bool succeeded = ExecuteInternal(); + if (succeeded) + BuildResult2(polytree); + DisposeAllOutRecs(); + m_ExecuteLocked = false; + return succeeded; +} +//------------------------------------------------------------------------------ + +void Clipper::FixHoleLinkage(OutRec &outrec) { + // skip OutRecs that (a) contain outermost polygons or + //(b) already have the correct owner/child linkage ... + if (!outrec.FirstLeft || + (outrec.IsHole != outrec.FirstLeft->IsHole && outrec.FirstLeft->Pts)) + return; + + OutRec *orfl = outrec.FirstLeft; + while (orfl && ((orfl->IsHole == outrec.IsHole) || !orfl->Pts)) + orfl = orfl->FirstLeft; + outrec.FirstLeft = orfl; +} +//------------------------------------------------------------------------------ + +bool Clipper::ExecuteInternal() { + bool succeeded = true; + try { + Reset(); + m_Maxima = MaximaList(); + m_SortedEdges = 0; + + succeeded = true; + cInt botY, topY; + if (!PopScanbeam(botY)) + return false; + InsertLocalMinimaIntoAEL(botY); + while (PopScanbeam(topY) || LocalMinimaPending()) { + ProcessHorizontals(); + ClearGhostJoins(); + if (!ProcessIntersections(topY)) { + succeeded = false; + break; + } + ProcessEdgesAtTopOfScanbeam(topY); + botY = topY; + InsertLocalMinimaIntoAEL(botY); + } + } catch (...) { + succeeded = false; + } + + if (succeeded) { + // fix orientations ... + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) { + OutRec *outRec = m_PolyOuts[i]; + if (!outRec->Pts || outRec->IsOpen) + continue; + if ((outRec->IsHole ^ m_ReverseOutput) == (Area(*outRec) > 0)) + ReversePolyPtLinks(outRec->Pts); + } + + if (!m_Joins.empty()) + JoinCommonEdges(); + + // unfortunately FixupOutPolygon() must be done after JoinCommonEdges() + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) { + OutRec *outRec = m_PolyOuts[i]; + if (!outRec->Pts) + continue; + if (outRec->IsOpen) + FixupOutPolyline(*outRec); + else + FixupOutPolygon(*outRec); + } + + if (m_StrictSimple) + DoSimplePolygons(); + } + + ClearJoins(); + ClearGhostJoins(); + return succeeded; +} +//------------------------------------------------------------------------------ + +void Clipper::SetWindingCount(TEdge &edge) { + TEdge *e = edge.PrevInAEL; + // find the edge of the same polytype that immediately preceeds 'edge' in AEL + while (e && ((e->PolyTyp != edge.PolyTyp) || (e->WindDelta == 0))) + e = e->PrevInAEL; + if (!e) { + if (edge.WindDelta == 0) { + PolyFillType pft = + (edge.PolyTyp == ptSubject ? m_SubjFillType : m_ClipFillType); + edge.WindCnt = (pft == pftNegative ? -1 : 1); + } else + edge.WindCnt = edge.WindDelta; + edge.WindCnt2 = 0; + e = m_ActiveEdges; // ie get ready to calc WindCnt2 + } else if (edge.WindDelta == 0 && m_ClipType != ctUnion) { + edge.WindCnt = 1; + edge.WindCnt2 = e->WindCnt2; + e = e->NextInAEL; // ie get ready to calc WindCnt2 + } else if (IsEvenOddFillType(edge)) { + // EvenOdd filling ... + if (edge.WindDelta == 0) { + // are we inside a subj polygon ... + bool Inside = true; + TEdge *e2 = e->PrevInAEL; + while (e2) { + if (e2->PolyTyp == e->PolyTyp && e2->WindDelta != 0) + Inside = !Inside; + e2 = e2->PrevInAEL; + } + edge.WindCnt = (Inside ? 0 : 1); + } else { + edge.WindCnt = edge.WindDelta; + } + edge.WindCnt2 = e->WindCnt2; + e = e->NextInAEL; // ie get ready to calc WindCnt2 + } else { + // nonZero, Positive or Negative filling ... + if (e->WindCnt * e->WindDelta < 0) { + // prev edge is 'decreasing' WindCount (WC) toward zero + // so we're outside the previous polygon ... + if (Abs(e->WindCnt) > 1) { + // outside prev poly but still inside another. + // when reversing direction of prev poly use the same WC + if (e->WindDelta * edge.WindDelta < 0) + edge.WindCnt = e->WindCnt; + // otherwise continue to 'decrease' WC ... + else + edge.WindCnt = e->WindCnt + edge.WindDelta; + } else + // now outside all polys of same polytype so set own WC ... + edge.WindCnt = (edge.WindDelta == 0 ? 1 : edge.WindDelta); + } else { + // prev edge is 'increasing' WindCount (WC) away from zero + // so we're inside the previous polygon ... + if (edge.WindDelta == 0) + edge.WindCnt = (e->WindCnt < 0 ? e->WindCnt - 1 : e->WindCnt + 1); + // if wind direction is reversing prev then use same WC + else if (e->WindDelta * edge.WindDelta < 0) + edge.WindCnt = e->WindCnt; + // otherwise add to WC ... + else + edge.WindCnt = e->WindCnt + edge.WindDelta; + } + edge.WindCnt2 = e->WindCnt2; + e = e->NextInAEL; // ie get ready to calc WindCnt2 + } + + // update WindCnt2 ... + if (IsEvenOddAltFillType(edge)) { + // EvenOdd filling ... + while (e != &edge) { + if (e->WindDelta != 0) + edge.WindCnt2 = (edge.WindCnt2 == 0 ? 1 : 0); + e = e->NextInAEL; + } + } else { + // nonZero, Positive or Negative filling ... + while (e != &edge) { + edge.WindCnt2 += e->WindDelta; + e = e->NextInAEL; + } + } +} +//------------------------------------------------------------------------------ + +bool Clipper::IsEvenOddFillType(const TEdge &edge) const { + if (edge.PolyTyp == ptSubject) + return m_SubjFillType == pftEvenOdd; + else + return m_ClipFillType == pftEvenOdd; +} +//------------------------------------------------------------------------------ + +bool Clipper::IsEvenOddAltFillType(const TEdge &edge) const { + if (edge.PolyTyp == ptSubject) + return m_ClipFillType == pftEvenOdd; + else + return m_SubjFillType == pftEvenOdd; +} +//------------------------------------------------------------------------------ + +bool Clipper::IsContributing(const TEdge &edge) const { + PolyFillType pft, pft2; + if (edge.PolyTyp == ptSubject) { + pft = m_SubjFillType; + pft2 = m_ClipFillType; + } else { + pft = m_ClipFillType; + pft2 = m_SubjFillType; + } + + switch (pft) { + case pftEvenOdd: + // return false if a subj line has been flagged as inside a subj polygon + if (edge.WindDelta == 0 && edge.WindCnt != 1) + return false; + break; + case pftNonZero: + if (Abs(edge.WindCnt) != 1) + return false; + break; + case pftPositive: + if (edge.WindCnt != 1) + return false; + break; + default: // pftNegative + if (edge.WindCnt != -1) + return false; + } + + switch (m_ClipType) { + case ctIntersection: + switch (pft2) { + case pftEvenOdd: + case pftNonZero: + return (edge.WindCnt2 != 0); + case pftPositive: + return (edge.WindCnt2 > 0); + default: + return (edge.WindCnt2 < 0); + } + break; + case ctUnion: + switch (pft2) { + case pftEvenOdd: + case pftNonZero: + return (edge.WindCnt2 == 0); + case pftPositive: + return (edge.WindCnt2 <= 0); + default: + return (edge.WindCnt2 >= 0); + } + break; + case ctDifference: + if (edge.PolyTyp == ptSubject) + switch (pft2) { + case pftEvenOdd: + case pftNonZero: + return (edge.WindCnt2 == 0); + case pftPositive: + return (edge.WindCnt2 <= 0); + default: + return (edge.WindCnt2 >= 0); + } + else + switch (pft2) { + case pftEvenOdd: + case pftNonZero: + return (edge.WindCnt2 != 0); + case pftPositive: + return (edge.WindCnt2 > 0); + default: + return (edge.WindCnt2 < 0); + } + break; + case ctXor: + if (edge.WindDelta == 0) // XOr always contributing unless open + switch (pft2) { + case pftEvenOdd: + case pftNonZero: + return (edge.WindCnt2 == 0); + case pftPositive: + return (edge.WindCnt2 <= 0); + default: + return (edge.WindCnt2 >= 0); + } + else + return true; + break; + default: + return true; + } +} +//------------------------------------------------------------------------------ + +OutPt *Clipper::AddLocalMinPoly(TEdge *e1, TEdge *e2, const IntPoint &Pt) { + OutPt *result; + TEdge *e, *prevE; + if (IsHorizontal(*e2) || (e1->Dx > e2->Dx)) { + result = AddOutPt(e1, Pt); + e2->OutIdx = e1->OutIdx; + e1->Side = esLeft; + e2->Side = esRight; + e = e1; + if (e->PrevInAEL == e2) + prevE = e2->PrevInAEL; + else + prevE = e->PrevInAEL; + } else { + result = AddOutPt(e2, Pt); + e1->OutIdx = e2->OutIdx; + e1->Side = esRight; + e2->Side = esLeft; + e = e2; + if (e->PrevInAEL == e1) + prevE = e1->PrevInAEL; + else + prevE = e->PrevInAEL; + } + + if (prevE && prevE->OutIdx >= 0 && prevE->Top.Y < Pt.Y && e->Top.Y < Pt.Y) { + cInt xPrev = TopX(*prevE, Pt.Y); + cInt xE = TopX(*e, Pt.Y); + if (xPrev == xE && (e->WindDelta != 0) && (prevE->WindDelta != 0) && + SlopesEqual(IntPoint(xPrev, Pt.Y), prevE->Top, IntPoint(xE, Pt.Y), + e->Top, m_UseFullRange)) { + OutPt *outPt = AddOutPt(prevE, Pt); + AddJoin(result, outPt, e->Top); + } + } + return result; +} +//------------------------------------------------------------------------------ + +void Clipper::AddLocalMaxPoly(TEdge *e1, TEdge *e2, const IntPoint &Pt) { + AddOutPt(e1, Pt); + if (e2->WindDelta == 0) + AddOutPt(e2, Pt); + if (e1->OutIdx == e2->OutIdx) { + e1->OutIdx = Unassigned; + e2->OutIdx = Unassigned; + } else if (e1->OutIdx < e2->OutIdx) + AppendPolygon(e1, e2); + else + AppendPolygon(e2, e1); +} +//------------------------------------------------------------------------------ + +void Clipper::AddEdgeToSEL(TEdge *edge) { + // SEL pointers in PEdge are reused to build a list of horizontal edges. + // However, we don't need to worry about order with horizontal edge + // processing. + if (!m_SortedEdges) { + m_SortedEdges = edge; + edge->PrevInSEL = 0; + edge->NextInSEL = 0; + } else { + edge->NextInSEL = m_SortedEdges; + edge->PrevInSEL = 0; + m_SortedEdges->PrevInSEL = edge; + m_SortedEdges = edge; + } +} +//------------------------------------------------------------------------------ + +bool Clipper::PopEdgeFromSEL(TEdge *&edge) { + if (!m_SortedEdges) + return false; + edge = m_SortedEdges; + DeleteFromSEL(m_SortedEdges); + return true; +} +//------------------------------------------------------------------------------ + +void Clipper::CopyAELToSEL() { + TEdge *e = m_ActiveEdges; + m_SortedEdges = e; + while (e) { + e->PrevInSEL = e->PrevInAEL; + e->NextInSEL = e->NextInAEL; + e = e->NextInAEL; + } +} +//------------------------------------------------------------------------------ + +void Clipper::AddJoin(OutPt *op1, OutPt *op2, const IntPoint OffPt) { + Join *j = new Join; + j->OutPt1 = op1; + j->OutPt2 = op2; + j->OffPt = OffPt; + m_Joins.push_back(j); +} +//------------------------------------------------------------------------------ + +void Clipper::ClearJoins() { + for (JoinList::size_type i = 0; i < m_Joins.size(); i++) + delete m_Joins[i]; + m_Joins.resize(0); +} +//------------------------------------------------------------------------------ + +void Clipper::ClearGhostJoins() { + for (JoinList::size_type i = 0; i < m_GhostJoins.size(); i++) + delete m_GhostJoins[i]; + m_GhostJoins.resize(0); +} +//------------------------------------------------------------------------------ + +void Clipper::AddGhostJoin(OutPt *op, const IntPoint OffPt) { + Join *j = new Join; + j->OutPt1 = op; + j->OutPt2 = 0; + j->OffPt = OffPt; + m_GhostJoins.push_back(j); +} +//------------------------------------------------------------------------------ + +void Clipper::InsertLocalMinimaIntoAEL(const cInt botY) { + const LocalMinimum *lm; + while (PopLocalMinima(botY, lm)) { + TEdge *lb = lm->LeftBound; + TEdge *rb = lm->RightBound; + + OutPt *Op1 = 0; + if (!lb) { + // nb: don't insert LB into either AEL or SEL + InsertEdgeIntoAEL(rb, 0); + SetWindingCount(*rb); + if (IsContributing(*rb)) + Op1 = AddOutPt(rb, rb->Bot); + } else if (!rb) { + InsertEdgeIntoAEL(lb, 0); + SetWindingCount(*lb); + if (IsContributing(*lb)) + Op1 = AddOutPt(lb, lb->Bot); + InsertScanbeam(lb->Top.Y); + } else { + InsertEdgeIntoAEL(lb, 0); + InsertEdgeIntoAEL(rb, lb); + SetWindingCount(*lb); + rb->WindCnt = lb->WindCnt; + rb->WindCnt2 = lb->WindCnt2; + if (IsContributing(*lb)) + Op1 = AddLocalMinPoly(lb, rb, lb->Bot); + InsertScanbeam(lb->Top.Y); + } + + if (rb) { + if (IsHorizontal(*rb)) { + AddEdgeToSEL(rb); + if (rb->NextInLML) + InsertScanbeam(rb->NextInLML->Top.Y); + } else + InsertScanbeam(rb->Top.Y); + } + + if (!lb || !rb) + continue; + + // if any output polygons share an edge, they'll need joining later ... + if (Op1 && IsHorizontal(*rb) && m_GhostJoins.size() > 0 && + (rb->WindDelta != 0)) { + for (JoinList::size_type i = 0; i < m_GhostJoins.size(); ++i) { + Join *jr = m_GhostJoins[i]; + // if the horizontal Rb and a 'ghost' horizontal overlap, then convert + // the 'ghost' join to a real join ready for later ... + if (HorzSegmentsOverlap(jr->OutPt1->Pt.X, jr->OffPt.X, rb->Bot.X, + rb->Top.X)) + AddJoin(jr->OutPt1, Op1, jr->OffPt); + } + } + + if (lb->OutIdx >= 0 && lb->PrevInAEL && + lb->PrevInAEL->Curr.X == lb->Bot.X && lb->PrevInAEL->OutIdx >= 0 && + SlopesEqual(lb->PrevInAEL->Bot, lb->PrevInAEL->Top, lb->Curr, lb->Top, + m_UseFullRange) && + (lb->WindDelta != 0) && (lb->PrevInAEL->WindDelta != 0)) { + OutPt *Op2 = AddOutPt(lb->PrevInAEL, lb->Bot); + AddJoin(Op1, Op2, lb->Top); + } + + if (lb->NextInAEL != rb) { + + if (rb->OutIdx >= 0 && rb->PrevInAEL->OutIdx >= 0 && + SlopesEqual(rb->PrevInAEL->Curr, rb->PrevInAEL->Top, rb->Curr, + rb->Top, m_UseFullRange) && + (rb->WindDelta != 0) && (rb->PrevInAEL->WindDelta != 0)) { + OutPt *Op2 = AddOutPt(rb->PrevInAEL, rb->Bot); + AddJoin(Op1, Op2, rb->Top); + } + + TEdge *e = lb->NextInAEL; + if (e) { + while (e != rb) { + // nb: For calculating winding counts etc, IntersectEdges() assumes + // that param1 will be to the Right of param2 ABOVE the intersection + // ... + IntersectEdges(rb, e, lb->Curr); // order important here + e = e->NextInAEL; + } + } + } + } +} +//------------------------------------------------------------------------------ + +void Clipper::DeleteFromSEL(TEdge *e) { + TEdge *SelPrev = e->PrevInSEL; + TEdge *SelNext = e->NextInSEL; + if (!SelPrev && !SelNext && (e != m_SortedEdges)) + return; // already deleted + if (SelPrev) + SelPrev->NextInSEL = SelNext; + else + m_SortedEdges = SelNext; + if (SelNext) + SelNext->PrevInSEL = SelPrev; + e->NextInSEL = 0; + e->PrevInSEL = 0; +} +//------------------------------------------------------------------------------ + +#ifdef use_xyz +void Clipper::SetZ(IntPoint &pt, TEdge &e1, TEdge &e2) { + if (pt.Z != 0 || !m_ZFill) + return; + else if (pt == e1.Bot) + pt.Z = e1.Bot.Z; + else if (pt == e1.Top) + pt.Z = e1.Top.Z; + else if (pt == e2.Bot) + pt.Z = e2.Bot.Z; + else if (pt == e2.Top) + pt.Z = e2.Top.Z; + else + (*m_ZFill)(e1.Bot, e1.Top, e2.Bot, e2.Top, pt); +} +//------------------------------------------------------------------------------ +#endif + +void Clipper::IntersectEdges(TEdge *e1, TEdge *e2, IntPoint &Pt) { + bool e1Contributing = (e1->OutIdx >= 0); + bool e2Contributing = (e2->OutIdx >= 0); + +#ifdef use_xyz + SetZ(Pt, *e1, *e2); +#endif + +#ifdef use_lines + // if either edge is on an OPEN path ... + if (e1->WindDelta == 0 || e2->WindDelta == 0) { + // ignore subject-subject open path intersections UNLESS they + // are both open paths, AND they are both 'contributing maximas' ... + if (e1->WindDelta == 0 && e2->WindDelta == 0) + return; + + // if intersecting a subj line with a subj poly ... + else if (e1->PolyTyp == e2->PolyTyp && e1->WindDelta != e2->WindDelta && + m_ClipType == ctUnion) { + if (e1->WindDelta == 0) { + if (e2Contributing) { + AddOutPt(e1, Pt); + if (e1Contributing) + e1->OutIdx = Unassigned; + } + } else { + if (e1Contributing) { + AddOutPt(e2, Pt); + if (e2Contributing) + e2->OutIdx = Unassigned; + } + } + } else if (e1->PolyTyp != e2->PolyTyp) { + // toggle subj open path OutIdx on/off when Abs(clip.WndCnt) == 1 ... + if ((e1->WindDelta == 0) && abs(e2->WindCnt) == 1 && + (m_ClipType != ctUnion || e2->WindCnt2 == 0)) { + AddOutPt(e1, Pt); + if (e1Contributing) + e1->OutIdx = Unassigned; + } else if ((e2->WindDelta == 0) && (abs(e1->WindCnt) == 1) && + (m_ClipType != ctUnion || e1->WindCnt2 == 0)) { + AddOutPt(e2, Pt); + if (e2Contributing) + e2->OutIdx = Unassigned; + } + } + return; + } +#endif + + // update winding counts... + // assumes that e1 will be to the Right of e2 ABOVE the intersection + if (e1->PolyTyp == e2->PolyTyp) { + if (IsEvenOddFillType(*e1)) { + int oldE1WindCnt = e1->WindCnt; + e1->WindCnt = e2->WindCnt; + e2->WindCnt = oldE1WindCnt; + } else { + if (e1->WindCnt + e2->WindDelta == 0) + e1->WindCnt = -e1->WindCnt; + else + e1->WindCnt += e2->WindDelta; + if (e2->WindCnt - e1->WindDelta == 0) + e2->WindCnt = -e2->WindCnt; + else + e2->WindCnt -= e1->WindDelta; + } + } else { + if (!IsEvenOddFillType(*e2)) + e1->WindCnt2 += e2->WindDelta; + else + e1->WindCnt2 = (e1->WindCnt2 == 0) ? 1 : 0; + if (!IsEvenOddFillType(*e1)) + e2->WindCnt2 -= e1->WindDelta; + else + e2->WindCnt2 = (e2->WindCnt2 == 0) ? 1 : 0; + } + + PolyFillType e1FillType, e2FillType, e1FillType2, e2FillType2; + if (e1->PolyTyp == ptSubject) { + e1FillType = m_SubjFillType; + e1FillType2 = m_ClipFillType; + } else { + e1FillType = m_ClipFillType; + e1FillType2 = m_SubjFillType; + } + if (e2->PolyTyp == ptSubject) { + e2FillType = m_SubjFillType; + e2FillType2 = m_ClipFillType; + } else { + e2FillType = m_ClipFillType; + e2FillType2 = m_SubjFillType; + } + + cInt e1Wc, e2Wc; + switch (e1FillType) { + case pftPositive: + e1Wc = e1->WindCnt; + break; + case pftNegative: + e1Wc = -e1->WindCnt; + break; + default: + e1Wc = Abs(e1->WindCnt); + } + switch (e2FillType) { + case pftPositive: + e2Wc = e2->WindCnt; + break; + case pftNegative: + e2Wc = -e2->WindCnt; + break; + default: + e2Wc = Abs(e2->WindCnt); + } + + if (e1Contributing && e2Contributing) { + if ((e1Wc != 0 && e1Wc != 1) || (e2Wc != 0 && e2Wc != 1) || + (e1->PolyTyp != e2->PolyTyp && m_ClipType != ctXor)) { + AddLocalMaxPoly(e1, e2, Pt); + } else { + AddOutPt(e1, Pt); + AddOutPt(e2, Pt); + SwapSides(*e1, *e2); + SwapPolyIndexes(*e1, *e2); + } + } else if (e1Contributing) { + if (e2Wc == 0 || e2Wc == 1) { + AddOutPt(e1, Pt); + SwapSides(*e1, *e2); + SwapPolyIndexes(*e1, *e2); + } + } else if (e2Contributing) { + if (e1Wc == 0 || e1Wc == 1) { + AddOutPt(e2, Pt); + SwapSides(*e1, *e2); + SwapPolyIndexes(*e1, *e2); + } + } else if ((e1Wc == 0 || e1Wc == 1) && (e2Wc == 0 || e2Wc == 1)) { + // neither edge is currently contributing ... + + cInt e1Wc2, e2Wc2; + switch (e1FillType2) { + case pftPositive: + e1Wc2 = e1->WindCnt2; + break; + case pftNegative: + e1Wc2 = -e1->WindCnt2; + break; + default: + e1Wc2 = Abs(e1->WindCnt2); + } + switch (e2FillType2) { + case pftPositive: + e2Wc2 = e2->WindCnt2; + break; + case pftNegative: + e2Wc2 = -e2->WindCnt2; + break; + default: + e2Wc2 = Abs(e2->WindCnt2); + } + + if (e1->PolyTyp != e2->PolyTyp) { + AddLocalMinPoly(e1, e2, Pt); + } else if (e1Wc == 1 && e2Wc == 1) + switch (m_ClipType) { + case ctIntersection: + if (e1Wc2 > 0 && e2Wc2 > 0) + AddLocalMinPoly(e1, e2, Pt); + break; + case ctUnion: + if (e1Wc2 <= 0 && e2Wc2 <= 0) + AddLocalMinPoly(e1, e2, Pt); + break; + case ctDifference: + if (((e1->PolyTyp == ptClip) && (e1Wc2 > 0) && (e2Wc2 > 0)) || + ((e1->PolyTyp == ptSubject) && (e1Wc2 <= 0) && (e2Wc2 <= 0))) + AddLocalMinPoly(e1, e2, Pt); + break; + case ctXor: + AddLocalMinPoly(e1, e2, Pt); + } + else + SwapSides(*e1, *e2); + } +} +//------------------------------------------------------------------------------ + +void Clipper::SetHoleState(TEdge *e, OutRec *outrec) { + TEdge *e2 = e->PrevInAEL; + TEdge *eTmp = 0; + while (e2) { + if (e2->OutIdx >= 0 && e2->WindDelta != 0) { + if (!eTmp) + eTmp = e2; + else if (eTmp->OutIdx == e2->OutIdx) + eTmp = 0; + } + e2 = e2->PrevInAEL; + } + if (!eTmp) { + outrec->FirstLeft = 0; + outrec->IsHole = false; + } else { + outrec->FirstLeft = m_PolyOuts[eTmp->OutIdx]; + outrec->IsHole = !outrec->FirstLeft->IsHole; + } +} +//------------------------------------------------------------------------------ + +OutRec *GetLowermostRec(OutRec *outRec1, OutRec *outRec2) { + // work out which polygon fragment has the correct hole state ... + if (!outRec1->BottomPt) + outRec1->BottomPt = GetBottomPt(outRec1->Pts); + if (!outRec2->BottomPt) + outRec2->BottomPt = GetBottomPt(outRec2->Pts); + OutPt *OutPt1 = outRec1->BottomPt; + OutPt *OutPt2 = outRec2->BottomPt; + if (OutPt1->Pt.Y > OutPt2->Pt.Y) + return outRec1; + else if (OutPt1->Pt.Y < OutPt2->Pt.Y) + return outRec2; + else if (OutPt1->Pt.X < OutPt2->Pt.X) + return outRec1; + else if (OutPt1->Pt.X > OutPt2->Pt.X) + return outRec2; + else if (OutPt1->Next == OutPt1) + return outRec2; + else if (OutPt2->Next == OutPt2) + return outRec1; + else if (FirstIsBottomPt(OutPt1, OutPt2)) + return outRec1; + else + return outRec2; +} +//------------------------------------------------------------------------------ + +bool OutRec1RightOfOutRec2(OutRec *outRec1, OutRec *outRec2) { + do { + outRec1 = outRec1->FirstLeft; + if (outRec1 == outRec2) + return true; + } while (outRec1); + return false; +} +//------------------------------------------------------------------------------ + +OutRec *Clipper::GetOutRec(int Idx) { + OutRec *outrec = m_PolyOuts[Idx]; + while (outrec != m_PolyOuts[outrec->Idx]) + outrec = m_PolyOuts[outrec->Idx]; + return outrec; +} +//------------------------------------------------------------------------------ + +void Clipper::AppendPolygon(TEdge *e1, TEdge *e2) { + // get the start and ends of both output polygons ... + OutRec *outRec1 = m_PolyOuts[e1->OutIdx]; + OutRec *outRec2 = m_PolyOuts[e2->OutIdx]; + + OutRec *holeStateRec; + if (OutRec1RightOfOutRec2(outRec1, outRec2)) + holeStateRec = outRec2; + else if (OutRec1RightOfOutRec2(outRec2, outRec1)) + holeStateRec = outRec1; + else + holeStateRec = GetLowermostRec(outRec1, outRec2); + + // get the start and ends of both output polygons and + // join e2 poly onto e1 poly and delete pointers to e2 ... + + OutPt *p1_lft = outRec1->Pts; + OutPt *p1_rt = p1_lft->Prev; + OutPt *p2_lft = outRec2->Pts; + OutPt *p2_rt = p2_lft->Prev; + + // join e2 poly onto e1 poly and delete pointers to e2 ... + if (e1->Side == esLeft) { + if (e2->Side == esLeft) { + // z y x a b c + ReversePolyPtLinks(p2_lft); + p2_lft->Next = p1_lft; + p1_lft->Prev = p2_lft; + p1_rt->Next = p2_rt; + p2_rt->Prev = p1_rt; + outRec1->Pts = p2_rt; + } else { + // x y z a b c + p2_rt->Next = p1_lft; + p1_lft->Prev = p2_rt; + p2_lft->Prev = p1_rt; + p1_rt->Next = p2_lft; + outRec1->Pts = p2_lft; + } + } else { + if (e2->Side == esRight) { + // a b c z y x + ReversePolyPtLinks(p2_lft); + p1_rt->Next = p2_rt; + p2_rt->Prev = p1_rt; + p2_lft->Next = p1_lft; + p1_lft->Prev = p2_lft; + } else { + // a b c x y z + p1_rt->Next = p2_lft; + p2_lft->Prev = p1_rt; + p1_lft->Prev = p2_rt; + p2_rt->Next = p1_lft; + } + } + + outRec1->BottomPt = 0; + if (holeStateRec == outRec2) { + if (outRec2->FirstLeft != outRec1) + outRec1->FirstLeft = outRec2->FirstLeft; + outRec1->IsHole = outRec2->IsHole; + } + outRec2->Pts = 0; + outRec2->BottomPt = 0; + outRec2->FirstLeft = outRec1; + + int OKIdx = e1->OutIdx; + int ObsoleteIdx = e2->OutIdx; + + e1->OutIdx = + Unassigned; // nb: safe because we only get here via AddLocalMaxPoly + e2->OutIdx = Unassigned; + + TEdge *e = m_ActiveEdges; + while (e) { + if (e->OutIdx == ObsoleteIdx) { + e->OutIdx = OKIdx; + e->Side = e1->Side; + break; + } + e = e->NextInAEL; + } + + outRec2->Idx = outRec1->Idx; +} +//------------------------------------------------------------------------------ + +OutPt *Clipper::AddOutPt(TEdge *e, const IntPoint &pt) { + if (e->OutIdx < 0) { + OutRec *outRec = CreateOutRec(); + outRec->IsOpen = (e->WindDelta == 0); + OutPt *newOp = new OutPt; + outRec->Pts = newOp; + newOp->Idx = outRec->Idx; + newOp->Pt = pt; + newOp->Next = newOp; + newOp->Prev = newOp; + if (!outRec->IsOpen) + SetHoleState(e, outRec); + e->OutIdx = outRec->Idx; + return newOp; + } else { + OutRec *outRec = m_PolyOuts[e->OutIdx]; + // OutRec.Pts is the 'Left-most' point & OutRec.Pts.Prev is the 'Right-most' + OutPt *op = outRec->Pts; + + bool ToFront = (e->Side == esLeft); + if (ToFront && (pt == op->Pt)) + return op; + else if (!ToFront && (pt == op->Prev->Pt)) + return op->Prev; + + OutPt *newOp = new OutPt; + newOp->Idx = outRec->Idx; + newOp->Pt = pt; + newOp->Next = op; + newOp->Prev = op->Prev; + newOp->Prev->Next = newOp; + op->Prev = newOp; + if (ToFront) + outRec->Pts = newOp; + return newOp; + } +} +//------------------------------------------------------------------------------ + +OutPt *Clipper::GetLastOutPt(TEdge *e) { + OutRec *outRec = m_PolyOuts[e->OutIdx]; + if (e->Side == esLeft) + return outRec->Pts; + else + return outRec->Pts->Prev; +} +//------------------------------------------------------------------------------ + +void Clipper::ProcessHorizontals() { + TEdge *horzEdge; + while (PopEdgeFromSEL(horzEdge)) + ProcessHorizontal(horzEdge); +} +//------------------------------------------------------------------------------ + +inline bool IsMinima(TEdge *e) { + return e && (e->Prev->NextInLML != e) && (e->Next->NextInLML != e); +} +//------------------------------------------------------------------------------ + +inline bool IsMaxima(TEdge *e, const cInt Y) { + return e && e->Top.Y == Y && !e->NextInLML; +} +//------------------------------------------------------------------------------ + +inline bool IsIntermediate(TEdge *e, const cInt Y) { + return e->Top.Y == Y && e->NextInLML; +} +//------------------------------------------------------------------------------ + +TEdge *GetMaximaPair(TEdge *e) { + if ((e->Next->Top == e->Top) && !e->Next->NextInLML) + return e->Next; + else if ((e->Prev->Top == e->Top) && !e->Prev->NextInLML) + return e->Prev; + else + return 0; +} +//------------------------------------------------------------------------------ + +TEdge *GetMaximaPairEx(TEdge *e) { + // as GetMaximaPair() but returns 0 if MaxPair isn't in AEL (unless it's + // horizontal) + TEdge *result = GetMaximaPair(e); + if (result && + (result->OutIdx == Skip || + (result->NextInAEL == result->PrevInAEL && !IsHorizontal(*result)))) + return 0; + return result; +} +//------------------------------------------------------------------------------ + +void Clipper::SwapPositionsInSEL(TEdge *Edge1, TEdge *Edge2) { + if (!(Edge1->NextInSEL) && !(Edge1->PrevInSEL)) + return; + if (!(Edge2->NextInSEL) && !(Edge2->PrevInSEL)) + return; + + if (Edge1->NextInSEL == Edge2) { + TEdge *Next = Edge2->NextInSEL; + if (Next) + Next->PrevInSEL = Edge1; + TEdge *Prev = Edge1->PrevInSEL; + if (Prev) + Prev->NextInSEL = Edge2; + Edge2->PrevInSEL = Prev; + Edge2->NextInSEL = Edge1; + Edge1->PrevInSEL = Edge2; + Edge1->NextInSEL = Next; + } else if (Edge2->NextInSEL == Edge1) { + TEdge *Next = Edge1->NextInSEL; + if (Next) + Next->PrevInSEL = Edge2; + TEdge *Prev = Edge2->PrevInSEL; + if (Prev) + Prev->NextInSEL = Edge1; + Edge1->PrevInSEL = Prev; + Edge1->NextInSEL = Edge2; + Edge2->PrevInSEL = Edge1; + Edge2->NextInSEL = Next; + } else { + TEdge *Next = Edge1->NextInSEL; + TEdge *Prev = Edge1->PrevInSEL; + Edge1->NextInSEL = Edge2->NextInSEL; + if (Edge1->NextInSEL) + Edge1->NextInSEL->PrevInSEL = Edge1; + Edge1->PrevInSEL = Edge2->PrevInSEL; + if (Edge1->PrevInSEL) + Edge1->PrevInSEL->NextInSEL = Edge1; + Edge2->NextInSEL = Next; + if (Edge2->NextInSEL) + Edge2->NextInSEL->PrevInSEL = Edge2; + Edge2->PrevInSEL = Prev; + if (Edge2->PrevInSEL) + Edge2->PrevInSEL->NextInSEL = Edge2; + } + + if (!Edge1->PrevInSEL) + m_SortedEdges = Edge1; + else if (!Edge2->PrevInSEL) + m_SortedEdges = Edge2; +} +//------------------------------------------------------------------------------ + +TEdge *GetNextInAEL(TEdge *e, Direction dir) { + return dir == dLeftToRight ? e->NextInAEL : e->PrevInAEL; +} +//------------------------------------------------------------------------------ + +void GetHorzDirection(TEdge &HorzEdge, Direction &Dir, cInt &Left, + cInt &Right) { + if (HorzEdge.Bot.X < HorzEdge.Top.X) { + Left = HorzEdge.Bot.X; + Right = HorzEdge.Top.X; + Dir = dLeftToRight; + } else { + Left = HorzEdge.Top.X; + Right = HorzEdge.Bot.X; + Dir = dRightToLeft; + } +} +//------------------------------------------------------------------------ + +/******************************************************************************* +* Notes: Horizontal edges (HEs) at scanline intersections (ie at the Top or * +* Bottom of a scanbeam) are processed as if layered. The order in which HEs * +* are processed doesn't matter. HEs intersect with other HE Bot.Xs only [#] * +* (or they could intersect with Top.Xs only, ie EITHER Bot.Xs OR Top.Xs), * +* and with other non-horizontal edges [*]. Once these intersections are * +* processed, intermediate HEs then 'promote' the Edge above (NextInLML) into * +* the AEL. These 'promoted' edges may in turn intersect [%] with other HEs. * +*******************************************************************************/ + +void Clipper::ProcessHorizontal(TEdge *horzEdge) { + Direction dir; + cInt horzLeft, horzRight; + bool IsOpen = (horzEdge->WindDelta == 0); + + GetHorzDirection(*horzEdge, dir, horzLeft, horzRight); + + TEdge *eLastHorz = horzEdge, *eMaxPair = 0; + while (eLastHorz->NextInLML && IsHorizontal(*eLastHorz->NextInLML)) + eLastHorz = eLastHorz->NextInLML; + if (!eLastHorz->NextInLML) + eMaxPair = GetMaximaPair(eLastHorz); + + MaximaList::const_iterator maxIt; + MaximaList::const_reverse_iterator maxRit; + if (m_Maxima.size() > 0) { + // get the first maxima in range (X) ... + if (dir == dLeftToRight) { + maxIt = m_Maxima.begin(); + while (maxIt != m_Maxima.end() && *maxIt <= horzEdge->Bot.X) + maxIt++; + if (maxIt != m_Maxima.end() && *maxIt >= eLastHorz->Top.X) + maxIt = m_Maxima.end(); + } else { + maxRit = m_Maxima.rbegin(); + while (maxRit != m_Maxima.rend() && *maxRit > horzEdge->Bot.X) + maxRit++; + if (maxRit != m_Maxima.rend() && *maxRit <= eLastHorz->Top.X) + maxRit = m_Maxima.rend(); + } + } + + OutPt *op1 = 0; + + for (;;) // loop through consec. horizontal edges + { + + bool IsLastHorz = (horzEdge == eLastHorz); + TEdge *e = GetNextInAEL(horzEdge, dir); + while (e) { + + // this code block inserts extra coords into horizontal edges (in output + // polygons) whereever maxima touch these horizontal edges. This helps + //'simplifying' polygons (ie if the Simplify property is set). + if (m_Maxima.size() > 0) { + if (dir == dLeftToRight) { + while (maxIt != m_Maxima.end() && *maxIt < e->Curr.X) { + if (horzEdge->OutIdx >= 0 && !IsOpen) + AddOutPt(horzEdge, IntPoint(*maxIt, horzEdge->Bot.Y)); + maxIt++; + } + } else { + while (maxRit != m_Maxima.rend() && *maxRit > e->Curr.X) { + if (horzEdge->OutIdx >= 0 && !IsOpen) + AddOutPt(horzEdge, IntPoint(*maxRit, horzEdge->Bot.Y)); + maxRit++; + } + } + }; + + if ((dir == dLeftToRight && e->Curr.X > horzRight) || + (dir == dRightToLeft && e->Curr.X < horzLeft)) + break; + + // Also break if we've got to the end of an intermediate horizontal edge + // ... + // nb: Smaller Dx's are to the right of larger Dx's ABOVE the horizontal. + if (e->Curr.X == horzEdge->Top.X && horzEdge->NextInLML && + e->Dx < horzEdge->NextInLML->Dx) + break; + + if (horzEdge->OutIdx >= 0 && !IsOpen) // note: may be done multiple times + { +#ifdef use_xyz + if (dir == dLeftToRight) + SetZ(e->Curr, *horzEdge, *e); + else + SetZ(e->Curr, *e, *horzEdge); +#endif + op1 = AddOutPt(horzEdge, e->Curr); + TEdge *eNextHorz = m_SortedEdges; + while (eNextHorz) { + if (eNextHorz->OutIdx >= 0 && + HorzSegmentsOverlap(horzEdge->Bot.X, horzEdge->Top.X, + eNextHorz->Bot.X, eNextHorz->Top.X)) { + OutPt *op2 = GetLastOutPt(eNextHorz); + AddJoin(op2, op1, eNextHorz->Top); + } + eNextHorz = eNextHorz->NextInSEL; + } + AddGhostJoin(op1, horzEdge->Bot); + } + + // OK, so far we're still in range of the horizontal Edge but make sure + // we're at the last of consec. horizontals when matching with eMaxPair + if (e == eMaxPair && IsLastHorz) { + if (horzEdge->OutIdx >= 0) + AddLocalMaxPoly(horzEdge, eMaxPair, horzEdge->Top); + DeleteFromAEL(horzEdge); + DeleteFromAEL(eMaxPair); + return; + } + + if (dir == dLeftToRight) { + IntPoint Pt = IntPoint(e->Curr.X, horzEdge->Curr.Y); + IntersectEdges(horzEdge, e, Pt); + } else { + IntPoint Pt = IntPoint(e->Curr.X, horzEdge->Curr.Y); + IntersectEdges(e, horzEdge, Pt); + } + TEdge *eNext = GetNextInAEL(e, dir); + SwapPositionsInAEL(horzEdge, e); + e = eNext; + } // end while(e) + + // Break out of loop if HorzEdge.NextInLML is not also horizontal ... + if (!horzEdge->NextInLML || !IsHorizontal(*horzEdge->NextInLML)) + break; + + UpdateEdgeIntoAEL(horzEdge); + if (horzEdge->OutIdx >= 0) + AddOutPt(horzEdge, horzEdge->Bot); + GetHorzDirection(*horzEdge, dir, horzLeft, horzRight); + + } // end for (;;) + + if (horzEdge->OutIdx >= 0 && !op1) { + op1 = GetLastOutPt(horzEdge); + TEdge *eNextHorz = m_SortedEdges; + while (eNextHorz) { + if (eNextHorz->OutIdx >= 0 && + HorzSegmentsOverlap(horzEdge->Bot.X, horzEdge->Top.X, + eNextHorz->Bot.X, eNextHorz->Top.X)) { + OutPt *op2 = GetLastOutPt(eNextHorz); + AddJoin(op2, op1, eNextHorz->Top); + } + eNextHorz = eNextHorz->NextInSEL; + } + AddGhostJoin(op1, horzEdge->Top); + } + + if (horzEdge->NextInLML) { + if (horzEdge->OutIdx >= 0) { + op1 = AddOutPt(horzEdge, horzEdge->Top); + UpdateEdgeIntoAEL(horzEdge); + if (horzEdge->WindDelta == 0) + return; + // nb: HorzEdge is no longer horizontal here + TEdge *ePrev = horzEdge->PrevInAEL; + TEdge *eNext = horzEdge->NextInAEL; + if (ePrev && ePrev->Curr.X == horzEdge->Bot.X && + ePrev->Curr.Y == horzEdge->Bot.Y && ePrev->WindDelta != 0 && + (ePrev->OutIdx >= 0 && ePrev->Curr.Y > ePrev->Top.Y && + SlopesEqual(*horzEdge, *ePrev, m_UseFullRange))) { + OutPt *op2 = AddOutPt(ePrev, horzEdge->Bot); + AddJoin(op1, op2, horzEdge->Top); + } else if (eNext && eNext->Curr.X == horzEdge->Bot.X && + eNext->Curr.Y == horzEdge->Bot.Y && eNext->WindDelta != 0 && + eNext->OutIdx >= 0 && eNext->Curr.Y > eNext->Top.Y && + SlopesEqual(*horzEdge, *eNext, m_UseFullRange)) { + OutPt *op2 = AddOutPt(eNext, horzEdge->Bot); + AddJoin(op1, op2, horzEdge->Top); + } + } else + UpdateEdgeIntoAEL(horzEdge); + } else { + if (horzEdge->OutIdx >= 0) + AddOutPt(horzEdge, horzEdge->Top); + DeleteFromAEL(horzEdge); + } +} +//------------------------------------------------------------------------------ + +bool Clipper::ProcessIntersections(const cInt topY) { + if (!m_ActiveEdges) + return true; + try { + BuildIntersectList(topY); + size_t IlSize = m_IntersectList.size(); + if (IlSize == 0) + return true; + if (IlSize == 1 || FixupIntersectionOrder()) + ProcessIntersectList(); + else + return false; + } catch (...) { + m_SortedEdges = 0; + DisposeIntersectNodes(); + throw clipperException("ProcessIntersections error"); + } + m_SortedEdges = 0; + return true; +} +//------------------------------------------------------------------------------ + +void Clipper::DisposeIntersectNodes() { + for (size_t i = 0; i < m_IntersectList.size(); ++i) + delete m_IntersectList[i]; + m_IntersectList.clear(); +} +//------------------------------------------------------------------------------ + +void Clipper::BuildIntersectList(const cInt topY) { + if (!m_ActiveEdges) + return; + + // prepare for sorting ... + TEdge *e = m_ActiveEdges; + m_SortedEdges = e; + while (e) { + e->PrevInSEL = e->PrevInAEL; + e->NextInSEL = e->NextInAEL; + e->Curr.X = TopX(*e, topY); + e = e->NextInAEL; + } + + // bubblesort ... + bool isModified; + do { + isModified = false; + e = m_SortedEdges; + while (e->NextInSEL) { + TEdge *eNext = e->NextInSEL; + IntPoint Pt; + if (e->Curr.X > eNext->Curr.X) { + IntersectPoint(*e, *eNext, Pt); + if (Pt.Y < topY) + Pt = IntPoint(TopX(*e, topY), topY); + IntersectNode *newNode = new IntersectNode; + newNode->Edge1 = e; + newNode->Edge2 = eNext; + newNode->Pt = Pt; + m_IntersectList.push_back(newNode); + + SwapPositionsInSEL(e, eNext); + isModified = true; + } else + e = eNext; + } + if (e->PrevInSEL) + e->PrevInSEL->NextInSEL = 0; + else + break; + } while (isModified); + m_SortedEdges = 0; // important +} +//------------------------------------------------------------------------------ + +void Clipper::ProcessIntersectList() { + for (size_t i = 0; i < m_IntersectList.size(); ++i) { + IntersectNode *iNode = m_IntersectList[i]; + { + IntersectEdges(iNode->Edge1, iNode->Edge2, iNode->Pt); + SwapPositionsInAEL(iNode->Edge1, iNode->Edge2); + } + delete iNode; + } + m_IntersectList.clear(); +} +//------------------------------------------------------------------------------ + +bool IntersectListSort(IntersectNode *node1, IntersectNode *node2) { + return node2->Pt.Y < node1->Pt.Y; +} +//------------------------------------------------------------------------------ + +inline bool EdgesAdjacent(const IntersectNode &inode) { + return (inode.Edge1->NextInSEL == inode.Edge2) || + (inode.Edge1->PrevInSEL == inode.Edge2); +} +//------------------------------------------------------------------------------ + +bool Clipper::FixupIntersectionOrder() { + // pre-condition: intersections are sorted Bottom-most first. + // Now it's crucial that intersections are made only between adjacent edges, + // so to ensure this the order of intersections may need adjusting ... + CopyAELToSEL(); + std::sort(m_IntersectList.begin(), m_IntersectList.end(), IntersectListSort); + size_t cnt = m_IntersectList.size(); + for (size_t i = 0; i < cnt; ++i) { + if (!EdgesAdjacent(*m_IntersectList[i])) { + size_t j = i + 1; + while (j < cnt && !EdgesAdjacent(*m_IntersectList[j])) + j++; + if (j == cnt) + return false; + std::swap(m_IntersectList[i], m_IntersectList[j]); + } + SwapPositionsInSEL(m_IntersectList[i]->Edge1, m_IntersectList[i]->Edge2); + } + return true; +} +//------------------------------------------------------------------------------ + +void Clipper::DoMaxima(TEdge *e) { + TEdge *eMaxPair = GetMaximaPairEx(e); + if (!eMaxPair) { + if (e->OutIdx >= 0) + AddOutPt(e, e->Top); + DeleteFromAEL(e); + return; + } + + TEdge *eNext = e->NextInAEL; + while (eNext && eNext != eMaxPair) { + IntersectEdges(e, eNext, e->Top); + SwapPositionsInAEL(e, eNext); + eNext = e->NextInAEL; + } + + if (e->OutIdx == Unassigned && eMaxPair->OutIdx == Unassigned) { + DeleteFromAEL(e); + DeleteFromAEL(eMaxPair); + } else if (e->OutIdx >= 0 && eMaxPair->OutIdx >= 0) { + if (e->OutIdx >= 0) + AddLocalMaxPoly(e, eMaxPair, e->Top); + DeleteFromAEL(e); + DeleteFromAEL(eMaxPair); + } +#ifdef use_lines + else if (e->WindDelta == 0) { + if (e->OutIdx >= 0) { + AddOutPt(e, e->Top); + e->OutIdx = Unassigned; + } + DeleteFromAEL(e); + + if (eMaxPair->OutIdx >= 0) { + AddOutPt(eMaxPair, e->Top); + eMaxPair->OutIdx = Unassigned; + } + DeleteFromAEL(eMaxPair); + } +#endif + else + throw clipperException("DoMaxima error"); +} +//------------------------------------------------------------------------------ + +void Clipper::ProcessEdgesAtTopOfScanbeam(const cInt topY) { + TEdge *e = m_ActiveEdges; + while (e) { + // 1. process maxima, treating them as if they're 'bent' horizontal edges, + // but exclude maxima with horizontal edges. nb: e can't be a horizontal. + bool IsMaximaEdge = IsMaxima(e, topY); + + if (IsMaximaEdge) { + TEdge *eMaxPair = GetMaximaPairEx(e); + IsMaximaEdge = (!eMaxPair || !IsHorizontal(*eMaxPair)); + } + + if (IsMaximaEdge) { + if (m_StrictSimple) + m_Maxima.push_back(e->Top.X); + TEdge *ePrev = e->PrevInAEL; + DoMaxima(e); + if (!ePrev) + e = m_ActiveEdges; + else + e = ePrev->NextInAEL; + } else { + // 2. promote horizontal edges, otherwise update Curr.X and Curr.Y ... + if (IsIntermediate(e, topY) && IsHorizontal(*e->NextInLML)) { + UpdateEdgeIntoAEL(e); + if (e->OutIdx >= 0) + AddOutPt(e, e->Bot); + AddEdgeToSEL(e); + } else { + e->Curr.X = TopX(*e, topY); + e->Curr.Y = topY; +#ifdef use_xyz + e->Curr.Z = + topY == e->Top.Y ? e->Top.Z : (topY == e->Bot.Y ? e->Bot.Z : 0); +#endif + } + + // When StrictlySimple and 'e' is being touched by another edge, then + // make sure both edges have a vertex here ... + if (m_StrictSimple) { + TEdge *ePrev = e->PrevInAEL; + if ((e->OutIdx >= 0) && (e->WindDelta != 0) && ePrev && + (ePrev->OutIdx >= 0) && (ePrev->Curr.X == e->Curr.X) && + (ePrev->WindDelta != 0)) { + IntPoint pt = e->Curr; +#ifdef use_xyz + SetZ(pt, *ePrev, *e); +#endif + OutPt *op = AddOutPt(ePrev, pt); + OutPt *op2 = AddOutPt(e, pt); + AddJoin(op, op2, pt); // StrictlySimple (type-3) join + } + } + + e = e->NextInAEL; + } + } + + // 3. Process horizontals at the Top of the scanbeam ... + m_Maxima.sort(); + ProcessHorizontals(); + m_Maxima.clear(); + + // 4. Promote intermediate vertices ... + e = m_ActiveEdges; + while (e) { + if (IsIntermediate(e, topY)) { + OutPt *op = 0; + if (e->OutIdx >= 0) + op = AddOutPt(e, e->Top); + UpdateEdgeIntoAEL(e); + + // if output polygons share an edge, they'll need joining later ... + TEdge *ePrev = e->PrevInAEL; + TEdge *eNext = e->NextInAEL; + if (ePrev && ePrev->Curr.X == e->Bot.X && ePrev->Curr.Y == e->Bot.Y && + op && ePrev->OutIdx >= 0 && ePrev->Curr.Y > ePrev->Top.Y && + SlopesEqual(e->Curr, e->Top, ePrev->Curr, ePrev->Top, + m_UseFullRange) && + (e->WindDelta != 0) && (ePrev->WindDelta != 0)) { + OutPt *op2 = AddOutPt(ePrev, e->Bot); + AddJoin(op, op2, e->Top); + } else if (eNext && eNext->Curr.X == e->Bot.X && + eNext->Curr.Y == e->Bot.Y && op && eNext->OutIdx >= 0 && + eNext->Curr.Y > eNext->Top.Y && + SlopesEqual(e->Curr, e->Top, eNext->Curr, eNext->Top, + m_UseFullRange) && + (e->WindDelta != 0) && (eNext->WindDelta != 0)) { + OutPt *op2 = AddOutPt(eNext, e->Bot); + AddJoin(op, op2, e->Top); + } + } + e = e->NextInAEL; + } +} +//------------------------------------------------------------------------------ + +void Clipper::FixupOutPolyline(OutRec &outrec) { + OutPt *pp = outrec.Pts; + OutPt *lastPP = pp->Prev; + while (pp != lastPP) { + pp = pp->Next; + if (pp->Pt == pp->Prev->Pt) { + if (pp == lastPP) + lastPP = pp->Prev; + OutPt *tmpPP = pp->Prev; + tmpPP->Next = pp->Next; + pp->Next->Prev = tmpPP; + delete pp; + pp = tmpPP; + } + } + + if (pp == pp->Prev) { + DisposeOutPts(pp); + outrec.Pts = 0; + return; + } +} +//------------------------------------------------------------------------------ + +void Clipper::FixupOutPolygon(OutRec &outrec) { + // FixupOutPolygon() - removes duplicate points and simplifies consecutive + // parallel edges by removing the middle vertex. + OutPt *lastOK = 0; + outrec.BottomPt = 0; + OutPt *pp = outrec.Pts; + bool preserveCol = m_PreserveCollinear || m_StrictSimple; + + for (;;) { + if (pp->Prev == pp || pp->Prev == pp->Next) { + DisposeOutPts(pp); + outrec.Pts = 0; + return; + } + + // test for duplicate points and collinear edges ... + if ((pp->Pt == pp->Next->Pt) || (pp->Pt == pp->Prev->Pt) || + (SlopesEqual(pp->Prev->Pt, pp->Pt, pp->Next->Pt, m_UseFullRange) && + (!preserveCol || + !Pt2IsBetweenPt1AndPt3(pp->Prev->Pt, pp->Pt, pp->Next->Pt)))) { + lastOK = 0; + OutPt *tmp = pp; + pp->Prev->Next = pp->Next; + pp->Next->Prev = pp->Prev; + pp = pp->Prev; + delete tmp; + } else if (pp == lastOK) + break; + else { + if (!lastOK) + lastOK = pp; + pp = pp->Next; + } + } + outrec.Pts = pp; +} +//------------------------------------------------------------------------------ + +int PointCount(OutPt *Pts) { + if (!Pts) + return 0; + int result = 0; + OutPt *p = Pts; + do { + result++; + p = p->Next; + } while (p != Pts); + return result; +} +//------------------------------------------------------------------------------ + +void Clipper::BuildResult(Paths &polys) { + polys.reserve(m_PolyOuts.size()); + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) { + if (!m_PolyOuts[i]->Pts) + continue; + Path pg; + OutPt *p = m_PolyOuts[i]->Pts->Prev; + int cnt = PointCount(p); + if (cnt < 2) + continue; + pg.reserve(cnt); + for (int i = 0; i < cnt; ++i) { + pg.push_back(p->Pt); + p = p->Prev; + } + polys.push_back(pg); + } +} +//------------------------------------------------------------------------------ + +void Clipper::BuildResult2(PolyTree &polytree) { + polytree.Clear(); + polytree.AllNodes.reserve(m_PolyOuts.size()); + // add each output polygon/contour to polytree ... + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); i++) { + OutRec *outRec = m_PolyOuts[i]; + int cnt = PointCount(outRec->Pts); + if ((outRec->IsOpen && cnt < 2) || (!outRec->IsOpen && cnt < 3)) + continue; + FixHoleLinkage(*outRec); + PolyNode *pn = new PolyNode(); + // nb: polytree takes ownership of all the PolyNodes + polytree.AllNodes.push_back(pn); + outRec->PolyNd = pn; + pn->Parent = 0; + pn->Index = 0; + pn->Contour.reserve(cnt); + OutPt *op = outRec->Pts->Prev; + for (int j = 0; j < cnt; j++) { + pn->Contour.push_back(op->Pt); + op = op->Prev; + } + } + + // fixup PolyNode links etc ... + polytree.Childs.reserve(m_PolyOuts.size()); + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); i++) { + OutRec *outRec = m_PolyOuts[i]; + if (!outRec->PolyNd) + continue; + if (outRec->IsOpen) { + outRec->PolyNd->m_IsOpen = true; + polytree.AddChild(*outRec->PolyNd); + } else if (outRec->FirstLeft && outRec->FirstLeft->PolyNd) + outRec->FirstLeft->PolyNd->AddChild(*outRec->PolyNd); + else + polytree.AddChild(*outRec->PolyNd); + } +} +//------------------------------------------------------------------------------ + +void SwapIntersectNodes(IntersectNode &int1, IntersectNode &int2) { + // just swap the contents (because fIntersectNodes is a single-linked-list) + IntersectNode inode = int1; // gets a copy of Int1 + int1.Edge1 = int2.Edge1; + int1.Edge2 = int2.Edge2; + int1.Pt = int2.Pt; + int2.Edge1 = inode.Edge1; + int2.Edge2 = inode.Edge2; + int2.Pt = inode.Pt; +} +//------------------------------------------------------------------------------ + +inline bool E2InsertsBeforeE1(TEdge &e1, TEdge &e2) { + if (e2.Curr.X == e1.Curr.X) { + if (e2.Top.Y > e1.Top.Y) + return e2.Top.X < TopX(e1, e2.Top.Y); + else + return e1.Top.X > TopX(e2, e1.Top.Y); + } else + return e2.Curr.X < e1.Curr.X; +} +//------------------------------------------------------------------------------ + +bool GetOverlap(const cInt a1, const cInt a2, const cInt b1, const cInt b2, + cInt &Left, cInt &Right) { + if (a1 < a2) { + if (b1 < b2) { + Left = std::max(a1, b1); + Right = std::min(a2, b2); + } else { + Left = std::max(a1, b2); + Right = std::min(a2, b1); + } + } else { + if (b1 < b2) { + Left = std::max(a2, b1); + Right = std::min(a1, b2); + } else { + Left = std::max(a2, b2); + Right = std::min(a1, b1); + } + } + return Left < Right; +} +//------------------------------------------------------------------------------ + +inline void UpdateOutPtIdxs(OutRec &outrec) { + OutPt *op = outrec.Pts; + do { + op->Idx = outrec.Idx; + op = op->Prev; + } while (op != outrec.Pts); +} +//------------------------------------------------------------------------------ + +void Clipper::InsertEdgeIntoAEL(TEdge *edge, TEdge *startEdge) { + if (!m_ActiveEdges) { + edge->PrevInAEL = 0; + edge->NextInAEL = 0; + m_ActiveEdges = edge; + } else if (!startEdge && E2InsertsBeforeE1(*m_ActiveEdges, *edge)) { + edge->PrevInAEL = 0; + edge->NextInAEL = m_ActiveEdges; + m_ActiveEdges->PrevInAEL = edge; + m_ActiveEdges = edge; + } else { + if (!startEdge) + startEdge = m_ActiveEdges; + while (startEdge->NextInAEL && + !E2InsertsBeforeE1(*startEdge->NextInAEL, *edge)) + startEdge = startEdge->NextInAEL; + edge->NextInAEL = startEdge->NextInAEL; + if (startEdge->NextInAEL) + startEdge->NextInAEL->PrevInAEL = edge; + edge->PrevInAEL = startEdge; + startEdge->NextInAEL = edge; + } +} +//---------------------------------------------------------------------- + +OutPt *DupOutPt(OutPt *outPt, bool InsertAfter) { + OutPt *result = new OutPt; + result->Pt = outPt->Pt; + result->Idx = outPt->Idx; + if (InsertAfter) { + result->Next = outPt->Next; + result->Prev = outPt; + outPt->Next->Prev = result; + outPt->Next = result; + } else { + result->Prev = outPt->Prev; + result->Next = outPt; + outPt->Prev->Next = result; + outPt->Prev = result; + } + return result; +} +//------------------------------------------------------------------------------ + +bool JoinHorz(OutPt *op1, OutPt *op1b, OutPt *op2, OutPt *op2b, + const IntPoint Pt, bool DiscardLeft) { + Direction Dir1 = (op1->Pt.X > op1b->Pt.X ? dRightToLeft : dLeftToRight); + Direction Dir2 = (op2->Pt.X > op2b->Pt.X ? dRightToLeft : dLeftToRight); + if (Dir1 == Dir2) + return false; + + // When DiscardLeft, we want Op1b to be on the Left of Op1, otherwise we + // want Op1b to be on the Right. (And likewise with Op2 and Op2b.) + // So, to facilitate this while inserting Op1b and Op2b ... + // when DiscardLeft, make sure we're AT or RIGHT of Pt before adding Op1b, + // otherwise make sure we're AT or LEFT of Pt. (Likewise with Op2b.) + if (Dir1 == dLeftToRight) { + while (op1->Next->Pt.X <= Pt.X && op1->Next->Pt.X >= op1->Pt.X && + op1->Next->Pt.Y == Pt.Y) + op1 = op1->Next; + if (DiscardLeft && (op1->Pt.X != Pt.X)) + op1 = op1->Next; + op1b = DupOutPt(op1, !DiscardLeft); + if (op1b->Pt != Pt) { + op1 = op1b; + op1->Pt = Pt; + op1b = DupOutPt(op1, !DiscardLeft); + } + } else { + while (op1->Next->Pt.X >= Pt.X && op1->Next->Pt.X <= op1->Pt.X && + op1->Next->Pt.Y == Pt.Y) + op1 = op1->Next; + if (!DiscardLeft && (op1->Pt.X != Pt.X)) + op1 = op1->Next; + op1b = DupOutPt(op1, DiscardLeft); + if (op1b->Pt != Pt) { + op1 = op1b; + op1->Pt = Pt; + op1b = DupOutPt(op1, DiscardLeft); + } + } + + if (Dir2 == dLeftToRight) { + while (op2->Next->Pt.X <= Pt.X && op2->Next->Pt.X >= op2->Pt.X && + op2->Next->Pt.Y == Pt.Y) + op2 = op2->Next; + if (DiscardLeft && (op2->Pt.X != Pt.X)) + op2 = op2->Next; + op2b = DupOutPt(op2, !DiscardLeft); + if (op2b->Pt != Pt) { + op2 = op2b; + op2->Pt = Pt; + op2b = DupOutPt(op2, !DiscardLeft); + }; + } else { + while (op2->Next->Pt.X >= Pt.X && op2->Next->Pt.X <= op2->Pt.X && + op2->Next->Pt.Y == Pt.Y) + op2 = op2->Next; + if (!DiscardLeft && (op2->Pt.X != Pt.X)) + op2 = op2->Next; + op2b = DupOutPt(op2, DiscardLeft); + if (op2b->Pt != Pt) { + op2 = op2b; + op2->Pt = Pt; + op2b = DupOutPt(op2, DiscardLeft); + }; + }; + + if ((Dir1 == dLeftToRight) == DiscardLeft) { + op1->Prev = op2; + op2->Next = op1; + op1b->Next = op2b; + op2b->Prev = op1b; + } else { + op1->Next = op2; + op2->Prev = op1; + op1b->Prev = op2b; + op2b->Next = op1b; + } + return true; +} +//------------------------------------------------------------------------------ + +bool Clipper::JoinPoints(Join *j, OutRec *outRec1, OutRec *outRec2) { + OutPt *op1 = j->OutPt1, *op1b; + OutPt *op2 = j->OutPt2, *op2b; + + // There are 3 kinds of joins for output polygons ... + // 1. Horizontal joins where Join.OutPt1 & Join.OutPt2 are vertices anywhere + // along (horizontal) collinear edges (& Join.OffPt is on the same + // horizontal). + // 2. Non-horizontal joins where Join.OutPt1 & Join.OutPt2 are at the same + // location at the Bottom of the overlapping segment (& Join.OffPt is above). + // 3. StrictSimple joins where edges touch but are not collinear and where + // Join.OutPt1, Join.OutPt2 & Join.OffPt all share the same point. + bool isHorizontal = (j->OutPt1->Pt.Y == j->OffPt.Y); + + if (isHorizontal && (j->OffPt == j->OutPt1->Pt) && + (j->OffPt == j->OutPt2->Pt)) { + // Strictly Simple join ... + if (outRec1 != outRec2) + return false; + op1b = j->OutPt1->Next; + while (op1b != op1 && (op1b->Pt == j->OffPt)) + op1b = op1b->Next; + bool reverse1 = (op1b->Pt.Y > j->OffPt.Y); + op2b = j->OutPt2->Next; + while (op2b != op2 && (op2b->Pt == j->OffPt)) + op2b = op2b->Next; + bool reverse2 = (op2b->Pt.Y > j->OffPt.Y); + if (reverse1 == reverse2) + return false; + if (reverse1) { + op1b = DupOutPt(op1, false); + op2b = DupOutPt(op2, true); + op1->Prev = op2; + op2->Next = op1; + op1b->Next = op2b; + op2b->Prev = op1b; + j->OutPt1 = op1; + j->OutPt2 = op1b; + return true; + } else { + op1b = DupOutPt(op1, true); + op2b = DupOutPt(op2, false); + op1->Next = op2; + op2->Prev = op1; + op1b->Prev = op2b; + op2b->Next = op1b; + j->OutPt1 = op1; + j->OutPt2 = op1b; + return true; + } + } else if (isHorizontal) { + // treat horizontal joins differently to non-horizontal joins since with + // them we're not yet sure where the overlapping is. OutPt1.Pt & OutPt2.Pt + // may be anywhere along the horizontal edge. + op1b = op1; + while (op1->Prev->Pt.Y == op1->Pt.Y && op1->Prev != op1b && + op1->Prev != op2) + op1 = op1->Prev; + while (op1b->Next->Pt.Y == op1b->Pt.Y && op1b->Next != op1 && + op1b->Next != op2) + op1b = op1b->Next; + if (op1b->Next == op1 || op1b->Next == op2) + return false; // a flat 'polygon' + + op2b = op2; + while (op2->Prev->Pt.Y == op2->Pt.Y && op2->Prev != op2b && + op2->Prev != op1b) + op2 = op2->Prev; + while (op2b->Next->Pt.Y == op2b->Pt.Y && op2b->Next != op2 && + op2b->Next != op1) + op2b = op2b->Next; + if (op2b->Next == op2 || op2b->Next == op1) + return false; // a flat 'polygon' + + cInt Left, Right; + // Op1 --> Op1b & Op2 --> Op2b are the extremites of the horizontal edges + if (!GetOverlap(op1->Pt.X, op1b->Pt.X, op2->Pt.X, op2b->Pt.X, Left, Right)) + return false; + + // DiscardLeftSide: when overlapping edges are joined, a spike will created + // which needs to be cleaned up. However, we don't want Op1 or Op2 caught up + // on the discard Side as either may still be needed for other joins ... + IntPoint Pt; + bool DiscardLeftSide; + if (op1->Pt.X >= Left && op1->Pt.X <= Right) { + Pt = op1->Pt; + DiscardLeftSide = (op1->Pt.X > op1b->Pt.X); + } else if (op2->Pt.X >= Left && op2->Pt.X <= Right) { + Pt = op2->Pt; + DiscardLeftSide = (op2->Pt.X > op2b->Pt.X); + } else if (op1b->Pt.X >= Left && op1b->Pt.X <= Right) { + Pt = op1b->Pt; + DiscardLeftSide = op1b->Pt.X > op1->Pt.X; + } else { + Pt = op2b->Pt; + DiscardLeftSide = (op2b->Pt.X > op2->Pt.X); + } + j->OutPt1 = op1; + j->OutPt2 = op2; + return JoinHorz(op1, op1b, op2, op2b, Pt, DiscardLeftSide); + } else { + // nb: For non-horizontal joins ... + // 1. Jr.OutPt1.Pt.Y == Jr.OutPt2.Pt.Y + // 2. Jr.OutPt1.Pt > Jr.OffPt.Y + + // make sure the polygons are correctly oriented ... + op1b = op1->Next; + while ((op1b->Pt == op1->Pt) && (op1b != op1)) + op1b = op1b->Next; + bool Reverse1 = ((op1b->Pt.Y > op1->Pt.Y) || + !SlopesEqual(op1->Pt, op1b->Pt, j->OffPt, m_UseFullRange)); + if (Reverse1) { + op1b = op1->Prev; + while ((op1b->Pt == op1->Pt) && (op1b != op1)) + op1b = op1b->Prev; + if ((op1b->Pt.Y > op1->Pt.Y) || + !SlopesEqual(op1->Pt, op1b->Pt, j->OffPt, m_UseFullRange)) + return false; + }; + op2b = op2->Next; + while ((op2b->Pt == op2->Pt) && (op2b != op2)) + op2b = op2b->Next; + bool Reverse2 = ((op2b->Pt.Y > op2->Pt.Y) || + !SlopesEqual(op2->Pt, op2b->Pt, j->OffPt, m_UseFullRange)); + if (Reverse2) { + op2b = op2->Prev; + while ((op2b->Pt == op2->Pt) && (op2b != op2)) + op2b = op2b->Prev; + if ((op2b->Pt.Y > op2->Pt.Y) || + !SlopesEqual(op2->Pt, op2b->Pt, j->OffPt, m_UseFullRange)) + return false; + } + + if ((op1b == op1) || (op2b == op2) || (op1b == op2b) || + ((outRec1 == outRec2) && (Reverse1 == Reverse2))) + return false; + + if (Reverse1) { + op1b = DupOutPt(op1, false); + op2b = DupOutPt(op2, true); + op1->Prev = op2; + op2->Next = op1; + op1b->Next = op2b; + op2b->Prev = op1b; + j->OutPt1 = op1; + j->OutPt2 = op1b; + return true; + } else { + op1b = DupOutPt(op1, true); + op2b = DupOutPt(op2, false); + op1->Next = op2; + op2->Prev = op1; + op1b->Prev = op2b; + op2b->Next = op1b; + j->OutPt1 = op1; + j->OutPt2 = op1b; + return true; + } + } +} +//---------------------------------------------------------------------- + +static OutRec *ParseFirstLeft(OutRec *FirstLeft) { + while (FirstLeft && !FirstLeft->Pts) + FirstLeft = FirstLeft->FirstLeft; + return FirstLeft; +} +//------------------------------------------------------------------------------ + +void Clipper::FixupFirstLefts1(OutRec *OldOutRec, OutRec *NewOutRec) { + // tests if NewOutRec contains the polygon before reassigning FirstLeft + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) { + OutRec *outRec = m_PolyOuts[i]; + OutRec *firstLeft = ParseFirstLeft(outRec->FirstLeft); + if (outRec->Pts && firstLeft == OldOutRec) { + if (Poly2ContainsPoly1(outRec->Pts, NewOutRec->Pts)) + outRec->FirstLeft = NewOutRec; + } + } +} +//---------------------------------------------------------------------- + +void Clipper::FixupFirstLefts2(OutRec *InnerOutRec, OutRec *OuterOutRec) { + // A polygon has split into two such that one is now the inner of the other. + // It's possible that these polygons now wrap around other polygons, so check + // every polygon that's also contained by OuterOutRec's FirstLeft container + //(including 0) to see if they've become inner to the new inner polygon ... + OutRec *orfl = OuterOutRec->FirstLeft; + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) { + OutRec *outRec = m_PolyOuts[i]; + + if (!outRec->Pts || outRec == OuterOutRec || outRec == InnerOutRec) + continue; + OutRec *firstLeft = ParseFirstLeft(outRec->FirstLeft); + if (firstLeft != orfl && firstLeft != InnerOutRec && + firstLeft != OuterOutRec) + continue; + if (Poly2ContainsPoly1(outRec->Pts, InnerOutRec->Pts)) + outRec->FirstLeft = InnerOutRec; + else if (Poly2ContainsPoly1(outRec->Pts, OuterOutRec->Pts)) + outRec->FirstLeft = OuterOutRec; + else if (outRec->FirstLeft == InnerOutRec || + outRec->FirstLeft == OuterOutRec) + outRec->FirstLeft = orfl; + } +} +//---------------------------------------------------------------------- +void Clipper::FixupFirstLefts3(OutRec *OldOutRec, OutRec *NewOutRec) { + // reassigns FirstLeft WITHOUT testing if NewOutRec contains the polygon + for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) { + OutRec *outRec = m_PolyOuts[i]; + OutRec *firstLeft = ParseFirstLeft(outRec->FirstLeft); + if (outRec->Pts && firstLeft == OldOutRec) + outRec->FirstLeft = NewOutRec; + } +} +//---------------------------------------------------------------------- + +void Clipper::JoinCommonEdges() { + for (JoinList::size_type i = 0; i < m_Joins.size(); i++) { + Join *join = m_Joins[i]; + + OutRec *outRec1 = GetOutRec(join->OutPt1->Idx); + OutRec *outRec2 = GetOutRec(join->OutPt2->Idx); + + if (!outRec1->Pts || !outRec2->Pts) + continue; + if (outRec1->IsOpen || outRec2->IsOpen) + continue; + + // get the polygon fragment with the correct hole state (FirstLeft) + // before calling JoinPoints() ... + OutRec *holeStateRec; + if (outRec1 == outRec2) + holeStateRec = outRec1; + else if (OutRec1RightOfOutRec2(outRec1, outRec2)) + holeStateRec = outRec2; + else if (OutRec1RightOfOutRec2(outRec2, outRec1)) + holeStateRec = outRec1; + else + holeStateRec = GetLowermostRec(outRec1, outRec2); + + if (!JoinPoints(join, outRec1, outRec2)) + continue; + + if (outRec1 == outRec2) { + // instead of joining two polygons, we've just created a new one by + // splitting one polygon into two. + outRec1->Pts = join->OutPt1; + outRec1->BottomPt = 0; + outRec2 = CreateOutRec(); + outRec2->Pts = join->OutPt2; + + // update all OutRec2.Pts Idx's ... + UpdateOutPtIdxs(*outRec2); + + if (Poly2ContainsPoly1(outRec2->Pts, outRec1->Pts)) { + // outRec1 contains outRec2 ... + outRec2->IsHole = !outRec1->IsHole; + outRec2->FirstLeft = outRec1; + + if (m_UsingPolyTree) + FixupFirstLefts2(outRec2, outRec1); + + if ((outRec2->IsHole ^ m_ReverseOutput) == (Area(*outRec2) > 0)) + ReversePolyPtLinks(outRec2->Pts); + + } else if (Poly2ContainsPoly1(outRec1->Pts, outRec2->Pts)) { + // outRec2 contains outRec1 ... + outRec2->IsHole = outRec1->IsHole; + outRec1->IsHole = !outRec2->IsHole; + outRec2->FirstLeft = outRec1->FirstLeft; + outRec1->FirstLeft = outRec2; + + if (m_UsingPolyTree) + FixupFirstLefts2(outRec1, outRec2); + + if ((outRec1->IsHole ^ m_ReverseOutput) == (Area(*outRec1) > 0)) + ReversePolyPtLinks(outRec1->Pts); + } else { + // the 2 polygons are completely separate ... + outRec2->IsHole = outRec1->IsHole; + outRec2->FirstLeft = outRec1->FirstLeft; + + // fixup FirstLeft pointers that may need reassigning to OutRec2 + if (m_UsingPolyTree) + FixupFirstLefts1(outRec1, outRec2); + } + + } else { + // joined 2 polygons together ... + + outRec2->Pts = 0; + outRec2->BottomPt = 0; + outRec2->Idx = outRec1->Idx; + + outRec1->IsHole = holeStateRec->IsHole; + if (holeStateRec == outRec2) + outRec1->FirstLeft = outRec2->FirstLeft; + outRec2->FirstLeft = outRec1; + + if (m_UsingPolyTree) + FixupFirstLefts3(outRec2, outRec1); + } + } +} + +//------------------------------------------------------------------------------ +// ClipperOffset support functions ... +//------------------------------------------------------------------------------ + +DoublePoint GetUnitNormal(const IntPoint &pt1, const IntPoint &pt2) { + if (pt2.X == pt1.X && pt2.Y == pt1.Y) + return DoublePoint(0, 0); + + double Dx = (double)(pt2.X - pt1.X); + double dy = (double)(pt2.Y - pt1.Y); + double f = 1 * 1.0 / std::sqrt(Dx * Dx + dy * dy); + Dx *= f; + dy *= f; + return DoublePoint(dy, -Dx); +} + +//------------------------------------------------------------------------------ +// ClipperOffset class +//------------------------------------------------------------------------------ + +ClipperOffset::ClipperOffset(double miterLimit, double arcTolerance) { + this->MiterLimit = miterLimit; + this->ArcTolerance = arcTolerance; + m_lowest.X = -1; +} +//------------------------------------------------------------------------------ + +ClipperOffset::~ClipperOffset() { Clear(); } +//------------------------------------------------------------------------------ + +void ClipperOffset::Clear() { + for (int i = 0; i < m_polyNodes.ChildCount(); ++i) + delete m_polyNodes.Childs[i]; + m_polyNodes.Childs.clear(); + m_lowest.X = -1; +} +//------------------------------------------------------------------------------ + +void ClipperOffset::AddPath(const Path &path, JoinType joinType, + EndType endType) { + int highI = (int)path.size() - 1; + if (highI < 0) + return; + PolyNode *newNode = new PolyNode(); + newNode->m_jointype = joinType; + newNode->m_endtype = endType; + + // strip duplicate points from path and also get index to the lowest point ... + if (endType == etClosedLine || endType == etClosedPolygon) + while (highI > 0 && path[0] == path[highI]) + highI--; + newNode->Contour.reserve(highI + 1); + newNode->Contour.push_back(path[0]); + int j = 0, k = 0; + for (int i = 1; i <= highI; i++) + if (newNode->Contour[j] != path[i]) { + j++; + newNode->Contour.push_back(path[i]); + if (path[i].Y > newNode->Contour[k].Y || + (path[i].Y == newNode->Contour[k].Y && + path[i].X < newNode->Contour[k].X)) + k = j; + } + if (endType == etClosedPolygon && j < 2) { + delete newNode; + return; + } + m_polyNodes.AddChild(*newNode); + + // if this path's lowest pt is lower than all the others then update m_lowest + if (endType != etClosedPolygon) + return; + if (m_lowest.X < 0) + m_lowest = IntPoint(m_polyNodes.ChildCount() - 1, k); + else { + IntPoint ip = m_polyNodes.Childs[(int)m_lowest.X]->Contour[(int)m_lowest.Y]; + if (newNode->Contour[k].Y > ip.Y || + (newNode->Contour[k].Y == ip.Y && newNode->Contour[k].X < ip.X)) + m_lowest = IntPoint(m_polyNodes.ChildCount() - 1, k); + } +} +//------------------------------------------------------------------------------ + +void ClipperOffset::AddPaths(const Paths &paths, JoinType joinType, + EndType endType) { + for (Paths::size_type i = 0; i < paths.size(); ++i) + AddPath(paths[i], joinType, endType); +} +//------------------------------------------------------------------------------ + +void ClipperOffset::FixOrientations() { + // fixup orientations of all closed paths if the orientation of the + // closed path with the lowermost vertex is wrong ... + if (m_lowest.X >= 0 && + !Orientation(m_polyNodes.Childs[(int)m_lowest.X]->Contour)) { + for (int i = 0; i < m_polyNodes.ChildCount(); ++i) { + PolyNode &node = *m_polyNodes.Childs[i]; + if (node.m_endtype == etClosedPolygon || + (node.m_endtype == etClosedLine && Orientation(node.Contour))) + ReversePath(node.Contour); + } + } else { + for (int i = 0; i < m_polyNodes.ChildCount(); ++i) { + PolyNode &node = *m_polyNodes.Childs[i]; + if (node.m_endtype == etClosedLine && !Orientation(node.Contour)) + ReversePath(node.Contour); + } + } +} +//------------------------------------------------------------------------------ + +void ClipperOffset::Execute(Paths &solution, double delta) { + solution.clear(); + FixOrientations(); + DoOffset(delta); + + // now clean up 'corners' ... + Clipper clpr; + clpr.AddPaths(m_destPolys, ptSubject, true); + if (delta > 0) { + clpr.Execute(ctUnion, solution, pftPositive, pftPositive); + } else { + IntRect r = clpr.GetBounds(); + Path outer(4); + outer[0] = IntPoint(r.left - 10, r.bottom + 10); + outer[1] = IntPoint(r.right + 10, r.bottom + 10); + outer[2] = IntPoint(r.right + 10, r.top - 10); + outer[3] = IntPoint(r.left - 10, r.top - 10); + + clpr.AddPath(outer, ptSubject, true); + clpr.ReverseSolution(true); + clpr.Execute(ctUnion, solution, pftNegative, pftNegative); + if (solution.size() > 0) + solution.erase(solution.begin()); + } +} +//------------------------------------------------------------------------------ + +void ClipperOffset::Execute(PolyTree &solution, double delta) { + solution.Clear(); + FixOrientations(); + DoOffset(delta); + + // now clean up 'corners' ... + Clipper clpr; + clpr.AddPaths(m_destPolys, ptSubject, true); + if (delta > 0) { + clpr.Execute(ctUnion, solution, pftPositive, pftPositive); + } else { + IntRect r = clpr.GetBounds(); + Path outer(4); + outer[0] = IntPoint(r.left - 10, r.bottom + 10); + outer[1] = IntPoint(r.right + 10, r.bottom + 10); + outer[2] = IntPoint(r.right + 10, r.top - 10); + outer[3] = IntPoint(r.left - 10, r.top - 10); + + clpr.AddPath(outer, ptSubject, true); + clpr.ReverseSolution(true); + clpr.Execute(ctUnion, solution, pftNegative, pftNegative); + // remove the outer PolyNode rectangle ... + if (solution.ChildCount() == 1 && solution.Childs[0]->ChildCount() > 0) { + PolyNode *outerNode = solution.Childs[0]; + solution.Childs.reserve(outerNode->ChildCount()); + solution.Childs[0] = outerNode->Childs[0]; + solution.Childs[0]->Parent = outerNode->Parent; + for (int i = 1; i < outerNode->ChildCount(); ++i) + solution.AddChild(*outerNode->Childs[i]); + } else + solution.Clear(); + } +} +//------------------------------------------------------------------------------ + +void ClipperOffset::DoOffset(double delta) { + m_destPolys.clear(); + m_delta = delta; + + // if Zero offset, just copy any CLOSED polygons to m_p and return ... + if (NEAR_ZERO(delta)) { + m_destPolys.reserve(m_polyNodes.ChildCount()); + for (int i = 0; i < m_polyNodes.ChildCount(); i++) { + PolyNode &node = *m_polyNodes.Childs[i]; + if (node.m_endtype == etClosedPolygon) + m_destPolys.push_back(node.Contour); + } + return; + } + + // see offset_triginometry3.svg in the documentation folder ... + if (MiterLimit > 2) + m_miterLim = 2 / (MiterLimit * MiterLimit); + else + m_miterLim = 0.5; + + double y; + if (ArcTolerance <= 0.0) + y = def_arc_tolerance; + else if (ArcTolerance > std::fabs(delta) * def_arc_tolerance) + y = std::fabs(delta) * def_arc_tolerance; + else + y = ArcTolerance; + // see offset_triginometry2.svg in the documentation folder ... + double steps = pi / std::acos(1 - y / std::fabs(delta)); + if (steps > std::fabs(delta) * pi) + steps = std::fabs(delta) * pi; // ie excessive precision check + m_sin = std::sin(two_pi / steps); + m_cos = std::cos(two_pi / steps); + m_StepsPerRad = steps / two_pi; + if (delta < 0.0) + m_sin = -m_sin; + + m_destPolys.reserve(m_polyNodes.ChildCount() * 2); + for (int i = 0; i < m_polyNodes.ChildCount(); i++) { + PolyNode &node = *m_polyNodes.Childs[i]; + m_srcPoly = node.Contour; + + int len = (int)m_srcPoly.size(); + if (len == 0 || + (delta <= 0 && (len < 3 || node.m_endtype != etClosedPolygon))) + continue; + + m_destPoly.clear(); + if (len == 1) { + if (node.m_jointype == jtRound) { + double X = 1.0, Y = 0.0; + for (cInt j = 1; j <= steps; j++) { + m_destPoly.push_back(IntPoint(Round(m_srcPoly[0].X + X * delta), + Round(m_srcPoly[0].Y + Y * delta))); + double X2 = X; + X = X * m_cos - m_sin * Y; + Y = X2 * m_sin + Y * m_cos; + } + } else { + double X = -1.0, Y = -1.0; + for (int j = 0; j < 4; ++j) { + m_destPoly.push_back(IntPoint(Round(m_srcPoly[0].X + X * delta), + Round(m_srcPoly[0].Y + Y * delta))); + if (X < 0) + X = 1; + else if (Y < 0) + Y = 1; + else + X = -1; + } + } + m_destPolys.push_back(m_destPoly); + continue; + } + // build m_normals ... + m_normals.clear(); + m_normals.reserve(len); + for (int j = 0; j < len - 1; ++j) + m_normals.push_back(GetUnitNormal(m_srcPoly[j], m_srcPoly[j + 1])); + if (node.m_endtype == etClosedLine || node.m_endtype == etClosedPolygon) + m_normals.push_back(GetUnitNormal(m_srcPoly[len - 1], m_srcPoly[0])); + else + m_normals.push_back(DoublePoint(m_normals[len - 2])); + + if (node.m_endtype == etClosedPolygon) { + int k = len - 1; + for (int j = 0; j < len; ++j) + OffsetPoint(j, k, node.m_jointype); + m_destPolys.push_back(m_destPoly); + } else if (node.m_endtype == etClosedLine) { + int k = len - 1; + for (int j = 0; j < len; ++j) + OffsetPoint(j, k, node.m_jointype); + m_destPolys.push_back(m_destPoly); + m_destPoly.clear(); + // re-build m_normals ... + DoublePoint n = m_normals[len - 1]; + for (int j = len - 1; j > 0; j--) + m_normals[j] = DoublePoint(-m_normals[j - 1].X, -m_normals[j - 1].Y); + m_normals[0] = DoublePoint(-n.X, -n.Y); + k = 0; + for (int j = len - 1; j >= 0; j--) + OffsetPoint(j, k, node.m_jointype); + m_destPolys.push_back(m_destPoly); + } else { + int k = 0; + for (int j = 1; j < len - 1; ++j) + OffsetPoint(j, k, node.m_jointype); + + IntPoint pt1; + if (node.m_endtype == etOpenButt) { + int j = len - 1; + pt1 = IntPoint((cInt)Round(m_srcPoly[j].X + m_normals[j].X * delta), + (cInt)Round(m_srcPoly[j].Y + m_normals[j].Y * delta)); + m_destPoly.push_back(pt1); + pt1 = IntPoint((cInt)Round(m_srcPoly[j].X - m_normals[j].X * delta), + (cInt)Round(m_srcPoly[j].Y - m_normals[j].Y * delta)); + m_destPoly.push_back(pt1); + } else { + int j = len - 1; + k = len - 2; + m_sinA = 0; + m_normals[j] = DoublePoint(-m_normals[j].X, -m_normals[j].Y); + if (node.m_endtype == etOpenSquare) + DoSquare(j, k); + else + DoRound(j, k); + } + + // re-build m_normals ... + for (int j = len - 1; j > 0; j--) + m_normals[j] = DoublePoint(-m_normals[j - 1].X, -m_normals[j - 1].Y); + m_normals[0] = DoublePoint(-m_normals[1].X, -m_normals[1].Y); + + k = len - 1; + for (int j = k - 1; j > 0; --j) + OffsetPoint(j, k, node.m_jointype); + + if (node.m_endtype == etOpenButt) { + pt1 = IntPoint((cInt)Round(m_srcPoly[0].X - m_normals[0].X * delta), + (cInt)Round(m_srcPoly[0].Y - m_normals[0].Y * delta)); + m_destPoly.push_back(pt1); + pt1 = IntPoint((cInt)Round(m_srcPoly[0].X + m_normals[0].X * delta), + (cInt)Round(m_srcPoly[0].Y + m_normals[0].Y * delta)); + m_destPoly.push_back(pt1); + } else { + k = 1; + m_sinA = 0; + if (node.m_endtype == etOpenSquare) + DoSquare(0, 1); + else + DoRound(0, 1); + } + m_destPolys.push_back(m_destPoly); + } + } +} +//------------------------------------------------------------------------------ + +void ClipperOffset::OffsetPoint(int j, int &k, JoinType jointype) { + // cross product ... + m_sinA = (m_normals[k].X * m_normals[j].Y - m_normals[j].X * m_normals[k].Y); + if (std::fabs(m_sinA * m_delta) < 1.0) { + // dot product ... + double cosA = + (m_normals[k].X * m_normals[j].X + m_normals[j].Y * m_normals[k].Y); + if (cosA > 0) // angle => 0 degrees + { + m_destPoly.push_back( + IntPoint(Round(m_srcPoly[j].X + m_normals[k].X * m_delta), + Round(m_srcPoly[j].Y + m_normals[k].Y * m_delta))); + return; + } + // else angle => 180 degrees + } else if (m_sinA > 1.0) + m_sinA = 1.0; + else if (m_sinA < -1.0) + m_sinA = -1.0; + + if (m_sinA * m_delta < 0) { + m_destPoly.push_back( + IntPoint(Round(m_srcPoly[j].X + m_normals[k].X * m_delta), + Round(m_srcPoly[j].Y + m_normals[k].Y * m_delta))); + m_destPoly.push_back(m_srcPoly[j]); + m_destPoly.push_back( + IntPoint(Round(m_srcPoly[j].X + m_normals[j].X * m_delta), + Round(m_srcPoly[j].Y + m_normals[j].Y * m_delta))); + } else + switch (jointype) { + case jtMiter: { + double r = 1 + (m_normals[j].X * m_normals[k].X + + m_normals[j].Y * m_normals[k].Y); + if (r >= m_miterLim) + DoMiter(j, k, r); + else + DoSquare(j, k); + break; + } + case jtSquare: + DoSquare(j, k); + break; + case jtRound: + DoRound(j, k); + break; + } + k = j; +} +//------------------------------------------------------------------------------ + +void ClipperOffset::DoSquare(int j, int k) { + double dx = std::tan(std::atan2(m_sinA, m_normals[k].X * m_normals[j].X + + m_normals[k].Y * m_normals[j].Y) / + 4); + m_destPoly.push_back(IntPoint( + Round(m_srcPoly[j].X + m_delta * (m_normals[k].X - m_normals[k].Y * dx)), + Round(m_srcPoly[j].Y + + m_delta * (m_normals[k].Y + m_normals[k].X * dx)))); + m_destPoly.push_back(IntPoint( + Round(m_srcPoly[j].X + m_delta * (m_normals[j].X + m_normals[j].Y * dx)), + Round(m_srcPoly[j].Y + + m_delta * (m_normals[j].Y - m_normals[j].X * dx)))); +} +//------------------------------------------------------------------------------ + +void ClipperOffset::DoMiter(int j, int k, double r) { + double q = m_delta / r; + m_destPoly.push_back( + IntPoint(Round(m_srcPoly[j].X + (m_normals[k].X + m_normals[j].X) * q), + Round(m_srcPoly[j].Y + (m_normals[k].Y + m_normals[j].Y) * q))); +} +//------------------------------------------------------------------------------ + +void ClipperOffset::DoRound(int j, int k) { + double a = std::atan2(m_sinA, m_normals[k].X * m_normals[j].X + + m_normals[k].Y * m_normals[j].Y); + int steps = std::max((int)Round(m_StepsPerRad * std::fabs(a)), 1); + + double X = m_normals[k].X, Y = m_normals[k].Y, X2; + for (int i = 0; i < steps; ++i) { + m_destPoly.push_back(IntPoint(Round(m_srcPoly[j].X + X * m_delta), + Round(m_srcPoly[j].Y + Y * m_delta))); + X2 = X; + X = X * m_cos - m_sin * Y; + Y = X2 * m_sin + Y * m_cos; + } + m_destPoly.push_back( + IntPoint(Round(m_srcPoly[j].X + m_normals[j].X * m_delta), + Round(m_srcPoly[j].Y + m_normals[j].Y * m_delta))); +} + +//------------------------------------------------------------------------------ +// Miscellaneous public functions +//------------------------------------------------------------------------------ + +void Clipper::DoSimplePolygons() { + PolyOutList::size_type i = 0; + while (i < m_PolyOuts.size()) { + OutRec *outrec = m_PolyOuts[i++]; + OutPt *op = outrec->Pts; + if (!op || outrec->IsOpen) + continue; + do // for each Pt in Polygon until duplicate found do ... + { + OutPt *op2 = op->Next; + while (op2 != outrec->Pts) { + if ((op->Pt == op2->Pt) && op2->Next != op && op2->Prev != op) { + // split the polygon into two ... + OutPt *op3 = op->Prev; + OutPt *op4 = op2->Prev; + op->Prev = op4; + op4->Next = op; + op2->Prev = op3; + op3->Next = op2; + + outrec->Pts = op; + OutRec *outrec2 = CreateOutRec(); + outrec2->Pts = op2; + UpdateOutPtIdxs(*outrec2); + if (Poly2ContainsPoly1(outrec2->Pts, outrec->Pts)) { + // OutRec2 is contained by OutRec1 ... + outrec2->IsHole = !outrec->IsHole; + outrec2->FirstLeft = outrec; + if (m_UsingPolyTree) + FixupFirstLefts2(outrec2, outrec); + } else if (Poly2ContainsPoly1(outrec->Pts, outrec2->Pts)) { + // OutRec1 is contained by OutRec2 ... + outrec2->IsHole = outrec->IsHole; + outrec->IsHole = !outrec2->IsHole; + outrec2->FirstLeft = outrec->FirstLeft; + outrec->FirstLeft = outrec2; + if (m_UsingPolyTree) + FixupFirstLefts2(outrec, outrec2); + } else { + // the 2 polygons are separate ... + outrec2->IsHole = outrec->IsHole; + outrec2->FirstLeft = outrec->FirstLeft; + if (m_UsingPolyTree) + FixupFirstLefts1(outrec, outrec2); + } + op2 = op; // ie get ready for the Next iteration + } + op2 = op2->Next; + } + op = op->Next; + } while (op != outrec->Pts); + } +} +//------------------------------------------------------------------------------ + +void ReversePath(Path &p) { std::reverse(p.begin(), p.end()); } +//------------------------------------------------------------------------------ + +void ReversePaths(Paths &p) { + for (Paths::size_type i = 0; i < p.size(); ++i) + ReversePath(p[i]); +} +//------------------------------------------------------------------------------ + +void SimplifyPolygon(const Path &in_poly, Paths &out_polys, + PolyFillType fillType) { + Clipper c; + c.StrictlySimple(true); + c.AddPath(in_poly, ptSubject, true); + c.Execute(ctUnion, out_polys, fillType, fillType); +} +//------------------------------------------------------------------------------ + +void SimplifyPolygons(const Paths &in_polys, Paths &out_polys, + PolyFillType fillType) { + Clipper c; + c.StrictlySimple(true); + c.AddPaths(in_polys, ptSubject, true); + c.Execute(ctUnion, out_polys, fillType, fillType); +} +//------------------------------------------------------------------------------ + +void SimplifyPolygons(Paths &polys, PolyFillType fillType) { + SimplifyPolygons(polys, polys, fillType); +} +//------------------------------------------------------------------------------ + +inline double DistanceSqrd(const IntPoint &pt1, const IntPoint &pt2) { + double Dx = ((double)pt1.X - pt2.X); + double dy = ((double)pt1.Y - pt2.Y); + return (Dx * Dx + dy * dy); +} +//------------------------------------------------------------------------------ + +double DistanceFromLineSqrd(const IntPoint &pt, const IntPoint &ln1, + const IntPoint &ln2) { + // The equation of a line in general form (Ax + By + C = 0) + // given 2 points (x�,y�) & (x�,y�) is ... + //(y� - y�)x + (x� - x�)y + (y� - y�)x� - (x� - x�)y� = 0 + // A = (y� - y�); B = (x� - x�); C = (y� - y�)x� - (x� - x�)y� + // perpendicular distance of point (x�,y�) = (Ax� + By� + C)/Sqrt(A� + B�) + // see http://en.wikipedia.org/wiki/Perpendicular_distance + double A = double(ln1.Y - ln2.Y); + double B = double(ln2.X - ln1.X); + double C = A * ln1.X + B * ln1.Y; + C = A * pt.X + B * pt.Y - C; + return (C * C) / (A * A + B * B); +} +//--------------------------------------------------------------------------- + +bool SlopesNearCollinear(const IntPoint &pt1, const IntPoint &pt2, + const IntPoint &pt3, double distSqrd) { + // this function is more accurate when the point that's geometrically + // between the other 2 points is the one that's tested for distance. + // ie makes it more likely to pick up 'spikes' ... + if (Abs(pt1.X - pt2.X) > Abs(pt1.Y - pt2.Y)) { + if ((pt1.X > pt2.X) == (pt1.X < pt3.X)) + return DistanceFromLineSqrd(pt1, pt2, pt3) < distSqrd; + else if ((pt2.X > pt1.X) == (pt2.X < pt3.X)) + return DistanceFromLineSqrd(pt2, pt1, pt3) < distSqrd; + else + return DistanceFromLineSqrd(pt3, pt1, pt2) < distSqrd; + } else { + if ((pt1.Y > pt2.Y) == (pt1.Y < pt3.Y)) + return DistanceFromLineSqrd(pt1, pt2, pt3) < distSqrd; + else if ((pt2.Y > pt1.Y) == (pt2.Y < pt3.Y)) + return DistanceFromLineSqrd(pt2, pt1, pt3) < distSqrd; + else + return DistanceFromLineSqrd(pt3, pt1, pt2) < distSqrd; + } +} +//------------------------------------------------------------------------------ + +bool PointsAreClose(IntPoint pt1, IntPoint pt2, double distSqrd) { + double Dx = (double)pt1.X - pt2.X; + double dy = (double)pt1.Y - pt2.Y; + return ((Dx * Dx) + (dy * dy) <= distSqrd); +} +//------------------------------------------------------------------------------ + +OutPt *ExcludeOp(OutPt *op) { + OutPt *result = op->Prev; + result->Next = op->Next; + op->Next->Prev = result; + result->Idx = 0; + return result; +} +//------------------------------------------------------------------------------ + +void CleanPolygon(const Path &in_poly, Path &out_poly, double distance) { + // distance = proximity in units/pixels below which vertices + // will be stripped. Default ~= sqrt(2). + + size_t size = in_poly.size(); + + if (size == 0) { + out_poly.clear(); + return; + } + + OutPt *outPts = new OutPt[size]; + for (size_t i = 0; i < size; ++i) { + outPts[i].Pt = in_poly[i]; + outPts[i].Next = &outPts[(i + 1) % size]; + outPts[i].Next->Prev = &outPts[i]; + outPts[i].Idx = 0; + } + + double distSqrd = distance * distance; + OutPt *op = &outPts[0]; + while (op->Idx == 0 && op->Next != op->Prev) { + if (PointsAreClose(op->Pt, op->Prev->Pt, distSqrd)) { + op = ExcludeOp(op); + size--; + } else if (PointsAreClose(op->Prev->Pt, op->Next->Pt, distSqrd)) { + ExcludeOp(op->Next); + op = ExcludeOp(op); + size -= 2; + } else if (SlopesNearCollinear(op->Prev->Pt, op->Pt, op->Next->Pt, + distSqrd)) { + op = ExcludeOp(op); + size--; + } else { + op->Idx = 1; + op = op->Next; + } + } + + if (size < 3) + size = 0; + out_poly.resize(size); + for (size_t i = 0; i < size; ++i) { + out_poly[i] = op->Pt; + op = op->Next; + } + delete[] outPts; +} +//------------------------------------------------------------------------------ + +void CleanPolygon(Path &poly, double distance) { + CleanPolygon(poly, poly, distance); +} +//------------------------------------------------------------------------------ + +void CleanPolygons(const Paths &in_polys, Paths &out_polys, double distance) { + out_polys.resize(in_polys.size()); + for (Paths::size_type i = 0; i < in_polys.size(); ++i) + CleanPolygon(in_polys[i], out_polys[i], distance); +} +//------------------------------------------------------------------------------ + +void CleanPolygons(Paths &polys, double distance) { + CleanPolygons(polys, polys, distance); +} +//------------------------------------------------------------------------------ + +void Minkowski(const Path &poly, const Path &path, Paths &solution, bool isSum, + bool isClosed) { + int delta = (isClosed ? 1 : 0); + size_t polyCnt = poly.size(); + size_t pathCnt = path.size(); + Paths pp; + pp.reserve(pathCnt); + if (isSum) + for (size_t i = 0; i < pathCnt; ++i) { + Path p; + p.reserve(polyCnt); + for (size_t j = 0; j < poly.size(); ++j) + p.push_back(IntPoint(path[i].X + poly[j].X, path[i].Y + poly[j].Y)); + pp.push_back(p); + } + else + for (size_t i = 0; i < pathCnt; ++i) { + Path p; + p.reserve(polyCnt); + for (size_t j = 0; j < poly.size(); ++j) + p.push_back(IntPoint(path[i].X - poly[j].X, path[i].Y - poly[j].Y)); + pp.push_back(p); + } + + solution.clear(); + solution.reserve((pathCnt + delta) * (polyCnt + 1)); + for (size_t i = 0; i < pathCnt - 1 + delta; ++i) + for (size_t j = 0; j < polyCnt; ++j) { + Path quad; + quad.reserve(4); + quad.push_back(pp[i % pathCnt][j % polyCnt]); + quad.push_back(pp[(i + 1) % pathCnt][j % polyCnt]); + quad.push_back(pp[(i + 1) % pathCnt][(j + 1) % polyCnt]); + quad.push_back(pp[i % pathCnt][(j + 1) % polyCnt]); + if (!Orientation(quad)) + ReversePath(quad); + solution.push_back(quad); + } +} +//------------------------------------------------------------------------------ + +void MinkowskiSum(const Path &pattern, const Path &path, Paths &solution, + bool pathIsClosed) { + Minkowski(pattern, path, solution, true, pathIsClosed); + Clipper c; + c.AddPaths(solution, ptSubject, true); + c.Execute(ctUnion, solution, pftNonZero, pftNonZero); +} +//------------------------------------------------------------------------------ + +void TranslatePath(const Path &input, Path &output, const IntPoint delta) { + // precondition: input != output + output.resize(input.size()); + for (size_t i = 0; i < input.size(); ++i) + output[i] = IntPoint(input[i].X + delta.X, input[i].Y + delta.Y); +} +//------------------------------------------------------------------------------ + +void MinkowskiSum(const Path &pattern, const Paths &paths, Paths &solution, + bool pathIsClosed) { + Clipper c; + for (size_t i = 0; i < paths.size(); ++i) { + Paths tmp; + Minkowski(pattern, paths[i], tmp, true, pathIsClosed); + c.AddPaths(tmp, ptSubject, true); + if (pathIsClosed) { + Path tmp2; + TranslatePath(paths[i], tmp2, pattern[0]); + c.AddPath(tmp2, ptClip, true); + } + } + c.Execute(ctUnion, solution, pftNonZero, pftNonZero); +} +//------------------------------------------------------------------------------ + +void MinkowskiDiff(const Path &poly1, const Path &poly2, Paths &solution) { + Minkowski(poly1, poly2, solution, false, true); + Clipper c; + c.AddPaths(solution, ptSubject, true); + c.Execute(ctUnion, solution, pftNonZero, pftNonZero); +} +//------------------------------------------------------------------------------ + +enum NodeType { ntAny, ntOpen, ntClosed }; + +void AddPolyNodeToPaths(const PolyNode &polynode, NodeType nodetype, + Paths &paths) { + bool match = true; + if (nodetype == ntClosed) + match = !polynode.IsOpen(); + else if (nodetype == ntOpen) + return; + + if (!polynode.Contour.empty() && match) + paths.push_back(polynode.Contour); + for (int i = 0; i < polynode.ChildCount(); ++i) + AddPolyNodeToPaths(*polynode.Childs[i], nodetype, paths); +} +//------------------------------------------------------------------------------ + +void PolyTreeToPaths(const PolyTree &polytree, Paths &paths) { + paths.resize(0); + paths.reserve(polytree.Total()); + AddPolyNodeToPaths(polytree, ntAny, paths); +} +//------------------------------------------------------------------------------ + +void ClosedPathsFromPolyTree(const PolyTree &polytree, Paths &paths) { + paths.resize(0); + paths.reserve(polytree.Total()); + AddPolyNodeToPaths(polytree, ntClosed, paths); +} +//------------------------------------------------------------------------------ + +void OpenPathsFromPolyTree(PolyTree &polytree, Paths &paths) { + paths.resize(0); + paths.reserve(polytree.Total()); + // Open paths are top level only, so ... + for (int i = 0; i < polytree.ChildCount(); ++i) + if (polytree.Childs[i]->IsOpen()) + paths.push_back(polytree.Childs[i]->Contour); +} +//------------------------------------------------------------------------------ + +std::ostream &operator<<(std::ostream &s, const IntPoint &p) { + s << "(" << p.X << "," << p.Y << ")"; + return s; +} +//------------------------------------------------------------------------------ + +std::ostream &operator<<(std::ostream &s, const Path &p) { + if (p.empty()) + return s; + Path::size_type last = p.size() - 1; + for (Path::size_type i = 0; i < last; i++) + s << "(" << p[i].X << "," << p[i].Y << "), "; + s << "(" << p[last].X << "," << p[last].Y << ")\n"; + return s; +} +//------------------------------------------------------------------------------ + +std::ostream &operator<<(std::ostream &s, const Paths &p) { + for (Paths::size_type i = 0; i < p.size(); i++) + s << p[i]; + s << "\n"; + return s; +} +//------------------------------------------------------------------------------ + +} // ClipperLib namespace diff --git a/deploy/cpp_infer/src/main.cpp b/deploy/cpp_infer/src/main.cpp new file mode 100644 index 00000000..823f3046 --- /dev/null +++ b/deploy/cpp_infer/src/main.cpp @@ -0,0 +1,67 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "opencv2/core.hpp" +#include "opencv2/imgcodecs.hpp" +#include "opencv2/imgproc.hpp" +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +using namespace std; +using namespace cv; +using namespace PaddleOCR; + +int main(int argc, char **argv) { + if (argc < 4) { + std::cerr << "[ERROR] usage: " << argv[0] + << " det_model_file rec_model_file image_path\n"; + exit(1); + } + std::string det_model_file = argv[1]; + std::string rec_model_file = argv[2]; + std::string img_path = argv[3]; + + auto start = std::chrono::system_clock::now(); + + cv::Mat srcimg = cv::imread(img_path, cv::IMREAD_COLOR); + + DBDetector det(det_model_file); + CRNNRecognizer rec(rec_model_file); + + std::vector>> boxes; + det.Run(srcimg, boxes); + + rec.Run(boxes, srcimg); + + auto end = std::chrono::system_clock::now(); + auto duration = + std::chrono::duration_cast(end - start); + std::cout << "花费了" + << double(duration.count()) * + std::chrono::microseconds::period::num / + std::chrono::microseconds::period::den + << "秒" << std::endl; + + return 0; +} diff --git a/deploy/cpp_infer/src/ocr_det.cpp b/deploy/cpp_infer/src/ocr_det.cpp new file mode 100644 index 00000000..746c94b2 --- /dev/null +++ b/deploy/cpp_infer/src/ocr_det.cpp @@ -0,0 +1,142 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "opencv2/core.hpp" +#include "opencv2/imgcodecs.hpp" +#include "opencv2/imgproc.hpp" +#include "paddle_api.h" +#include "paddle_inference_api.h" +#include +#include +#include +#include +#include + +#include +#include +#include + +#include + +namespace PaddleOCR { + +void DBDetector::LoadModel(const std::string &model_dir, bool use_gpu, + const int gpu_id, const int min_subgraph_size, + const int batch_size) { + AnalysisConfig config; + config.SetModel(model_dir + "/model", model_dir + "/params"); + + // for cpu + config.DisableGpu(); + config.EnableMKLDNN(); // 开启MKLDNN加速 + config.SetCpuMathLibraryNumThreads(10); + + // 使用ZeroCopyTensor，此处必须设置为false + config.SwitchUseFeedFetchOps(false); + // 若输入为多个，此处必须设置为true + config.SwitchSpecifyInputNames(true); + // config.SwitchIrDebug(true); // + // 可视化调试选项，若开启，则会在每个图优化过程后生成dot文件 + // config.SwitchIrOptim(false);// 默认为true。如果设置为false，关闭所有优化 + config.EnableMemoryOptim(); // 开启内存/显存复用 + + this->predictor_ = CreatePaddlePredictor(config); + // predictor_ = std::move(CreatePaddlePredictor(config)); // PaddleDetection + // usage +} + +void DBDetector::Run(cv::Mat &img, + std::vector>> &boxes) { + float ratio_h{}; + float ratio_w{}; + + cv::Mat srcimg; + cv::Mat resize_img; + img.copyTo(srcimg); + this->resize_op_.Run(img, resize_img, this->max_side_len_, ratio_h, ratio_w); + + this->normalize_op_.Run(&resize_img, this->mean_, this->scale_, + this->is_scale_); + + float *input = new float[1 * 3 * resize_img.rows * resize_img.cols]; + this->permute_op_.Run(&resize_img, input); + + auto input_names = this->predictor_->GetInputNames(); + auto input_t = this->predictor_->GetInputTensor(input_names[0]); + input_t->Reshape({1, 3, resize_img.rows, resize_img.cols}); + input_t->copy_from_cpu(input); + + this->predictor_->ZeroCopyRun(); + + std::vector out_data; + auto output_names = this->predictor_->GetOutputNames(); + auto output_t = this->predictor_->GetOutputTensor(output_names[0]); + std::vector output_shape = output_t->shape(); + int out_num = std::accumulate(output_shape.begin(), output_shape.end(), 1, + std::multiplies()); + + out_data.resize(out_num); + output_t->copy_to_cpu(out_data.data()); + + int n2 = output_shape[2]; + int n3 = output_shape[3]; + int n = n2 * n3; + + float *pred = new float[n]; + unsigned char *cbuf = new unsigned char[n]; + + for (int i = 0; i < n; i++) { + pred[i] = float(out_data[i]); + cbuf[i] = (unsigned char)((out_data[i]) * 255); + } + + cv::Mat cbuf_map(n2, n3, CV_8UC1, (unsigned char *)cbuf); + cv::Mat pred_map(n2, n3, CV_32F, (float *)pred); + + const double threshold = 0.3 * 255; + const double maxvalue = 255; + cv::Mat bit_map; + cv::threshold(cbuf_map, bit_map, threshold, maxvalue, cv::THRESH_BINARY); + + boxes = post_processor_.boxes_from_bitmap(pred_map, bit_map); + + boxes = post_processor_.filter_tag_det_res(boxes, ratio_h, ratio_w, srcimg); + + //// visualization + cv::Point rook_points[boxes.size()][4]; + for (int n = 0; n < boxes.size(); n++) { + for (int m = 0; m < boxes[0].size(); m++) { + rook_points[n][m] = cv::Point(int(boxes[n][m][0]), int(boxes[n][m][1])); + } + } + + cv::Mat img_vis; + srcimg.copyTo(img_vis); + for (int n = 0; n < boxes.size(); n++) { + const cv::Point *ppt[1] = {rook_points[n]}; + int npt[] = {4}; + cv::polylines(img_vis, ppt, npt, 1, 1, CV_RGB(0, 255, 0), 2, 8, 0); + } + + imwrite("./det_res.png", img_vis); + + std::cout << "The detection visualized image saved in ./det_res.png" + << std::endl; + + delete[] input; + delete[] pred; + delete[] cbuf; +} + +} // namespace PaddleOCR \ No newline at end of file diff --git a/deploy/cpp_infer/src/ocr_rec.cpp b/deploy/cpp_infer/src/ocr_rec.cpp new file mode 100644 index 00000000..b50020e7 --- /dev/null +++ b/deploy/cpp_infer/src/ocr_rec.cpp @@ -0,0 +1,218 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "opencv2/core.hpp" +#include "opencv2/imgcodecs.hpp" +#include "opencv2/imgproc.hpp" +#include "paddle_api.h" +#include "paddle_inference_api.h" +#include +#include +#include +#include +#include + +#include +#include +#include + +#include + +namespace PaddleOCR { + +void CRNNRecognizer::Run(std::vector>> boxes, + cv::Mat &img) { + cv::Mat srcimg; + img.copyTo(srcimg); + cv::Mat crop_img; + cv::Mat resize_img; + + std::cout << "The predicted text is :" << std::endl; + int index = 0; + for (int i = boxes.size() - 1; i >= 0; i--) { + crop_img = get_rotate_crop_image(srcimg, boxes[i]); + + float wh_ratio = float(crop_img.cols) / float(crop_img.rows); + + this->resize_op_.Run(crop_img, resize_img, wh_ratio); + + this->normalize_op_.Run(&resize_img, this->mean_, this->scale_, + this->is_scale_); + + float *input = new float[1 * 3 * resize_img.rows * resize_img.cols]; + + this->permute_op_.Run(&resize_img, input); + + auto input_names = this->predictor_->GetInputNames(); + auto input_t = this->predictor_->GetInputTensor(input_names[0]); + input_t->Reshape({1, 3, resize_img.rows, resize_img.cols}); + input_t->copy_from_cpu(input); + + this->predictor_->ZeroCopyRun(); + + std::vector rec_idx; + auto output_names = this->predictor_->GetOutputNames(); + auto output_t = this->predictor_->GetOutputTensor(output_names[0]); + auto rec_idx_lod = output_t->lod(); + auto shape_out = output_t->shape(); + int out_num = std::accumulate(shape_out.begin(), shape_out.end(), 1, + std::multiplies()); + + rec_idx.resize(out_num); + output_t->copy_to_cpu(rec_idx.data()); + + std::vector pred_idx; + for (int n = int(rec_idx_lod[0][0]); n < int(rec_idx_lod[0][1]); n++) { + pred_idx.push_back(int(rec_idx[n])); + } + + if (pred_idx.size() < 1e-3) + continue; + + index += 1; + std::cout << index << "\t"; + for (int n = 0; n < pred_idx.size(); n++) { + std::cout << label_list_[pred_idx[n]]; + } + + std::vector predict_batch; + auto output_t_1 = this->predictor_->GetOutputTensor(output_names[1]); + + auto predict_lod = output_t_1->lod(); + auto predict_shape = output_t_1->shape(); + int out_num_1 = std::accumulate(predict_shape.begin(), predict_shape.end(), + 1, std::multiplies()); + + predict_batch.resize(out_num_1); + output_t_1->copy_to_cpu(predict_batch.data()); + + int argmax_idx; + int blank = predict_shape[1]; + float score = 0.f; + int count = 0; + float max_value = 0.0f; + + for (int n = predict_lod[0][0]; n < predict_lod[0][1] - 1; n++) { + argmax_idx = int(argmax(&predict_batch[n * predict_shape[1]], + &predict_batch[(n + 1) * predict_shape[1]])); + max_value = + float(*std::max_element(&predict_batch[n * predict_shape[1]], + &predict_batch[(n + 1) * predict_shape[1]])); + if (blank - 1 - argmax_idx > 1e-5) { + score += max_value; + count += 1; + } + } + score /= count; + std::cout << "\tscore: " << score << std::endl; + + delete[] input; + } +} + +void CRNNRecognizer::LoadModel(const std::string &model_dir, bool use_gpu, + const int gpu_id, const int min_subgraph_size, + const int batch_size) { + AnalysisConfig config; + config.SetModel(model_dir + "/model", model_dir + "/params"); + + // for cpu + config.DisableGpu(); + config.EnableMKLDNN(); // 开启MKLDNN加速 + config.SetCpuMathLibraryNumThreads(10); + + // 使用ZeroCopyTensor，此处必须设置为false + config.SwitchUseFeedFetchOps(false); + // 若输入为多个，此处必须设置为true + config.SwitchSpecifyInputNames(true); + // config.SwitchIrDebug(true); // + // 可视化调试选项，若开启，则会在每个图优化过程后生成dot文件 + // config.SwitchIrOptim(false);// 默认为true。如果设置为false，关闭所有优化 + config.EnableMemoryOptim(); // 开启内存/显存复用 + + this->predictor_ = CreatePaddlePredictor(config); +} + +cv::Mat +CRNNRecognizer::get_rotate_crop_image(const cv::Mat &srcimage, + std::vector> box) { + cv::Mat image; + srcimage.copyTo(image); + std::vector> points = box; + + int x_collect[4] = {box[0][0], box[1][0], box[2][0], box[3][0]}; + int y_collect[4] = {box[0][1], box[1][1], box[2][1], box[3][1]}; + int left = int(*std::min_element(x_collect, x_collect + 4)); + int right = int(*std::max_element(x_collect, x_collect + 4)); + int top = int(*std::min_element(y_collect, y_collect + 4)); + int bottom = int(*std::max_element(y_collect, y_collect + 4)); + + cv::Mat img_crop; + image(cv::Rect(left, top, right - left, bottom - top)).copyTo(img_crop); + + for (int i = 0; i < points.size(); i++) { + points[i][0] -= left; + points[i][1] -= top; + } + + int img_crop_width = int(sqrt(pow(points[0][0] - points[1][0], 2) + + pow(points[0][1] - points[1][1], 2))); + int img_crop_height = int(sqrt(pow(points[0][0] - points[3][0], 2) + + pow(points[0][1] - points[3][1], 2))); + + cv::Point2f pts_std[4]; + pts_std[0] = cv::Point2f(0., 0.); + pts_std[1] = cv::Point2f(img_crop_width, 0.); + pts_std[2] = cv::Point2f(img_crop_width, img_crop_height); + pts_std[3] = cv::Point2f(0.f, img_crop_height); + + cv::Point2f pointsf[4]; + pointsf[0] = cv::Point2f(points[0][0], points[0][1]); + pointsf[1] = cv::Point2f(points[1][0], points[1][1]); + pointsf[2] = cv::Point2f(points[2][0], points[2][1]); + pointsf[3] = cv::Point2f(points[3][0], points[3][1]); + + cv::Mat M = cv::getPerspectiveTransform(pointsf, pts_std); + + cv::Mat dst_img; + cv::warpPerspective(img_crop, dst_img, M, + cv::Size(img_crop_width, img_crop_height), + cv::BORDER_REPLICATE); + + if (float(dst_img.rows) >= float(dst_img.cols) * 1.5) { + cv::Mat srcCopy = cv::Mat(dst_img.rows, dst_img.cols, dst_img.depth()); + cv::transpose(dst_img, srcCopy); + cv::flip(srcCopy, srcCopy, 0); + return srcCopy; + } else { + return dst_img; + } +} + +std::vector CRNNRecognizer::ReadDict(const std::string &path) { + std::ifstream in(path); + std::string filename; + std::string line; + std::vector m_vec; + if (in) { + while (getline(in, line)) { + m_vec.push_back(line); + } + } else { + std::cout << "no such file" << std::endl; + } + return m_vec; +} + +} // namespace PaddleOCR \ No newline at end of file diff --git a/deploy/cpp_infer/src/postprocess_op.cpp b/deploy/cpp_infer/src/postprocess_op.cpp new file mode 100644 index 00000000..69036db1 --- /dev/null +++ b/deploy/cpp_infer/src/postprocess_op.cpp @@ -0,0 +1,307 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include + +namespace PaddleOCR { + +void PostProcessor::GetContourArea(float **box, float unclip_ratio, + float &distance) { + int pts_num = 4; + float area = 0.0f; + float dist = 0.0f; + for (int i = 0; i < pts_num; i++) { + area += box[i][0] * box[(i + 1) % pts_num][1] - + box[i][1] * box[(i + 1) % pts_num][0]; + dist += sqrtf((box[i][0] - box[(i + 1) % pts_num][0]) * + (box[i][0] - box[(i + 1) % pts_num][0]) + + (box[i][1] - box[(i + 1) % pts_num][1]) * + (box[i][1] - box[(i + 1) % pts_num][1])); + } + area = fabs(float(area / 2.0)); + + distance = area * unclip_ratio / dist; +} + +cv::RotatedRect PostProcessor::unclip(float **box) { + float unclip_ratio = 2.0; + float distance = 1.0; + + GetContourArea(box, unclip_ratio, distance); + + ClipperLib::ClipperOffset offset; + ClipperLib::Path p; + p << ClipperLib::IntPoint(int(box[0][0]), int(box[0][1])) + << ClipperLib::IntPoint(int(box[1][0]), int(box[1][1])) + << ClipperLib::IntPoint(int(box[2][0]), int(box[2][1])) + << ClipperLib::IntPoint(int(box[3][0]), int(box[3][1])); + offset.AddPath(p, ClipperLib::jtRound, ClipperLib::etClosedPolygon); + + ClipperLib::Paths soln; + offset.Execute(soln, distance); + std::vector points; + + for (int j = 0; j < soln.size(); j++) { + for (int i = 0; i < soln[soln.size() - 1].size(); i++) { + points.emplace_back(soln[j][i].X, soln[j][i].Y); + } + } + cv::RotatedRect res = cv::minAreaRect(points); + + return res; +} + +float **PostProcessor::Mat2Vec(cv::Mat mat) { + auto **array = new float *[mat.rows]; + for (int i = 0; i < mat.rows; ++i) + array[i] = new float[mat.cols]; + for (int i = 0; i < mat.rows; ++i) { + for (int j = 0; j < mat.cols; ++j) { + array[i][j] = mat.at(i, j); + } + } + + return array; +} + +void PostProcessor::quickSort(float **s, int l, int r) { + if (l < r) { + int i = l, j = r; + float x = s[l][0]; + float *xp = s[l]; + while (i < j) { + while (i < j && s[j][0] >= x) + j--; + if (i < j) + std::swap(s[i++], s[j]); + while (i < j && s[i][0] < x) + i++; + if (i < j) + std::swap(s[j--], s[i]); + } + s[i] = xp; + quickSort(s, l, i - 1); + quickSort(s, i + 1, r); + } +} + +void PostProcessor::quickSort_vector(std::vector> &box, int l, + int r, int axis) { + if (l < r) { + int i = l, j = r; + int x = box[l][axis]; + std::vector xp(box[l]); + while (i < j) { + while (i < j && box[j][axis] >= x) + j--; + if (i < j) + std::swap(box[i++], box[j]); + while (i < j && box[i][axis] < x) + i++; + if (i < j) + std::swap(box[j--], box[i]); + } + box[i] = xp; + quickSort_vector(box, l, i - 1, axis); + quickSort_vector(box, i + 1, r, axis); + } +} + +std::vector> +PostProcessor::order_points_clockwise(std::vector> pts) { + std::vector> box = pts; + quickSort_vector(box, 0, int(box.size() - 1), 0); + std::vector> leftmost = {box[0], box[1]}; + std::vector> rightmost = {box[2], box[3]}; + + if (leftmost[0][1] > leftmost[1][1]) + std::swap(leftmost[0], leftmost[1]); + + if (rightmost[0][1] > rightmost[1][1]) + std::swap(rightmost[0], rightmost[1]); + + std::vector> rect = {leftmost[0], rightmost[0], rightmost[1], + leftmost[1]}; + return rect; +} + +float **PostProcessor::get_mini_boxes(cv::RotatedRect box, float &ssid) { + ssid = box.size.width >= box.size.height ? box.size.height : box.size.width; + + cv::Mat points; + cv::boxPoints(box, points); + // sorted box points + auto array = Mat2Vec(points); + quickSort(array, 0, 3); + + float *idx1 = array[0], *idx2 = array[1], *idx3 = array[2], *idx4 = array[3]; + if (array[3][1] <= array[2][1]) { + idx2 = array[3]; + idx3 = array[2]; + } else { + idx2 = array[2]; + idx3 = array[3]; + } + if (array[1][1] <= array[0][1]) { + idx1 = array[1]; + idx4 = array[0]; + } else { + idx1 = array[0]; + idx4 = array[1]; + } + + array[0] = idx1; + array[1] = idx2; + array[2] = idx3; + array[3] = idx4; + + return array; +} + +float PostProcessor::box_score_fast(float **box_array, cv::Mat pred) { + auto array = box_array; + int width = pred.cols; + int height = pred.rows; + + float box_x[4] = {array[0][0], array[1][0], array[2][0], array[3][0]}; + float box_y[4] = {array[0][1], array[1][1], array[2][1], array[3][1]}; + + int xmin = clamp(int(std::floor(*(std::min_element(box_x, box_x + 4)))), 0, + width - 1); + int xmax = clamp(int(std::ceil(*(std::max_element(box_x, box_x + 4)))), 0, + width - 1); + int ymin = clamp(int(std::floor(*(std::min_element(box_y, box_y + 4)))), 0, + height - 1); + int ymax = clamp(int(std::ceil(*(std::max_element(box_y, box_y + 4)))), 0, + height - 1); + + cv::Mat mask; + mask = cv::Mat::zeros(ymax - ymin + 1, xmax - xmin + 1, CV_8UC1); + + cv::Point root_point[4]; + root_point[0] = cv::Point(int(array[0][0]) - xmin, int(array[0][1]) - ymin); + root_point[1] = cv::Point(int(array[1][0]) - xmin, int(array[1][1]) - ymin); + root_point[2] = cv::Point(int(array[2][0]) - xmin, int(array[2][1]) - ymin); + root_point[3] = cv::Point(int(array[3][0]) - xmin, int(array[3][1]) - ymin); + const cv::Point *ppt[1] = {root_point}; + int npt[] = {4}; + cv::fillPoly(mask, ppt, npt, 1, cv::Scalar(1)); + + cv::Mat croppedImg; + pred(cv::Rect(xmin, ymin, xmax - xmin + 1, ymax - ymin + 1)) + .copyTo(croppedImg); + + auto score = cv::mean(croppedImg, mask)[0]; + return score; +} + +std::vector>> +PostProcessor::boxes_from_bitmap(const cv::Mat pred, const cv::Mat bitmap) { + const int min_size = 3; + const int max_candidates = 1000; + const float box_thresh = 0.5; + + int width = bitmap.cols; + int height = bitmap.rows; + + std::vector> contours; + std::vector hierarchy; + + cv::findContours(bitmap, contours, hierarchy, cv::RETR_LIST, + cv::CHAIN_APPROX_SIMPLE); + + int num_contours = + contours.size() >= max_candidates ? max_candidates : contours.size(); + + std::vector>> boxes; + + for (int _i = 0; _i < num_contours; _i++) { + float ssid; + cv::RotatedRect box = cv::minAreaRect(contours[_i]); + auto array = get_mini_boxes(box, ssid); + + auto box_for_unclip = array; + // end get_mini_box + + if (ssid < min_size) { + continue; + } + + float score; + score = box_score_fast(array, pred); + // end box_score_fast + if (score < box_thresh) + continue; + + // start for unclip + cv::RotatedRect points = unclip(box_for_unclip); + // end for unclip + + cv::RotatedRect clipbox = points; + auto cliparray = get_mini_boxes(clipbox, ssid); + + if (ssid < min_size + 2) + continue; + + int dest_width = pred.cols; + int dest_height = pred.rows; + std::vector> intcliparray; + + for (int num_pt = 0; num_pt < 4; num_pt++) { + std::vector a{int(clampf(roundf(cliparray[num_pt][0] / float(width) * + float(dest_width)), + 0, float(dest_width))), + int(clampf(roundf(cliparray[num_pt][1] / + float(height) * float(dest_height)), + 0, float(dest_height)))}; + intcliparray.push_back(a); + } + boxes.push_back(intcliparray); + + } // end for + return boxes; +} + +std::vector>> PostProcessor::filter_tag_det_res( + std::vector>> boxes, float ratio_h, + float ratio_w, cv::Mat srcimg) { + int oriimg_h = srcimg.rows; + int oriimg_w = srcimg.cols; + + std::vector>> root_points; + for (int n = 0; n < boxes.size(); n++) { + boxes[n] = order_points_clockwise(boxes[n]); + for (int m = 0; m < boxes[0].size(); m++) { + boxes[n][m][0] /= ratio_w; + boxes[n][m][1] /= ratio_h; + + boxes[n][m][0] = int(_min(_max(boxes[n][m][0], 0), oriimg_w - 1)); + boxes[n][m][1] = int(_min(_max(boxes[n][m][1], 0), oriimg_h - 1)); + } + } + + for (int n = 0; n < boxes.size(); n++) { + int rect_width, rect_height; + rect_width = int(sqrt(pow(boxes[n][0][0] - boxes[n][1][0], 2) + + pow(boxes[n][0][1] - boxes[n][1][1], 2))); + rect_height = int(sqrt(pow(boxes[n][0][0] - boxes[n][3][0], 2) + + pow(boxes[n][0][1] - boxes[n][3][1], 2))); + if (rect_width <= 10 || rect_height <= 10) + continue; + root_points.push_back(boxes[n]); + } + return root_points; +} + +} // namespace PaddleOCR diff --git a/deploy/cpp_infer/src/preprocess_op.cpp b/deploy/cpp_infer/src/preprocess_op.cpp new file mode 100644 index 00000000..5fee3c4d --- /dev/null +++ b/deploy/cpp_infer/src/preprocess_op.cpp @@ -0,0 +1,119 @@ +// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "opencv2/core.hpp" +#include "opencv2/imgcodecs.hpp" +#include "opencv2/imgproc.hpp" +#include "paddle_api.h" +#include "paddle_inference_api.h" +#include +#include +#include +#include +#include + +#include +#include +#include + +#include + +namespace PaddleOCR { + +void Permute::Run(const cv::Mat *im, float *data) { + int rh = im->rows; + int rw = im->cols; + int rc = im->channels(); + for (int i = 0; i < rc; ++i) { + cv::extractChannel(*im, cv::Mat(rh, rw, CV_32FC1, data + i * rh * rw), i); + } +} + +void Normalize::Run(cv::Mat *im, const std::vector &mean, + const std::vector &scale, const bool is_scale) { + double e = 1.0; + if (is_scale) { + e /= 255.0; + } + (*im).convertTo(*im, CV_32FC3, e); + for (int h = 0; h < im->rows; h++) { + for (int w = 0; w < im->cols; w++) { + im->at(h, w)[0] = + (im->at(h, w)[0] - mean[0]) * scale[0]; + im->at(h, w)[1] = + (im->at(h, w)[1] - mean[1]) * scale[1]; + im->at(h, w)[2] = + (im->at(h, w)[2] - mean[2]) * scale[2]; + } + } +} + +void ResizeImgType0::Run(const cv::Mat &img, cv::Mat &resize_img, + int max_size_len, float &ratio_h, float &ratio_w) { + int w = img.cols; + int h = img.rows; + + float ratio = 1.f; + int max_wh = w >= h ? w : h; + if (max_wh > max_size_len) { + if (h > w) { + ratio = float(max_size_len) / float(h); + } else { + ratio = float(max_size_len) / float(w); + } + } + + int resize_h = int(float(h) * ratio); + int resize_w = int(float(w) * ratio); + if (resize_h % 32 == 0) + resize_h = resize_h; + else if (resize_h / 32 < 1 + 1e-5) + resize_h = 32; + else + resize_h = (resize_h / 32 - 1) * 32; + + if (resize_w % 32 == 0) + resize_w = resize_w; + else if (resize_w / 32 < 1) + resize_w = 32; + else + resize_w = (resize_w / 32 - 1) * 32; + + cv::resize(img, resize_img, cv::Size(resize_w, resize_h)); + + ratio_h = float(resize_h) / float(h); + ratio_w = float(resize_w) / float(w); +} + +void CrnnResizeImg::Run(const cv::Mat &img, cv::Mat &resize_img, float wh_ratio, + const std::vector rec_image_shape) { + int imgC, imgH, imgW; + imgC = rec_image_shape[0]; + imgH = rec_image_shape[1]; + imgW = rec_image_shape[2]; + + imgW = int(32 * wh_ratio); + + float ratio = float(img.cols) / float(img.rows); + int resize_w, resize_h; + if (ceilf(imgH * ratio) > imgW) + resize_w = imgW; + else + resize_w = int(ceilf(imgH * ratio)); + + cv::resize(img, resize_img, cv::Size(resize_w, imgH), 0.f, 0.f, + cv::INTER_LINEAR); +} + +} // namespace PaddleOCR \ No newline at end of file diff --git a/deploy/cpp_infer/tools/build.sh b/deploy/cpp_infer/tools/build.sh new file mode 100755 index 00000000..a3a709ca --- /dev/null +++ b/deploy/cpp_infer/tools/build.sh @@ -0,0 +1,24 @@ + +LIB_DIR=/paddle/code/gry/Paddle/build/fluid_inference_install_dir/ +CUDA_LIB_DIR=/usr/local/cuda/lib64 +CUDNN_LIB_DIR=/usr/lib/x86_64-linux-gnu/ +TENSORRT_ROOT_DIR=YOUR_TENSORRT_ROOT_DIR + +BUILD_DIR=build +rm -rf ${BUILD_DIR} +mkdir ${BUILD_DIR} +cd ${BUILD_DIR} +cmake .. \ + -DPADDLE_LIB=${LIB_DIR} \ + -DWITH_MKL=ON \ + -DDEMO_NAME=ocr_system \ + -DWITH_GPU=OFF \ + -DWITH_STATIC_LIB=OFF \ + -DUSE_TENSORRT=OFF \ + -DCUDNN_LIB=${CUDNN_LIB_DIR} \ + -DCUDA_LIB=${CUDA_LIB_DIR} \ + -DTENSORRT_ROOT=YOUR_TENSORRT_ROOT_DIR + +make -j + + diff --git a/deploy/cpp_infer/tools/ppocr_keys_v1.txt b/deploy/cpp_infer/tools/ppocr_keys_v1.txt new file mode 100644 index 00000000..84b885d8 --- /dev/null +++ b/deploy/cpp_infer/tools/ppocr_keys_v1.txt @@ -0,0 +1,6623 @@ +' +疗 +绚 +诚 +娇 +溜 +题 +贿 +者 +廖 +更 +纳 +加 +奉 +公 +一 +就 +汴 +计 +与 +路 +房 +原 +妇 +2 +0 +8 +- +7 +其 +> +: +] +, +， +骑 +刈 +全 +消 +昏 +傈 +安 +久 +钟 +嗅 +不 +影 +处 +驽 +蜿 +资 +关 +椤 +地 +瘸 +专 +问 +忖 +票 +嫉 +炎 +韵 +要 +月 +田 +节 +陂 +鄙 +捌 +备 +拳 +伺 +眼 +网 +盎 +大 +傍 +心 +东 +愉 +汇 +蹿 +科 +每 +业 +里 +航 +晏 +字 +平 +录 +先 +1 +3 +彤 +鲶 +产 +稍 +督 +腴 +有 +象 +岳 +注 +绍 +在 +泺 +文 +定 +核 +名 +水 +过 +理 +让 +偷 +率 +等 +这 +发 +” +为 +含 +肥 +酉 +相 +鄱 +七 +编 +猥 +锛 +日 +镀 +蒂 +掰 +倒 +辆 +栾 +栗 +综 +涩 +州 +雌 +滑 +馀 +了 +机 +块 +司 +宰 +甙 +兴 +矽 +抚 +保 +用 +沧 +秩 +如 +收 +息 +滥 +页 +疑 +埠 +! +！ +姥 +异 +橹 +钇 +向 +下 +跄 +的 +椴 +沫 +国 +绥 +獠 +报 +开 +民 +蜇 +何 +分 +凇 +长 +讥 +藏 +掏 +施 +羽 +中 +讲 +派 +嘟 +人 +提 +浼 +间 +世 +而 +古 +多 +倪 +唇 +饯 +控 +庚 +首 +赛 +蜓 +味 +断 +制 +觉 +技 +替 +艰 +溢 +潮 +夕 +钺 +外 +摘 +枋 +动 +双 +单 +啮 +户 +枇 +确 +锦 +曜 +杜 +或 +能 +效 +霜 +盒 +然 +侗 +电 +晁 +放 +步 +鹃 +新 +杖 +蜂 +吒 +濂 +瞬 +评 +总 +隍 +对 +独 +合 +也 +是 +府 +青 +天 +诲 +墙 +组 +滴 +级 +邀 +帘 +示 +已 +时 +骸 +仄 +泅 +和 +遨 +店 +雇 +疫 +持 +巍 +踮 +境 +只 +亨 +目 +鉴 +崤 +闲 +体 +泄 +杂 +作 +般 +轰 +化 +解 +迂 +诿 +蛭 +璀 +腾 +告 +版 +服 +省 +师 +小 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a/deploy/cpp_infer/tools/run.sh b/deploy/cpp_infer/tools/run.sh new file mode 100755 index 00000000..1989d5ea --- /dev/null +++ b/deploy/cpp_infer/tools/run.sh @@ -0,0 +1,2 @@ + +./build/ocr_system ./inference/det_db/ ./inference/rec_crnn/ ../../doc/imgs/11.jpg