Shihui (#1019)

* feat: planeGeometry 支持地形（地形贴图偏移）

* style: lint style

* feat: 增加 terrain clip

* style: lint sytle

* style: lint style

packages/layers/src/Geometry/models/plane.ts

@@ -5,6 +5,7 @@ import {
   IModelUniform,
   ITexture2D,
 } from '@antv/l7-core';
+import { Version } from '@antv/l7-maps';
 import { getMask, isMini } from '@antv/l7-utils';
 // import { mat4, vec3 } from 'gl-matrix';
 import BaseModel from '../../core/BaseModel';
@@ -12,7 +13,13 @@ import { IGeometryLayerStyleOptions } from '../../core/interface';
 import planeFrag from '../shaders/plane_frag.glsl';
 import planeVert from '../shaders/plane_vert.glsl';
 
-function initPlane(
+export default class PlaneModel extends BaseModel {
+  protected texture: ITexture2D;
+  protected mapTexture: string | undefined;
+  protected positions: number[];
+  protected indices: number[];
+
+  public initPlane(
     width = 1,
     height = 1,
     widthSegments = 1,
@@ -41,8 +48,16 @@ function initPlane(
 
       for (let ix = 0; ix < gridX1; ix++) {
         const x = ix * segmentWidth - widthHalf;
-
+        if (this.mapService.version === Version['GAODE2.x']) {
+          // @ts-ignore
+          const [a, b] = this.mapService.lngLatToCoord([x + lng, -y + lat]) as [
+            number,
+            number,
+          ];
+          positions.push(a, b, 0);
+        } else {
           positions.push(x + lng, -y + lat, 0);
+        }
 
         positions.push(ix / gridX);
         positions.push(1 - iy / gridY);
@@ -64,9 +79,6 @@ function initPlane(
     return { indices, positions };
   }
 
-export default class PlaneModel extends BaseModel {
-  protected texture: ITexture2D;
-  protected mapTexture: string | undefined;
   public planeGeometryTriangulation = () => {
     const {
       width = 1,
@@ -74,25 +86,44 @@ export default class PlaneModel extends BaseModel {
       widthSegments = 1,
       heightSegments = 1,
       center = [120, 30],
+      terrainTexture,
     } = this.layer.getLayerConfig() as IGeometryLayerStyleOptions;
-    const { indices, positions } = initPlane(
+
+    const { indices, positions } = this.initPlane(
       width,
       height,
       widthSegments,
       heightSegments,
       ...center,
     );
+    this.positions = positions;
+    this.indices = indices;
+
+    if (terrainTexture) {
+      // 存在地形贴图的时候会根据地形贴图对顶点进行偏移
+      this.loadTerrainTexture();
+    }
+
     return {
       vertices: positions,
       indices,
       size: 5,
     };
   };
+  public planeGeometryUpdateTriangulation = () => {
+    return {
+      vertices: this.positions,
+      indices: this.indices,
+      size: 5,
+    };
+  };
 
   public getUninforms(): IModelUniform {
     const {
       opacity,
       mapTexture,
+      terrainClipHeight = 0,
+      terrainTexture,
     } = this.layer.getLayerConfig() as IGeometryLayerStyleOptions;
     if (this.mapTexture !== mapTexture) {
       this.mapTexture = mapTexture;
@@ -102,7 +133,7 @@ export default class PlaneModel extends BaseModel {
     return {
       u_opacity: opacity || 1,
       u_mapFlag: mapTexture ? 1 : 0,
-
+      u_terrainClipHeight: terrainTexture ? terrainClipHeight : -1,
       u_texture: this.texture,
       // u_ModelMatrix: mat4.translate(mat4.create(), mat4.create(), [1, 0, 0])
       // u_ModelMatrix: mat4.rotateZ(mat4.create(), mat4.create(), 10)
@@ -111,17 +142,6 @@ export default class PlaneModel extends BaseModel {
     };
   }
 
-  // public rotateZ(): mat4 {
-  //   const res = mat4.create()
-  //   const roZero = mat4.translate(mat4.create(), mat4.create(), [-120, 0, -30])
-  //   const rotate = mat4.rotateZ(mat4.create(), mat4.create(), 10)
-  //   const roOrigin = mat4.translate(mat4.create(), mat4.create(), [120, 0, 30])
-  //   mat4.multiply(res, res, roZero)
-  //   mat4.multiply(res, res, rotate)
-  //   mat4.multiply(res, res, roOrigin)
-  //   return res
-  // }
-
   public clearModels(): void {
     this.texture.destroy();
   }
@@ -149,13 +169,89 @@ export default class PlaneModel extends BaseModel {
         fragmentShader: planeFrag,
         triangulation: this.planeGeometryTriangulation,
         primitive: gl.TRIANGLES,
-        // primitive: gl.POINTS,
-        depth: { enable: false },
+        depth: { enable: true },
         blend: this.getBlend(),
         stencil: getMask(mask, maskInside),
       }),
     ];
   }
+
+  public getImageData(img: HTMLImageElement) {
+    const canvas: HTMLCanvasElement = document.createElement('canvas');
+    const ctx = canvas.getContext('2d') as CanvasRenderingContext2D;
+    const { width, height } = img;
+    canvas.width = width;
+    canvas.height = height;
+
+    ctx.drawImage(img, 0, 0, width, height);
+    const imageData = ctx.getImageData(0, 0, width, height);
+
+    return imageData;
+  }
+
+  /**
+   * load terrain texture & offset attribute z
+   */
+  public loadTerrainTexture(): void {
+    const {
+      mask = false,
+      maskInside = true,
+      widthSegments = 1,
+      heightSegments = 1,
+      terrainTexture,
+      rgb2height = (r: number, g: number, b: number) => r + g + b,
+    } = this.layer.getLayerConfig() as IGeometryLayerStyleOptions;
+    const terrainImage = new Image();
+    terrainImage.crossOrigin = 'anonymous';
+    terrainImage.onload = () => {
+      const imgWidth = terrainImage.width;
+      const imgHeight = terrainImage.height;
+
+      const imageData = this.getImageData(terrainImage).data;
+
+      const gridX = Math.floor(widthSegments);
+      const gridY = Math.floor(heightSegments);
+
+      const gridX1 = gridX + 1;
+      const gridY1 = gridY + 1;
+
+      const widthStep = imgWidth / gridX;
+      const heihgtStep = imgHeight / gridY;
+
+      for (let iy = 0; iy < gridY1; iy++) {
+        const imgIndexY = Math.floor(iy * heihgtStep);
+        const imgLen = imgIndexY * imgWidth;
+
+        for (let ix = 0; ix < gridX1; ix++) {
+          const imgIndexX = Math.floor(ix * widthStep);
+          const imgDataIndex = (imgLen + imgIndexX) * 4;
+
+          const r = imageData[imgDataIndex];
+          const g = imageData[imgDataIndex + 1];
+          const b = imageData[imgDataIndex + 2];
+
+          const z = (iy * gridX1 + ix) * 5 + 2;
+          this.positions[z] = rgb2height(r, g, b);
+        }
+      }
+
+      this.layer.models = [
+        this.layer.buildLayerModel({
+          moduleName: 'geometry_plane',
+          vertexShader: planeVert,
+          fragmentShader: planeFrag,
+          triangulation: this.planeGeometryUpdateTriangulation,
+          primitive: gl.TRIANGLES,
+          depth: { enable: true },
+          blend: this.getBlend(),
+          stencil: getMask(mask, maskInside),
+        }),
+      ];
+      this.layerService.renderLayers();
+    };
+    terrainImage.src = terrainTexture as string;
+  }
+
   public buildModels() {
     return this.initModels();
   }

packages/layers/src/Geometry/shaders/plane_frag.glsl

@@ -5,6 +5,7 @@ uniform float u_opacity;
 
 varying vec3 v_Color;
 varying vec2 v_uv;
+varying float v_clip;
 
 #pragma include "picking"
 void main() {
@@ -12,10 +13,10 @@ void main() {
   if(u_mapFlag > 0.0) {
     gl_FragColor = texture2D(u_texture, vec2(v_uv.x, 1.0 - v_uv.y));
     gl_FragColor.a *= u_opacity;
-
   } else {
     // gl_FragColor = vec4(v_uv, 0.0, u_opacity);
     gl_FragColor = vec4(v_Color, u_opacity);
   }
+  gl_FragColor.a *= v_clip;
   gl_FragColor = filterColor(gl_FragColor);
 }

packages/layers/src/Geometry/shaders/plane_vert.glsl

@@ -2,6 +2,8 @@ precision highp float;
 uniform mat4 u_ModelMatrix;
 
 uniform mat4 u_Mvp;
+uniform float u_opacity;
+uniform float u_terrainClipHeight;
 
 attribute vec3 a_Position;
 attribute vec2 a_Uv;
@@ -9,6 +11,7 @@ attribute vec3 a_Color;
 
 varying vec3 v_Color;
 varying vec2 v_uv;
+varying float v_clip;
 
 #pragma include "projection"
 #pragma include "picking"
@@ -17,6 +20,12 @@ void main() {
    v_uv = a_Uv;
   
    vec4 project_pos = project_position(vec4(a_Position, 1.0));
+
+   v_clip = 1.0;
+   if(a_Position.z < u_terrainClipHeight) {
+      v_clip = 0.0;
+   }
+  
    // gl_Position = project_common_position_to_clipspace(vec4(project_pos.xy,0., 1.0));
 
    // float x = 1.0;
@@ -35,12 +44,10 @@ void main() {
    // );
 
    if(u_CoordinateSystem == COORDINATE_SYSTEM_P20_2) { // gaode2.x
-      gl_Position = u_Mvp * (vec4(project_pos.xy, 0., 1.0));
+      gl_Position = u_Mvp * (vec4(project_pos.xy, a_Position.z, 1.0));
    } else {
-      gl_Position = project_common_position_to_clipspace(vec4(project_pos.xy, 0., 1.0));
+      gl_Position = project_common_position_to_clipspace(vec4(project_pos.xy, a_Position.z, 1.0));
    }
 
    setPickingColor(a_PickingColor);
-
-   gl_PointSize = 10.0;
 }

packages/layers/src/core/interface.ts

@@ -106,6 +106,7 @@ export interface IGeometryLayerStyleOptions {
   maskInside?: boolean;
 
   mapTexture?: string;
+  terrainTexture?: string;
 
   // planeGeometry
   center?: [number, number];
@@ -114,6 +115,9 @@ export interface IGeometryLayerStyleOptions {
 
   widthSegments?: number;
   heightSegments?: number;
+
+  terrainClipHeight?: number;
+  rgb2height?: (r: number, g: number, b: number) => number;
 }
 
 export enum CanvasUpdateType {

packages/layers/src/plugins/DataMappingPlugin.ts

@@ -180,7 +180,7 @@ export default class DataMappingPlugin implements ILayerPlugin {
           // TODO: 避免经纬度被重复计算导致坐标位置偏移
           .filter((d) => !d.originCoordinates)
           .map((d) => {
-            d.version = 'GAODE2.x';
+            d.version = Version['GAODE2.x'];
             // @ts-ignore
             d.originCoordinates = cloneDeep(d.coordinates); // 为了兼容高德1.x 需要保存一份原始的经纬度坐标数据（许多上层逻辑依赖经纬度数据）
             // @ts-ignore
@@ -193,7 +193,7 @@ export default class DataMappingPlugin implements ILayerPlugin {
           // TODO: 避免经纬度被重复计算导致坐标位置偏移
           .filter((d) => !d.originCoordinates)
           .map((d) => {
-            d.version = 'GAODE2.x';
+            d.version = Version['GAODE2.x'];
             // @ts-ignore
             d.originCoordinates = cloneDeep(d.coordinates); // 为了兼容高德1.x 需要保存一份原始的经纬度坐标数据（许多上层逻辑依赖经纬度数据）
             // @ts-ignore

stories/Object/components/plane.tsx

@@ -1,5 +1,5 @@
 import { GeometryLayer, Scene, IMapService } from '@antv/l7';
-import { GaodeMap, Mapbox } from '@antv/l7-maps';
+import { GaodeMap, GaodeMapV2, Mapbox } from '@antv/l7-maps';
 import * as React from 'react';
 
 export default class Demo extends React.Component {
@@ -13,7 +13,8 @@ export default class Demo extends React.Component {
   public async componentDidMount() {
     const scene = new Scene({
       id: 'map',
-      map: new GaodeMap({
+      // map: new GaodeMap({
+      map: new GaodeMapV2({
         // map: new Mapbox({
         pitch: 0,
         // style: 'dark',
@@ -49,16 +50,16 @@ export default class Demo extends React.Component {
     scene.on('loaded', () => {
       scene.addLayer(layer);
 
-      setTimeout(() => {
+      // setTimeout(() => {
+      //   // layer.style({
+      //   //   mapTexture: ""
+      //   // })
       //   layer.style({
-        //   mapTexture: ""
-        // })
-        layer.style({
-          mapTexture:
-            'https://gw.alipayobjects.com/mdn/rms_816329/afts/img/A*GJhASbfQTK8AAAAAAAAAAAAAARQnAQ',
-        });
-        scene.render();
-      }, 2000);
+      //     mapTexture:
+      //       'https://gw.alipayobjects.com/mdn/rms_816329/afts/img/A*GJhASbfQTK8AAAAAAAAAAAAAARQnAQ',
+      //   });
+      //   scene.render();
+      // }, 2000);
     });
   }
 

stories/Object/components/planeTerrain.tsx

@@ -0,0 +1,81 @@
+import { GeometryLayer, Scene, IMapService } from '@antv/l7';
+import { GaodeMap, Mapbox, GaodeMapV2 } from '@antv/l7-maps';
+import * as React from 'react';
+
+export default class Demo extends React.Component {
+  // @ts-ignore
+  private scene: Scene;
+
+  public componentWillUnmount() {
+    this.scene.destroy();
+  }
+
+  public async componentDidMount() {
+    const scene = new Scene({
+      id: 'map',
+      map: new GaodeMap({
+        // map: new GaodeMapV2({
+        // map: new Mapbox({
+        pitch: 60,
+        center: [120.1025, 30.2594],
+        rotation: 220,
+        zoom: 14,
+      }),
+    });
+    this.scene = scene;
+
+    let layer = new GeometryLayer()
+      .style({
+        width: 0.074,
+        height: 0.061,
+        center: [120.1025, 30.2594],
+        widthSegments: 200,
+        heightSegments: 200,
+        terrainClipHeight: 1,
+        mapTexture:
+          'https://gw.alipayobjects.com/mdn/rms_23a451/afts/img/A*gA0NRbuOF5cAAAAAAAAAAAAAARQnAQ',
+        terrainTexture:
+          'https://gw.alipayobjects.com/mdn/rms_23a451/afts/img/A*eYFaRYlnnOUAAAAAAAAAAAAAARQnAQ',
+        rgb2height: (r: number, g: number, b: number) => {
+          let h =
+            -10000.0 +
+            (r * 255.0 * 256.0 * 256.0 + g * 255.0 * 256.0 + b * 255.0) * 0.1;
+          h = h / 20 - 127600;
+          h = Math.max(0, h);
+          return h;
+        },
+      })
+      .color('#ff0');
+
+    scene.on('loaded', () => {
+      scene.addLayer(layer);
+      // setTimeout(() => {
+      //   // layer.style({
+      //   //   mapTexture: ""
+      //   // })
+      //   layer.style({
+      //     mapTexture:
+      //       'https://gw.alipayobjects.com/mdn/rms_816329/afts/img/A*GJhASbfQTK8AAAAAAAAAAAAAARQnAQ',
+      //   });
+      //   scene.render();
+      // }, 2000);
+    });
+  }
+
+  public render() {
+    return (
+      <>
+        <div
+          id="map"
+          style={{
+            position: 'absolute',
+            top: 0,
+            left: 0,
+            right: 0,
+            bottom: 0,
+          }}
+        />
+      </>
+    );
+  }
+}

stories/Object/map.stories.tsx

@@ -6,6 +6,7 @@ import Taifong from './components/taifeng'
 import Radar from './components/radar';
 import CanvasDemo from './components/canvas';
 import Plane from './components/plane';
+import PlaneTerrain from './components/planeTerrain';
 
 storiesOf('Object', module)
         .add('water', () => <Water />)
@@ -14,3 +15,4 @@ storiesOf('Object', module)
         .add('Radar', () => <Radar/>)
         .add('CanvasDemo', () => <CanvasDemo/>)
         .add('Plane', () => <Plane/>)
+        .add('PlaneTerrain', () => <PlaneTerrain/>)