mirror of https://gitee.com/antv-l7/antv-l7
100 lines
2.6 KiB
HTML
100 lines
2.6 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<meta name="geometry" content="diagram">
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<link rel="stylesheet" href="./assets/common.css">
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<link rel="stylesheet" href="./assets/info.css">
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<title>animateLine</title>
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<style>
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#map { position:absolute; top:0; bottom:0; width:100%; }
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.amap-maps {
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cursor: auto !important
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}
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</style>
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</head>
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<body>
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<div id="map"></div>
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<script src="https://webapi.amap.com/maps?v=1.4.8&key=15cd8a57710d40c9b7c0e3cc120f1200&plugin=Map3D"></script>
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<script src="./assets/jquery-3.2.1.min.js"></script>
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<script src="./assets/dat.gui.min.js"></script>
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<script src="../build/L7.js"></script>
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<script>
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var geojson = {
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"type": "FeatureCollection",
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"features": [{
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"type": "Feature",
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"geometry": {
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"type": "LineString",
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"coordinates": [
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[0, 0],
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[0.001, 0.0001]
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]
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}
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} ]
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};
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var speedFactor = 30; // number of frames per longitude degree
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var animation; // to store and cancel the animation
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var startTime = 0;
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var progress = 0; // progress = timestamp - startTime
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var resetTime = false; // indicator of whether time reset is needed for the animation
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var pauseButton = document.getElementById('pause');
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const scene = new L7.Scene({
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id: 'map',
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mapStyle: 'light', // 样式URL
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center: [ 120.19382669582967, 30.258134 ],
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pitch: 0,
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zoom: 2,
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maxZoom:20,
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minZoom:0,
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});
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scene.on('loaded', () => {
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const linelayer = scene.LineLayer({
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zIndex: 2
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})
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.source(geojson)
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.size([2,1])
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.shape('line')
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.color( "#2894E0")
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.render();
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startTime = performance.now();
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animateLine(0);
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function animateLine(timestamp) {
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if (resetTime) {
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// resume previous progress
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startTime = performance.now() - progress;
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resetTime = false;
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} else {
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progress = timestamp - startTime;
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}
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// restart if it finishes a loop
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if (progress > speedFactor * 360) {
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startTime = timestamp;
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geojson.features[0].geometry.coordinates = [
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[0, 0],
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[0.001, 0.0001]
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];
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} else {
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var x = progress / speedFactor;
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// draw a sine wave with some math.
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var y = Math.sin(x * Math.PI / 90) * 40;
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// append new coordinates to the lineString
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geojson.features[0].geometry.coordinates.push([x, y]);
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// then update the map
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linelayer.setData(geojson);
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}
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// Request the next frame of the animation.
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animation = requestAnimationFrame(animateLine);
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}
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});
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</script>
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</body>
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</html>
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