arcgis 4 根据线坐标构建线动画
根据线动画
前期准备加载esri 需要的类
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const [Graphic, GraphicsLayer, Polyline] = await esriClass.load([esriClassName.Graphic, esriClassName.GraphicsLayer, esriClassName.Polyline]);
```javascript
class PathAnimatetionByFrame{
constructor(){
}
addLine(view, config) {
return new Promise((rs, rj) => {
const graphiclayer = new GraphicsLayer();
graphiclayer.removeAll();
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const geo = new Polyline({
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type: 'polyline',
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spatialReference: view.spatialReference,
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paths: [[]]
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});
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const gra = new Graphic(geo, config.symbol);
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graphiclayer.add(gra);
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const data = config.paths;
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const rate = config.rate;
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let curLineIndex = 0;
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let curPointindex = 0;
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window.requestAnimationFrame(() => {
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step(gra, geo, data);
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});
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function step(gra, geo, data) {
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let points = data[curLineIndex];
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for (let i = 0; i < rate; i++) {
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if (curPointindex > points.length - 1) {
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curLineIndex++;
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if (curLineIndex === data.length) {
更多参考 https://xiaozhuanlan.com/topic/2978031564
