ArcGIS API for JavaScript判断两个图层中图形的包含关系
时间: 2024-03-27 14:40:24 浏览: 86
要判断两个图层中图形的包含关系,可以使用ArcGIS API for JavaScript的`geometryEngine`模块中的`contains`方法。该方法用于判断一个几何对象是否包含另一个几何对象。
以下是一个示例代码:
```javascript
require([
"esri/geometry/geometryEngine",
"esri/Graphic",
"esri/layers/GraphicsLayer"
], function(geometryEngine, Graphic, GraphicsLayer) {
// 创建两个图形
var polygon1 = new Graphic({
geometry: {
type: "polygon",
rings: [[
[-97.06138,32.837],
[-97.06133,32.836],
[-97.06124,32.834],
[-97.06127,32.832],
[-97.06138,32.837]
]]
}
});
var polygon2 = new Graphic({
geometry: {
type: "polygon",
rings: [[
[-97.06326,32.759],
[-97.06298,32.755],
[-97.06153,32.749],
[-97.06326,32.759]
]]
}
});
// 创建一个图形层,并将两个图形添加到该图形层中
var graphicsLayer = new GraphicsLayer();
graphicsLayer.add(polygon1);
graphicsLayer.add(polygon2);
// 判断两个图形的包含关系
var contains = geometryEngine.contains(polygon1.geometry, polygon2.geometry);
console.log("polygon1是否包含polygon2:", contains);
// 将图形层添加到地图中显示
map.add(graphicsLayer);
});
```
在上面的示例代码中,我们创建了两个多边形图形`polygon1`和`polygon2`,然后将它们添加到一个图形层`graphicsLayer`中。接着使用`geometryEngine.contains`方法判断`polygon1`是否包含`polygon2`,并将结果输出到控制台中。最后将图形层添加到地图中显示。
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