PlaneOutlineGeometry

PlaneOutlineGeometry是一个表示平面的几何体，用于绘制平面的轮廓线。

代码示例

//创建一个平面的几何体
var geometry = new Cesium.PlaneOutlineGeometry({
  center: Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883),
  dimensions: new Cesium.Cartesian2(400000.0, 300000.0)
});

//将平面的几何体添加到场景中
var primitive = new Cesium.Primitive({
  geometryInstances: new Cesium.GeometryInstance({
      geometry: geometry,
      attributes: {
          color: Cesium.ColorGeometryInstanceAttribute.fromColor(Cesium.Color.YELLOW)
      }
  }),
  appearance: new Cesium.PerInstanceColorAppearance()
});

//将primitive添加到场景中
viewer.scene.primitives.add(primitive);

属性

方法

示例代码

var dimensions = new Cesium.Cartesian2(400000.0, 300000.0);

//从尺寸参数创建平面的几何体
var geometry = Cesium.PlaneOutlineGeometry.fromDimensions({
    dimensions: dimensions,
    vertexFormat: Cesium.VertexFormat.POSITION_ONLY
});

//计算用于存储对象的压缩数组的长度
var length = Cesium.PlaneOutlineGeometry.packedLength;

//将对象以压缩格式存储到数组中
var array = new Float32Array(length);
Cesium.PlaneOutlineGeometry.pack(geometry, array);

//从数组中解压缩对象
var result = new Cesium.PlaneOutlineGeometry();
Cesium.PlaneOutlineGeometry.unpack(array, 0, result);

参考

• PlaneOutlineGeometry