Cesium JS API
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ClippingPlane

CesiumJS中的裁剪平面用于通过剪切场景中的几何体来创建自定义的视图。该类提供了创建裁剪平面的方法和属性。

构造函数

  • ClippingPlane(plane: Cartesian4, unionClippingRegions?: boolean)

    构造函数用于创建一个裁剪平面对象。参数plane是一个Cartesian4向量,表示裁剪平面的法向量和偏移量。参数unionClippingRegions是一个可选的boolean类型,用于指定当多个裁剪平面同时存在时,是否进行合并。

属性

  • plane : Cartesian4

    一个Cartesian4向量,表示裁剪平面的法向量和偏移量。

  • unionClippingRegions : boolean

    表示当多个裁剪平面同时存在时,是否进行合并。

方法

  • getIntersectionWithBoundingSphere(boundingSphere: BoundingSphere) : Intersect

    返回一个Intersect枚举值,表示裁剪平面与指定边界球的交点状态,有以下四种结果:

    • 存在交点,并且球体被裁剪
    • 存在交点,并且球体未被裁剪
    • 不存在交点,并且球体完全被裁剪
    • 不存在交点,并且球体未被裁剪
  • getIntersectionWithBoundingBox(boundingBox: BoundingBox) : Intersect

    返回一个Intersect枚举值,表示裁剪平面与指定边界框的交点状态,有以下四种结果:

    • 存在交点,并且框体被裁剪
    • 存在交点,并且框体未被裁剪
    • 不存在交点,并且框体完全被裁剪
    • 不存在交点,并且框体未被裁剪
  • getIntersectionWithPlane(plane: ClippingPlane) : Line3D

    返回一个Line3D对象,表示裁剪平面与另一个裁剪平面的交点。

  • isClassified() : boolean

    返回一个布尔值,表示当前裁剪平面是否已分类。

  • setPlane(normal: Cartesian3, distance: number) : void

    用于设置裁剪平面的法向量和偏移量参数。

  • toString() : String

    返回一个描述裁剪平面的字符串。

示例

var plane = new Cesium.ClippingPlane(new Cesium.Cartesian4(1.0, 0.0, 0.0, -1000.0), true);

var boundingSphere = new Cesium.BoundingSphere(new Cesium.Cartesian3(0,0,0), 500);
var intersect = plane.getIntersectionWithBoundingSphere(boundingSphere);
if (intersect === Cesium.Intersect.INSIDE) {
    // Do something
} else if (intersect === Cesium.Intersect.OUTSIDE) {
    // Do something else
} else {
    // Do another thing
}