ClippingPolygon
查阅Mars3D API

new Cesium.ClippingPolygon(options)
engine/Source/Scene/ClippingPolygon.js 38

A geodesic polygon to be used with ClippingPlaneCollection for selectively hiding regions in a model, a 3D tileset, or the globe.
参数名称 类型 描述信息
options object Object with the following properties:
参数名称 类型 默认值 描述信息
positions Array.<Cartesian3> A list of three or more Cartesian coordinates defining the outer ring of the clipping polygon.
ellipsoid Ellipsoid Ellipsoid.default 可选
使用示例:
const positions = Cesium.Cartesian3.fromRadiansArray([
    -1.3194369277314022,
    0.6988062530900625,
    -1.31941,
    0.69879,
    -1.3193955980204217,
    0.6988091578771254,
    -1.3193931220959367,
    0.698743632490865,
    -1.3194358224045408,
    0.6987471965556998,
]);

const polygon = new Cesium.ClippingPolygon({
    positions: positions
});

成员(属性)

readonly ellipsoid : Ellipsoid
engine/Source/Scene/ClippingPolygon.js 85

Returns the ellipsoid used to project the polygon onto surfaces when clipping.

readonly length : number
engine/Source/Scene/ClippingPolygon.js 61

Returns the total number of positions in the polygon, include any holes.

readonly positions : Array.<Cartesian3>
engine/Source/Scene/ClippingPolygon.js 73

Returns the outer ring of positions.

方法

static Cesium.ClippingPolygon.clone(polygon, result) → ClippingPolygon
engine/Source/Scene/ClippingPolygon.js 98

Clones the ClippingPolygon without setting its ownership.
参数名称 类型 描述信息
polygon ClippingPolygon The ClippingPolygon to be cloned
result ClippingPolygon 可选 The object on which to store the cloned parameters.
返回值:
a clone of the input ClippingPolygon

static Cesium.ClippingPolygon.equals(left, right) → boolean
engine/Source/Scene/ClippingPolygon.js 124

Compares the provided ClippingPolygons and returns true if they are equal, false otherwise.
参数名称 类型 描述信息
left Plane The first polygon.
right Plane The second polygon.
返回值:
true if left and right are equal, false otherwise.

computeRectangle(result) → Rectangle
engine/Source/Scene/ClippingPolygon.js 141

Computes a cartographic rectangle which encloses the polygon defined by the list of positions, including cases over the international date line and the poles.
参数名称 类型 描述信息
result Rectangle 可选 An object in which to store the result.
返回值:
The result rectangle
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