EllipsoidGeometry - CesiumJS API 文档

new Cesium.EllipsoidGeometry(options)

以原产地为中心的椭圆形的描述.

Name Type Description

options

object

optional 下列属性的对象 :

Name	Type	Default	Description
`radii`	Cartesian3	`Cartesian3(1.0, 1.0, 1.0)`	optional The radii of the ellipsoid in the x, y, and z directions.
`innerRadii`	Cartesian3	`options.radii`	optional The inner radii of the ellipsoid in the x, y, and z directions.
`minimumClock`	number	`0.0`	optional 从正X轴测量到正Y轴的xy平面上的最低倾角.
`maximumClock`	number	`2*PI`	optional 从正X轴向正Y轴测得的xy平面中的最大倾角.
`minimumCone`	number	`0.0`	optional 从正Z轴和向负Z轴测得的最小角.
`maximumCone`	number	`PI`	optional 从正Z轴和向负Z轴测得的最大角.
`stackPartitions`	number	`64`	optional 将椭圆分割成堆的次数.
`slicePartitions`	number	`64`	optional 将椭圆片分割成射线片的次数.
`vertexFormat`	VertexFormat	`VertexFormat.DEFAULT`	optional The vertex attributes to be computed.

Throws:

DeveloperError : options.slicePartitions cannot be less than three.
DeveloperError : options.stackPartitions cannot be less than three.

Example:

const ellipsoid = new Cesium.EllipsoidGeometry({
  vertexFormat : Cesium.VertexFormat.POSITION_ONLY,
  radii : new Cesium.Cartesian3(1000000.0, 500000.0, 500000.0)
});
const geometry = Cesium.EllipsoidGeometry.createGeometry(ellipsoid);

See:

EllipsoidGeometry#createGeometry

Members

static Cesium.EllipsoidGeometry.packedLength : number

用于将对象组合成数组的元素数量.

Methods

static Cesium.EllipsoidGeometry.createGeometry(ellipsoidGeometry) → Geometry|undefined

计算椭圆形的几何表示,包括它的顶点,指数,和边框.

Name	Type	Description
`ellipsoidGeometry`	EllipsoidGeometry	椭圆形的描述.

Returns:

计算出的顶点和指数.

static Cesium.EllipsoidGeometry.pack(value, array, startingIndex) → Array.<number>

将所提供的实例存储到所提供的数组中.

Name	Type	Default	Description
`value`	EllipsoidGeometry		包装的价值.
`array`	Array.<number>		装入的阵列.
`startingIndex`	number	`0`	optional The index into the array at which to start packing the elements.

Returns:

装入的阵列

static Cesium.EllipsoidGeometry.unpack(array, startingIndex, result) → EllipsoidGeometry

从组合的数组中获取实例 .

Name	Type	Default	Description
`array`	Array.<number>		装填的阵列.
`startingIndex`	number	`0`	optional The starting index of the element to be unpacked.
`result`	EllipsoidGeometry		optional 存储结果的对象.

Returns:

如果不提供经过修改的结果参数或新的椭圆图形实例.