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SphereGeometry

new Cesium.SphereGeometry(options)
engine/Source/Core/SphereGeometry.js 31

对以原点为中心的球体的描述。 A description of a sphere centered at the origin.
名称 Name 类型 Type 说明 Description
options object 可选 optional 具有以下属性的对象： Object with the following properties:
名称 Name 类型 Type 默认值 Default 说明 Description
radius number 1.0 可选 optional 球体的半径。 The radius of the sphere.
stackPartitions number 64 可选 optional 将椭球体划分为堆栈的次数。 The number of times to partition the ellipsoid into stacks.
slicePartitions number 64 可选 optional 将椭球分割成径向切片的次数。 The number of times to partition the ellipsoid into radial slices.
vertexFormat VertexFormat VertexFormat.DEFAULT 可选 optional 要计算的顶点属性。 The vertex attributes to be computed.
抛出： Throws:
  • DeveloperError ：options.slicePartitions 不能少于三个。 : options.slicePartitions cannot be less than three.
  • DeveloperError : options.stackPartitions cannot be less than three.
示例： Example:
const sphere = new Cesium.SphereGeometry({
  radius : 100.0,
  vertexFormat : Cesium.VertexFormat.POSITION_ONLY
});
const geometry = Cesium.SphereGeometry.createGeometry(sphere);
另见： See:
  • SphereGeometry#createGeometry

成员 Members

static Cesium.SphereGeometry.packedLength : number
engine/Source/Core/SphereGeometry.js 49

用于将对象打包到数组中的元素数量。 The number of elements used to pack the object into an array.

方法 Methods

static Cesium.SphereGeometry.createGeometry(sphereGeometry) → Geometry|undefined
engine/Source/Core/SphereGeometry.js 114

计算球体的几何表示，包括其顶点、索引和边界球体。 Computes the geometric representation of a sphere, including its vertices, indices, and a bounding sphere.
名称 Name 类型 Type 说明 Description
sphereGeometry SphereGeometry 球体的描述。 A description of the sphere.
返回： Returns:
计算的顶点和索引。 The computed vertices and indices.

static Cesium.SphereGeometry.pack(value, array, startingIndex) → Array.<number>
engine/Source/Core/SphereGeometry.js 60

将提供的实例存储到提供的数组中。 Stores the provided instance into the provided array.
名称 Name 类型 Type 默认值 Default 说明 Description
value SphereGeometry 包装的价值。 The value to pack.
array Array.<number> 要打包到的数组。 The array to pack into.
startingIndex number 0 可选 optional 开始打包元素的数组索引。 The index into the array at which to start packing the elements.
返回： Returns:
被打包成的数组 The array that was packed into

static Cesium.SphereGeometry.unpack(array, startingIndex, result) → SphereGeometry
engine/Source/Core/SphereGeometry.js 85

从打包数组中检索实例。 Retrieves an instance from a packed array.
名称 Name 类型 Type 默认值 Default 说明 Description
array Array.<number> 打包的数组。 The packed array.
startingIndex number 0 可选 optional 要解包的元素的起始索引。 The starting index of the element to be unpacked.
result SphereGeometry 可选 optional 用于存储结果的对象。 The object into which to store the result.
返回： Returns:
修改后的结果参数或新的 SphereGeometry 实例（如果未提供）。 The modified result parameter or a new SphereGeometry instance if one was not provided.
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