RectangleGeometry
查阅Mars3D API

new Cesium.RectangleGeometry(options)
engine/Source/Core/RectangleGeometry.js 1016

A description of a cartographic rectangle on an ellipsoid centered at the origin. Rectangle geometry can be rendered with both Primitive and GroundPrimitive.
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
rectangle Rectangle A cartographic rectangle with north, south, east and west properties in radians.
vertexFormat VertexFormat VertexFormat.DEFAULT 可选 The vertex attributes to be computed.
ellipsoid Ellipsoid Ellipsoid.default 可选 The ellipsoid on which the rectangle lies.
granularity number CesiumMath.RADIANS_PER_DEGREE 可选 The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
height number 0.0 可选 The distance in meters between the rectangle and the ellipsoid surface.
rotation number 0.0 可选 The rotation of the rectangle, in radians. A positive rotation is counter-clockwise.
stRotation number 0.0 可选 The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
extrudedHeight number 可选 The distance in meters between the rectangle's extruded face and the ellipsoid surface.
Throws:
  • DeveloperError : options.rectangle.north must be in the interval [-Pi/2, Pi/2].
  • DeveloperError : options.rectangle.south must be in the interval [-Pi/2, Pi/2].
  • DeveloperError : options.rectangle.east must be in the interval [-Pi, Pi].
  • DeveloperError : options.rectangle.west must be in the interval [-Pi, Pi].
  • DeveloperError : options.rectangle.north must be greater than options.rectangle.south.
使用示例:
// 1. create a rectangle
const rectangle = new Cesium.RectangleGeometry({
  ellipsoid : Cesium.Ellipsoid.default,
  rectangle : Cesium.Rectangle.fromDegrees(-80.0, 39.0, -74.0, 42.0),
  height : 10000.0
});
const geometry = Cesium.RectangleGeometry.createGeometry(rectangle);

// 2. create an extruded rectangle without a top
const rectangle = new Cesium.RectangleGeometry({
  ellipsoid : Cesium.Ellipsoid.default,
  rectangle : Cesium.Rectangle.fromDegrees(-80.0, 39.0, -74.0, 42.0),
  height : 10000.0,
  extrudedHeight: 300000
});
const geometry = Cesium.RectangleGeometry.createGeometry(rectangle);
Demo:
参考:
  • RectangleGeometry#createGeometry

成员(属性)

static Cesium.RectangleGeometry.packedLength : number
engine/Source/Core/RectangleGeometry.js 1061

The number of elements used to pack the object into an array.

方法

static Cesium.RectangleGeometry.computeRectangle(options, result) → Rectangle
engine/Source/Core/RectangleGeometry.js 1195

Computes the bounding rectangle based on the provided options
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
rectangle Rectangle A cartographic rectangle with north, south, east and west properties in radians.
ellipsoid Ellipsoid Ellipsoid.default 可选 The ellipsoid on which the rectangle lies.
granularity number CesiumMath.RADIANS_PER_DEGREE 可选 The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
rotation number 0.0 可选 The rotation of the rectangle, in radians. A positive rotation is counter-clockwise.
result Rectangle 可选 An object in which to store the result.
返回值:
The result rectangle

static Cesium.RectangleGeometry.createGeometry(rectangleGeometry) → Geometry|undefined
engine/Source/Core/RectangleGeometry.js 1231

Computes the geometric representation of a rectangle, including its vertices, indices, and a bounding sphere.
参数名称 类型 描述信息
rectangleGeometry RectangleGeometry A description of the rectangle.
返回值:
The computed vertices and indices.
Throws:

static Cesium.RectangleGeometry.pack(value, array, startingIndex) → Array.<number>
engine/Source/Core/RectangleGeometry.js 1076

Stores the provided instance into the provided array.
参数名称 类型 默认值 描述信息
value RectangleGeometry The value to pack.
array Array.<number> The array to pack into.
startingIndex number 0 可选 The index into the array at which to start packing the elements.
返回值:
The array that was packed into

static Cesium.RectangleGeometry.unpack(array, startingIndex, result) → RectangleGeometry
engine/Source/Core/RectangleGeometry.js 1127

Retrieves an instance from a packed array.
参数名称 类型 默认值 描述信息
array Array.<number> The packed array.
startingIndex number 0 可选 The starting index of the element to be unpacked.
result RectangleGeometry 可选 The object into which to store the result.
返回值:
The modified result parameter or a new RectangleGeometry instance if one was not provided.
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