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KBE3D / KBCore / Cesium / RectangleGeometry
类: RectangleGeometry
A description of a cartographic rectangle on an ellipsoid centered at the origin. Rectangle geometry can be rendered with both Primitive and GroundPrimitive.
示例
ts
// 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);参数
Object with the following properties:
参数
A cartographic rectangle with north, south, east and west properties in radians.
参数
The vertex attributes to be computed.
参数
The ellipsoid on which the rectangle lies.
参数
The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
参数
The distance in meters between the rectangle and the ellipsoid surface.
参数
The rotation of the rectangle, in radians. A positive rotation is counter-clockwise.
参数
The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
参数
The distance in meters between the rectangle's extruded face and the ellipsoid surface.
属性
packedLength
staticpackedLength:number
The number of elements used to pack the object into an array.
方法
pack()
staticpack(value:RectangleGeometry,array:number[],startingIndex?:number):number[]
Stores the provided instance into the provided array.
参数
value
RectangleGeometry
The value to pack.
array
number[]
The array to pack into.
startingIndex?
number
The index into the array at which to start packing the elements.
返回
number[]
The array that was packed into
unpack()
staticunpack(array:number[],startingIndex?:number,result?:RectangleGeometry):RectangleGeometry
Retrieves an instance from a packed array.
参数
array
number[]
The packed array.
startingIndex?
number
The starting index of the element to be unpacked.
result?
RectangleGeometry
The object into which to store the result.
返回
RectangleGeometry
The modified result parameter or a new RectangleGeometry instance if one was not provided.
computeRectangle()
staticcomputeRectangle(options: {rectangle:Rectangle;ellipsoid?:Ellipsoid;granularity?:number;rotation?:number; },result?:Rectangle):Rectangle
Computes the bounding rectangle based on the provided options
参数
options
Object with the following properties:
rectangle
A cartographic rectangle with north, south, east and west properties in radians.
ellipsoid?
The ellipsoid on which the rectangle lies.
granularity?
number
The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
rotation?
number
The rotation of the rectangle, in radians. A positive rotation is counter-clockwise.
result?
An object in which to store the result.
返回
The result rectangle
createGeometry()
staticcreateGeometry(rectangleGeometry:RectangleGeometry):Geometry|undefined
Computes the geometric representation of a rectangle, including its vertices, indices, and a bounding sphere.
参数
rectangleGeometry
RectangleGeometry
A description of the rectangle.
返回
Geometry | undefined
The computed vertices and indices.
构造函数
构造函数
new RectangleGeometry(
options: {rectangle:Rectangle;vertexFormat?:VertexFormat;ellipsoid?:Ellipsoid;granularity?:number;height?:number;rotation?:number;stRotation?:number;extrudedHeight?:number; }):RectangleGeometry
参数
options
rectangle
vertexFormat?
ellipsoid?
granularity?
number
height?
number
rotation?
number
stRotation?
number
extrudedHeight?
number
返回
RectangleGeometry