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WallGeometry

new Cesium.WallGeometry(options)
engine/Source/Core/WallGeometry.js 64

A description of a wall, which is similar to a KML line string. A wall is defined by a series of points, which extrude down to the ground. Optionally, they can extrude downwards to a specified height.
Name Type Description
options object Object with the following properties:
Name Type Default Description
positions Array.<Cartesian3> An array of Cartesian objects, which are the points of the wall.
granularity number CesiumMath.RADIANS_PER_DEGREE optional The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
maximumHeights Array.<number> optional An array parallel to positions that give the maximum height of the wall at positions. If undefined, the height of each position in used.
minimumHeights Array.<number> optional An array parallel to positions that give the minimum height of the wall at positions. If undefined, the height at each position is 0.0.
ellipsoid Ellipsoid Ellipsoid.WGS84 optional The ellipsoid for coordinate manipulation
vertexFormat VertexFormat VertexFormat.DEFAULT optional The vertex attributes to be computed.
Throws:
  • DeveloperError : positions length must be greater than or equal to 2.
  • DeveloperError : positions and maximumHeights must have the same length.
  • DeveloperError : positions and minimumHeights must have the same length.
Example:
// create a wall that spans from ground level to 10000 meters
const wall = new Cesium.WallGeometry({
  positions : Cesium.Cartesian3.fromDegreesArrayHeights([
    19.0, 47.0, 10000.0,
    19.0, 48.0, 10000.0,
    20.0, 48.0, 10000.0,
    20.0, 47.0, 10000.0,
    19.0, 47.0, 10000.0
  ])
});
const geometry = Cesium.WallGeometry.createGeometry(wall);
Demo:
See:
  • WallGeometry#createGeometry
  • WallGeometry#fromConstantHeight

Members

packedLength : number
engine/Source/Core/WallGeometry.js 120

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

Methods

static Cesium.WallGeometry.createGeometry(wallGeometry) → Geometry|undefined
engine/Source/Core/WallGeometry.js 355

Computes the geometric representation of a wall, including its vertices, indices, and a bounding sphere.
Name Type Description
wallGeometry WallGeometry A description of the wall.
Returns:
The computed vertices and indices.

static Cesium.WallGeometry.fromConstantHeights(options) → WallGeometry
engine/Source/Core/WallGeometry.js 305

A description of a wall, which is similar to a KML line string. A wall is defined by a series of points, which extrude down to the ground. Optionally, they can extrude downwards to a specified height.
Name Type Description
options object Object with the following properties:
Name Type Default Description
positions Array.<Cartesian3> An array of Cartesian objects, which are the points of the wall.
maximumHeight number optional A constant that defines the maximum height of the wall at positions. If undefined, the height of each position in used.
minimumHeight number optional A constant that defines the minimum height of the wall at positions. If undefined, the height at each position is 0.0.
ellipsoid Ellipsoid Ellipsoid.WGS84 optional The ellipsoid for coordinate manipulation
vertexFormat VertexFormat VertexFormat.DEFAULT optional The vertex attributes to be computed.
Returns:
Example:
// create a wall that spans from 10000 meters to 20000 meters
const wall = Cesium.WallGeometry.fromConstantHeights({
  positions : Cesium.Cartesian3.fromDegreesArray([
    19.0, 47.0,
    19.0, 48.0,
    20.0, 48.0,
    20.0, 47.0,
    19.0, 47.0,
  ]),
  minimumHeight : 20000.0,
  maximumHeight : 10000.0
});
const geometry = Cesium.WallGeometry.createGeometry(wall);
See:
  • WallGeometry#createGeometry

static Cesium.WallGeometry.pack(value, array, startingIndex) → Array.<number>
engine/Source/Core/WallGeometry.js 133

Stores the provided instance into the provided array.
Name Type Default Description
value WallGeometry The value to pack.
array Array.<number> The array to pack into.
startingIndex number 0 optional The index into the array at which to start packing the elements.
Returns:
The array that was packed into

static Cesium.WallGeometry.unpack(array, startingIndex, result) → WallGeometry
engine/Source/Core/WallGeometry.js 205

Retrieves an instance from a packed array.
Name Type Default Description
array Array.<number> The packed array.
startingIndex number 0 optional The starting index of the element to be unpacked.
result WallGeometry optional The object into which to store the result.
Returns:
The modified result parameter or a new WallGeometry instance if one was not provided.
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