# 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.default` 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);``````
##### 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.default` optional The ellipsoid for coordinate manipulation
`vertexFormat` VertexFormat `VertexFormat.DEFAULT` optional The vertex attributes to be computed.
##### 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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