# WallOutlineGeometry

#### new Cesium.WallOutlineGeometry(options)
Core/WallOutlineGeometry.js 73

  A description of a wall outline. 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

  ##### 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 outline that spans from ground level to 10000 meters
      var wall = new Cesium.WallOutlineGeometry({
        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
        ])
      });
      var geometry = Cesium.WallOutlineGeometry.createGeometry(wall);

  ##### See:

  - WallGeometry#createGeometry
  - WallGeometry#fromConstantHeight

### Members

#### packedLength : Number
Core/WallOutlineGeometry.js 114

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

### Methods

#### staticCesium.WallOutlineGeometry.createGeometry(wallGeometry) → Geometry|undefined
Core/WallOutlineGeometry.js 333

  Computes the geometric representation of a wall outline, including its vertices, indices, and a bounding sphere.

  Name | Type | Description
  --- | --- | ---
  `wallGeometry` | WallOutlineGeometry | A description of the wall outline.

  ##### Returns:

  The computed vertices and indices.

#### staticCesium.WallOutlineGeometry.fromConstantHeights(options) → WallOutlineGeometry
Core/WallOutlineGeometry.js 284

  A description of a walloutline. 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

  ##### Returns:

  ##### Example:

      // create a wall that spans from 10000 meters to 20000 meters
      var wall = Cesium.WallOutlineGeometry.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
      });
      var geometry = Cesium.WallOutlineGeometry.createGeometry(wall);

  ##### See:

  - WallOutlineGeometry#createGeometry

#### staticCesium.WallOutlineGeometry.pack(value, array, startingIndex) → Array.<Number>
Core/WallOutlineGeometry.js 126

  Stores the provided instance into the provided array.

  Name | Type | Default | Description
  --- | --- | --- | ---
  `value` | WallOutlineGeometry |  | 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

#### staticCesium.WallOutlineGeometry.unpack(array, startingIndex, result) → WallOutlineGeometry
Core/WallOutlineGeometry.js 193

  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` | WallOutlineGeometry |  | optional The object into which to store the result.

  ##### Returns:

  The modified result parameter or a new WallOutlineGeometry instance if one was not provided.