# PolygonOutlineGeometry

#### new Cesium.PolygonOutlineGeometry(options)
Core/PolygonOutlineGeometry.js 286

A description of the outline of a polygon on the ellipsoid. The polygon is defined by a polygon hierarchy.

Name | Type | Description
--- | --- | ---
`options` | Object | Object with the following properties:
Name | Type | Default | Description
--- | --- | --- | ---
`polygonHierarchy` | PolygonHierarchy |  | A polygon hierarchy that can include holes.
`height` | Number | `0.0` | optional The distance in meters between the polygon and the ellipsoid surface.
`extrudedHeight` | Number |  | optional The distance in meters between the polygon's extruded face and the ellipsoid surface.
`vertexFormat` | VertexFormat | `VertexFormat.DEFAULT` | optional The vertex attributes to be computed.
`ellipsoid` | Ellipsoid | `Ellipsoid.WGS84` | optional The ellipsoid to be used as a reference.
`granularity` | Number | `CesiumMath.RADIANS_PER_DEGREE` | optional The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
`perPositionHeight` | Boolean | `false` | optional Use the height of options.positions for each position instead of using options.height to determine the height.
`arcType` | ArcType | `ArcType.GEODESIC` | optional The type of path the outline must follow. Valid options are `ArcType.GEODESIC` and `ArcType.RHUMB`.

##### Example:

    // 1. create a polygon outline from points
    var polygon = new Cesium.PolygonOutlineGeometry({
      polygonHierarchy : new Cesium.PolygonHierarchy(
        Cesium.Cartesian3.fromDegreesArray([
          -72.0, 40.0,
          -70.0, 35.0,
          -75.0, 30.0,
          -70.0, 30.0,
          -68.0, 40.0
        ])
      )
    });
    var geometry = Cesium.PolygonOutlineGeometry.createGeometry(polygon);

    // 2. create a nested polygon with holes outline
    var polygonWithHole = new Cesium.PolygonOutlineGeometry({
      polygonHierarchy : new Cesium.PolygonHierarchy(
        Cesium.Cartesian3.fromDegreesArray([
          -109.0, 30.0,
          -95.0, 30.0,
          -95.0, 40.0,
          -109.0, 40.0
        ]),
        [new Cesium.PolygonHierarchy(
          Cesium.Cartesian3.fromDegreesArray([
            -107.0, 31.0,
            -107.0, 39.0,
            -97.0, 39.0,
            -97.0, 31.0
          ]),
          [new Cesium.PolygonHierarchy(
            Cesium.Cartesian3.fromDegreesArray([
              -105.0, 33.0,
              -99.0, 33.0,
              -99.0, 37.0,
              -105.0, 37.0
            ]),
            [new Cesium.PolygonHierarchy(
              Cesium.Cartesian3.fromDegreesArray([
                -103.0, 34.0,
                -101.0, 34.0,
                -101.0, 36.0,
                -103.0, 36.0
              ])
            )]
          )]
        )]
      )
    });
    var geometry = Cesium.PolygonOutlineGeometry.createGeometry(polygonWithHole);

    // 3. create extruded polygon outline
    var extrudedPolygon = new Cesium.PolygonOutlineGeometry({
      polygonHierarchy : new Cesium.PolygonHierarchy(
        Cesium.Cartesian3.fromDegreesArray([
          -72.0, 40.0,
          -70.0, 35.0,
          -75.0, 30.0,
          -70.0, 30.0,
          -68.0, 40.0
        ])
      ),
      extrudedHeight: 300000
    });
    var geometry = Cesium.PolygonOutlineGeometry.createGeometry(extrudedPolygon);

##### See:

- PolygonOutlineGeometry#createGeometry
- PolygonOutlineGeometry#fromPositions

### Members

#### packedLength : Number
Core/PolygonOutlineGeometry.js 330

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

### Methods

#### static Cesium.PolygonOutlineGeometry.createGeometry(polygonGeometry) → Geometry|undefined
Core/PolygonOutlineGeometry.js 478

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

Name | Type | Description
--- | --- | ---
`polygonGeometry` | PolygonOutlineGeometry | A description of the polygon outline.

##### Returns:

The computed vertices and indices.

#### static Cesium.PolygonOutlineGeometry.fromPositions(options) → PolygonOutlineGeometry
Core/PolygonOutlineGeometry.js 450

A description of a polygon outline from an array of positions.

Name | Type | Description
--- | --- | ---
`options` | Object | Object with the following properties:
Name | Type | Default | Description
--- | --- | --- | ---
`positions` | Array.<Cartesian3> |  | An array of positions that defined the corner points of the polygon.
`height` | Number | `0.0` | optional The height of the polygon.
`extrudedHeight` | Number |  | optional The height of the polygon extrusion.
`ellipsoid` | Ellipsoid | `Ellipsoid.WGS84` | optional The ellipsoid to be used as a reference.
`granularity` | Number | `CesiumMath.RADIANS_PER_DEGREE` | optional The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
`perPositionHeight` | Boolean | `false` | optional Use the height of options.positions for each position instead of using options.height to determine the height.
`arcType` | ArcType | `ArcType.GEODESIC` | optional The type of path the outline must follow. Valid options are `LinkType.GEODESIC` and `ArcType.RHUMB`.

##### Returns:

##### Example:

    // create a polygon from points
    var polygon = Cesium.PolygonOutlineGeometry.fromPositions({
      positions : Cesium.Cartesian3.fromDegreesArray([
        -72.0, 40.0,
        -70.0, 35.0,
        -75.0, 30.0,
        -70.0, 30.0,
        -68.0, 40.0
      ])
    });
    var geometry = Cesium.PolygonOutlineGeometry.createGeometry(polygon);

##### See:

- PolygonOutlineGeometry#createGeometry

#### static Cesium.PolygonOutlineGeometry.pack(value, array, startingIndex) → Array.<Number>
Core/PolygonOutlineGeometry.js 342

Stores the provided instance into the provided array.

Name | Type | Default | Description
--- | --- | --- | ---
`value` | PolygonOutlineGeometry |  | 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.PolygonOutlineGeometry.unpack(array, startingIndex, result) → PolygonOutlineGeometry
Core/PolygonOutlineGeometry.js 380

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

##### Returns:

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