Class: EllipsoidGeometry

EllipsoidGeometry

new EllipsoidGeometry()

Used to define classes of ellipsoidal geometric structures.

Name Type Default Description
options.radii Cartesian3 Cartesian3(1.0, 1.0, 1.0) optional

The radius of an ellipsoid in the x, y, and z directions.
options.stackPartitions Number 64 optional

The number of times an ellipsoid is divided into stacks.
options.slicePartitions Number 64 optional

The number of times the ellipsoid is divided into radial slices.
options.vertexFormat VertexFormat VertexFormat.DEFAULT optional

The vertex attributes to be calculated.
See:
  • EllipsoidGeometry#createGeometry
Throws:

  • options.slicePartitions cannot be less than three.

    Type
    DeveloperError

  • options.stackPartitions cannot be less than three.

    Type
    DeveloperError
Example
var ellipsoid = new SuperMap3D.EllipsoidGeometry({
  vertexFormat : SuperMap3D.VertexFormat.POSITION_ONLY,
  radii : new SuperMap3D.Cartesian3(1000000.0, 500000.0, 500000.0)
});
var geometry = SuperMap3D.EllipsoidGeometry.createGeometry(ellipsoid);

Members

static packedLengthNumber

The number of elements used to package an object into an array.

Methods

static createGeometry(ellipsoidGeometry){Geometry|undefined}

Calculate the geometric representation of an ellipsoid, including its vertices, indices, and enclosing spheres.

Name Type Description
ellipsoidGeometry EllipsoidGeometry

A description of an ellipsoid.
Returns:
Type Description
Geometry | undefined Compute vertices and indexes.

static pack(value, array, startingIndex){Array.<Number>}

Store the provided instance in the provided array.

Name Type Default Description
value EllipsoidGeometry

The value to be packaged.
array Array.<Number>

The array to be packaged.
startingIndex Number 0 optional

Start packaging the array index of elements.
Returns:
Type Description
Array.<Number> The loaded array.

static unpack(array, startingIndex, result){EllipsoidGeometry}

Retrieve instances from the packaged array.

Name Type Default Description
array Array.<Number>

Packaged array.
startingIndex Number 0 optional

The starting index of the element to be unpacked.
result EllipsoidGeometry optional

The object that stores the results.
Returns:
Type Description
EllipsoidGeometry The modified result parameters or a new EllipsoidGeometry instance (if not provided).