CircleGeometry

new Cesium.CircleGeometry(options)
Core/CircleGeometry.js 54

A description of a circle on the ellipsoid. Circle geometry can be rendered with both Primitive and GroundPrimitive.
Name Type Description
options Object Object with the following properties:
Name Type Default Description
center Cartesian3 The circle's center point in the fixed frame.
radius Number The radius in meters.
ellipsoid Ellipsoid Ellipsoid.WGS84 optional The ellipsoid the circle will be on.
height Number 0.0 optional The height above the ellipsoid.
granularity Number 0.02 optional The angular distance between points on the circle in radians.
vertexFormat VertexFormat VertexFormat.DEFAULT optional The vertex attributes to be computed.
extrudedHeight Number 0.0 optional The height of the extrusion relative to the ellipsoid.
stRotation Number 0.0 optional The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
Throws:
Example:
// Create a circle.
var circle = new Cesium.CircleGeometry({
  center : Cesium.Cartesian3.fromDegrees(-75.59777, 40.03883),
  radius : 100000.0
});
var geometry = Cesium.CircleGeometry.createGeometry(circle);
Demo:
See:

Members

staticCesium.CircleGeometry.packedLength : Number
Core/CircleGeometry.js 86

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

Methods

staticCesium.CircleGeometry.createGeometry(circleGeometry) → Geometry
Core/CircleGeometry.js 157

Computes the geometric representation of a circle on an ellipsoid, including its vertices, indices, and a bounding sphere.
Name Type Description
circleGeometry CircleGeometry A description of the circle.
Returns:
The computed vertices and indices.

staticCesium.CircleGeometry.pack(value, array, startingIndex)
Core/CircleGeometry.js 95

Stores the provided instance into the provided array.
Name Type Default Description
value CircleGeometry 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.

staticCesium.CircleGeometry.unpack(array, startingIndex, result) → CircleGeometry
Core/CircleGeometry.js 130

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 CircleGeometry optional The object into which to store the result.
Returns:
The modified result parameter or a new CircleGeometry instance if one was not provided.