EllipseGeometry

EllipseGeometry

new

A description of an ellipse on an ellipsoid.

Parameters:
Name Type Argument Default Description
options.center Cartesian3 The ellipse's center point in the fixed frame.
options.semiMajorAxis Number The length of the ellipse's semi-major axis in meters.
options.semiMinorAxis Number The length of the ellipse's semi-minor axis in meters.
options.ellipsoid Ellipsoid <optional>
Ellipsoid.WGS84 The ellipsoid the ellipse will be on.
options.height Number <optional>
0.0 The height above the ellipsoid.
options.extrudedHeight Number <optional>
The height of the extrusion.
options.rotation Number <optional>
0.0 The angle from north (clockwise) in radians. The default is zero.
options.stRotation Number <optional>
0.0 The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
options.granularity Number <optional>
CesiumMath.RADIANS_PER_DEGREE The angular distance between points on the ellipse in radians.
options.vertexFormat VertexFormat <optional>
VertexFormat.DEFAULT The vertex attributes to be computed.
Throws:
Example
// Create an ellipse.
var ellipsoid = Ellipsoid.WGS84;
var ellipse = new EllipseGeometry({
  ellipsoid : ellipsoid,
  center : ellipsoid.cartographicToCartesian(Cartographic.fromDegrees(-75.59777, 40.03883)),
  semiMajorAxis : 500000.0,
  semiMinorAxis : 300000.0,
  rotation : CesiumMath.toRadians(60.0)
});
var geometry = EllipseGeometry.createGeometry(ellipse);
See:
  • EllipseGeometry#createGeometry
Source:

Methods

<static>

Computes the geometric representation of a ellipse on an ellipsoid, including its vertices, indices, and a bounding sphere.

Parameters:
Name Type Description
ellipseGeometry EllipseGeometry A description of the ellipse.
Returns:
Geometry The computed vertices and indices.