ClippingPolygon

new Ditap.ClippingPolygon(options)

A geodesic polygon to be used with ClippingPlaneCollection for selectively hiding regions in a model, a 3D tileset, or the globe.
Name Type Description
options object Object with the following properties:
Name Type Default Description
positions Array.<Cartesian3> A list of three or more Cartesian coordinates defining the outer ring of the clipping polygon.
ellipsoid Ellipsoid Ellipsoid.default optional
Example:
const positions = Ditap.Cartesian3.fromRadiansArray([
    -1.3194369277314022,
    0.6988062530900625,
    -1.31941,
    0.69879,
    -1.3193955980204217,
    0.6988091578771254,
    -1.3193931220959367,
    0.698743632490865,
    -1.3194358224045408,
    0.6987471965556998,
]);

const polygon = new Ditap.ClippingPolygon({
    positions: positions
});

Members

readonly ellipsoid : Ellipsoid

Returns the ellipsoid used to project the polygon onto surfaces when clipping.

readonly length : number

Returns the total number of positions in the polygon, include any holes.

readonly positions : Array.<Cartesian3>

Returns the outer ring of positions.

Methods

static Ditap.ClippingPolygon.clone(polygon, result) → ClippingPolygon

Clones the ClippingPolygon without setting its ownership.
Name Type Description
polygon ClippingPolygon The ClippingPolygon to be cloned
result ClippingPolygon optional The object on which to store the cloned parameters.
Returns:
a clone of the input ClippingPolygon

static Ditap.ClippingPolygon.equals(left, right) → boolean

Compares the provided ClippingPolygons and returns true if they are equal, false otherwise.
Name Type Description
left Plane The first polygon.
right Plane The second polygon.
Returns:
true if left and right are equal, false otherwise.

computeRectangle(result) → Rectangle

Computes a cartographic rectangle which encloses the polygon defined by the list of positions, including cases over the international date line and the poles.
Name Type Description
result Rectangle optional An object in which to store the result.
Returns:
The result rectangle
packages/engine
packages/widgets