PolygonPipeline

PolygonPipeline

Methods

<static>

DOC_TBA

Throws:

<static>

Subdivides positions and raises points to the surface of the ellipsoid.

Parameters:
Name Type Argument Default Description
positions Array An array of Cartesian3 positions of the polygon.
indices Array An array of indices that determines the triangles in the polygon.
granularity Number <optional>
CesiumMath.RADIANS_PER_DEGREE The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
Throws:

<static>

DOC_TBA

Throws:
Returns:
WindingOrder DOC_TBA

<static>

Given a polygon defined by an outer ring with one or more inner rings (holes), return a single list of points representing a polygon defined by the outer ring with the inner holes removed.

Parameters:
Name Type Description
outerRing Array An array of Cartesian points defining the outer boundary of the polygon.
innerRings Array An array of arrays of Cartesian points, where each array represents a hole in the polygon.
Throws:
Returns:
A single list of Cartesian points defining the polygon, including the eliminated inner ring.
Example
// Simplifying a polygon with multiple holes.
outerRing = PolygonPipeline.eliminateHoles(outerRing, innerRings);
polygon.setPositions(outerRing);

<static>

DOC_TBA Cleans up a simple polygon by removing duplicate adjacent positions and making the first position not equal the last position.

Throws:

<static>

Scales each position of a geometry's position attribute to a height, in place.

Parameters:
Name Type Argument Default Description
geometry Geometry The geometry whose positions are to be scaled.
height Number <optional>
0.0 The desired height to add to the positions of the geometry.
ellipsoid Ellipsoid <optional>
Ellipsoid.WGS84 The ellipsoid on which the positions lie.
scaleToSurface Boolean <optional>
true true if the positions need to be scaled to the surface before the height is added.
Returns:
Geometry The same geometry whose positions where scaled.

<static>

Triangulate a polygon

Parameters:
Name Type Description
positions Array Cartesian2 array containing the vertices of the polygon
Throws:
Returns:
Array - Index array representing triangles that fill the polygon