clipConvexPolygonInPlace MethodStatic

Clip a polygon to one side of a plane.

• Results with 2 or fewer points are ignored.
• Other than ensuring capacity in the arrays, there are no object allocations during execution of this function.
• plane is passed as unrolled Point4d (ax,ay,az,aw) point (x,y,z) acts as homogeneous (x,y,z,1)
  • keepPositive === true selects positive altitudes.

clipConvexPolygonInPlace(plane: PlaneAltitudeEvaluator, xyz: GrowableXYZArray, work: GrowableXYZArray, keepPositive: booleantrue, tolerance: numberGeometry.smallMetricDistance): number

@returns the number of crossings. If this is larger than 2, the result is "correct" in a parity sense but may have overlapping (hence cancelling) parts.

Returns - number

the number of crossings. If this is larger than 2, the result is "correct" in a parity sense but may have overlapping (hence cancelling) parts.

Defined in

• geometry3d/PolygonOps.ts Line 1430