API Reference > geometry-core > CartesianGeometry > ConvexClipPlaneSet > classifyPointContainment classifyPointContainment Method Returns 1, 2, or 3 based on whether point array is strongly inside, ambiguous, or strongly outside respectively. This has a peculiar expected use case as a very fast pre-filter for more precise clipping. The expected point set is for a polygon. Hence any clipping will eventually have to consider the lines between the points. This method looks for the special case of a single clip plane that has all the points outside. In this case the whole polygon must be outside. Note that this does not detect a polygon that is outside but "crosses a corner" -- it is mixed with respect to multiple planes. classifyPointContainment(points: Point3d[], onIsOutside: boolean): ClipPlaneContainment Parameter Type Description points Point3d[] onIsOutside boolean Returns - ClipPlaneContainment Defined in clipping/ConvexClipPlaneSet.ts Line 494 Last Updated: 11 June, 2024