CG_IsPlanar — Check if a surface is or not planar
boolean CG_IsPlanar(geometry geom);
Tests whether the input geometry lies in a single plane in 3D.
Availability: 3.5.0
This method needs SFCGAL backend.
This function supports 3d and will not drop the z-index.
This function supports Polyhedral surfaces.
This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).