Name
CG_Orientation — Determine surface orientation
Synopsis
integer CG_Orientation(geometry geom);
Description
The function only applies to polygons. It returns -1 if the polygon is counterclockwise oriented and 1 if the polygon is clockwise oriented.
Availability: 3.5.0
This method needs SFCGAL backend.
This function supports 3d and will not drop the z-index.