ST_ForcePolygonCW — Orients all exterior rings clockwise and all interior rings counter-clockwise.


geometry ST_ForcePolygonCW ( geometry geom );


Forces (Multi)Polygons to use a clockwise orientation for their exterior ring, and a counter-clockwise orientation for their interior rings. Non-polygonal geometries are returned unchanged.

2.2.0 버전부터 사용할 수 있습니다.

This function supports 3d and will not drop the z-index.

This function supports M coordinates.