Name
ST_ForcePolygonCCW — Orients all exterior rings counter-clockwise and all interior rings clockwise.
Synopsis
geometry ST_ForcePolygonCCW ( geometry geom );
설명
Forces (Multi)Polygons to use a counter-clockwise orientation for their exterior ring, and a 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.