제목
CG_2DRotate — Rotates a geometry by a given angle around a specified point in 2D.
요약
geometry CG_2DRotate(geometry geom, float8 angle, float8 cx, float8 cy);
설명
Rotates the input geometry geom by angle radians around the point (cx, cy). The rotation is performed in 2D space; Z coordinates are dropped. Positive angles rotate the geometry counter-clockwise.
Availability: 3.6.0 - requires SFCGAL >= 2.0.0
This method needs SFCGAL backend.
예시
Code
SELECT CG_2DRotate('POINT(1 0)', pi()/2, 1, 1);
래스터 출력
POINT(2 1)
Figure