This topic describes the ST_RotateX function. This function rotates a geometry object by specific radians about the x-axis.
Syntax
geometry ST_RotateX(geometry geomA , float rotRadians);
Parameters
Parameter | Description |
---|---|
geomA | The geometry object that you want to specify. |
rotRadians | The radian in the rotation. |
Description
- The ST_RotateX(geomA,rotRadians) function is shorthand for the ST_Affine(geomA,1,0,0,0,cos(rotRadians),-sin(rotRadians), 0,sin(rotRadians), or cos(rotRadians),0,0,0) function.
- This function supports circular strings, curves, polyhedral surfaces, triangles, triangulated irregular network (TIN) surfaces, and 3D objects.
Examples
SELECT ST_AsEWKT(ST_RotateX('LINESTRING (1 2,2 2)'::geometry, pi()));
st_asewkt
-----------------------
LINESTRING(1 -2,2 -2)
(1 row)