Triangulates a meshgeom geometry object and returns the result for model rendering.
Syntax
meshgeom ST_Triangulate(meshgeom geom);Parameters
| Parameter | Description |
|---|---|
geom | The meshgeom object to triangulate. |
Description
ST_Triangulate returns a triangulated geometry object that is used to render models.
Examples
Triangulate a POLYGON patch
The input is a single quadrilateral polygon. ST_Triangulate decomposes it into two triangles.
SELECT ST_asText(ST_Triangulate('MESHGEOM(PATCH(POLYGON((0 0 0, 1 0 0, 1 1 0, 0 1 0, 0 0 0))))'));Output:
MESHGEOM(PATCH(INDEXSURFACE Z (VERTEX(0 0 0,1 0 0,1 1 0,0 1 0),INDEX((2,3,0),(0,1,2)))))Triangulate an INDEXSURFACE patch
SELECT ST_asText(ST_Triangulate('MESHGEOM(PATCH(INDEXSURFACE( VERTEX(0 0 0,1 0 0,1 1 0,0 1 0),INDEX((0,1,2,3)) )))'));Output:
MESHGEOM(PATCH(INDEXSURFACE Z (VERTEX(0 0 0,1 0 0,1 1 0,0 1 0),INDEX((2,3,0),(0,1,2)))))