ST_MeshFrommeshGeom-PolarDB(PolarDB)-阿里云帮助中心

Constructs an sfmesh object from a meshgeom object.

Syntax

sfmesh ST_MeshFromMeshGeom(meshgeom geom);

Parameters

Parameter	Description
`geom`	The `meshgeom` object to convert.

Description

ST_MeshFromMeshGeom converts a meshgeom object into an sfmesh object. It is equivalent to the explicit cast meshgeom::sfmesh.

Example

SELECT ST_AsEWKT(
    ST_MeshFromMeshGeom(
        'MESHGEOM(PATCH(INDEXSURFACE(VERTEX(0 0 2,0 10 3,10 10 1,10 0 1),INDEX((0,1,2),(1,2,3)))))'::meshgeom
    )
);

Output:

{"version" : 1, "root" : 0, "meshgeoms" : ["MESHGEOM(PATCH(INDEXSURFACE(VERTEX(0 0 2,0 10 3,10 10 1,10 0 1),INDEX((0,1,2),(1,2,3)))))"], "primitives" : [{"meshgeom" : 0}], "nodes" : [{"primitive" : 0}]}