CG_Triangulate — Triangulates a polygonal geometry
geometry CG_Triangulate( geometry geom );
Triangulates a polygonal geometry.
Performed by the SFCGAL module
                 
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                 NOTE: this function returns a geometry representing the triangulated result.  | 
            
Availability: 3.5.0
            
 Questo metodo richiede il backend SFCGAL. 
SELECT CG_Triangulate('POLYGON((0.0 0.0,1.0 0.0,1.0 1.0,0.0 1.0,0.0 0.0),(0.2 0.2,0.2 0.8,0.8 0.8,0.8 0.2,0.2 0.2))');
                cg_triangulate
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                TIN(((0.8 0.2,0.2 0.2,1 0,0.8 0.2)),((0.2 0.2,0 0,1 0,0.2 0.2)),((1 1,0.8 0.8,0.8 0.2,1 1)),((0 1,0 0,0.2 0.2,0 1)),((0 1,0.2 0.8,1 1,0 1)),((0 1,0.2 0.2,0.2 0.8,0 1)),((0.2 0.8,0.8 0.8,1 1,0.2 0.8)),((0.2 0.8,0.2 0.2,0.8 0.2,0.2 0.8)),((1 1,0.8 0.2,1 0,1 1)),((0.8 0.8,0.2 0.8,0.8 0.2,0.8 0.8)))
                (1 row)
      CG_ConstrainedDelaunayTriangles, ST_DelaunayTriangles, ST_TriangulatePolygon