Name
CG_Extrude — Extrude uma superfície a um volume relacionado
Synopsis
geometry CG_Extrude(geometry geom, float x, float y, float z);
Descrição
Availability: 3.5.0
This method needs SFCGAL backend.
This function supports 3d and will not drop the z-index.
This function supports Polyhedral surfaces.
This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).
Exemplos
As imagens 3D foram criadas usando o PostGIS xref linkend="ST_AsX3D"/> e interpretadas no HTML usando: X3Dom HTML Javascript rendering library.
SELECT ST_Buffer(ST_GeomFromText('POINT(100 90)'),
50, 'quad_segs=2'),0,0,30);
 Octágono original formado a partir do ponto buffering |
CG_Extrude(ST_Buffer(ST_GeomFromText('POINT(100 90)'),
50, 'quad_segs=2'),0,0,30);
 30 unidades expelidas do hexágono com Z produz uma PolyhedralSurfaceZ |
SELECT ST_GeomFromText('LINESTRING(50 50, 100 90, 95 150)')
 Linestring original |
SELECT CG_Extrude(
ST_GeomFromText('LINESTRING(50 50, 100 90, 95 150)'),0,0,10));
 Linestring expelida com Z produz uma PolyhedralSurfaceZ |