ST_Extrude
Name
ST_Extrude — Extrude a surface to a related volume
Synopsis
geometry
ST_Extrude
(
geometry
geom
, float
x
, float
y
, float
z
)
;
Description
Availability: 2.1.0
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).
Examples
3D images were generated using PostGIS ST_AsX3D and rendering in HTML using X3Dom HTML Javascript rendering library .
|
SELECT ST_Buffer(ST_GeomFromText('POINT(100 90)'),
50, 'quad_segs=2'),0,0,30);
Original octagon formed from buffering point |
ST_Extrude(ST_Buffer(ST_GeomFromText('POINT(100 90)'),
50, 'quad_segs=2'),0,0,30);
Hexagon extruded 30 units along Z produces a PolyhedralSurfaceZ |
|
SELECT ST_GeomFromText('LINESTRING(50 50, 100 90, 95 150)')
Original linestring |
SELECT ST_Extrude(
ST_GeomFromText('LINESTRING(50 50, 100 90, 95 150)'),0,0,10));
LineString Extruded along Z produces a PolyhedralSurfaceZ |