| SFCGAL Functions |
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postgis_sfcgal_version
3d
()
Returns the version of SFCGAL in use |
|
postgis_sfcgal_full_version
3d
()
Returns the full version of SFCGAL in use including CGAL and Boost versions |
|
ST_3DArea
mm
3d
(geom1)
Computes area of 3D surface geometries. Will return 0 for solids. |
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ST_3DConvexHull
3d
(geom1)
Computes the 3D convex hull of a geometry. |
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ST_3DIntersection
mm
3d
(geom1, geom2)
Perform 3D intersection |
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ST_3DDifference
mm
3d
(geom1, geom2)
Perform 3D difference |
ST_3DUnion
mm
3d
Perform 3D union.
- geom1, geom2
- g1field agg
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ST_AlphaShape
(geom, alpha, allow_holes = false)
Computes an Alpha-shape enclosing a geometry |
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ST_ApproximateMedialAxis
3d
(geom)
Compute the approximate medial axis of an areal geometry. |
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ST_ConstrainedDelaunayTriangles
3d
(g1)
Return a constrained Delaunay triangulation around the given input geometry.
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ST_Extrude
3d
(geom, x, y, z)
Extrude a surface to a related volume |
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ST_ForceLHR
3d
(geom)
Force LHR orientation |
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ST_IsPlanar
3d
(geom)
Check if a surface is or not planar |
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ST_IsSolid
3d
(geom1)
Test if the geometry is a solid. No validity check is performed. |
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ST_MakeSolid
3d
(geom1)
Cast the geometry into a solid. No check is performed. To obtain a valid solid, the input geometry must be a closed Polyhedral Surface or a closed TIN. |
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ST_MinkowskiSum
(geom1, geom2)
Performs Minkowski sum |
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ST_OptimalAlphaShape
(geom, allow_holes = false, nb_components = 1)
Computes an Alpha-shape enclosing a geometry using an "optimal" alpha value. |
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ST_Orientation
3d
(geom)
Determine surface orientation |
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ST_StraightSkeleton
3d
(geom)
Compute a straight skeleton from a geometry |
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ST_Tesselate
3d
(geom)
Perform surface Tesselation of a polygon or polyhedralsurface and returns as a TIN or collection of TINS |
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ST_Volume
mm
3d
(geom1)
Computes the volume of a 3D solid. If applied to surface (even closed) geometries will return 0. |