[postgis-users] Convert Box3D to TIN geometries

[Felix Kunde]

Hi,
thought that's easy to do with the postgis_sfcgal extension, but no:
SELECT ST_Tesselate('BOX3D(0 0 0,1 1 1)'::box3d::geometry));
 
ERROR: Solid is invalid : PolyhedralSurface (shell) 0 is invalid: not connected : SOLID((((0/1 0/1 0/1,0/1 1/1 0/1,1/1 1/1 0/1,1/1 0/1 0/1,0/1 0/1 0/1)),((0/1 0/1 1/1,0/1 1/1 1/1,1/1 1/1 1/1,1/1 0/1 1/1,0/1 0/1 1/1)),((0/1 0/1 0/1,0/1 1/1 0/1,0/1 1/1 1/1,0/1 0/1
SQL Status:XX000

The polygons are not in the right order :-/
Also tried dumping and delaunay triangulation but yet not solution. Anyone else?

Cheers,
Felix



Gesendet: Dienstag, 17. Juli 2018 um 20:04 Uhr
Von: "Tom Kazimiers" <tom at voodoo-arts.net>
An: postgis-users at lists.osgeo.org
Betreff: [postgis-users] Convert Box3D to TIN geometries
Hi all,

I need to convert a lot of Box3D geometries to TIN geometries. Is there a way in PostGIS to do this without specifiying each triangle and vertex for the new TINs explicitly? Idealy, I would just be able to issue a simple update statement without needing to think about vertex order and triangle order.

Thanks,
Tom_______________________________________________ postgis-users mailing list postgis-users at lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/postgis-users