[geos-devel] GEOSConstrainedDelaunayTriangulation

Darafei "Komяpa" Praliaskouski me at komzpa.net
Thu Sep 23 14:38:21 PDT 2021


The interesting one is to get a CDT of a collection of linestrings with
Z(M) for interpolation - mainly for creating isochrones from time annotated
road maps. This is available in SFCGAL and requires pre-noded input. Can
this function be adjusted for feature parity with SFCGAL?

Additionally, integrating this into PostGIS it would be nice to get a TIN.

On Fri, Sep 24, 2021 at 12:20 AM Paul Ramsey <pramsey at cleverelephant.ca>

> FYI on a big new port dropping from JTS today. Maybe Martin can share some
> pictures.
>   - CAPI: GEOSConstrainedDelaunayTriangulation, builds a constrained
> triangulation
>           of an input Polygon or MultiPolygon, returning a
> GeometryCollection(Polygon)
>           of the triangles.
> https://github.com/libgeos/geos/commit/896af228fb27076bdd7f0529d55b3e79e3f10191
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