[gdal-dev] Call for discussion on RFC 64: Triangle, Polyhedral surface and TIN

Even Rouault even.rouault at spatialys.com
Tue Dec 6 08:21:46 PST 2016


This is a call to discuss the proposed RFC 64: Triangle, Polyhedral surface and TIN




As of now, the OGRGeometry class (the base class from which all the subtypes are derived) is 
limited to OGRCompoundCurve, OGRCircularString, OGRLinearRing, OGRMultiLineString, 
OGRMultiPoint, OGRMultiPolygon, OGRMultiCurve, OGRSimpleCurve, OGRCurvePolygon and 

This RFC addresses the addition of the following new geometries in OGRGeometry:
* Triangle - A subset of polygons, the fundamental difference is that it is made of 3 nodes 
only (actually 4, with the last one being the repetition of the first one) and ONLY ONE 
exterior boundary and NO interior polygons.
* PolyhedralSurface - A 3D figure made exclusively of Polygons.
* TriangulatedSurface - A subset of PolyhedralSurface; a 3D figure which consists exclusively 
of Triangles. 


I've rebased and extended the work done by Avyav during last GSoc on top of current trunk, 
where it passes our continuous integration tests. I think we should consider  merging it soon 
as it can easily rot if kept longer in a branch (the refresh from my previous branch dating to 
end of August was rather painful)


Spatialys - Geospatial professional services
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