Even Rouault-2 wrote > Hi, > > This is a call to discuss the proposed RFC 64: Triangle, Polyhedral > surface and TIN > > https://trac.osgeo.org/gdal/wiki/rfc64_triangle_polyhedralsurface_tin > > ~~~~~
I am wondering this part: "GEOS methods are still used in some cases, but with the following limitations - a Triangle is converted to a Polygon with one exterior ring; Polyhedral Surfaces and Triangulated Surfaces are converted to MultiPolygons?. (each Triangle in a Triangulated Surface is converted to a Polygon as described previously)" Does it mean presenting a TIN with two triangles as something like As far as I know such multipolygon is not valid accorfing to the Simple feature specification where "boundaries and may touch at only a finite number of Points". Valid presentation would probably be to wrap polygons into GeometryCollection. Is GEOS used in a relaxed way so that shared parts of boundaries in MultiPolygons do not throw an error? -Jukka Rahkonen- -- View this message in context: http://osgeo-org.1560.x6.nabble.com/gdal-dev-Call-for-discussion-on-RFC-64-Triangle-Polyhedral-surface-and-TIN-tp5298840p5298990.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
