Le lundi 20 janvier 2014 21:48:12, xavier lhomme a écrit : > 3D engine doesn't like hole in a polygone. > A way to render such polygon is to link the outer ring and the inner ring. > (But it's better to use tesselation.)
Ah right tesselation would do it. > > for example if you have a rectangle ABCD and a triangle describing the hole > ( EFG) , you can create a polygone ABCDAEFGA Yes, but such description isn't compliant with OGC geometries. > > It's how I understand the question. I don't think you will find such > function in GEOS (or JTS) > > > 2014/1/20 Even Rouault <[email protected]> > > > Le lundi 20 janvier 2014 21:27:18, agerrius a écrit : > > > Hi all, > > > > > > Does OGR have any build in functionality to convert features with holes > > > into features without holes? I don't mean delete the inner rings, but > > > change the geometry so that it covers the same area with only the outer > > > ring. > > > > I'm afraid not to understand what you mean. What is the difference > > between deleting inner rings and "changing the geometry so that it > > covers the same area with only the outer ring" ? > > > > There's no one-line invocation for such functionnality. But it can be > > done with the OGR API and a few dozains lines of code. > > > > > I know GlobalMapper has such a function, but it would be useful if I > > > > could > > > > > perform it in my code directly with the OGR library. > > > > > > Thanks, > > > > > > Arno > > > > > > > > > > > > -- > > > > > View this message in context: > > http://osgeo-org.1560.x6.nabble.com/OGR-functionality-to-remove-holes-tp5 > > 0 > > > > > 99099.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 > > > > -- > > Geospatial professional services > > http://even.rouault.free.fr/services.html > > _______________________________________________ > > gdal-dev mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Geospatial professional services http://even.rouault.free.fr/services.html _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
