Re: [OSGeo-Discuss] TIN file formats
On Wednesday, 12 February 2020 06.35.27 EST Martin Dobias wrote: > Unfortunately there is no mailing list yet - but feel free to open new > issue(s) at the github repo and we can discuss there: > https://github.com/lutraconsulting/MDAL/issues That isn't right either. I'm not reporting a bug or asking for a feature; I'm asking for help understanding the code so that I can add a feature. Pierre -- La sal en el mar es más que en la sangre. Le sel dans la mer est plus que dans le sang. ___ Discuss mailing list Discuss@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] TIN file formats
Hi Pierre On Wed, Feb 12, 2020 at 12:07 PM Pierre Abbat wrote: > > On Monday, 10 February 2020 04.29.37 EST Martin Dobias wrote: > > MDAL stores TIN as a vector of vertices (XYZ) and a vector of faces > > (where each face is a vector of indices of vertices). There is no > > topological representation like half-edge data structure as this has > > not been needed so far (the library so far has been mostly used for > > rendering, deriving datasets and conversion between formats). MDAL now > > supports vertex and face iterators, so drivers can use whatever > > representation they want (including not keeping the mesh in memory at > > all) as long as they can provide those iterators. > > Looks like I need more help than belongs on the discuss list. Is there a > mailing list for MDAL? Unfortunately there is no mailing list yet - but feel free to open new issue(s) at the github repo and we can discuss there: https://github.com/lutraconsulting/MDAL/issues Regards Martin ___ Discuss mailing list Discuss@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] TIN file formats
On Monday, 10 February 2020 04.29.37 EST Martin Dobias wrote: > MDAL stores TIN as a vector of vertices (XYZ) and a vector of faces > (where each face is a vector of indices of vertices). There is no > topological representation like half-edge data structure as this has > not been needed so far (the library so far has been mostly used for > rendering, deriving datasets and conversion between formats). MDAL now > supports vertex and face iterators, so drivers can use whatever > representation they want (including not keeping the mesh in memory at > all) as long as they can provide those iterators. Looks like I need more help than belongs on the discuss list. Is there a mailing list for MDAL? Bezitopo and PerfectTIN, from which I'll be porting the TIN read/write routines, use a sort of winged-edge data structure. But the points, edges, and triangles are held in STL maps, which have to be in memory. Pierre -- When a barnacle settles down, its brain disintegrates. Já não percebe nada, já não percebe nada. ___ Discuss mailing list Discuss@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/discuss
