Oh, I am sorry again, I'd thought that you mean soft/hard edges not faces, I stupid! :\ Yeah there is must me way to gen those normals too.
On Tue, Nov 15, 2011 at 7:12 PM, Eugene Minov <minov....@gmail.com> wrote: > > > > >If it's not already available in the python API > > > > Hmm, I think not, as far as I can see in 'blender_python_reference_2_57' > and by searching in 'blender-2.60a' sources. I've found only two files in > sources with references to 'SMikkTSpaceContext' struct and > to 'genTangSpaceDefault' function: > - 'source/blender/blenkernel/intern/DerivedMesh.c' to get tangents for > using in GLSL, I think; > - 'source/blender/render/intern/source/convertblender.c' to get tangents > for render's needs. > But I not completely sure, I will look deeper. > > > > > >However, you'd need to supply support for normals as well since > > >at this point the python API only gives access to the unconditionally > > >averaged/smooth normals > > >at the vertices. Ie. the api doesn't take faces set to soft/hard into > > >account when submitting normals > > >back to the script. > > > > Yes, I was wondering about that when started to write my own exporter > since blender 2.49 :) > But after I've found an 'EdgeSplit' modifier, I used to to export my meshes > applied by it and to welding vertices and normals after. > > Maybe we'd can go a similar way and to provide tangents using averaged > normals only?, since soft/hard edge's flags is 'de-facto' uses in that > modifier only (as far as I know, even blender's render is not uses those > flags). > > As about realization, I think it may be some analogue to > the 'bpy.types.MeshTextureFace' class array, like 'MeshTangentFace' with > four tangent vectors and fSign values for each vertex per face in it. Or > with > indexes to already welded ones. > And generate data by request, in the 'Mesh.tangent_normals' accessor. > > Thanks. > > Eugene > > > On Tue, Nov 15, 2011 at 4:02 AM, Morten Mikkelsen <mikkels...@gmail.com>wrote: > >> > >> > >So why not to simply adding possibility for generate/access a tangent >> > >normals into the python api? >> > >> >> >> If it's not already available in the python API then I agree that it's a >> good idea. >> However, you'd need to supply support for normals as well since >> at this point the python API only gives access to the unconditionally >> averaged/smooth normals >> at the vertices. Ie. the api doesn't take faces set to soft/hard into >> account when submitting normals >> back to the script. >> _______________________________________________ >> Bf-committers mailing list >> Bf-committers@blender.org >> http://lists.blender.org/mailman/listinfo/bf-committers >> > > _______________________________________________ Bf-committers mailing list Bf-committers@blender.org http://lists.blender.org/mailman/listinfo/bf-committers