Adding new image texture to Meshes didn't initialize UVs to 0-1 default.
This makes initial display of textures on meshes not work.
This fixes my favorite demo case: Open Blender, drop image from desktop on cube.
reported as [#29376] BMESH_TODO: remove tessface CD_ORIGINDEX layer
for a single mesh there could be 3 origindex mappings stored, one on the polygons and 2 on the tessfaces.
(CD_POLYINDEX and CD_ORIGINDEX).
as Andrew suggests, now tessfaces (which are really a cache of polygons), using origindex to point to polygons on
the same derived mesh, and polygons only store the original index values.
fix pose-group-sort and pose-group-moving being disabled for pinned poses.
also fix for own missing NULL check for pose mask clear which would crash when run without an active object
updating data was only being done on the active object but sticly was being calculated for the selection.
split this into 2 operators, one that works on the selection and another that operates on the active object - so we can have a button in the mesh panels that calculates sticky.
also note that there was no way to calculate sticky from the UI - perhaps this feature should die a quiet death?
anyway - it works better then it used to for now.
currently can remove sticky/mask/skin vertex layers.
regarding the skin layer - while adding and removing the modifier normally works fine, its not 100% reliable since the mesh may be linked into another scene, or be a linked duplicate and the object with the modifier deleted.
- updating normals in py/api's mesh.transform() wasn't working and gave annoying print, disable this, script authors can call calc_normals explicitly if they need.
- tessface vertex color had the wrong sized array passing to rna_iterator_array_begin
- re-calculating tessface's would clear them if they were already created (own mistake)
- ED_mesh_color_add initialized tessface vertex colors from the loop color array
also made rna's mesh.tessface_vertex_colors.new() work like tessface_uv_textures.new()
where layers can be added as long as polygons are not present.
mesh.calc_normals() wasnt calculating vertex normals (only face normals),
now only calculate vertex normals.
added a define incase we want to have poly normals back again.
* calculate vertex normals (previously was calculating face normals only)
* clear tessfaces unless theres an argument to build them. since no tessfaces is the default state right now.
* if convert_mfaces_to_mpolys() runs, dont calculate edges, since it already does that.
