Blender Git Commits

Cleanup: Comments, clang-format.

Remove unused uv vertex index offset.

Edit FaceElem list outside polygon creating code.

`new_faces` was a lie after it was extended. Better is all_faces.

Add newly creates faces to imported faces and dissolve edges.

The code so far imports triangles, but also fills holes.
Committing since it doesn't crash.

test file:

```
o plane_with_hole
v 2 2 0
v 2 -2 0
v -2 -2 0
v -2 2 0

v 1 1 0
v 1 -1 0
v -1 -1 0
v -1 1 0

f 4 1 2 3 4 8 5 6 7 8 4
```

Fix tessellate crash due to wrong Vector size.

Also fix crash due to out of bound vertex indices.

Commit as it is ngon-tessellate.

The code is totally untested and will very likely crash.

Cleanup: use const, remove single use variables.

Fix overlapping nodes in the nodetree.

Fix filepath being wrong in cases like `-bm 0 filepath`.

Use fallback value in out of range exception.

Silence normal being zero warnings in mesh validate.

Parse vertex normals: vn lines.

Still need to understand how it translates to the
normals seen in the viewport.

Decouple getting smooth groups from export parameters

Export vertex normals if smooth shading is enabled.

`s on/off` line will not be written if that is not checked in the
exporter parameters.

Move file open errors to constructors.

Add a public member function in MaterialWrap.

Cleanup : clang format; cout > cerr

Clean up: use const, header cleanup.

Also fix build issues that the last two commits introduced.

https://github.com/include-what-you-use/include-what-you-use

Skip parsing extra texture map options, move MTLWriter from Objects code.

Move MTL writer code near OBJ writer code.

Apply axes transform to exportable Nurbs.

Fix usemtl line not being written.

`==` ? `!=` : the bug.

`totface` ? `totpoly`: it was a mistake.

Rest is cleanup.