Blender Git Commits

Review update: fix UI text; add comments.

Variable type change for `forward_axis` and `up_axis`.

Rename File menu item text.

Rename files to shorten the name, remove ex/im.

Two letter abbreviations were not deemed good.

Cleanup: Add description, rename conflicting name

max/min are also functions, so better not keep them as variables.
No functional change.

Add transform options in the importer UI.

Fix minor bugs in logging.

Merge branch 'master' into soc-2020-io-performance

Fix face element import: index out of range crash

Fix build error after merge; add logging.

Fix typo in the {rB0aeb338d1952725cfb8}: really turn off tessellation
this time.

Merge branch 'master' into soc-2020-io-performance

Use unique_ptr for MTLMaterials Map.

Also, early return in `tessellate_polygons`. Turn off tessellation
for a while till valid/invalid options are added in parsing.

Fix ngon_tessellate filling the holes.

Fix several issues from the commit {rBefab0bc704ece3a}.
Previously, `ngon_tessellate` was filling the holes instead of
triangulating around them by using the "triangle-fan" method.

Now it triangulates around the holes and doesn't fill them.

Read multiple lines with \n line breaks.

Cleanup: Mark unused variables.

Silence mesh_validate verbose warnings.

Silence some warnings; minor changes.

Since `map_bump_strength` was changed to have a
leading space, length should be increased too.

Pass by reference to avoid copy.

Release resources if not moved by the owner in Mesh and
Curve creation code.

Cleanup: add r_ prefix.

No functional change.

r_offsets -> r_offset.

Use blender::StringRef instead of std::string_view.

Context:
{rB9616e2ef78f0}
{rBc521b69ffb68}

In MTL parser, `Vector.first_index_of_try` result was being compared
with `string::npos` which gave correct results since `npos` is -1,
but is wrong semantically. So fix it.

Use remove_prefix for easy transition to StringRef.

The relevant search functionality was added to StringRef in
{rBc521b69ffb68}

Move object creation code from constructor.

Also add destructors with assert in case caller doesn't
own the object.

Rename `blender_object_` to `mesh_object_` to be like
`curve_object_`.