Blender Git Loki

Sculpt: Allow non-manifold collapse

* This was always buggy, which is why
I have code that detects and snips off
non-manifold fins.
* Turns out it is more robust to simply allow
non-manifold collapses and clean up geometry
afterwards. IIRC this is how DynTopo (and the
paper it's based off of) originall worked.

Sculpt: bump subversion

Sculpt: enable dyntopo on paint brushes

* Paint brushes will now support
dyntopo if "dyntopo disabled"
(the one in their brush settings,
not the global setting in the
"Dynamic Topology" panel) is unchecked.
* Fixed dyntopo undo not properly handling
pushing more then one undo type.

Sculpt: fix gcc compiler error

This one is an actual error. I
went through the trouble of compiling
in a linux VM and still somehow managed
to miss it.

Also fix wrong range for normal_radius_factor.

Sculpt: fix symmetry bug and mesh filter
smooth improvements

* Fixed symmetry bug
* Exposed a few hard edge options to the mesh filter tool
* Updated default brushes inside of startup.blend.

Sculpt: add new bending constraint to cloth filter

Sculpt: experimental bending constraints for cloth
brush.

See "bending" checkmark in the cloth settings.

Sculpt: don't set strength to inherit from
scene defaults by default.

Sculpt: improve accuracy of tri in brush
test for dyntopo

Sculpt: fix sharp brush, new experimental
mode was being enabled when it
shouldn't be

Sculpt: fix broken jitter and smooth
stabilize brush settings.

Sculpt: Added a little brush icon tool slot
interface to mask expand in "selection"
mode.

Leftclick runs normal expand.
Shfit-leftclick subtracts from mask.
Pressing CTRL inverts adding/subtracting

Fix mask expand

Sculpt: various uv-related fixed

* The dyntopo collapse function now
properly snaps UVs, including at
island boundaries.
* PBVHTriBufs are now split by UVs
(and face sets); this turned out
to be surprising easy.
* Also fixed a few bugs relating to
hiding/revealing stuff.

Merge branch 'master' into sculpt-dev

Sculpt: Add plane mode for draw sharp brush

Sculpt: fix nasty radius symmetry bug

* Brush radius wasn't being calculated correctly if symmetry was on.
* Unnessed SCULPT_run_commandlist, it now calls
do_symmetrical_brush_actions instead of the reverse.
* Renamed MDynTopoVert to MSculptVert. Old name didn't
make sense given that all three PBVH types now use it.
Mercifully it's never saved in files, and even if it
somehow was saved the CD file loading code checks for
that.

Sculpt: fix multi-res crash

Sculpt: fix broken ray casting of original data in pbvh

Not sure if this ever worked.

Sculpt: Fixed a few sculpt color issues

* Fixed broken smear brush
* Tweaked ui defaults a bit