Blender Git Loki

New hair child options:
* Renamed children to "simple" and "interpolated" as this is
easier to explain and more descriptive than "from particles"
and "from faces".
* Also shuffled the child ui around a bit to make it clearer.
* Child seed parameter allows to change the seed for children
independent of the main seed value.
* Long hair mode for interpolated children:
- Making even haircuts was impossible before as the child
strand lengths were even, but their root coordinates were
not similar in relation to the parent strands.
- The "long hair" option uses the tips of the parent strands
to calculate the child strand tips.
* Hair parting options:
- Hair parting can now be calculated dynamically on the fly
when in 2.49 there was a cumbersome way of using emitter mesh
seams to define parting lines.
- For long hair parting can be created by a tip distance/root
distance threshold. For example setting the minimum threshold
to 2.0 creates partings between children belonging to parents
with tip distance of three times the root distance
((1+2)*root distance).
- For short hair the parting thresholds are used as angles
between the root directions.
* New kink parameters:
- Kink flatness calculates kink into a shape that would have
been achieved with an actual curling iron.
- Kink amplitude clump determines how much the main clump value
effects the kink amplitude.
- The beginning of kink is now smoothed to make the hair look
more natural close to the roots.
* Some bugs fixed along the way too:
- Child parent's were not determined correctly in some cases.
- Children didn't always look correct in particle mode.
- Changing child parameters caused actual particles to be
recalculated.
* Also cleaned up some deprecated code.

All in all there should be no real changes to how old files look
(except perhaps a bit better!), but the new options should make
hair/fur creation a bit more enjoyable. I'll try to make a video
demonstrating the new stuff shortly.

cmake: share the DNA_*.h list definition between makesrna and makesdna

Fix for [#25526] Inmediate crash when changing amount of particles in a particle system
* Point cache index array doesn't necessarily have all particles if the particles were re-allocated recently.

Fix for [#25506] Hair showing up in places not assigned by a weightmap
* Two separate bugs, with very similar symptoms.
* The distribution binary search didn't work correctly in cases where there were a lot of faces with 0 weights.
* Maximum distribution sum should have been exactly 1, but due to the wonderful nature of floats this wasn't the case at all.

patch [#25440] Object.vertex_group fixin'
from Dan Eicher (dna)

From the tracker (with minor edits)
========================

cube = bpy.data.objects['Cube']
foo = cube.vertex_groups.new('foo')
foo.add([1,3,5,7], 1.0, 'ADD')

for i in range(len(cube.data.vertices)):
try:
weight = foo.weight(i)
print('vert: %i weight: %f' % (i, weight))
except:
pass

foo.remove([1,3])

cube.vertex_groups.remove(foo)

another error in commit r34143, was using the define's 'BLEN' & 'DER_' however the latter is incorrect since DER- is used for 64bit blend files.
removed the define.

fix for error in own commit r34143

- cmake use execute_process, exec_program is deprecated.
- game engine builds without python again.

bugfix [#25457] Lack of update on undoing a lattice rig

patch [#25490] Fix for [#22096] Blender tries to open non-blend file
from Alexander Kuznetsov (alexk) with edits.

From the report:
Blender assumed that all files are .blend as retval = 0;

Now retval is initialized as file cannot be open (-1) for gzopen fail and directory case
retval = -2; is defined for not supported formats
This must be assigned before #ifdef WITH_PYTHON because this part can be missing
Finally retval = 0; if it is a .blend file

---
also made other edits.

- exotic.c's blend header checking was sloppy, didn't check data was actually read, only checked first 4 bytes and had a check for "blend.gz" extension which is unnecessary.
- use defines to help readability for BKE_read_exotic & BKE_read_file return values.
- no need to check for a NULL pointer before calling BKE_reportf(). (will just print to the console)
- print better reports when the file fails to load.

incorrectly documented return type

Fix/add OSX style text editing shortcuts to default keymap

py/rna api speedup for collection slicing in all cases, rather then having an exception for [:].
- avoid looping over the entire collection unless a negative index is used.
- dont use the get index function for building the slice list, instead loop over the collection until the stop value.

bugfix [#25519] particlesystem, type hair, hair dynamics enabled: crash with amount 0

bugfix [#25519] particlesystem, type hair, hair dynamics enabled: crash with amount 0

fix [#25520] crash when closing the properties panel in uv/image editor
don't draw the image if the size is 0.

Crash was actually an assert() so debug builds only, replace assert() with BKE_assert() so crash is opt in build option.

bugfix [#25522] Export to X3D is missing ImageTexture and TextureTransform for plane with image texture
- tile option was broken.
- added basic export of texture/mtex transformation.
- recent mesh update broke material/image export with no UVs

Todo items:

- Toobar views were reset on hide/unhide. Now they keep the view
and zoom level.
- Added operator to delete all unused 'space data', this to make
clean startup.blend files, remove unused editors, and to be
able to test starting defaults for editors.
No hotkey, use search for "Clean-up space-data"

Todo item:

Compositor: Texture Node now behaves like an image.
- Image always in render output size
- Buffer outputs RGBA and Value both supported
- Works for filter and blur and scaling too.
- Mixing 2 textures works

Implementation note:
The texture node was meant to be 'procedural', not a buffer
but a color-sample method. Unfortunately the node editor
didn't support this well, blur/filter/scale ignored it too.

For now, its better to drop this procedural concept, then
things work at least as expected. :)

Bug fix:

On texture-space transform, pressing Rkey crashed.
Now it refuses to enter rotation mode. :)