Blender Git Loki

Bugfixes for Grease Pencil and the Image Editor (includes fix for #20921):

* Fixed crash with when/after undoing Grease Pencil sketches in the Image Editor. To get this working, I've had to sacrifice the backwards-compat loading for old .blend files from 2.49 which were using the same pointer as the new data (local data vs datablock data). If anyone has any ingenious hacks to fix this, go ahead, but otherwise, some caution is advised here...

* Grease Pencil block used for Image Editor instances can now be changed

* Enabled proper active polls on the advanced 3D-view projection methods for drawing. These are not valid in views other than the 3D-View, and so should not be shown as available for use elsewhere (though may still be shown just so that users know what mode an 'imported' datablock may be using).

* Enabled proper updates for Grease Pencil editing in the Image Editor. Was missing notifiers for this stuff.

* When drawing in the Image Editor with no image active, the system now (quietly) switches to using screen-space 'view' vs 'cursor' space for the strokes, since the previous behaviour was confusing with strokes disappearing after drawing them. IMO this is a much better option than the confusion that occurred before, even though it does change the user's settings under their feet!

Fix [#21886] OBJ export crashes if attempted while in edit mode

Didn't crash for me, but did export incorrectly since editmode changes weren't flushed.
Fixed this by setting all exporters to go back to object mode before exporting.

Also cleaned up some naming in exporter creator strings, it's "Blender" not "Blender3D".

Fix [#21861] hemi light and shadow only maerial

Made Shadow only materials render as completely transparent when there are no
shadow casting lamps - more logical than solid black.

Fix [#21895] Incorrect calculations for measurement system

3d view grid scale text description wasn't using unit scale correctly

Fix [#21912] knife and subdivide tools do not split edges properly

Added back the 'corner cut pattern' as an operator property for subdivide operator.
Not added for knife yet, since operator redo doesn't seem to be working at all -
already logged in the tracker.

Durian Feature Request for Graph Editor: Border Select (optionally) considers handles

Early when implementing the Graph Editor in 2.5, a key complaint that was levelled at the old 'IPO Editor' was that it was a constant annoyance that adjacent handles were getting selected in addition to the keyframes, when only the keyframes were intended. I solved this by making this default to only selecting keyframes and ignoring the handles, but this means that it isn't possible to batch move several handles at once.

I've now improved this situation by adding an option to the border select operator (involved using Ctrl-B instead of B) which makes the handles get treated separately (as if they were separate verts, as in 2.4x). The default is still to only select keyframes, to have consistency with the DopeSheet...

Also performed some more renaming work in the code...

Missed one of the tweak operator for nodes when adding new param.

Animation fixup squad to the rescue!

R 27991 broke all script-based Keying Set support, including all the Built-In Keying Sets. This meant that it nearly impossible to still keyframe anything (there are other less convenient ways, but none work quite as well).

[#21910] Add Current Time to Render Stamps
by Harley Acheson (harley)

note from the submission
-snip-
While in there I removed the Win32 conditionals that made "_strdate" used to
get date on Windows. "localtime" works fine on Windows so the results are consistent on all platforms.

Merged changes in the trunk up to revision 27992.

Commented out some unimplemented operators, avoids gray text in the UI
Also I noticed there's a check on strip.type == 'EFFECT', which can never be true because strip.type actually contains the type of effect, e.g. "GLOW", "ADD" etc. Not a big problem currently because it's not used.

make keying set path functions members of the paths collection

added negative bounds checks so drawing text into a buffer wont crash.

pep8 cleanup

no functional changes. use sizeof() and MAXFRAME

[#21867] Add rotate option to blf module
by Dan Eicher (dna)

Fluid physics for particles by Raul Fernandez Hernandez (Farsthary) and Stephen Swhitehorn:

This patch add SPH (Smoothed Particle Hydrodynamics)fluid dynamics to the
blender particle system. SPH is an boundless Lagrangian interpolation
technique to solve the fluid motion equations.

From liquids to sand, goo and gases could be simulated using the particle
system.

It features internal viscosity, a double density relaxation that accounts
for surface tension effects, static internal springs for plastic fluids,
and buoyancy for gases.

---------------------------------------

This is a commit of the core fluid physics. Raul will work on proper
documentation soon and more features such as surface extraction from
the particle point cloud and increasing stability by sub-frame calculations
later.

2.5 Preview Render:
* Converted Type Buttons (Flat, Cube, Monkey etc.) in Material Preview to RNA.
* "Alpha" option in texture Preview Render is back!

Use DerivedMesh->getNumFaces function in drawSolidSelect() if curve
object has got derived mesh.

Fix #21850: Modifier applied to surface doesnt work when only a curve.

I removed 3D flag checking for DL_POLY displists in nurbs-to-mesh conversion
function -- DL_POLY displist should be always converted to edge loop.
DL_POLY which should be converted to something else is odd i think.

This commit also fixes trouble cyclic surface curve to mesh conversion problem.