Armature CrazySpace Improvement

===============================

An improved CrazySpace correction is now used for Armature modifiers that use
vertex groups, and that are the first enabled modifiers in the stack. This is
a a specific case, but also a common one.

http://www.blender.org/development/current-projects/changes-since-244/skinning/

Implementation Notes:

- The quaternion crazyspace correction is still used for modifiers other than
  the armature modifier.
- Modifiers can now provide a deform matrix per vertex to be used for
  crazyspace correction, only the armature modifier implements this now.

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_arithb.h b/source/blender/blenlib/BLI_arithb.h
index a732f09ca58..7a1bedf5c14 100644
--- a/source/blender/blenlib/BLI_arithb.h
+++ b/source/blender/blenlib/BLI_arithb.h
@@ -217,6 +217,8 @@ void Mat3MulVecfl(float mat[][3], float *vec);
 void Mat3MulVecd(float mat[][3], double *vec);
 void Mat3TransMulVecfl(float mat[][3], float *vec);
 
+void Mat3AddMat3(float m1[][3], float m2[][3], float m3[][3]);
+void Mat4AddMat4(float m1[][4], float m2[][4], float m3[][4]);
 
 void VecUpMat3old(float *vec, float mat[][3], short axis);
 void VecUpMat3(float *vec, float mat[][3], short axis);