bugfix + minor mathutils.Vector edits.

- multiplying a 2D vector by a 3x3 or 4x4 matrix would use un-initialized memory, now throw an exception.
- use more variable length array BLI_math functions.

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_math_vector.h b/source/blender/blenlib/BLI_math_vector.h
index 35b7939329a..5a5d518940d 100644
--- a/source/blender/blenlib/BLI_math_vector.h
+++ b/source/blender/blenlib/BLI_math_vector.h
@@ -176,6 +176,7 @@ void mul_vn_fl(float *array, const int size, const float f);
 void mul_vn_vn_fl(float *array_tar, const float *array_src, const int size, const float f);
 void add_vn_vn(float *array_tar, const float *array_src, const int size);
 void add_vn_vnvn(float *array_tar, const float *array_src_a, const float *array_src_b, const int size);
+void sub_vn_vn(float *array_tar, const float *array_src, const int size);
 void sub_vn_vnvn(float *array_tar, const float *array_src_a, const float *array_src_b, const int size);
 void fill_vni(int *array_tar, const int size, const int val);
 void fill_vn(float *array_tar, const int size, const float val);