Math Lib: rotate matrix cleanup

- Remove 'rotate_m2', unlike 'rotate_m4' it created a new matrix
  duplicating 'angle_to_mat2' - now used instead.
  (better avoid matching functions having different behavior).

- Add 'axis_angle_to_mat4_single',
  convenience wrapper for 'axis_angle_to_mat3_single'.

- Replace 'unit_m4(), rotate_m4()' with a single call to 'axis_angle_to_mat4_single'.

1 files changed, 2 insertions, 1 deletions

diff --git a/source/blender/blenlib/BLI_math_rotation.h b/source/blender/blenlib/BLI_math_rotation.h
index 24c20ee7b50..d60be30e10d 100644
--- a/source/blender/blenlib/BLI_math_rotation.h
+++ b/source/blender/blenlib/BLI_math_rotation.h
@@ -122,8 +122,9 @@ void mat3_to_axis_angle(float axis[3], float *angle, float M[3][3]);
 void mat4_to_axis_angle(float axis[3], float *angle, float M[4][4]);
 void quat_to_axis_angle(float axis[3], float *angle, const float q[4]);
 
-void axis_angle_to_mat3_single(float R[3][3], const char axis, const float angle);
 void      angle_to_mat2(float R[2][2], const float angle);
+void axis_angle_to_mat3_single(float R[3][3], const char axis, const float angle);
+void axis_angle_to_mat4_single(float R[4][4], const char axis, const float angle);
 
 void axis_angle_to_quat_single(float q[4], const char axis, const float angle);