BLI_math: add mat3_normalized_to_* functions

Many uses of matrices for rotation keep them normalized,
so no need to normalize each time.

1 files changed, 6 insertions, 6 deletions

diff --git a/source/blender/blenlib/intern/math_matrix.c b/source/blender/blenlib/intern/math_matrix.c
index 4bf6d162970..19d116928fd 100644
--- a/source/blender/blenlib/intern/math_matrix.c
+++ b/source/blender/blenlib/intern/math_matrix.c
@@ -1549,7 +1549,7 @@ void mat4_to_loc_quat(float loc[3], float quat[4], float wmat[4][4])
 		negate_m3(mat3_n);
 	}
 
-	mat3_to_quat(quat, mat3_n);
+	mat3_normalized_to_quat(quat, mat3_n);
 	copy_v3_v3(loc, wmat[3]);
 }
 
@@ -1557,7 +1557,7 @@ void mat4_decompose(float loc[3], float quat[4], float size[3], float wmat[4][4]
 {
 	float rot[3][3];
 	mat4_to_loc_rot_size(loc, rot, size, wmat);
-	mat3_to_quat(quat, rot);
+	mat3_normalized_to_quat(quat, rot);
 }
 
 /**
@@ -1692,8 +1692,8 @@ void blend_m3_m3m3(float out[3][3], float dst[3][3], float src[3][3], const floa
 	mat3_to_rot_size(drot, dscale, dst);
 	mat3_to_rot_size(srot, sscale, src);
 
-	mat3_to_quat(dquat, drot);
-	mat3_to_quat(squat, srot);
+	mat3_normalized_to_quat(dquat, drot);
+	mat3_normalized_to_quat(squat, srot);
 
 	/* do blending */
 	interp_qt_qtqt(fquat, dquat, squat, srcweight);
@@ -1715,8 +1715,8 @@ void blend_m4_m4m4(float out[4][4], float dst[4][4], float src[4][4], const floa
 	mat4_to_loc_rot_size(dloc, drot, dscale, dst);
 	mat4_to_loc_rot_size(sloc, srot, sscale, src);
 
-	mat3_to_quat(dquat, drot);
-	mat3_to_quat(squat, srot);
+	mat3_normalized_to_quat(dquat, drot);
+	mat3_normalized_to_quat(squat, srot);
 
 	/* do blending */
 	interp_v3_v3v3(floc, dloc, sloc, srcweight);