Rename Vec3ToTangent VecBisect3, since that's what it does.

2 files changed, 5 insertions, 6 deletions

diff --git a/source/blender/blenlib/BLI_arithb.h b/source/blender/blenlib/BLI_arithb.h
index 63b351016d4..86b626dabdf 100644
--- a/source/blender/blenlib/BLI_arithb.h
+++ b/source/blender/blenlib/BLI_arithb.h
@@ -270,7 +270,7 @@ void AxisAngleToQuat(float *q, float *axis, float angle);
 void RotationBetweenVectorsToQuat(float *q, float v1[3], float v2[3]);
 void vectoquat(float *vec, short axis, short upflag, float *q);
 
-void Vec3ToTangent(float *v, float *v1, float *v2, float *v3);
+void VecBisect3(float *v, float *v1, float *v2, float *v3);
 float VecAngle2(float *v1, float *v2);
 float VecAngle3(float *v1, float *v2, float *v3);
 float NormalizedVecAngle2(float *v1, float *v2);
diff --git a/source/blender/blenlib/intern/arithb.c b/source/blender/blenlib/intern/arithb.c
index 970d8f7d0de..c20794953b9 100644
--- a/source/blender/blenlib/intern/arithb.c
+++ b/source/blender/blenlib/intern/arithb.c
@@ -2969,17 +2969,16 @@ void VecRotToQuat( float *vec, float phi, float *quat)
 	}
 }
 
-/* get a direction from 3 vectors that wont depend
- * on the distance between the points */
-void Vec3ToTangent(float *v, float *v1, float *v2, float *v3)
+/* Returns a vector bisecting the angle at v2 formed by v1, v2 and v3 */
+void VecBisect3(float *out, float *v1, float *v2, float *v3)
 {
 	float d_12[3], d_23[3];
 	VecSubf(d_12, v2, v1);
 	VecSubf(d_23, v3, v2);
 	Normalize(d_12);
 	Normalize(d_23);
-	VecAddf(v, d_12, d_23);
-	Normalize(v);
+	VecAddf(out, d_12, d_23);
+	Normalize(out);
 }
 
 /* Return the angle in degrees between vecs 1-2 and 2-3 in degrees