1 files changed, 11 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/math_geom_inline.c b/source/blender/blenlib/intern/math_geom_inline.c
index 44b17681540..68a2e68db4f 100644
--- a/source/blender/blenlib/intern/math_geom_inline.c
+++ b/source/blender/blenlib/intern/math_geom_inline.c
@@ -199,6 +199,17 @@ MINLINE int axis_dominant_v3_single(const float vec[3])
 	       ((y > z) ? 1 : 2));
 }
 
+/* the dominant axis of an orthogonal vector */
+MINLINE int axis_dominant_v3_ortho_single(const float vec[3])
+{
+	const float x = fabsf(vec[0]);
+	const float y = fabsf(vec[1]);
+	const float z = fabsf(vec[2]);
+	return ((x < y) ?
+	       ((x < z) ? 0 : 2) :
+	       ((y < z) ? 1 : 2));
+}
+
 MINLINE int max_axis_v3(const float vec[3])
 {
 	const float x = vec[0];