Fix Python ray-cast failing to check hit direction

2014-10-08 09:42:34 +02:00
parent 47b8bf591c
commit a550d913bc
1 changed files with 5 additions and 0 deletions
--- a/source/blender/python/mathutils/mathutils_geometry.c
+++ b/source/blender/python/mathutils/mathutils_geometry.c
@@ -149,6 +149,11 @@ static PyObject *M_Geometry_intersect_ray_tri(PyObject *UNUSED(self), PyObject *
 	/* calculate t, ray intersects triangle */
 	t = dot_v3v3(e2, qvec) * inv_det;

+	/* ray hit behind */
+	if (t < 0.0f) {
+		Py_RETURN_NONE;
+	}
+
 	mul_v3_fl(dir, t);
 	add_v3_v3v3(pvec, orig, dir);