diff --git a/butils.py b/butils.py
index 3fe2098..11a30ca 100644
--- a/butils.py
+++ b/butils.py
@@ -138,6 +138,24 @@ def calc_tangent_on_bezier(bezier_point_1, bezier_point_2, t):
     ).normalized()
 
 
+# class TestCalcPoint():
+    # co: mathutils.Vector
+    # handle_left: mathutils.Vector
+    # handle_right: mathutils.Vector
+    # def __init__(self, co, handle_left=None, handle_right=None):
+        # self.co = co
+        # if handle_left is not None:
+            # self.handle_left = handle_left
+        # if handle_right is not None:
+            # self.handle_right = handle_right
+
+
+# a = TestCalcPoint(mathutils.Vector((0,0,0)), handle_right=mathutils.Vector((0,1,0)))
+# b = TestCalcPoint(mathutils.Vector((1,0,0)), handle_left=mathutils.Vector((1,1,0)))
+# c = TestCalcPoint(mathutils.Vector((0,0,0)), handle_right=mathutils.Vector((0,0,0)))
+# d = TestCalcPoint(mathutils.Vector((1,0,0)), handle_left=mathutils.Vector((1,0,0)))
+# calc_point_on_bezier(a,b,0.5)
+
 
 
 def align_rotations_auto_pivot(