lerp operator order switched

direct/src/showbase/PythonUtil.py

@@ -1459,7 +1459,7 @@ def lerp(v0, v1, t):
     returns a value lerped between v0 and v1, according to t
     t == 0 maps to v0, t == 1 maps to v1
     """
-    return v0 + (t * (v1 - v0))
+    return v0 + ((v1 - v0) * t)
 
 def average(*args):
     """ returns simple average of list of values """