fixed another bug of the collision detection code (due to using int instead of float)

git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@752 bbaffbd6-741e-11dd-a85d-61de82d9cad9

src/pycam/Geometry/utils.py

@@ -47,5 +47,5 @@ else:
 if _use_precision:
     number = lambda value: decimal.Decimal(str(value))
 else:
-    number = lambda value: value
+    number = lambda value: float(value)