@unknownuser said: Postby tt_su » Tue Mar 18, 2014 8:08 am When you get identity transformation, did you check the depth? Maybe the position of IP is coming from an inferred point and therefore isn't coming from inside the group/component you click on? The bug reported by Freddo a few messages above seems to be related to inference points indeed. I always get the identity from ip.transformation when the position of the cursor is along an inference line. Besides that, along inference lines, the ip.depth equals 0 and the ip.degree_of_freedom equals 1 independent whether a face was picked by the InputPoint or not. Even along inference lines, the InputPoint position seems to be correct. Update: Along inference lines, the InputPoint position seems to be the position of the point on the inference line and not of the cursor position. Ronaldo