InputPoint.transformation http://code.google.com/intl/no/apis/sketchup/docs/ourdoc/inputpoint.html#transformation Gives you the transformation for the input point. Will probably be useful to you for converting between local and model co-ordinates.

Thank you for the review. You understand correctly and have verified what I was not sure about. I wanted a face to be created across sub components but it seems the face will only be created if the edges are in the same subcomponent. I will try to reform the component using rectangles to achieve the result I want to have. Thanks again for your input!