LDCad 1.4 (win+linux)

[Roland Melkert]

Sorry for late reply, I missed you're post as I was in the process of posting myself

This seems interesting to me: is there an easy way to figure out from which direction the part shall appear?

You mean while using a falling bricks step to step animation? I think the easiest way would be to determine the target locations distances to the model's 6 bounding box planes. And let the part 'fall' into the model from the closest side.

Although it might also depend on the theme as with creator etc it's probably ok to always let new things drop in from the top (-y).