it seems to me that currently shrink wrap can only use the global orientation. Would it be very difficult to make it use also local orientations?
The reason why I ask is because in Alias Automotive to project lets say a headlight design I simply create a construction plane with the drawing on it and then add a project command and add a projection direction like a vector. The vector works like local orientation.
This vector I tell the project command to use.
In my Blender model I can only create my objects top left right etc and project along xyz and often that works but not really always. The front lights for example are projected right from the front along the y axis and not from like a 3/4 like view.
The problem is that often when your projected geometry flows over a tangent surface you get extreme distortions and it is hard to control logically.