Hi Andrei, some good ideas there, it will probably be a while before I'll be able to really explore them though. Things involving a lot of UI tend to be very time consuming to implement well.

In the meantime, just to make sure you're aware, you are able to draw directly on planar surfaces in the 3D view just by snapping the points you're drawing onto the plane...

For example if you are drawing a circle you can snap the center of the circle onto any planar surface in the 3D view and the circle that is drawn will be oriented onto that plane, without needing to directly set the cplane as a separate step.


> Also it will relocate markers if surface was trimed.

Things like this that require various different commands like trim to also modify different lists of things are quite difficult to implement, just as a general note...

- Michael