Hi Andrei,

> Have no Idea how to make it precise, just do not know logic that you are
> going to implement.

I don't know either yet, it's a kind of tricky area because it might involve different options for how the curve follows along the surface... That is something that I'd like to look into in the future though, it seems like it would be a kind of broader solution.


> Another Thing that is reaaly needed is the ability to move Cplane picker! It will be
> very usefull whe drawing on non planar surfaces!!! For example I alwas need to move
> picker abit forward from sruface. This feature would be greate!

You can do this currently - after you place the cplane picker, you can drag on the origin point of it to relocate it, and if you have on straight snap you will be able to track along the surface normal for that relocation as well...

- Michael