I've been learning Zbrush recently and have gotten used to projective curve brushes.

https://youtu.be/U0-fzpIzC3Y?t=83

Here is an example of the curve clip brush in action. The brushes work by projecting from the viewing location.

In Moi I can draw a curve and do a cut in top, back and right views, but not the 3d view. Is it was possible to have this work in 3d view?

Hi MRAKGR,

Try setting up a shortcut key to set the construction plane to the view direction of the 3D view:
http://moi3d.com/forum/index.php?webtag=MOI&msg=5759.17
or a different variant here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=10112.11

Then when you trigger that you'll be able to draw on the view oriented construction plane.

To reset it back do a right click on View > CPlane.

- Michael

Where we see that Nurbs are more neat than Polys! ;)

I tried the first one and am wondering why is the cut slightly off? I've set the construction plane to view and drew a curve, but when it gets projected on the object during the boolean diff it is quite close to the one I drew instead of following it exactly.

Hi MRAKGR, it's probably because your view is a perspective projection and the cuts are going to project in a straight direction along the construction plane normal.

If you want it to match better you might try setting the 3D view to a parallel projection instead of perspective. You can do that under Options > View > 3D view projection = "Parallel".

- Michael

That was it, thank you.