Subdivision Surfaces planarize vertices

[Anonymous]

I was working with the new SubDiv-Surfacing in Alias 2020 (inkl. Update 2020.1) recently.

An awesome new feature, I like it 🙂

I was wondering, is it possible to get a kinda "Planarize Hull"-Function for SubDiv's

At the moment I use workarounds like this:

- building a Construction-Plane and snap the vertcies to that; or

- building a curve through the vertices. Planarize that curve. And than align the vertices to that curve

Would be helpful if there is a tool to do that automatically. 

Cheers, 

David

[brian.osborn]

Hi David, maybe this is obvious ( sorry if I've misunderstood) but if you use the Subdiv/Align to curve set to linear, then it will have the same effect as your work-around without having to planarize the curve?

However this only works with a line of vertices, not a series in different directions, for this the only way I can see is as you describe , using a construction plane - so I agree would be nice to be able to do this in a faster way - bit like the scaling functionality along an axis in speedform.

Brian

[Anonymous]

Hallo Brian,

Thanks for the comment.

Exacly what you said 🙂

Subdiv/Align to curve with linear option aligns the points on a perfectly straight line.

with quadratic option is a little bit closer, but still because its just a degree 2 curve it changes the curvature a lot.

In a rather big Subdiv-model with a few s-shapes in the geometry, Subdiv/Align to curve will not give good results.

Your mentioned scaling functionality in speedform is what i ment. I actually use a similar way in Maya ... picking many vertices and scale to 0 on one axis. So that is a third workaround 🙂

Planarize hull for Nurbs-surfaces does it that way: keeps more or less the curvature of a surface while "projecting/snapping" the cv's to a plane (view based, or approximated).

in Alias Subdiv a exact "planarize hull" function will not really work, because of complex Subdiv hull's. But it may work with picking a bunch of cv's (with a lasso or box maybe) to than planarize in view-direction or an approximated plane.

Cheers,

David