Working with control point and "hand sculpted" surfaces in Rhino like in Alias

Rhino Rhino for Windows
21

I always find it interesting to pick Alias-generated models apart when I import them into Rhino. Generally, it seems to build things up from trimmed surfaces, the underlying topology of which are way bigger than I would make if I were asked to build the same thing in Rhino. Indeed, in Rhino many of the surface matching tools work best on untrimmed surfaces, but that leads to problems when modelling pillowed surfaces and the like because it’s all too easy to end up with very sudden changes in direction when U’s and V’s are edited to be tangent at surface corners; that’s part of the reason why I’m interested in understanding the Alias approach, even if it is tricky to mimic in Rhino.

Because I’m not familiar with typical Alias work flow though, it’s difficult to know whether what I’m looking at is Alias or operator driven.

22

sorry for digging this up so late.

just some things off the top of my head, sweep2rail could use the curvature and tangent options for the profile curves, more control over the rebuilding of the surface ie. settings the degrees of the surfaces and spans
Matchsrf, more control on each edge, rebuilding etc. curvature or tangent amount., edge aligning.
fillets, more control over the shape of the fillet, edge aligning
when extending surfaces it would be nice if you could also shrink the surface, and extending from left or right side of the edge.
Blendsrf, edge align, surface rebuild, spans and degrees amount and for all these tools a checkbox maybe so you can see if you hit the tolerances

Now alot of surface tools are allready there but its too much of a hassle to really control the surfaces.

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23

I agree on all accounts.

Philip

24

+1 for me
It’s a long time request.

Probably would be enough to integrate the rebuild tool into the creation tool. Or not?!?!?

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25

Coming to think of it, i think most of my workflow (can only talk for myself) consists of making a surface (using vsr) and matching (using vsr), to me this allready is too much, i dont see why matching has to be a seperate function, why arent the matching tools allready in the command itself (sweep, blend, surface, fillet etc)

And if it has to stay seperate i would really advice rhino to take notes on alias’ matching tool.

This is a good alias workflow, i suggest to take a look at his videos, hes really showing the power of alias, im sure not all of it but its still very nice,…

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Here is a link on some serious surface modeling/control, its not just the tools but the workflow is very nice.

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