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VintQ
06-29-2008, 04:11 PM
Hi,

Anybody has an answer to the problem beneath. The goal is to get an octagonal crease on a curved surface without messing up that curved surface (using SubD). As you can see on the image I've tried several ideas, and end up with pinching. I can't believe the only solution would be to model using nurbs. There has to be a good way.

Hard riddle this one. Any ideas?


thx,

Vint


http://img299.imageshack.us/img299/8336/octagonpl1.jpg
VintQ
06-29-2008, 06:53 PM
A little bit of research lead to the following technique. The question now is, how implement this on a more complex octagon without increasing the complexity of the curved surface too much.

http://img296.imageshack.us/img296/2406/octagontechniqueku1.jpg
VintQ
06-29-2008, 07:36 PM
and, a possible solution, using only quads. There's still a small amount of pinching in the corners.

Any insights how to remove this?

http://img74.imageshack.us/img74/1354/octagonsolutioniz7.jpg
Abrisene
06-30-2008, 11:59 AM
I've been having similar problems on a model I've been working on recently.
The solution I came up with (I'm using Max 9), was to switch the surface of the crease to a different smooth group/material ID, and then selectively subdivide the surface by smoothing group/ID using the MeshSmooth modifier.

It seems like there'd have to be a better way of doing this though, so I'd be interested in hearing any other solutions that might be offered.
Filip
06-30-2008, 04:45 PM
A little bit of research lead to the following technique.

Yes, that's the way I would do it too. I think, however, that you may need to increase the resolution of your base mesh (i.e. subdivide it once or twice) before you cut out the hexagon. When creating really sharp features on a curved surface, that is sometimes the only way to go.

regards
/Filip
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