Hard surface modeling - advanced creases

[VintQ]

Hi,

I'm trying to figure out the following. How would you create an octagonal crease on a curved surface without breaking that curved surface? It's a riddle to me. It just can't be the only solution is NURBS.

The image attached shows some ideas.


thx,

Vint

[shroomer]

hello all. i'm trying to learn subd modeling and it's problems like the above that are proving to be the most difficult areas to master. any advice on how to do it?

[Gadzooks]

Would like to know this as well.

[Larky]

Hello. Let me get my licenses sorted (I'm back again after a few years of being away) and I'll show how I'd do this.

[Philip]

You want an octagon but I'm already counting 10 sides instead of eight or is there something I'm missing?

[Hasnz]

Hi ,

This is something I am still struggling at .

Here is my go at it . Slight pinch is still there and requires more tweaking . Unfortunately , I cant do without creating N-gons with my current knowledge . But i guess this is one of the worst case scenarios , and the reflection distortion is pretty minimal i think .

A key to create such shapes is to already have a denser mesh so the pinching gets minimized further . In this case I will smooth the mesh once and consider that as my low poly base .


Please check out this site ; The best to learn subd modelling :
http://www.lightwiki.com/Fundamental...patch_Modeling .


Another thing i would suggest is to start practice this on a flat surface and figure out different ways to create better loops .
Next would be a single directional curved surface like a cylinder .
Spherical shapes should be the last ones to master .








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[Caccipergolo]

Great exercise hasnz! Did you mind posting a wire of that sphere?
And welcome to the forum !!!

[Hasnz]

Hi and thanks Caccipergolo !

I have attached the wireframe along with the actual obj so you can take a look . I Can smooth out the poles with a little bit more tweaking but I still want to see a quad and tri solution .
The only quad solution I think would be if someone would spline patch out the shape with tight corners . But as long as my renderer supports N-gons i think i would stick this solution .
If its a deformable object ; i dont want to know