SubD examples and models

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Re: SubD examples and models

Postby ely862me » Sat Jan 30, 2016 11:03 am

Thanks !
Lovely shoes !
As with Artisan, adding two lines makes is rounder adding three lines makes it sharper and also rounder.
The crease tool is gorgeous, especially that is editable while the surfaces is subdivided, but at low subdivisions it will never offer you the roundness of the adding detail.
In the futures, if possible, Thomas would you add more geometry along the lines Crease is activated ?
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Re: SubD examples and models

Postby cotty » Sat Jan 30, 2016 1:49 pm

cotty_toaster.png
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Re: SubD examples and models

Postby pilou » Sat Jan 30, 2016 4:04 pm

Tyranny of G2! :mrgreen:
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Re: SubD examples and models

Postby JQL » Sat Jan 30, 2016 4:24 pm

Cotty I actually prefer the left toaster model design. You should increase crease values! :D
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Re: SubD examples and models

Postby pbacot » Sat Jan 30, 2016 4:39 pm

I'd take either of those toasters. I assume that finish is expensive though.
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Re: SubD examples and models

Postby thomthom » Sat Jan 30, 2016 7:35 pm

Ely - you're teasing us! Can't wait to see the whole model you're working on!

cuttingedge: That's looking really nice. Good topology flow. I would have loved to see how you modelled that. Ever considered doing a timelaps video?
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Re: SubD examples and models

Postby thomthom » Sat Jan 30, 2016 7:38 pm

ely862me wrote:In the futures, if possible, Thomas would you add more geometry along the lines Crease is activated ?

I'm in the progress of implementing OpenSubdiv. It does has something called adaptive subdivision - that might do what you want. But I suspect it will be at the expense of live creasing (or any live editing of the subdivided mesh). So one would have to choose if you want uniform subd that us denser but allow tweaking of the subdivided results, or adaptive for optimal polycount.
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Re: SubD examples and models

Postby cotty » Sun Jan 31, 2016 10:55 am

SCF_Cotty_subd30.png
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Re: SubD examples and models

Postby jiminy-billy-bob » Sun Jan 31, 2016 1:28 pm

JQL wrote:
jiminy-billy-bob wrote:
JQL wrote:It would be cool to have render engines integrated in the workflow

This is already in the pipes!


Bah Jiminy, you're always ahead of my cool ideas...


I didn't came up to the idea. I just happened to follow the discussion :-)
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Re: SubD examples and models

Postby cuttingedge » Sun Jan 31, 2016 4:37 pm

Cotty how do you display the subquads without the triangulation showing?
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Re: SubD examples and models

Postby Rich O Brien » Sun Jan 31, 2016 4:49 pm

cuttingedge wrote:Cotty how do you display the subquads without the triangulation showing?


QuadFace Tools > Unsmooth Quads
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Re: SubD examples and models

Postby thomthom » Sun Jan 31, 2016 6:45 pm

cotty wrote:
SCF_Cotty_subd30.png

That's a great example of blending shapes with creases. I'm thinking I should set up a dedicated section on the website for these types of studies.
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Re: SubD examples and models

Postby thomthom » Sun Jan 31, 2016 6:47 pm

Rich O Brien wrote:
cuttingedge wrote:Cotty how do you display the subquads without the triangulation showing?


QuadFace Tools > Unsmooth Quads

But what about the thicker lines in that render - representing the original edges? How is that done? Multiple passes?
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Re: SubD examples and models

Postby cotty » Sun Jan 31, 2016 7:31 pm

Rich O Brien wrote:
cuttingedge wrote:Cotty how do you display the subquads without the triangulation showing?

QuadFace Tools > Unsmooth Quads

Yes, screenshot here: viewtopic.php?f=397&t=63826&start=30#p585747

thomthom wrote:But what about the thicker lines in that render - representing the original edges? How is that done? Multiple passes?


Since two of your plugins are not enough ;-) :
- SubD
- Edit group
- Select all
- SeletionToys: Select only -> Edges
- Group selected edges
- Gropued edges without faces are treated as profiles
- Increase profile width in the style settings
- Exit SubD group
- Unsmooth quads
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Re: SubD examples and models

Postby HornOxx » Sun Jan 31, 2016 9:26 pm

not a plane but at least a wing
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Re: SubD examples and models

Postby JQL » Sun Jan 31, 2016 9:51 pm

That wing rocks HornOxx!
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Re: SubD examples and models

Postby alvis » Sun Jan 31, 2016 9:55 pm

Can you explain to me, why the first attempt fails. Why I should select one edge of triangulated face, that the second attemt must be fine.
https://youtu.be/XiUtriWV_lo
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Re: SubD examples and models

Postby thomthom » Sun Jan 31, 2016 10:11 pm

alvis wrote:Can you explain to me, why the first attempt fails. Why I should select one edge of triangulated face, that the second attemt must be fine.
https://youtu.be/XiUtriWV_lo

The Convert triangulated Mesh to Quads function doesn't always succeed. It's hard, impossible, to reliable determine exactly how the mesh should be converted as it would require AI understanding of the mesh's topology. In your example it's easy for use humans to see what should be a quad, but not for a script. The script doesn't even take into account soft/smooth/hidden properties - it just sees a set of triangles.

In the case of your mesh there it looks like you have hard edges and then some soft+smooth edges between triangles pairs. Then you want to use the Convert SandboxTools Quads to QuadFace Tools quads instead. (left to the monkey icon). If those edges where hidden you you'd want to use the Blender Quads to QFT Quads function (the monkey icon).
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Re: SubD examples and models

Postby derei » Mon Feb 01, 2016 12:18 am

thomthom wrote:
alvis wrote:Can you explain to me, why the first attempt fails. Why I should select one edge of triangulated face, that the second attemt must be fine.
https://youtu.be/XiUtriWV_lo

The Convert triangulated Mesh to Quads function doesn't always succeed. It's hard, impossible, to reliable determine exactly how the mesh should be converted as it would require AI understanding of the mesh's topology. In your example it's easy for use humans to see what should be a quad, but not for a script. The script doesn't even take into account soft/smooth/hidden properties - it just sees a set of triangles.

In the case of your mesh there it looks like you have hard edges and then some soft+smooth edges between triangles pairs. Then you want to use the Convert SandboxTools Quads to QuadFace Tools quads instead. (left to the monkey icon). If those edges where hidden you you'd want to use the Blender Quads to QFT Quads function (the monkey icon).

Humm, i was in similar situations... means that either more documentation is needed to make it easier to understand when to use each function, or maybe if you would think appropriate, to make the quad-detection script to be more "intelligent", so it can take into consideration multiple parameters at the same time. For example not all Fredo Tools are good in creating or preserving quads... but they do smoothing. So, would be good to rely better on conversion.
Thank you! Keep up the good work ! :bounce:
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Re: SubD examples and models

Postby thomthom » Mon Feb 01, 2016 12:42 am

Yes, better documentation is indeed in need - as well as improving the tools. But docs are on the top of my list when I get home from my travels next week.

I plan to set up a new site for QFT - move away from the BitBucket wiki.
Better text and visuals describing the various features of QFT. GIFs to illustrate common topology pattern.

And extend SUbD's site to include more examples of how various topology patterns subdivide.
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Re: SubD examples and models

Postby cuttingedge » Tue Feb 02, 2016 5:32 am

I was thrilled by the panton chair example shared by Ithil3d on youtube. I thought I'll build one trying slightly different method. A good few minutes and here's what i got.

PANTONCHAIR2.png


render1.jpg
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Re: SubD examples and models

Postby HornOxx » Tue Feb 02, 2016 7:33 am

cuttingedge wrote:... I thought I'll build one trying slightly different method. A good few minutes and here's what i got...

This is a very good SubD example!
how often and unsuccessfully I tried exactly this chair :-P
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Re: SubD examples and models

Postby pilou » Tue Feb 02, 2016 11:55 am

Yes the difficulty with Subdivision modeling against the Nurbs modeling where you have yet all the curves of the model, is to imagine the "rustic" cubic form before it's transformation! :)

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Re: SubD examples and models

Postby miikka1978 » Tue Feb 02, 2016 4:32 pm

Is there any plugin working like Blender's Add Loop cut, see link below? I think that this would be really useful when using SubD.

https://www.blender.org/manual/modeling/meshes/editing/subdividing/loop_subdivide.html
https://www.youtube.com/watch?v=_f4XKe8lZEU
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Re: SubD examples and models

Postby ely862me » Tue Feb 02, 2016 4:38 pm

If you look back a little you will see that we talk about that too, it's called Quad face tools, you can find it in the plugins library.
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Re: SubD examples and models

Postby HornOxx » Wed Feb 03, 2016 10:29 pm

...completed the wing to a plane - certainly not a beauty :?
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Re: SubD examples and models

Postby JQL » Wed Feb 03, 2016 10:32 pm

HornOxx wrote:...completed the wing to a plane - certainly not a beauty :?


Not bad either... but it was a very promising wing
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Re: SubD examples and models

Postby HornOxx » Wed Feb 03, 2016 10:40 pm

JQL wrote:... but it was a very promising wing...

thanks
:lol: ok - give this wing an other try
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Re: SubD examples and models

Postby pilou » Wed Feb 03, 2016 11:44 pm

certainly not a beauty

Yet a charm certain! ;)
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Re: SubD examples and models

Postby Stinkie » Thu Feb 04, 2016 9:40 am

thomthom wrote:There are talks going on with various render engines to allow for them to render high-poly variants from the low-polys.


Nice! :thumb:
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