Creating Low Res Cloth...How?

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  02 February 2007
Creating Low Res Cloth...How?

I am about to do some cloth simulation and therefore I need a low res proxy model from one of my clothing pieces, namely from a shirt.
I attached a screenshot of the cloth. What would be the fastest way to create a Low Res Proxy model from it with a good topology that I could use for Syflex. I want to drive the High Res cloth via a wrap deformer.
Do I have to make one from scratch?

Thanks!
Attached Images
File Type: gif cloth.gif (46.9 KB, 36 views)
 
  02 February 2007
I think your pretty close to a good poly mesh for syflex to sim..

the area that I would suggest adjustment is the edges/trim of the blouse.
make them as even as the rest of the mid section of the blouse...
unless you have soft/hard edges being displayed,,

use select contiguous edges, then delete( Delete Edge) the higlighted edges.

I would think the straps and breast area would stay rather stiff, so you could rig/wrap the
blouse to the char then use mimic constraints to keep those areas doing mostly what your rig/wrap is doing.. then let the lower part of the blouse sim'n freely..

nice model...
Attached Images
File Type: gif cloth1.gif (44.3 KB, 18 views)
 
  02 February 2007
Originally Posted by jmartin: I think your pretty close to a good poly mesh for syflex to sim..

the area that I would suggest adjustment is the edges/trim of the blouse.
make them as even as the rest of the mid section of the blouse...
unless you have soft/hard edges being displayed,,

use select contiguous edges, then delete( Delete Edge) the higlighted edges.

I would think the straps and breast area would stay rather stiff, so you could rig/wrap the
blouse to the char then use mimic constraints to keep those areas doing mostly what your rig/wrap is doing.. then let the lower part of the blouse sim'n freely..

nice model...


Thanks martin for your tips!

In the meantime I build a lowres proxy cloth from scratch. I attached a screenshot. It solves pretty good and I use it as wrap influence object for the highres. This brings its own issues with it, but I try to solve them on my own first before replying back.

I recognized something strange happening when trying to solve only the highres model. I am working in cm and the lowres model solves just fine. However when I try to sim the highres it just disappears from the screen after frame 2. When I nail it down in space only the nailed polygons remain in the viewer. I only get somewhat decent results (but very slow) when switching to meters which actually doesn't make any sense because of the scale of my scene. The cloth would then weigh about 4000 kg as the "info" option tells me.

I know that densly packed polygon areas are not good candidate for solving in syflex, but then I don't understand why my piece of cloth just flys offscreen. Any idea why this happens?

Thanks a lot!! :-)
Attached Images
File Type: gif lowres.gif (47.1 KB, 22 views)
 
  03 March 2007
Hi guys,

I need your help again :-)

The cloth simulation works fine so far, but only for the low res wrap influence objects. The highres meshes follow as they should, but since there are more wrinkles and detail in the highres meshs I can't avoid that they penetrate the skin of the character to a certain degree (which of course is a collision object for the lowres meshes). I decreased the envelope in the wrap deformer settings as increased the envelope for the collider mesh, but penetration still occurs.

Is there a way to additionally influence the wrap deforming objects with some kind of objects that repells the highres mehes out of the skin?
The problem of course is that I can't influence the highres models directly via sycloth node, only via the lowres meshes.
So I need some additional tweaking on the highres models, but I don't know which possibilites I have there.

Any ideas?

Thanks! :-)

Last edited by ConSeannery : 03 March 2007 at 02:16 AM.
 
  03 March 2007
Hey, I'm not sure if this will help, but I've been using some wraps for my hi-res lately. You may have already done this, but in your wrap deform Option box you can change the influence type from points to faces. If you influence with faces, your wrap should follow alot more closely with your low res. Good luck.

Just maybe I hint for next time. I would start with the low res first, then duplicate, make your tweaks to edges, etc. Then polysmooth for your hi-res. That way the mesh will be alot more similar and your wrap will be able to follow more closely.

Last edited by emrong : 03 March 2007 at 05:49 PM.
 
  03 March 2007
Hi ekg9. Thanks for your tips.

The face mode is enabled by default as far as I remember. I also tried the point mode but got similar results.

Your are right about starting with the lowres model and then adding more and more detail.
However, this piece of cloth is a purchase so I only had a highres model.

I guess I will simply pull out the penetrating faces with a lattice. I will see if it works on monday. I need my weekend now :-)
 
  03 March 2007
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