Wrap deformer low poly proxy issue

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Old 06 June 2008   #1
Wrap deformer low poly proxy issue

Hi everyone,

Im using a wrap deformer to make my low poly proxy drive a higher resolution mesh.
The problem i have is that for some reason the polygons in the high res mesh are sticking rather too stubbornly to the shape of the low poly mesh, leaving me with unsightly 'polygon-shapes'.
I need these smoothed out and cant seem to find a workaround. The annoying thing is i have a high res mesh being driven by a low-res proxy in another scene and it deforms fine. Ive compared scenes but cant find what i may be doing wrong here.

Heres a pic to show whats going on





A massive thankyou and a cookie to anyone who can help me with this
 
Old 06 June 2008   #2
Try to use the wrap/Dropoff and wrap/Smoothness attributes to adjust.
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Old 06 June 2008   #3
Is your high poly mesh just a subdivided version of the low poly mesh? If so, you can simply apply a polySmooth to your low poly (after all the deformers in your rig) with enough subdivisions to acheive the desired level of resolution.
This would be much simpler and far more reliable than a wrap deformer, not to mention quite a bit faster too.
 
Old 06 June 2008   #4
Originally Posted by visualfx: Is your high poly mesh just a subdivided version of the low poly mesh?


It is, but extra detail has been added in zbrush that i need to keep. I had tried to just make do with the low res and polysmooth option but i need to keep the details unfortunately.

mascio: My Wrap settings were

Exclusive Bind: Off
Weight Threshold: 0
Use Max Distance: On
Max Distance: 1
Influence: Faces

i tried to adjust the dropoff and smoothness settings but with no luck. If i changed the smoothness from 0 to 1 then the majority of my high res mesh stayed where it was and only a few select points moved with the low poly proxy. And anything higher meant that the high res mesh didnt move at all.

As far as i could tell changing the dropoff from 4 all the way up to 20 seemed to do nothing.

Should i be adjusting these settings on the 'lowpoly' model or the 'lowpoly base' model?

Thanks for the replies guys. I appreciate the help
 
Old 06 June 2008   #5
In future, it may be better to add these additional details via displacement mapping. This would avoid the problems you are encountering now, and alleviate the need for such extreme mesh resolution.
 
Old 06 June 2008   #6
Originally Posted by visualfx: In future, it may be better to add these additional details via displacement mapping.


i tried that 1st and encountered all kinds of problems, and using the wrap deformer was suggested as one of the solutions.

the original thread is here showing my displacement issues:
http://forums.cgsociety.org/showthread.php?f=7&t=631744
 
Old 06 June 2008   #7
can you post the scene?
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Old 06 June 2008   #8
Originally Posted by mascio: can you post the scene?


I can do but its quite large, about 25megs zipped (cos of the large high poly model)

I dont think it'll let me post something that big on here
 
Old 06 June 2008   #9
Ok, ive hosted it on our ftp.

Just click the link below and type:

shark for username

and

shark for password



ftp://bandito.ftp.iws-hosting.co.uk


Should work

thanks for taking the time to look at this
 
Old 06 June 2008   #10
I have downloaded your scene, but it doesn't works. Maya gives me an error when I try to open/import it.
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What is the genius? It is fantasy, hunch, certitude and a rapid execution. Il Perozzi
 
Old 06 June 2008   #11
im using maya 2008. It seems to work for me. There are no special plugins or anything
 
Old 06 June 2008   #12
Could you upload it as a .ma?
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Old 06 June 2008   #13
ive uploaded it in the same place as an .ma file. Hope that works
 
Old 06 June 2008   #14
I dont suppose anyones had a chance to have a quick look at it for me?
 
Old 06 June 2008   #15
I did yesterday, but haven't found a fix yet.
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