Hi,

I tryed to add seperate MechSim_Show_Patch() for each pice of cloth in
tshirt.pov (included in MegaPOV 1.0), instead of the show_all().

-there are some visable errors:
  -a line appears on 2 of the 6 cloth pices
   (i use the color=stress option)
  -there is a strange edge on 3 of the 6 cloth pices

-the last pice only works if i make it one row smaller
  -i suspect some problem in counting/using the face_index, but i have not
   been able to find errors in my povray code.

i have put together a small HTML page with some pictures at:

http://www.geocities.com/jwstolk/tshirt_jws_problem.htm

is this a known problem ? or dit i make a mistake somewhere ?

thanks, Jaap. jws### [at] yahoocom

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Jaap wrote:
> 
> Hi,
> 
> I tryed to add seperate MechSim_Show_Patch() for each pice of cloth in
> tshirt.pov (included in MegaPOV 1.0), instead of the show_all().
> 
> [...]

This is a known problem of the MechSim_Show_Patch() macro - i already
posted a workaround somewhere IIRC.

Christoph

-- 
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 31 Dec. 2002 _____./\/^>_*_<^\/\.______

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Christoph Hormann wrote:
>
>This is a known problem of the MechSim_Show_Patch() macro - i already
>posted a workaround somewhere IIRC.
>
thanks, i can stop looking for what i dit wrong now...

i looked around a bit, but can findo no mention of this problem,
(and no work around either.)

can you give a small hint in this ?

 - i tryed using slightly different patch_index numbers (+/- 1 etc.)
   is this the way to go?

 - fixing the src code (is it realy a bug, or more like a limitation ?)

 - don't use MechSim_Show_Patch(), but something else. (what?)

what i would like to do is simple patern and image mapping. i don't realy
need the "show stress" texture.

i also would like to try if it is possible to generate the pices of
cloth in a differnt way:
 -manualy connecting mass/patch pices together
 -generate a half-round version of the flat pice of cloth
 -"cutting" a pice of cloth using boolean operations (or somthing like that)
 -use a mesh-generating algo to fill anny shape with triangles of reasonably
  simmilar size.
 -etc. (i think that enof for this weekend..)

a related Q:
 -how fast/eff is pov-ray SIM ? would it be more sensible to use/write a
  seperate program to do simulation, and let is produce pov-files ?

jaap.

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"Jaap" <jws### [at] yahoocom> wrote in message
news:web.3e3976d068f71ba1adf806de0@news.povray.org...
> Christoph Hormann wrote:
> >
> >This is a known problem of the MechSim_Show_Patch() macro - i already
> >posted a workaround somewhere IIRC.
> >
> thanks, i can stop looking for what i dit wrong now...
>
> i looked around a bit, but can findo no mention of this problem,
> (and no work around either.)
>
> can you give a small hint in this ?

Hi Jaap,

Christoph posted the fix in a reply to one of my posts.. just search for my name and
you
should find it, it's fairly recent (I set my posts to expire so I can't tell you which
one
exactly)

All the best,

Andy Cocker

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