POV-Ray : Newsgroups : povray.general : Hair texture problem Server Time
29 Nov 2024 07:57:46 EST (-0500)
  Hair texture problem (Message 1 to 3 of 3)  
From: RCRuiz
Subject: Hair texture problem
Date: 16 Feb 2006 13:15:01
Message: <web.43f4c01838c257cf98a7cf320@news.povray.org>
Hi to all, I'm doing an exporter from blender to pov but I found a problem
in the texture area that I havent been able to put my finger on.

This is a pov rendering

http://i10.photobucket.com/albums/a116/RCRuiz/Temporal/PovHair.jpg

where :

#declare tex_MAMaterial_Sub1 = texture {pigment { gradient  x
color_map{[0.000000 color rgb <0.113905,0.066455,0.000000,0.0>][0.426667
color rgb <0.388934,0.207464,0.000000,0.0>][0.893333 color rgb
<0.725624,0.563291,0.177640,0.0>][1.000000 color rgb
<1.000000,0.853262,0.322402,0.0>]}  scale < 1.0,1.0,1.0> translate <
0.000000,0.000000,0.000000>}  finish { diffuse 0.800000 specular 1.758810
ambient 0.10000000149 roughness 1/511 } }

and this is a blender render

http://i10.photobucket.com/albums/a116/RCRuiz/Temporal/BlenderHair.jpg

When I export it create a mesh2 with uvm per hair (a lot of info)

as you can see the brightness is very diferent, Where is my error?

Thank you

Un Saludo


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From: Sebastian H 
Subject: Re: Hair texture problem
Date: 16 Feb 2006 14:57:27
Message: <43f4d927$1@news.povray.org>
> as you can see the brightness is very diferent, Where is my error?

I can not put my finger on it but he're some guesses.
- The texture looks fine, I tried it on a sphere
- The over all brightness is too high (light source too near?)
- Did you export normal vectors as well?
   They'll will smooth the hair a lot.
- Some AA would look good
- Try to multiply every color in the color map by e.g. 0.5
- Draw a cylinder in parallel to the hair and compare
- Try phong instead of specular (though this will not change the
   overall brightness)
- Shift the texture around. The brown part seems to be above the hair

Sebastian


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From: RCRuiz
Subject: Re: Hair texture problem
Date: 16 Feb 2006 21:00:01
Message: <web.43f52d0fa9e903d05a7acef50@news.povray.org>
"Sebastian H." <van### [at] gmxde> wrote:
> > as you can see the brightness is very diferent, Where is my error?
>
> I can not put my finger on it but he're some guesses.
> - The texture looks fine, I tried it on a sphere
> - The over all brightness is too high (light source too near?)
> - Did you export normal vectors as well?
>    They'll will smooth the hair a lot.
> - Some AA would look good
> - Try to multiply every color in the color map by e.g. 0.5
> - Draw a cylinder in parallel to the hair and compare
> - Try phong instead of specular (though this will not change the
>    overall brightness)
> - Shift the texture around. The brown part seems to be above the hair
>
> Sebastian

Thanks for you reply :D Sevastian , I do export normals, I will try what you
recomend. I just got a more or less decent result increeseng the specular to
100 and hard as 50 . . I feel I'm geting close, but not quite there

http://i10.photobucket.com/albums/a116/RCRuiz/Temporal/PovHair2.jpg

Thank you for your help


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