Subject:
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Re: Transparent colors in POV-Ray
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Newsgroups:
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lugnet.cad.ray
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Date:
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Sat, 13 Jun 2009 19:02:29 GMT
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Viewed:
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11569 times
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In lugnet.cad.ray, Anders Isaksson wrote:
> Roland Melkert wrote:
> >
> > The thing is you can't clearly see through it, but if I increast the
> > 't' value of the pigment it seems like part loses it's own color
> > (e.g. red transparent renders blue if surrounding parts are blue). I
> > think I'm just not 'getting' the whole rgbft meaning or something.
>
> Try dropping the 'ambient' part. This is how my transparent 'christmas
> lights' are defined:
>
> #declare Color46_t = texture {
> pigment { rgbf <1,0.905882,0.211765,0.85> }
> finish { ambient 0.0 diffuse 1.0 phong 0.5 phong_size 40 reflection 0.6
> refraction 1 ior 1.25 }
> }
>
> http://web.telia.com/~u16122508/merry.htm#raytrace
Thanks,
I've been experimenting and discovered trans blue is just by nature very dark,
so I replaced it by trans white in the animation I was working on (The
"Experiment" sample of LD4DStudio.).
I'm now using:
//----Texture for LDraw color 47 "clear"
#declare color47 = texture {
pigment {
rgbft <1.0000, 1.0000, 1.0000, 0.9000, 0.0500>
}
normal {
bumps 0.0100
scale 0.5000
turbulence 0.0000
}
finish {
ambient rgb <0.1000, 0.1000, 0.1000>
diffuse 1.0000
brilliance 1.0000
conserve_energy
ior 1.2000
phong 0.5000
phong_size 40.0000
metallic 0.0000
reflection {
rgb <0.0800, 0.0800, 0.0800>
falloff 1.0000
exponent 1.0000
metallic 0.0000
}
}
}
But I'm still not happy with it, take a look at this animated gif for example. I
don't like those black (flickering) edges around the window.
http://www.ld4dstudio.nl/img/ld4d/technicCarPV.gif
But for now it has to do, because all this fiddling delays me from releasing the
1.1 version.
Maybe when the 1.1 version is available some POV-Ray guru could take a look at
the (fully customizable) color definitions.
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Message has 2 Replies:
 | | Re: Transparent colors in POV-Ray
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| (...) When do you think 1.1 is available????? I am waiting for film export!!! Ok, I think your problem can't be solved because the surfaces meet exactly the same plane. So the renderer has to decide which color to take. As both are exactly the same (...) (15 years ago, 13-Jun-09, to lugnet.cad.ray)
| | | Re: Transparent colors in POV-Ray
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| (...) the real word value), I think part of the flickering is reflections/refractions of the moving cogs. Also, it might help to raise the window a tiny amount (or shrink it) so that the bottom of the transparent part is numerically above the top of (...) (15 years ago, 13-Jun-09, to lugnet.cad.ray)
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Message is in Reply To:
| | Re: Transparent colors in POV-Ray
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| (...) Try dropping the 'ambient' part. This is how my transparent 'christmas lights' are defined: #declare Color46_t = texture { pigment { rgbf <1,0.905882,0.211765,0.85> } finish { ambient 0.0 diffuse 1.0 phong 0.5 phong_size 40 reflection 0.6 (...) (15 years ago, 12-Jun-09, to lugnet.cad.ray)
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