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I am tring too play around with Julian fractals in povray.... but it
seems that they have ABSOLUTELY no color.... meaning they are black...
how do i color the fractal.. the attached file is my pov file that i'm
using top test it...... PLEASE help me!
Post a reply to this message
Attachments:
Download 'base.pov.txt' (2 KB)
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Psychomek wrote:
> I am tring too play around with Julian fractals in povray.... but it
> seems that they have ABSOLUTELY no color.... meaning they are black...
> how do i color the fractal.. the attached file is my pov file that i'm
> using top test it...... PLEASE help me!
The easy answer to your question is to add a texture
and pigment to your object. Where you have:
#declare Default =
texture{
pigment{rgb<1,0,1>}
finsish{ phong 1}
}
julia_fractal {the stuff you put here}
You need to add texture{Default} like this to make it work:
julia_fractal {the stuff you put here texture{Default}}
It will then work correctly. I saw a light green background with
a purple looking julia fractal image when I rendered it. Pretty
neat looking too : )
Ken Tyler
Post a reply to this message
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Ken wrote:
> Psychomek wrote:
>
> > I am tring too play around with Julian fractals in povray.... but it
> > seems that they have ABSOLUTELY no color.... meaning they are black...
> > how do i color the fractal.. the attached file is my pov file that i'm
> > using top test it...... PLEASE help me!
>
> The easy answer to your question is to add a texture
> and pigment to your object. Where you have:
>
> #declare Default =
> texture{
> pigment{rgb<1,0,1>}
> finsish{ phong 1}
> }
>
> julia_fractal {the stuff you put here}
>
> You need to add texture{Default} like this to make it work:
>
> julia_fractal {the stuff you put here texture{Default}}
>
> It will then work correctly. I saw a light green background with
> a purple looking julia fractal image when I rendered it. Pretty
> neat looking too : )
>
> Ken Tyler
Thanks... now i'm tring to render this Fractal :
#declare W = 5
#declare P = 3.141592
#declare D = 21
#declare J = 47
#declare K = 640
julia_fractal {
<-0.083,0.0,-0.83,-0.025>
hypercomplex
pwr(cos(W*P),max(exp(J/D)/P,K/P*W))
max_iteration 9
precision 40
pigment {
Blue
}
}
so far 10% in 20 minutes on a P120 with 24MB RAM....
Post a reply to this message
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Psychomek wrote in message <361### [at] geocities com>...
<snip>
> Thanks... now i'm tring to render this Fractal :
<code>
>so far 10% in 20 minutes on a P120 with 24MB RAM....
Complex julias (i.e. using those bizarre fxns like pow, atanh etc.) aren't
the fastest things to render, especially if the camera in inside the object.
I had the latter problem once and Ken nicely pointed it out to me, so make
sure POV doesn't report a "Camera is inside a non-hollow object" message.
Peter
Post a reply to this message
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Psychomek wrote in message <361BECD9.D79B3A23@geocities.com>...
>I am tring too play around with Julian fractals in povray.... but it
>seems that they have ABSOLUTELY no color.... meaning they are black...
>how do i color the fractal.. the attached file is my pov file that i'm
>using top test it...... PLEASE help me!
As Ken pointed, you need a texture. I have done several animations of julias
in which the object swirls and morphs, and I think that what looks best as a
texture is something like:
texture
{ pigment { White }
finish { diffuse 1 ambient 0 brilliance 2.25 specular 0.6 roughness 0.005
phong 0.3 phong_size 6.675 metallic 0.5 }
}
Light up the julia with several differently coloured light sources and it
looks really nice.
Peter
Post a reply to this message
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Peter Popov wrote:
> Psychomek wrote in message <361BECD9.D79B3A23@geocities.com>...
> >I am tring too play around with Julian fractals in povray.... but it
> >seems that they have ABSOLUTELY no color.... meaning they are black...
> >how do i color the fractal.. the attached file is my pov file that i'm
> >using top test it...... PLEASE help me!
>
> As Ken pointed, you need a texture. I have done several animations of julias
> in which the object swirls and morphs, and I think that what looks best as a
> texture is something like:
>
> texture
> { pigment { White }
> finish { diffuse 1 ambient 0 brilliance 2.25 specular 0.6 roughness 0.005
> phong 0.3 phong_size 6.675 metallic 0.5 }
> }
>
> Light up the julia with several differently coloured light sources and it
> looks really nice.
>
> Peter
Thanks for the tip on the lights and on your previous post on camera in the
fractal..... and as soon as I get a better pic of the fractal (the newone..the
code is in povray tutorial newsgroup) i'll post it in Images....
Post a reply to this message
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