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Hi all,
I created flames with "media" in the new POV-Ray 3.1, but the center of
the flames are
always partial transparent. Flames created with "halo" in POV-Ray 3.02
are not transparent
in the hot flame center and more realistic.
My question: How can i create better flames with "media"?
Many thanks,
Heiko
The problematic code:
#include "colors.inc"
#include "textures.inc"
camera {
location < 0, 2, 4 >
look_at < 0, 0, 0 >
}
light_source { < -25, 35, 34 >
color White
}
sphere {
<-.5,0,-1> 1.5
pigment { color rgbf<1, 1, 1, 1> }
finish { ambient 0 diffuse 0 }
interior{
media{
emission 0.68
intervals 5
samples 5, 10
confidence 0.999
variance 1/1000
density {
spherical
ramp_wave
color_map {
[0.0 color rgb <0.0, 0.0, 0.0>]
[0.2 color rgb <1.0, 0.0, 0.0>]
[1.0 color rgb <1.0, 1.0, 0.0>]
}
turbulence 1.9
frequency 2
scale .7
}
}
}
hollow
scale 1.9
}
plane
{
y,
-2
pigment { checker color White color Black }
}
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Try lowering the filter value on your pigment.
Ken Tyler
heiko.rappich wrote:
> Hi all,
> I created flames with "media" in the new POV-Ray 3.1, but the center of
> the flames are
> always partial transparent. Flames created with "halo" in POV-Ray 3.02
> are not transparent
> in the hot flame center and more realistic.
> My question: How can i create better flames with "media"?
>
> Many thanks,
>
> Heiko
>
> The problematic code:
>
> #include "colors.inc"
> #include "textures.inc"
>
> camera {
> location < 0, 2, 4 >
> look_at < 0, 0, 0 >
> }
>
> light_source { < -25, 35, 34 >
> color White
> }
>
> sphere {
> <-.5,0,-1> 1.5
> pigment { color rgbf<1, 1, 1, 1> }
> finish { ambient 0 diffuse 0 }
> interior{
> media{
> emission 0.68
> intervals 5
> samples 5, 10
> confidence 0.999
> variance 1/1000
> density {
> spherical
> ramp_wave
> color_map {
> [0.0 color rgb <0.0, 0.0, 0.0>]
> [0.2 color rgb <1.0, 0.0, 0.0>]
> [1.0 color rgb <1.0, 1.0, 0.0>]
> }
>
> turbulence 1.9
> frequency 2
> scale .7
> }
>
> }
> }
> hollow
> scale 1.9
>
> }
>
> plane
> {
> y,
> -2
> pigment { checker color White color Black }
> }
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Ken wrote:
> Try lowering the filter value on your pigment.
>
> Ken Tyler
I think, if you do that, you will see the container-object, but you
won't get more realistic flames. To make the center more opaque (or how
do you spell it), you should increase the amount of emission. A value
of about 5 (or even higher) should do the job.
(Please correct me if I'm wrong.)
ZK
>
>
> heiko.rappich wrote:
>
> > Hi all,
> > I created flames with "media" in the new POV-Ray 3.1, but the center
> of
> > the flames are
> > always partial transparent. Flames created with "halo" in POV-Ray
> 3.02
> > are not transparent
> > in the hot flame center and more realistic.
> > My question: How can i create better flames with "media"?
> >
> > Many thanks,
> >
> > Heiko
> >
> > The problematic code:
> >
> > #include "colors.inc"
> > #include "textures.inc"
> >
> > camera {
> > location < 0, 2, 4 >
> > look_at < 0, 0, 0 >
> > }
> >
> > light_source { < -25, 35, 34 >
> > color White
> > }
> >
> > sphere {
> > <-.5,0,-1> 1.5
> > pigment { color rgbf<1, 1, 1, 1> }
> > finish { ambient 0 diffuse 0 }
> > interior{
> > media{
> > emission 0.68
> > intervals 5
> > samples 5, 10
> > confidence 0.999
> > variance 1/1000
> > density {
> > spherical
> > ramp_wave
> > color_map {
> > [0.0 color rgb <0.0, 0.0, 0.0>]
> > [0.2 color rgb <1.0, 0.0, 0.0>]
> > [1.0 color rgb <1.0, 1.0, 0.0>]
> > }
> >
> > turbulence 1.9
> > frequency 2
> > scale .7
> > }
> >
> > }
> > }
> > hollow
> > scale 1.9
> >
> > }
> >
> > plane
> > {
> > y,
> > -2
> > pigment { checker color White color Black }
> > }
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Hendrik Knaepen (hen### [at] skynet be)
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Idee Software -- Vlaamse ShareWare
E-Mail: ide### [at] iname com
WWW: http://www.surf.to/ideesoftware
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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Remember, 'emission' is color vector oriented so 0.68 is rgb<0.68,0.68,0.68>.
rgb<1,0.8,0.3> might be closer to a more reasonable color.
The 'density' color_map is based upon 0 at outermost edge (like halo was), the
color being the density (1 more than 0).
Your trouble could be with the 'spherical' keyword, 'onion' may work out
better. And also the turbulence/frequency, unless the intent is to get a
rather chaotic flame, will mix it up a great deal to where the density is not
where expected. Scaling up like you have will diminish the media as well.
I may be wrong too, so.....
Message <362E409A.6AEB3235@t-online.de>, heiko.rappich typed...
>
>Hi all,
>I created flames with "media" in the new POV-Ray 3.1, but the center of
>the flames are
>always partial transparent. Flames created with "halo" in POV-Ray 3.02
>are not transparent
>in the hot flame center and more realistic.
>My question: How can i create better flames with "media"?
>
>Many thanks,
>
>Heiko
>
>
>The problematic code:
>
>#include "colors.inc"
>#include "textures.inc"
>
>
>camera {
> location < 0, 2, 4 >
> look_at < 0, 0, 0 >
> }
>
>light_source { < -25, 35, 34 >
>color White
>}
>
>
>sphere {
><-.5,0,-1> 1.5
> pigment { color rgbf<1, 1, 1, 1> }
> finish { ambient 0 diffuse 0 }
> interior{
> media{
> emission 0.68
> intervals 5
> samples 5, 10
> confidence 0.999
> variance 1/1000
> density {
> spherical
> ramp_wave
> color_map {
> [0.0 color rgb <0.0, 0.0, 0.0>]
> [0.2 color rgb <1.0, 0.0, 0.0>]
> [1.0 color rgb <1.0, 1.0, 0.0>]
> }
>
> turbulence 1.9
> frequency 2
> scale .7
> }
>
> }
> }
> hollow
> scale 1.9
>
> }
>
>
>plane
>{
> y,
> -2
> pigment { checker color White color Black }
>}
>
>
>
>
>
>
>
>
--
omniVERSE: beyond the universe
http://members.aol.com/inversez/POVring.html
=Bob
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