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From: Greg M Johnson
Subject: No pointlight-atmospheric media interaction here. (43kb)
Date: 8 Oct 1999 20:08:11
Message: <37fe876b@news.povray.org>
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So what am I doing wrong?
#include "colors.inc"
#include "textures.inc"
#include "stones.inc"
#include "metals.inc"
//global_settings { max_trace_level 12 }
//background {Black+Blue/5}
sphere {<0,400,0>,13
rotate<0,0,0>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,20>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,-20>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,40>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,-40>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,60>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,-60>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,80>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,-80>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,100>
pigment {White}
}
sphere {<0,400,0>,13
rotate<0,0,-100>
pigment {White}
}
#declare f=.084; // was 0.08
#declare R=399;
#declare funk=
isosurface { function
{noise3d(x*f,y*f,z*f)}
accuracy 0.01
threshold 0.0
bounded_by {
sphere{0,500*(.40+clock)}
}
rotate <0,0,90>
//pigment{functionabs((noise3d(x*2,y*4,z*4)*.875)&(noise3d(x*4,y*2,z*4)*.875)&(noise3d(x*4,y*4,z*2)*.875))
poly_wave}
pigment{Green}
finish{ambient 0.20 reflection .0}
normal {crackle}
}
//object {funk }
camera {
location <0,170,-400>*3.1
look_at <0,100,0>
angle 48
}
light_source{<0.005,0.00081,0.00081> color White*14
media_interaction on}
/*
light_source { <0,0,0>
color White*14
spotlight
radius 90
falloff 89//28
tightness 1
point_at x
}
*/
#declare j=10;
media { //media scattering
intervals 10
scattering { 2, red 0.05 blue 0.001 green 0.02}
samples 1, 10
confidence 0.9999
variance 1/1000
ratio 0.9
}
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Attachments:
Download 'junk.jpg' (43 KB)
Preview of image 'junk.jpg'
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From: Jerome M BERGER
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 8 Oct 1999 20:40:20
Message: <37FE8EE5.986C97BC@enst.fr>
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"Greg M. Johnson" wrote:
>
> So what am I doing wrong?
>
> #include "colors.inc"
> #include "textures.inc"
> #include "stones.inc"
> #include "metals.inc"
>
> //global_settings { max_trace_level 12 }
>
> //background {Black+Blue/5}
>
> sphere {<0,400,0>,13
> rotate<0,0,0>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,20>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,-20>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,40>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,-40>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,60>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,-60>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,80>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,-80>
> pigment {White}
> }
>
> sphere {<0,400,0>,13
> rotate<0,0,100>
> pigment {White}
> }
> sphere {<0,400,0>,13
> rotate<0,0,-100>
> pigment {White}
> }
>
> #declare f=.084; // was 0.08
> #declare R=399;
>
> #declare funk=
>
> isosurface { function
> {noise3d(x*f,y*f,z*f)}
>
> accuracy 0.01
> threshold 0.0
>
> bounded_by {
> sphere{0,500*(.40+clock)}
> }
> rotate <0,0,90>
>
>
//pigment{functionabs((noise3d(x*2,y*4,z*4)*.875)&(noise3d(x*4,y*2,z*4)*.875)&(noise3d(x*4,y*4,z*2)*.875))
> poly_wave}
> pigment{Green}
> finish{ambient 0.20 reflection .0}
> normal {crackle}
> }
>
> //object {funk }
>
> camera {
> location <0,170,-400>*3.1
> look_at <0,100,0>
> angle 48
> }
>
> light_source{<0.005,0.00081,0.00081> color White*14
> media_interaction on}
>
> /*
> light_source { <0,0,0>
> color White*14
> spotlight
> radius 90
> falloff 89//28
> tightness 1
> point_at x
>
> }
> */
> #declare j=10;
>
> media { //media scattering
> intervals 10
> scattering { 2, red 0.05 blue 0.001 green 0.02}
> samples 1, 10
> confidence 0.9999
> variance 1/1000
> ratio 0.9
> }
>
> ------------------------------------------------------------------------
> [Image]
There is, but it doesn't appear because there's nothing to stop the
rays (except for the spheres, but the media here is white anyway).
If you add a plane { -z, -100 pigment { rgbt 1 } hollow } the media
appears...
Jerome
PS: if you render at higher res, you'll see the media appear for a few
pixels in the pic...
--
*******************************
* they'll tell you what can't * mailto:ber### [at] inamecom
* be done and why... * http://www.enst.fr/~jberger
* Then do it. *
*******************************
Post a reply to this message
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From: Jerome M BERGER
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 8 Oct 1999 20:48:24
Message: <37FE90C9.A95DEA68@enst.fr>
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Attached is a render with your parameters at 640x480. One of the sphere
has a blue pigment, one is red and one is green, the other are still
white but the media effect washes them out completely and all appear
white...
Jerome
PS: jpeg played havoc with most of the blue dots from the media but some
still remain to show it's here...
--
*******************************
* they'll tell you what can't * mailto:ber### [at] inamecom
* be done and why... * http://www.enst.fr/~jberger
* Then do it. *
*******************************
Post a reply to this message
Attachments:
Download 'test.jpg' (45 KB)
Preview of image 'test.jpg'
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From: Jerome M BERGER
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 8 Oct 1999 21:39:46
Message: <37FE9CD3.311984AD@enst.fr>
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If you up the quality settings, you can make the media appear, but it
will cost you a lot of time... This one rendered at 10PPS on a PII 266
media { //media scattering
intervals 100
scattering { 2, red 0.05 blue 0.001 green 0.02}
samples 10, 100
confidence 0.999999
variance 1/100000
ratio 0.9
}
Jerome
--
*******************************
* they'll tell you what can't * mailto:ber### [at] inamecom
* be done and why... * http://www.enst.fr/~jberger
* Then do it. *
*******************************
Post a reply to this message
Attachments:
Download 'test.jpg' (14 KB)
Preview of image 'test.jpg'
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From: GrimDude
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 9 Oct 1999 01:18:46
Message: <37fed036@news.povray.org>
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grumble
--
GrimDude
gri### [at] netzerocom
Post a reply to this message
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From: Greg M Johnson
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 9 Oct 1999 10:20:03
Message: <37ff4f13@news.povray.org>
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Thanks for the effort. What I eventually am trying to get is a "christmas bulb in
a wiffle ball in the fog," except my wiffle ball is an isosurface.
This whole effect renders quickly, is intuitively set up, and only requires a
White*14 intensity SPOTLIGHT.
When i go to POINTLIGHT, I have to put that plane in there and raise the intensity
several orders of magnitude to get it to work. And as you said, requires a long
render time.
What's the difference between spot & point lights??? Is this "intentional"??
"Jerome M. BERGER" wrote:
> Attached is a render with your parameters at 640x480. One of the sphere
> has a blue pigment, one is red and one is green, the other are still
> white but the media effect washes them out completely and all appear
> white...
>
> Jerome
>
> PS: jpeg played havoc with most of the blue dots from the media but some
> still remain to show it's here...
>
> --
> *******************************
> * they'll tell you what can't * mailto:ber### [at] inamecom
> * be done and why... * http://www.enst.fr/~jberger
> * Then do it. *
> *******************************
>
> ------------------------------------------------------------------------
> [Image]
Post a reply to this message
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From: GrimDude
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 9 Oct 1999 15:21:48
Message: <37ff95cc@news.povray.org>
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Greg M. Johnson <"gregj;-)56590"@aol.c;-)om> wrote in message > What's the
difference between spot & point lights??? Is this "intentional"??
>
Spotlight works like a spotlight, er search light if you will. :)
Assuming, of course, that you define it properly.
If you are using Pov 4 Windows, just click on the area indicated in the
included image, while your Pov F.E. is up and running. ;)
--
GrimDude
gri### [at] netzerocom
Post a reply to this message
Attachments:
Download 'Start.jpg' (2 KB)
Preview of image 'Start.jpg'
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From: Simen Kvaal
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 9 Oct 1999 18:36:33
Message: <37ffc371@news.povray.org>
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>If you are using Pov 4 Windows, just click on the area indicated in the
>included image, while your Pov F.E. is up and running. ;)
>--
Haha! I almost got a heart-attack there! Have I missed something, I thought.
;o)
Simen.
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From: GrimDude
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 9 Oct 1999 20:54:05
Message: <37ffe3ad@news.povray.org>
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heh
--
GrimDude
gri### [at] netzerocom
Post a reply to this message
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From: Buckaroo Bill
Subject: Re: No pointlight-atmospheric media interaction here. (43kb)
Date: 9 Oct 1999 23:20:22
Message: <380005f6@news.povray.org>
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huh
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