POV-Ray : Newsgroups : povray.beta-test : sphere_sweep bug Server Time
5 Nov 2024 09:21:34 EST (-0500)
  sphere_sweep bug (Message 1 to 6 of 6)  
From: JRG
Subject: sphere_sweep bug
Date: 5 Sep 2001 14:36:34
Message: <3b9670b2@news.povray.org>
POV-Ray 3.5b1 Windows ME AMD Athlon 1000 256 Megs

Too bad the sphere_sweep bug is still there:
it could look like a minor bug but it's really annoying for those (like me)
who often use sphere_sweep together with radiosity.
Just as an aside: am I wrong or there's the .bmp file of a partial render
(chess2.pov) in the advanced folder?
I also would have expected that metals.inc was changed, since ambient 0.35
and diffuse 0.7 are not the best metallic finishes nowadays...;)

Des: Coloured sphere_sweeps lead to bad radiosity:


// +qr
#version 3.5;
global_settings {
ambient_light 0
radiosity {}
}

box {-1,1
scale 12
pigment {rgb 1}}

light_source {
<0,0,0>
rgb 0.7}

#declare thing=0;  // 0 sphere_sweep, 1 torus

#if (!thing)
sphere_sweep {
catmull_rom_spline
6,
<1,0,0>,.1
<0,0,1>,.1
<-1,0,0>,.1
<0,0,-1>,.1
<1,0,0>,.1
<0,0,1>,.1
pigment {rgb x+y}
scale 2
translate -y}

#else

torus {1,0.1
pigment {rgb x+y}
scale 2
translate -y}

#end

camera {location <0,0,-5> look_at 0}


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From: Anders K 
Subject: Re: sphere_sweep bug
Date: 5 Sep 2001 15:34:41
Message: <3b967e51@news.povray.org>
> Just as an aside: am I wrong or there's the .bmp file of a partial render
> (chess2.pov) in the advanced folder?

I have that too.


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From: Jan Walzer
Subject: Re: sphere_sweep bug
Date: 5 Sep 2001 15:40:56
Message: <3b967fc8@news.povray.org>
> Just as an aside: am I wrong or there's the .bmp file of a partial render
> (chess2.pov) in the advanced folder?

Ack

--
Jan Walzer <jan### [at] lzernet>


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From: Nathan Kopp
Subject: Re: sphere_sweep bug
Date: 5 Sep 2001 17:49:25
Message: <3b969de5$1@news.povray.org>
"JRG" <jrg### [at] hotmailcom> wrote...
> POV-Ray 3.5b1 Windows ME AMD Athlon 1000 256 Megs
>
> Too bad the sphere_sweep bug is still there:

You'll be happy to know that I can finally reporduce this on my machine,
which means I should be able to find a soluiton.  :-)

-Nathan


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From: Nathan Kopp
Subject: Re: sphere_sweep bug
Date: 18 Sep 2001 23:00:33
Message: <3ba80a51@news.povray.org>
"Nathan Kopp" <nat### [at] koppcom> wrote...
>
> "JRG" <jrg### [at] hotmailcom> wrote...
> > POV-Ray 3.5b1 Windows ME AMD Athlon 1000 256 Megs
> >
> > Too bad the sphere_sweep bug is still there:
>
> You'll be happy to know that I can finally reporduce this on my machine,
> which means I should be able to find a soluiton.  :-)

I take that back... now I can't duplicate it anymore.  :-(  It happened to
me twice, but now it won't happen again.

-Nathan


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From: JRG
Subject: Re: sphere_sweep bug
Date: 25 Sep 2001 14:44:53
Message: <3bb0d0a5@news.povray.org>
In my example if you add another object, like a box or a plane, the bug
dissappears, which is really strange. The problem is that I have other
scenes where I can't get rid of this...

--
Jonathan
"Nathan Kopp" <nat### [at] koppcom> ha scritto nel messaggio
news:3ba80a51@news.povray.org...
>
> "Nathan Kopp" <nat### [at] koppcom> wrote...
> >
> > "JRG" <jrg### [at] hotmailcom> wrote...
> > > POV-Ray 3.5b1 Windows ME AMD Athlon 1000 256 Megs
> > >
> > > Too bad the sphere_sweep bug is still there:
> >
> > You'll be happy to know that I can finally reporduce this on my machine,
> > which means I should be able to find a soluiton.  :-)
>
> I take that back... now I can't duplicate it anymore.  :-(  It happened to
> me twice, but now it won't happen again.
>
> -Nathan
>
>
>


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