POV-Ray : Newsgroups : povray.unofficial.patches : Strange light effect! Server Time
4 Dec 2024 21:14:51 EST (-0500)
  Strange light effect! (Message 1 to 3 of 3)  
From: danyolgiax
Subject: Strange light effect!
Date: 5 May 2006 14:45:00
Message: <web.445b9c22d421f93858dbbb6b0@news.povray.org>
Hi!

I've got an array of ships with engines at full throttle... when I render
the scene I've got this strange effect:

http://img278.imageshack.us/img278/3478/ships2nu.jpg

the ship at the top is ok! but the flames of the others ships looks
innaturals!

Why?

I use MegaPOV 1.21 with those render parameters:

-w800 -h450 +a0.3

global_settings {

    assumed_gamma 1 // tweak if the image is too pale
    max_trace_level 20

       radiosity {
            count 35 error_bound 1.8
            recursion_limit 1
            low_error_factor .5
            gray_threshold 0
            minimum_reuse 0.015
            brightness 1
            adc_bailout 0.01/2
            normal on
            media off
        }
 }

media {
  scattering {
       1, // isotropic
       rgb 0.02
  }
}

This is the flame:

#declare carFlame2=
union
{
    cone {
       <0,0,0>,0.5,<0,0,1>,0.3
       hollow
       pigment {rgbt <0,0,0,1>}
       interior {
          media
         { emission 4
           density
           { spherical density_map
             { [0 rgb 0]
               [0.4 rgb <1,0,0>]
               [0.8 rgb <1,0,0>]
               [1 rgb <1,0,0>]
             }
           }
         }
       }
    }


    cone {
       <0,0,0.4>,0.3,<0,0,1>,0.25
       hollow

       pigment {rgbt <0,0,0,1>}
       interior {
          media
         { emission 10
           density
           { spherical density_map
             { [0 rgb 0]
               [0.4 rgb <1,1,0.502>]
               [0.8 rgb <1,1,0.502>]
               [1 rgb <1,1,0.502>]
             }
           }
         }
       }
    }

    cylinder {
       <0,0,0.95><0,0,1>,0.2
       pigment {rgbf <1,1,1,0.1>}
       finish{ambient 1}

    }
    cylinder {
       <0,0,0.96><0,0,1>,0.21
        hollow
       pigment {rgb <0,0,0,>}


    }

}

Thanks!

Dox


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From: Christoph Hormann
Subject: Re: Strange light effect!
Date: 6 May 2006 02:00:11
Message: <e3hdv9$jc5$1@chho.imagico.de>
danyolgiax wrote:
> Hi!
> 
> I've got an array of ships with engines at full throttle... when I render
> the scene I've got this strange effect:

What does this have to do with MegaPOV?  Unless the scene renders 
differently with MegaPOV than with official POV-Ray this is the wrong 
group for such question.

BTW you should probably better describe what you think is wrong with the 
render results.

Christoph

-- 
POV-Ray tutorials, include files, Landscape of the week:
http://www.imagico.de/ (Last updated 04 May. 2006)
MegaPOV with mechanics simulation: http://megapov.inetart.net/


Post a reply to this message

From: danyolgiax
Subject: Re: Strange light effect!
Date: 6 May 2006 18:05:00
Message: <web.445d1c9659b8df9958dbbb6b0@news.povray.org>
Hi!

I've used MegaPOV because in the scene there's a motion blur!

The engine flames of those two ships at the bottom are cartoon like! and are
very different from the upper ship! there's no gradient... only white and
red!

can u help me?

thanks!

Christoph Hormann <chr### [at] gmxde> wrote:
> danyolgiax wrote:
> > Hi!
> >
> > I've got an array of ships with engines at full throttle... when I render
> > the scene I've got this strange effect:
>
> What does this have to do with MegaPOV?  Unless the scene renders
> differently with MegaPOV than with official POV-Ray this is the wrong
> group for such question.
>
> BTW you should probably better describe what you think is wrong with the
> render results.
>
> Christoph
>
> --
> POV-Ray tutorials, include files, Landscape of the week:
> http://www.imagico.de/ (Last updated 04 May. 2006)
> MegaPOV with mechanics simulation: http://megapov.inetart.net/


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