Am I the only one who finds media utterly incomprehensible? I want to make a
glow effect, with a bright center and a dimmer exterior. So far, I've only
succeeded in making a dark circle. What am I doing wrong?

*******


#include "colors.inc"
#include "skies.inc"

sky_sphere {S_Cloud1}

fog {distance 250
     color rgbf<1,1,1,1>
     fog_type 2
     fog_offset -1
     fog_alt 15}

camera {location <15,5,0>
        look_at <0,3,0>}

light_source {<15,5,0> color White}

plane {y,0 pigment {Tan}}

sphere { <-2,2,0>, 1
  pigment { color rgbf<1, 1, 1, .9> }
  finish { ambient 0 diffuse 0 }
  interior {
    media {     emission 1
  samples 1, 10
  density {
    spherical
    color_map {
      [0.0 color rgb <0, 0, 0>]
      [0.5 color rgb <.8, .8, .8>]
      [1.0 color rgb <1, 1, 1>]
    }
  }
}  }translate <0,3,0> hollow   }

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"Jason Jong" <nos### [at] redshiftcom> wrote in message
news:3b43ba2a$1@news.povray.org...
> Am I the only one who finds media utterly incomprehensible? I want to make
a
> glow effect, with a bright center and a dimmer exterior. So far, I've only
> succeeded in making a dark circle. What am I doing wrong?

I also struggle with media, but in this case I can help

> sphere { <-2,2,0>, 1

Create your media container at the origin and translate as required

sphere {
 <0,0,0>,1
 .....
 translate <-2,5,0>
}

>   pigment { color rgbf<1, 1, 1, .9> }
>   finish { ambient 0 diffuse 0 }
>   interior {
>     media {     emission 1
>   samples 1, 10

You may want to tweak the sampling parameters, it looks a little grainy

>   density {
>     spherical
>     color_map {
>       [0.0 color rgb <0, 0, 0>]
>       [0.5 color rgb <.8, .8, .8>]
>       [1.0 color rgb <1, 1, 1>]
>     }
>   }
> }  }translate <0,3,0> hollow   }
>

Gail
*************************************************************************
* gsh### [at] monotixcoza                *   Step into the abyss,           *
* http://www.rucus.ru.ac.za/~gail/   *   and let go.          Babylon 5 *
*************************************************************************
* The difficult we do immediately, the impossible takes a little longer *
*************************************************************************

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Gail Shaw <gsh### [at] monotixcoza> wrote:
:> sphere { <-2,2,0>, 1

: Create your media container at the origin and translate as required

  And the sphere has to be hollow.

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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"Warp" wrote:
>   And the sphere has to be hollow.

It *was* hollow. Try reading the rest of the code too.

Rune
--
3D images and anims, include files, tutorials and more:
Rune's World:    http://rsj.mobilixnet.dk (updated June 26)
POV-Ray Users:   http://rsj.mobilixnet.dk/povrayusers/
POV-Ray Webring: http://webring.povray.co.uk

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Rune <run### [at] mobilixnetdk> wrote:
: It *was* hollow. Try reading the rest of the code too.

  It was quite hidden :P

  Writint obfuscated code doesn't help to read code... :)

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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