Dear all,

 I started rendering a simple scene with the Radiosity this week.
Would it be possible to apply both the Radiosity and the Photon mapping at
the same scene, for example, a scene comprising an almost transparent glass
cylinder on top of a reflecting plastic gray floor?
If possible, how would I change the global_settings?
The samples I tried below did not work well enough.

Any comments would be welcome!


-------Part of my First try -----
//-------------------------------------------
// radiosity test together with PHOTON Mapping
global_settings {
    radiosity {
      pretrace_start 0.08
      pretrace_end   0.04
      count 35

      nearest_count 5
      error_bound 1.8
      recursion_limit 3

      low_error_factor 0.5
      gray_threshold 0.0
      minimum_reuse 0.015
      brightness 1

      adc_bailout 0.01/2
    }
  }
//------------------------------------------------
#declare Photons=on;

global_settings {
  assumed_gamma 1.0
  max_trace_level 50
  #if (Photons)          // global photon block
    photons {
      spacing 0.01                 // specify the density of photons
      //count 100000               // alternatively use a total number of
photons

      //gather min, max            // amount of photons gathered during
render [20, 100]
      //media max_steps [,factor]  // media photons
      //jitter 1.0                 // jitter phor photon rays
      //max_trace_level 5          // optional separate max_trace_level
      //adc_bailout 1/255          // see global adc_bailout
      //save_file "filename"       // save photons to file
      //load_file "filename"       // load photons from file
      //autostop 0                 // photon autostop option
      //radius 10                  // manually specified search radius
      // (---Adaptive Search Radius---)
      //steps 1
      //expand_thresholds 0.2, 40
    }

  #end
}

// ----------------------------------------

#declare M_Glass=    // Glass material
material {
  texture {
    pigment {rgbt 1}
    finish {
      ambient 0.0
      diffuse 0.09
      specular 0.50
      roughness 0.013
      reflection {
        0.05, 1.0
        fresnel on
      }
      conserve_energy
    }
  }
  interior {
    ior 1.50
    fade_power 100
    fade_distance 0.9
    fade_color <0.5,0.8,0.6>
  }
}



// Light1
light_source {
   <27.2831, 56.2092, 50.7291>
   color rgb <1, 1, 1> *1.2
   photons {           // photon block for a light source
    refraction on
    reflection on
           }
}


//
light_source {
   <-14.943, 29.7022, 16.4799>
   color rgb <1, 1, 1> *1.15
   photons {           // photon block for a light source
    refraction on
    reflection on
     }
}
..... deleted  ...

object { Object1 material { M_Glass}
  photons {  // photon block for an object
    target 1.0
    refraction on
    reflection on
     collect off
         }
  }
..... deleted  ...

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Sunny <sjy### [at] hanmailnet> wrote:
> Would it be possible to apply both the Radiosity and the Photon mapping at
> the same scene

  Why wouldn't it be possible? Is there something which would make them
mutually exclusive?

> If possible, how would I change the global_settings?

  Just putting a radiosity block and a photons block in the global_settings
block should do it.

-- 
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}//  - Warp -

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Sunny nous apporta ses lumieres ainsi en ce 2004-12-30 03:41... :

>Dear all,
>
> I started rendering a simple scene with the Radiosity this week.
>Would it be possible to apply both the Radiosity and the Photon mapping at
>the same scene, for example, a scene comprising an almost transparent glass
>cylinder on top of a reflecting plastic gray floor?
>If possible, how would I change the global_settings?
>The samples I tried below did not work well enough.
>
>Any comments would be welcome!
>  
>
Use a single global_settings block containing both radiosity and photons 
blocks:

global_settings{
    radiosity{
       <radiosity elements>
    }
    photons{
       <photons elements>
    }
}

Alain

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Dear Warp and Alain,

 I really appreciate your help and comments in this regard.
Now, it's working perfect with a reasonably short rendering time.
I was afraid it might take tremendous amount of time. Thanks.

Sunny

"Sunny" <sjy### [at] hanmailnet> wrote:
> Dear all,
>
>  I started rendering a simple scene with the Radiosity this week.

Post a reply to this message