Kevork Abadjian wrote:
> 
> I was looking at the two replies posted to my message and as far as I can see
> Ken explained the situation even better than I could; but he stopped just short
> of a suggestion to fix the problem.
> 
> there is nothing special about the source, I am using the std seen file and
> just and std texture for glass and a switch to toggle on an off the photones.

Stripped down and rearranged for clarity and examples sake I offer the
following two examples of correct and incorrect behavior. Which is which
I leave to the person who renders it to decide but it should be as obvious
as obvious can be.

  camera{
  location  <0.0, 0, -5.0>
  look_at   <0.0, 0.0,  0.0>}


  light_source{<0,440,-300>rgb 1 }


 plane { y,-3 pigment{ rgb 1}}
 plane { z, 3 pigment{ rgb 1}}

 #declare Ball1 = 
 sphere{0,0.4 
  pigment{rgbf<1,1,1,0.97>}
   translate<-0.4,-0.2,0>
    interior {ior 1.99}
 }


 #declare Ball2 = 
 sphere{0,0.4 
  pigment{rgbf<0,0,1,0.97>}
   translate<-0.4, 0.2,0>
    interior {ior 1.19}
 }

#declare cnt=0
       merge {       
#while (cnt < 4)
       object {Ball1 rotate z*90*cnt}
       object {Ball2 rotate z*90*cnt}         
       #declare cnt=cnt+1 
  #end  
 translate x*1.25
}

#declare cnt=0

#while (cnt < 4)
     merge {       
       object {Ball1 rotate z*90*cnt}
       object {Ball2 rotate z*90*cnt}         
 translate x*-1.35 }       
       #declare cnt=cnt+1 
       
  #end  



-- 
Ken Tyler

mailto://tylereng@pacbell.net

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