POV-Ray : Newsgroups : povray.text.scene-files : Multiple reflections testing Server Time
28 Jul 2024 22:25:38 EDT (-0400)
  Multiple reflections testing (Message 1 to 1 of 1)  
From: Bob Hughes
Subject: Multiple reflections testing
Date: 9 Feb 1999 14:30:38
Message: <36C08CB7.18DECD65@aol.com>
//BEGIN (watchout for line wrapping! check before using)

// Persistence of Vision Ray Tracer Scene Description File
// File: rflctest.pov
// Vers: 3.1
// Desc: A simple check of multiple reflections using 2 mirrored planes
// Date: 99.11
// Auth: Bob Hughes, mailto:inv### [at] aolcom?POV

//these are the pigment, reflection, ambient, diffuse numbers, make
changes here.
//please note that antialising is going to make the very small "last"
reflections
//appear blended with the background color and that this isn't the same
fading.
#declare MP1=<1,1,1>*0; //pigment used for behind-camera mirror
#declare MR1=<1,1,1>*1; //reflection vector
#declare ME1=1; //reflection_exponent
#declare RA1=.1; //ambient
#declare RD1=.6; //diffuse
#declare MP2=<1,1,1>*0; //pigment used for behind-object mirror
#declare MR2=<1,1,1>*1; //reflection vector
#declare ME2=1; //reflection_exponent
#declare RA2=.1; //ambient
#declare RD2=.6; //diffuse

global_settings {
//ambient_light <1.25,1.25,1.25>
max_trace_level 20 //high enough number for plenty of multiple
reflections
 }

//background {color red 0.5 green 0.65 blue 0.55}

//light up the test object well
light_source {<50,15,0> color rgb 1 shadowless}
light_source {<-50,-15,0> color rgb 1 shadowless}

//camera placement
#declare LCX = 2;
#declare LCY = 0;
#declare LCZ = -20;
// rotation vectors (adjust for varying placements)
#declare RCX = 0;
#declare RCY = 0;
#declare RCZ = 0;

camera
{
  location  <LCX,LCY,LCZ>
  angle 50
  up 1*y right 2*x //custom aspect ratio, ie. 240x120 res.
	rotate RCX*x rotate RCY*y rotate RCZ*z
  look_at   <LCX+5, 0, 0>
}

//2 mirrors facing each other, one behind camera and one in behind
object
plane {z,-20 pigment {rgb MP1} //behind camera
 finish {ambient RA1 diffuse RD1 reflection MR1 reflection_exponent ME1
  //reflection_blur .001 reflection_samples 1
  }
 rotate <0,45,0> translate -1*x}
plane {z,10 pigment {rgb MP2} //behind object
 finish {ambient RA2 diffuse RD2 reflection MR2 reflection_exponent ME2
  //reflection_blur .001 reflection_samples 1
  }
 rotate <0,45,0> translate -1*x}

//test object
union {
sphere {0,1 pigment {red 1}
 translate 3*y
}
sphere {0,1 pigment {green 1}
 translate 1.5*y
}
sphere {0,1 pigment {blue 1}
 translate 0*y
}
sphere {0,1 pigment {rgb 1}
 translate -1.5*y
}
sphere {0,1 pigment {rgb 0}
 translate -3*y
}
 scale 1.5 translate -2*x
}

//END

-- 
 omniVERSE: beyond the universe
  http://members.aol.com/inversez/POVring.htm
=Bob


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