// La fenêtre de Viviani
#include "colors.inc"
#include "stones.inc"
#include "glass.inc"

camera {location <2,1.5,-7>
look_at <-0.3,0.2,-1>}

light_source {<-5,5,-8> White }
light_source {<10,5,-10> White}

//la pièce
union {
plane { z , 7 pigment{ Cyan}}
plane { y , -3 pigment{ rgb <0,0.8,1>}}
plane { x , -8 pigment{ Cyan} }
rotate <0,0,-3.2>
}

#declare sph=sphere { 0,2};
#declare cyl=cylinder { <0,-2,0>,<0,2,0>,1};

union{
object { sph
translate <-1,0,0>
clipped_by{cyl}
pigment { rgb <1,0.2,0.2>*1.6}
}
object { cyl
clipped_by{ sph
translate <-1,0,0>
}
pigment { rgb <1,1,0>*1.6}
}

// la sphère transparente
intersection { object {sph
translate <-1,0,0>
clipped_by{ object{cyl inverse}}
}
object {sph scale 0.995 inverse
translate <-1,0,0>
clipped_by{ object{cyl inverse}}
}
texture { T_Glass4 }
interior { ior Air_Ior }
} // fin intersection

intersection { cone { <1,0,0>,0,<1,2.1,0>,2.1}
cone { <1,0,0>,0,<1,2.1,0>,2.1 translate 0.02*y inverse }
texture { T_Glass3 }
interior { ior Crown_Glass_Ior}//ior Air_Ior }
finish { ambient 0.1 reflection 0.08 specular 0.2}
}
// le support
box { <-2.5,-3,-1.5>,<0.5,-2,1.5>
texture { T_Stone16 }
} // fin box
finish {reflection 0.5 ambient 0.8 diffuse 0.5 specular 0.5 }
rotate <0,25,-0.9>
}

Début