// PoVRay 3.7 Scene File " ... .pov"
// author:  ...
// date:    ...

//+w1280 +h640 +a0.3 +am2 +bm2 +bs8 +wt6
//--------------------------------------------------------------------------
#version 3.8;
global_settings{ assumed_gamma 1.0 }
//--------------------------------------------------------------------------
//---------------------------------------------------------------------------------
// camera -------------------------------------------------------------------------
  #declare Camera_Location = < 0.00, 2.00, -12.00> ;  // front view
  #declare Camera_Look_At  = < 0.00, 1.00,  0.00> ;
  #declare Camera_Angle    =  75 ;
//--------------------------------------------------------------------------
camera{  
        location Camera_Location
        right    x*image_width/image_height
        angle    Camera_Angle
        look_at  Camera_Look_At
      }
// sun ---------------------------------------------------------------------
light_source{< 3000,3000,-3000> color rgb<1,1,1>*0.9}               // sun 
light_source{ Camera_Location   color rgb<0.9,0.9,1>*0.1 shadowless}// flash
// sky ---------------------------------------------------------------------
sky_sphere { pigment { gradient <0,1,0>
                       color_map { [0.00 rgb <0.6,0.7,1.0>]
                                   [0.35 rgb <0.1,0.0,0.8>]
                                   [0.65 rgb <0.1,0.0,0.8>]
                                   [1.00 rgb <0.6,0.7,1.0>] 
                                 } 
                       scale 2         
                     } // end of pigment
           } //end of skysphere
// ground -------------------------------------------------------------------------
plane{ <0,1,0>, -2
       texture{ pigment{ checker color rgb<1,1,1>*0.28 color rgb<1,1,1>*0.25}
              //normal { bumps 0.75 scale 0.025}
              //finish { phong 0.1}
              } // end of texture
     } // end of plane
//---------------------------------------------------------------------------------
//---------------------------- objects in scene -----------------------------------
//---------------------------------------------------------------------------------

//----------------------------------------Difference sphere/disc
#local Object =
difference {
  sphere {<0,0,0>, 1.0}
  disc {<0,0,0>, y, 1.1}
}
//----------------------------------------
#declare Min = min_extent(Object);
#declare Max = max_extent(Object);
#debug concat("\n  min_extent Object: <",vstr(3, Min, ", ", 0,3),">\n")
#debug concat("  max_extent Object: <",vstr(3, Max, ", ", 0,3),">\n\n")
//----------------------------------------

union {
  object {
    Object
    pigment {rgb 1}
  }
  sphere {<0,0,0>, 0.1 pigment {rgb <1,0,0>} translate <0.0, Min.y, 0.0>}
  translate -7.5*x
}

//----------------------------------------Difference sphere/plane
#local Object =
difference {
  sphere {<0,0,0>, 1.0}
  plane {<0,1,0>, 0.0}
}
//----------------------------------------
#declare Min = min_extent(Object);
#declare Max = max_extent(Object);
#debug concat("\n  min_extent Object: <",vstr(3, Min, ", ", 0,3),">\n")
#debug concat("  max_extent Object: <",vstr(3, Max, ", ", 0,3),">\n\n")
//----------------------------------------

union {
  object {
    Object
    pigment {rgb 1 transmit 0.5}
  }
  sphere {<0,0,0>, 0.1 pigment {rgb <1,0,0>} translate <0.0, Min.y, 0.0>}
  translate -4.5*x
}

//----------------------------------------Difference sphere/box
#local Object =
difference {
  sphere {<0,0,0>, 1.0}
  box {<-1.1, -1.1, -1.1>,<1.1, 0.0, 1.1>}
}
//----------------------------------------
#declare Min = min_extent(Object);
#declare Max = max_extent(Object);
#debug concat("\n  min_extent Object: <",vstr(3, Min, ", ", 0,3),">\n")
#debug concat("  max_extent Object: <",vstr(3, Max, ", ", 0,3),">\n\n")
//----------------------------------------

union {
  object {
    Object
    pigment {rgb 1}
  }
  sphere {<0,0,0>, 0.1 pigment {rgb <1,0,0>} translate <0.0, Min.y, 0.0>}
  translate -1.5*x
}

//----------------------------------------Intersection sphere/disc
#local Object =
intersection {
  sphere {<0,0,0>, 1.0}
  disc {<0,0,0>, -y, 1.1}
}
//----------------------------------------
#declare Min = min_extent(Object);
#declare Max = max_extent(Object);
#debug concat("\n  min_extent Object: <",vstr(3, Min, ", ", 0,3),">\n")
#debug concat("  max_extent Object: <",vstr(3, Max, ", ", 0,3),">\n\n")
//----------------------------------------

union {
  object {
    Object
    pigment {rgb 1 transmit 0.5}
  }
  sphere {<0,0,0>, 0.1 pigment {rgb <1,0,0>} translate <0.0, Min.y, 0.0>}
  translate 1.5*x
}

//----------------------------------------Intersection sphere/plane
#local Object =
intersection {
  sphere {<0,0,0>, 1.0}
  plane {<0,-1,0>, 0.0}
}
//----------------------------------------
#declare Min = min_extent(Object);
#declare Max = max_extent(Object);
#debug concat("\n  min_extent Object: <",vstr(3, Min, ", ", 0,3),">\n")
#debug concat("  max_extent Object: <",vstr(3, Max, ", ", 0,3),">\n\n")
//----------------------------------------

union {
  object {
    Object
    pigment {rgb 1 transmit 0.5}
  }
  sphere {<0,0,0>, 0.1 pigment {rgb <1,0,0>} translate <0.0, Min.y, 0.0>}
  translate 4.5*x
}

//----------------------------------------Intersection sphere/box
#local Object =
intersection {
  sphere {<0,0,0>, 1.0}
  box {<-1.1, 0.0, -1.1>,<1.1, 1.1, 1.1>}
}
//----------------------------------------
#declare Min = min_extent(Object);
#declare Max = max_extent(Object);
#debug concat("\n  min_extent Object: <",vstr(3, Min, ", ", 0,3),">\n")
#debug concat("  max_extent Object: <",vstr(3, Max, ", ", 0,3),">\n\n")
//----------------------------------------

union {
  object {
    Object
    pigment {rgb 1 transmit 0.5}
  }
  sphere {<0,0,0>, 0.1 pigment {rgb <1,0,0>} translate <0.0, Min.y, 0.0>}
  translate 7.5*x
}