Description

// Persistence of Vision Ray Tracer Scene Description File
// File: ?.pov
// Vers: 3.6
// Desc: Basic Scene Example
// Date: mm/dd/yy
// Auth: ?
//
         

#version 3.6;

#include "colors.inc"

global_settings {
  assumed_gamma 2.1    
  // used in global_settings, sets an overall brightness/ambient light level in the scene
  ambient_light color rgb <1,1,1>/10
}

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

camera {
  location  <+0.3, 0.5, -4.0>     // -0.2  0.0  +0.2    //  -0.3 -0.1 +0.1 +0.3
  direction 1.5*z
  right     x*image_width/image_height
  look_at   <0.0, 0.0,  0.0>
}

sky_sphere {
  pigment {
    gradient y
    color_map {
      [0.0 rgb <0.6,0.7,1.0>]
      [0.7 rgb <0.0,0.1,0.8>]
    }
  }
}

light_source {
  <-50, 40, -60>            // light's position (translated below)
  color rgb <0, 0, 0>  // light's color
}     

light_source {
  <50, 40, -60>            // light's position (translated below)
  color rgb <0, 0, 0>  // light's color
}

light_source {
  <0, 190, -60>            // light's position (translated below)
  color rgb <0, 0, 0>  // light's color
  
}

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

plane {
  y, -1.3
  pigment { color rgb <0,0,0> }
}

#declare ba=15;
#declare bb=15;  //6 , 9 ,    , 15
#declare b1=max(ba,bb);

#declare s=sqrt(3)/2;        

  
//tube armchair
#declare bb=bb+6;  //6 , 9 ,    , 15
#declare r=(bb-6)/pi;
#macro ab2y(b,a) sin(a/r)*r  
#end
#macro ab2x(b,a)  b 
#end
#macro ab2z(b,a)  -r
#end
 

    /*
//rim armchair
#declare r=(bb-6)/pi*3;
#macro ab2y(b,a)   
#end
#macro ab2x(b,a)  b 
#end
#macro ab2z(b,a)    -r
#end
  */

  /*
//ribbon
#macro ab2x(a,b) a 
#end
#macro ab2y(a,b)  b 
#end
#macro ab2z(a,b)  0 
#end        
 */

    /*
//rim zizag
#declare r=(ba*s)/pi*3;
#macro ab2x(a,b) sin(a/r)*r 
#end
#macro ab2y(a,b)  b 
#end
#macro ab2z(a,b)  -r
#end        
  */

    /*   
//tube zizag
#declare ba=ba+2;
#declare r=(ba*s)/pi;
#macro ab2x(a,b) sin(a/r)*r 
#end
#macro ab2y(a,b)  b 
#end
#macro ab2z(a,b)    -r
#end

  */   

union{   

#declare m = -b1;
#while (m < b1)
#declare n = -b1;
#while (n < b1)
//#declare BallCount = 0;
// #while (BallCount < 2*pi)
                #declare a0=(n*2+m)*s   ;
                #declare b0=m*1.5        ;
                
#if  ((a0<ba) & (a0>-ba) & (b0<bb) & (b0>-bb) )
        union{ 
                          

                #if (b0>-bb+2)
                sphere {< ab2x(a0,b0), ab2y(a0,b0),ab2z(a0,b0)>, 0.5         }
                #end
                #if ((b0<bb-2) & (b0>-bb+2))
                cylinder {< ab2x(a0,b0), ab2y(a0,b0),ab2z(a0,b0)>,< ab2x(a0,b0+1), ab2y(a0,b0+1),ab2z(a0,b0+1)>,  0.35 }
                #end
                #if (b0<bb-2)
                sphere {< ab2x(a0,b0+1), ab2y(a0,b0+1),ab2z(a0,b0+1)>, 0.5         }
                
                #if (a0+s<ba)
                cylinder {< ab2x(a0,b0+1), ab2y(a0,b0+1),ab2z(a0,b0+1)>,< ab2x(a0+s,b0+1.5), ab2y(a0+s,b0+1.5),ab2z(a0+s,b0+1.5)>,  0.35 }
                #end
                #if (a0-s>-ba)
                cylinder {< ab2x(a0,b0+1), ab2y(a0,b0+1),ab2z(a0,b0+1)>,< ab2x(a0-s,b0+1.5), ab2y(a0-s,b0+1.5),ab2z(a0-s,b0+1.5)>,  0.35 }
                #end
                #end
        }
        #end
               //  rotate <0,BallCount*60,0>}
               //  rotate <0,BallCount*60-30,0>}
// #declare BallCount = BallCount+pi/3;   // increment our counter
//  #end
#declare n = n+1;   // increment our counter
#end
#declare m = m+1;   // increment our counter
#end

         texture {
            pigment {
                color rgb <0,0,0>*0.7
            }
            finish{
              specular 0.6
            }
         }
     scale 0.08 //2
   //  translate 0.4*z
     rotate <90,45,0>
     rotate <-20,0,0>
   //  translate z        
}

Conditions d’utilisation

Moi, propriétaire des droits d’auteur sur cette œuvre, la place dans le domaine public. Ceci s'applique dans le monde entier. Dans certains pays, ceci peut ne pas être possible ; dans ce cas : J’accorde à toute personne le droit d’utiliser cette œuvre dans n’importe quel but, sans aucune condition, sauf celles requises par la loi.