// 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 <1, 0, 0>  // light's color }       light_source {   <50, 40, -60>            // light's position (translated below)   color rgb <0, 1, 0>  // light's color }  light_source {   <0, 190, -60>            // light's position (translated below)   color rgb <0, 0, 1.1>  // light's color    }  // ----------------------------------------  plane {   y, -1.3   pigment { color rgb <0.7,0.5,0.3> } }  #declare ba=5.7;  //linksunten rechst oben   flach #declare bb=7.3;  //linksoben rechtunten         //6 , 9 ,    , 15 #declare bc=5.5;    //links unten rechts oben   steil #declare b1=max(ba,bb,bc)+2;  #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)  cos(a/r)*r  -r #end   */     /* //rim armchair #declare r=(bb-6)/pi*3; #macro ab2y(b,a) sin(a/r)*r    #end #macro ab2x(b,a)  b  #end #macro ab2z(b,a)  cos(a/r)*r  -r #end      */  /*   //ribbon #macro ab2x(a,b) a  #end #macro ab2y(a,b)  b  #end #macro ab2z(a,b)  0  #end         */   #declare ha=0.92; #declare hu=1.3; #declare hr=sqrt(ha*ha+hu*hu);       //rim zizag #declare r=1.68;//3.135; #macro ab2x(a,b) sin((hu*a-ha*b)/hr/r)*r  #end #macro ab2y(a,b)  (ha*a+hu*b)/hr  #end #macro ab2z(a,b)  cos((hu*a-ha*b)/hr/r)*r -r #end             /* //ribbon #declare r=3;//1.68;//3.135; #macro ab2x(a,b) ((hu*a-ha*b)/hr/r)*r  #end #macro ab2y(a,b)  (ha*a+hu*b)/hr  #end #macro ab2z(a,b)  0 #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)  cos(a/r)*r  -r #end    */     // m,n -> x,y /*    ****  *    * *      *  *    *   ****  */  #macro kugel(m,n)        #if ( (abs(m)<ba) & (abs(n)<bb) & (abs(m+n-0.5)<bc) ) // #if (abs(m+n)<ba)                 sphere{<ab2x(m+n/2,n*s),ab2y(m+n/2,n*s),ab2z(m+n/2,n*s)>,0.2}    //    #end     #end         #end  #macro zylinder(m,n,m1,n1)        #if ( (abs(m)<ba) & (abs(n)<bb) & (abs(m+n-0.5)<bc) ) #if ( (abs(m1)<ba) & (abs(n1)<bb) & (abs(m1+n1-0.5)<bc) )                 cylinder{<ab2x(m+n/2,n*s),ab2y(m+n/2,n*s),ab2z(m+n/2,n*s)>,<ab2x(m1+n1/2,n1*s),ab2y(m1+n1/2,n1*s),ab2z(m1+n1/2,n1*s)>,0.17}        #end     #end         #end  union{     #declare m = -b1; #while (m <= b1) #declare n = -b1; #while (n <= b1)  kugel(m,n) zylinder(m,n,m-1/3,n+2/3) kugel(m-1/3,n+2/3) zylinder(m-1/3,n+2/3,m-1,n+1) zylinder(m-1/3,n+2/3,m,n+1)  #declare n = n+1;   // increment our counter #end #declare m = m+1;   // increment our counter #end           texture {             pigment {                 color rgb <1,1,1>*0.7             }             finish{               specular 0.6             }          }      scale 0.2 //08 //2    //  translate 0.4*z      rotate <90,45,0>      rotate <0,90,0>      rotate <-20,0,0>    //  translate z         } 

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