#include "colors.inc"    
        
        
global_settings{max_trace_level 20}
        
                                                     
background {color White}                                                      
                                                       
                                                       
camera { angle 3.2
        location <1000,1000,1000>
        look_at  <-0,0.2,0>  
        up    < 0, 1, 0>
        right   < 1, 0, 0>
       }
                                        
light_source { <100,90,120>
               color Gray
               shadowless
             }   
             
light_source { <50,70,90>
               color Gray
               shadowless
             }   

      
/////////////////////////////////////////////////////////////////////////////

#declare ss0 = sphere{< 10, 10, 10>,24}    ///small spheres
#declare ss1 = sphere{< 10,-10,-10>,24}          
#declare ss2 = sphere{<-10,-10, 10>,24}    
#declare ss3 = sphere{<-10, 10,-10>,24} 

#declare bs0 = sphere{< 10, 10, 10>,26}    ///big spheres
#declare bs1 = sphere{< 10,-10,-10>,26}          
#declare bs2 = sphere{<-10,-10, 10>,26}    
#declare bs3 = sphere{<-10, 10,-10>,26}     
/////////////////////////////////////////////////////////////////////////////
                
                
                
                
                
                
union {////////////////BIG UNION
         
            

      
#declare digitsum1 =
union
{
///1
difference
{
object{ss0} 
union{ object{bs1} object{bs2} object{bs3} }  
}

///2
difference
{
object{ss1} 
union{ object{bs0} object{bs2} object{bs3} }  
}

///4
difference
{
object{ss2} 
union{ object{bs0} object{bs1} object{bs3} }  
}

///8
difference
{
object{ss3} 
union{ object{bs0} object{bs1} object{bs2} }  
}   
pigment{color rgbt<0.95,0.95,0.95,0.95>} 
//pigment{color Red}  
}
object{digitsum1}

     
         
     
#declare digitsum2 =
union
{    
///3
difference
{
intersection{ object{ss0} object{ss1} }   
union{ object{bs2} object{bs3} }                                         
}   

///5
difference
{
intersection{ object{ss0} object{ss2} }   
union{ object{bs1} object{bs3} }                                         
}   

///6
difference
{
intersection{ object{ss1} object{ss2} }   
union{ object{bs0} object{bs3} }                                         
}     

///9
difference
{
intersection{ object{ss0} object{ss3} }   
union{ object{bs1} object{bs2} }                                         
}    

///10
difference
{
intersection{ object{ss1} object{ss3} }   
union{ object{bs0} object{bs2} }                                         
}
   
///12
difference
{
intersection{ object{ss2} object{ss3} }   
union{ object{bs0} object{bs1} }                                        
}  
pigment{color rgbt<0.9,0.9,0.9,0.9>} 
//pigment{color Red}                   
}                  
object{digitsum2}                  
                     
                     
          
           
#declare digitsum3 =
union
{
///7
difference
{    
intersection{ object{ss0} object{ss1} object{ss2} }  
object{bs3} 
}  
       
///11
difference
{    
intersection{ object{ss0} object{ss1} object{ss3} }  
object{bs2} 
}         
          
///13
difference
{    
intersection{ object{ss0} object{ss2} object{ss3} }  
object{bs1} 
}         
  
///14
difference
{    
intersection{ object{ss1} object{ss2} object{ss3} }  
object{bs0} 
}  
//pigment{color rgbt<0.85,0.85,0.85,0.85>} 
pigment{color Red} 
}          
object{digitsum3}  


///15
intersection{ object{ss0} object{ss1} object{ss2} object{ss3} 
pigment{color rgbt<0.8,0.8,0.8,0.8>}
//pigment{color Red}     
}      
         
         
         


rotate -33*z  
rotate 35*x    
rotate 5*y            
rotate <0,clock*5,0>
}/////////////////BIG UNION