#include<cstdlib>
#include<iostream>
#include<fstream>
#include<math.h>

int main()
{

using namespace std;

const int nx=10,ny=10,nz=10,n=1000,nfiles=10;
const float abox=10.0,bbox=10.0,cbox=10.0;
const float rad=0.5;

char filename[7];
int iball;

float x[n],y[n],z[n];
float red,green,blue;

for(int ifile=1;ifile<=nfiles;ifile++)
{

sprintf(filename,"%d.pov",ifile);

iball=-1;
for(int i=0;i<=nx-1;i++)
{
for(int j=0;j<=ny-1;j++)
{
for(int k=0;k<=nz-1;k++)
{
iball=iball+1;
x[iball]=abox*float(i)/float(nx);
y[iball]=bbox*float(j)/float(ny);
z[iball]=cbox*float(k)/float(nz);
}
}
}


ofstream myfile;
myfile.open(filename);


myfile<<"#version 3.6"<<endl;
myfile<<"#include "<<"\""<<"colors.inc"<<"\""<<endl;
myfile<<"global_settings"<<endl;
myfile<<"{"<<endl;
myfile<<"assumed_gamma 1.0"<<endl;
myfile<<"}"<<endl;
myfile<<"camera"<<endl;
myfile<<"{"<<endl;
myfile<<"location"<<"<"<<2.5*abox<<","<<2.5*bbox<<","<<2.5*cbox<<">"<<endl; 
myfile<<"direction 1.5*z"<<endl;
myfile<<"right 4/3*z"<<endl;
myfile<<"look_at  <"<<abox/2.0<<","<<bbox/2.0<<","<<cbox/2.0<<">"<<endl; 
myfile<<"}"<<endl;
myfile<<"background { color red 0.5 green 0.5 blue 0.5 }"<<endl;
myfile<<"light_source"<<endl;
myfile<<"{"<<endl;
myfile<<"0*x"<<endl;
myfile<< "color red"<<endl;
myfile<<"1.0  green 1.0  blue 1.0"<<endl;
myfile<<"translate <-30, 30, -30>"<<endl;
myfile<<"}"<<endl;
myfile<<"light_source"<<endl;
myfile<<"{"<<endl;
myfile<<"0*x"<<endl;
myfile<<"color red"<<endl;
myfile<< "0.5  green 0.5  blue 0.5"<<endl;
myfile<<"translate <30, 30, -30>"<<endl;
myfile<<"}"<<endl;

iball=-1;
for(int i=0;i<=nx-1;i++)
{
for(int j=0;j<=ny-1;j++)
{
for(int k=0;k<=nz-1;k++)
{
iball=iball+1;
red=float(i)/float(nx);
red=red*float(ifile)/float(nfiles);
green=float(j)/float(ny);
green=green*float(ifile)/float(nfiles);
blue=float(k)/float(nz);
blue=blue*float(ifile)/float(nfiles);
myfile<<"sphere { <"<<x[iball]<<","<<y[iball]<<","<<z[iball]<<">,"<<rad<<endl;
myfile<<"texture {pigment {color rgb<"<<red<<","<<green<<","<<blue<<">}"<<endl; 
myfile<<"finish{specular 1}} }"<<endl;
}
}
}
      
myfile.close();
}

return(0);
}