Hi!

With your help, I made program to draw spheres of 1000 in 3D box. But,I got
error message (" Parse error: Expected 'numeric expression', Undeclared
Identifier 'var1' found"). I could not fix this problem. Could you help me?

Also, I have text file for 3D particle position and position format in file
is as following:

1 2 3
3 3 4
4 4 5
etc.

Namely, particle position x,y,z are distinguished with space not with comma.
Is it fine?

Thank you very much.


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

#include "colors.inc"
  background { color Cyan }
  camera {
    location <0, 2, -3>
    look_at  <0, 1,  2>
  }

   light_source { <2, 4, -3> color White}

 #fopen MyFile "position1.txt" read
  #while (defined(MyFile))
    #read (MyFile,Var1,Var2,Var3)

    sphere {
    <var1, var2, var3>, 1
    texture {
      pigment { color Yellow }
      }
    }

  #end

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

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