
Format of the object files (.pts)
----------------------------------------

 Each object is formed by creating an polygonal mesh using a bidimensional matrix of 3D
points. Each point is connected with it's horizontal and vertical neighbours, as shown
by the following drawing:


   o----o----o----o----o----o-- ... --o
   |    |    |    |    |    |         |
   o----o----o----o----o----o-- ... --o
   |    |    |    |    |    |         |
   o----o----o----o----o----o-- ... --o
   |    |    |    |    |    |         |
   o----o----o----o----o----o-- ... --o
   |    |    |    |    |    |         |
   .    .    .    .    .    .         .                             
   .    .    .    .    .    .         .                             
   .    .    .    .    .    .         .                             
   |    |    |    |    |    |         |
   o----o----o----o----o----o-- ... --o


 The contents of the pts files it's nothing more than a listing of the matrix that composes
the object. In the header of the file there are three lines with information about the matrix
dimensions and object topology. After that you have the matrix's points, one by line and the
matrix filling should be done by lines.
  If the flag is 1, it means that the last column column connects to the first one, making a
closed object.

Example:
--------
1 line:  Number of lines in the matrix
2 line:  Number of columns in the matrix
3 line:  flag (0 or 1)
4 line:  X11 Y11 Z11
5 line:  X12 Y12 Z12
...








