GIMPACT : Geometric tools for VR.

Copyright  (c) 2006 , Francisco León.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this list of
      conditions and the following disclaimer.
      
    * Redistributions in binary form must reproduce the above copyright notice, this list 
      of conditions and the following disclaimer in the documentation and/or other materials 
      provided with the distribution.
      
    * Neither the name of the GIMPACT nor the names of its contributors may be used
      to endorse or promote products derived from this software without specific prior
      written permission.

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