text: #ifndef PLANE_TRI_H
  
  #define PLANE_TRI_H
  
  /*----------------------------------------------------------------------
  		Copyright (c) 2004 Open Dynamics Framework Group
  					www.physicstools.org
  		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 Open Dynamics Framework Group nor the names of its contributors may
  		be used to endorse or promote products derived from this software without specific prior written permission.
  
  		THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  		INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  		DISCLAIMED. IN NO EVENT SHALL THE INTEL OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  		EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  		LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  		IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  		THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  -----------------------------------------------------------------------*/
  
  // http://codesuppository.blogspot.com
  //
  // mailto: jratcliff@infiniplex.net
  //
  // http://www.amillionpixels.us
  //
  
  
  
  enum PlaneTriResult
  {
    PTR_FRONT,
    PTR_BACK,
    PTR_SPLIT
  };
  
  PlaneTriResult planeTriIntersection(const float *plane,    // the plane equation in Ax+By+Cz+D format
                                      const float *triangle, // the source position triangle.
                                      unsigned int tstride,  // stride in bytes between vertices of the triangle.
                                      float        epsilon,  // the co-planer epsilon value.
                                      float       *front,    // the triangle in front of the
                                      unsigned int &fcount,  // number of vertices in the 'front' triangle.
                                      float       *back,      // the triangle in back of the plane
                                      unsigned int &bcount);  // the number of vertices in the 'back' triangle.
  
  
  #endif
  