Biomechanical Joint Model  Author: Anderson Maciel

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EndPoint.H

Go to the documentation of this file.

/************************************************************************\

  Copyright 1997 The University of North Carolina at Chapel Hill.
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   --------------------------------- 
  |Please send all BUG REPORTS to:  |
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  |   geom@cs.unc.edu               |
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  The authors may be contacted via:

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            Department of Computer Science
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/************************************************************************\
Filename: EndPoint.H
--
Description: This file defines the class EndPoint, which stores
             information about either the (min_x, min_y, min_z)
             or the (max_x, max_y, max_z) end-point of an
             AABB.
\************************************************************************/

#ifndef ENDPOINT_H
#define ENDPOINT_H

class AABB;  //defined in file AABB.H

const int MIN=1;
const int MAX=2;

/************************************************************************\
Class: EndPoint
--
Description: Each instance of EndPoint appears simultaneously in
             three sorted linked lists, one for each dimension,
             as required by the sweep and prune algorithm. A
             "min" and the correspoding "max" end-point give us
             three intervals, one for each axis, which are
             actually the projections of the AABB on each of the
             three co-ordinate axii.

\************************************************************************/



class EndPoint
{
public:
  char        minmax;     //whether the instance represents a
                          //"min" or a "max" end-point.
  
  double      val[3];     //the coordinates of the EndPoint.
  EndPoint    *prev[3];   //for maintaining the three linked
  EndPoint    *next[3];   //lists.

  AABB        *aabb;      //back pointer to the parent AABB.

};

#endif /* ENDPOINT_H */

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