3dChord.h

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/*******************************************************************************
** Copyright (c) 1992-2010 VT MAK
** All rights reserved.
*******************************************************************************/

#ifndef _3dChord_H
#define _3dChord_H

#include <vlutil/vlMachineTypes.h>
#include "3dPoint.h"
#include "3dExtent.h"


#ifdef DtUSE_UTILITIES_NAMESPACE
namespace DtUSE_UTILITIES_NAMESPACE
{
#endif

class DT_DLL_MATRIX Dt3dChord
{
public:
   Dt3dChord();

   Dt3dChord(const Dt3dPoint& endpoint0, const Dt3dPoint& endpoint1);

   ~Dt3dChord();

   Dt3dChord(const Dt3dChord& orig);

   Dt3dChord& operator=(const Dt3dChord& orig);



   const Dt3dPoint& endpoint0() const;

   const Dt3dPoint& endpoint1() const;

   double directedXComponent() const;

   double directedYComponent() const;

   double directedZComponent() const;

   const Dt3dExtent& extent() const;

   Dt3dPoint computePoint(const double t) const; 

   bool isCollinear(const Dt3dPoint& p) const;

   bool parallelToXYPlane() const;

   bool inPlaneZEquals(const double c) const;

   bool intersectsPlaneZEqualsAtPoint(const double c, 
      double& tvalue) const; 

   bool collinearPointLiesWithin(const Dt3dPoint& pt) const;

protected:

   double   minZ() const;

   double   maxZ() const;

   void guaranteeValidConstruction();

protected:
   Dt3dPoint  myEndpoint0;          
   Dt3dPoint  myEndpoint1;          


   double   myDirectedXComponent;       
   double   myDirectedYComponent; 
   double   myDirectedZComponent;

   Dt3dExtent myExtent;  
};


inline const Dt3dExtent& Dt3dChord::extent() const
{
  return myExtent;
}

inline const Dt3dPoint& Dt3dChord::endpoint0() const
{
  return myEndpoint0;
}

inline const Dt3dPoint& Dt3dChord::endpoint1() const
{
  return myEndpoint1;
}
 
inline double Dt3dChord::directedXComponent() const
{
  return myDirectedXComponent;
}

inline double Dt3dChord::directedYComponent() const
{
  return myDirectedYComponent;
}

inline double Dt3dChord::directedZComponent() const
{
  return myDirectedZComponent;
}

DT_DLL_MATRIX std::ostream& operator<<(std::ostream& os, const Dt3dChord& chord);

#ifdef DtUSE_UTILITIES_NAMESPACE
}
#endif

#endif