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rdTriangle.h

// rdTriangle.h
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Copyright 2002 Realistic Dynamics, Inc.
// All rights reserved.
//
// Please do not read, copy, distribute, or use without permission.
// Contact: Frank C. Anderson, fca@RealisticDynamics.com
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#ifndef __rdTriangle_h__
#define __rdTriangle_h__

// INCLUDES
#include "rdTools.h"
#include "rdObject.h"
#include "rdLine.h"
#include "rdVertices.h"

//=============================================================================
//=============================================================================
class RDTOOLS_API rdTriangle : public rdObject
{
//=============================================================================
// DATA
//=============================================================================
public:
   enum INTERSECTION { NONE=0,
      POINT_INTERIOR,
      POINT_VERTEX0,POINT_VERTEX1,POINT_VERTEX2,
      POINT_EDGE01,POINT_EDGE12,POINT_EDGE20,
      LINE_INTERIOR,
      LINE_VERTEX0,LINE_VERTEX1,LINE_VERTEX2,
      LINE_EDGE01,LINE_EDGE12,LINE_EDGE20 };
private:
   rdVertices *_verts;
   char* _v3dNames[3];
   int   _v3dIndex[3];

//=============================================================================
// METHODS
//=============================================================================
public:
   //--------------------------------------------------------------------------
   // CONSTRUCTION
   //--------------------------------------------------------------------------
   rdTriangle();
   rdTriangle(IDOM_Element *aElement);
   virtual ~rdTriangle();
private:
   void setNull();

   //--------------------------------------------------------------------------
   // GET AND SET
   //--------------------------------------------------------------------------
public:
   void setVertices(rdVertices *aVertices);
   rdVertices* getVertices();
   int getVertex(int aWhich,double rV[3]) const;
   int getVertexIndex(int aWhich) const;

   //--------------------------------------------------------------------------
   // UTILITIES
   //--------------------------------------------------------------------------
   void computeLowerBounds(double rLower[3]) const;
   void computeUpperBounds(double rUpper[3]) const;
   INTERSECTION
      computeIntersection(const rdLine *aLine,double rP1[3],double rP2[3])
      const;
   INTERSECTION
      computeIntersection(const double aP[3]) const;
   void
      updateIndicies();

   //--------------------------------------------------------------------------
   // XML
   //--------------------------------------------------------------------------
   virtual void updateObject(bool aDeep=true);
   virtual void updateNode(bool aDeep=true);
   void updateData();

//=============================================================================
}; // END class rdTriangle
//=============================================================================
//=============================================================================

#endif  // __rdTriangle_h__

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