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C/C++ Source or Header  |  2002-09-07  |  3KB  |  59 lines
  1. /////////////////////////////////////////////////////////////////////////////
  2. // Name:        liner.h
  3. // Author:      Klaas Holwerda
  4. // Created:     1/10/2000
  5. // Copyright:   2000 (c) Klaas Holwerda
  6. // Licence:     wxWindows Licence
  7. /////////////////////////////////////////////////////////////////////////////
  8. #ifndef __WXLINER_H
  9. #define __WXLINER_H
  10.  
  11. #if defined(__GNUG__) && !defined(__APPLE__)
  12.     #pragma interface "liner.cpp"
  13. #endif
  14.  
  15.  
  16. #include "wx/geometry.h"
  17.  
  18. enum OUTPRODUCT {R_IS_LEFT,R_IS_ON,R_IS_RIGHT};
  19.  
  20. // Status of a point to a wxLine
  21. enum R_PointStatus {R_LEFT_SIDE, R_RIGHT_SIDE, R_ON_AREA, R_IN_AREA};
  22.  
  23. class wxLine
  24. {
  25. public:
  26.     // constructors and destructor
  27.     wxLine( double x1, double y1, double x2, double y2 );
  28.     wxLine( const wxPoint2DDouble& a, const wxPoint2DDouble& b);
  29.     ~wxLine();
  30.  
  31.     wxPoint2DDouble GetBeginPoint();                               // Get the beginpoint from a wxLine
  32.     wxPoint2DDouble GetEndPoint();                                 // Get the endpoint from a wxLine
  33.     bool            CheckIntersect( wxLine&, double Marge); // Check if two wxLines intersects
  34.     int             Intersect( wxLine&,  wxPoint2DDouble& bp ,wxPoint2DDouble& ep ,double Marge) ;   // Intersects two wxLines
  35.     bool            Intersect( wxLine& lijn, wxPoint2DDouble& crossing); //intersect two (infinit) lines
  36.     R_PointStatus   PointOnLine( const wxPoint2DDouble& a_Point, double& Distance, double Marge ); //For an infinite wxLine
  37.     R_PointStatus   PointInLine( const wxPoint2DDouble& a_Point, double& Distance, double Marge ); //For a non-infinite wxLine
  38.     OUTPRODUCT      OutProduct( const wxLine& two, double accur);              // outproduct of two wxLines
  39.     double          Calculate_Y( double X);                                 // Caclulate Y if X is known
  40.     void            Virtual_Point( wxPoint2DDouble& a_point, double distance) const;
  41.     wxLine&         operator=( const wxLine&);                              // assignment operator
  42.     void            CalculateLineParameters();                                  // Calculate the parameters if nessecary
  43.     void            OffsetContour( const wxLine& nextline, double factor,wxPoint2DDouble& offsetpoint) const;
  44.  
  45. private:
  46.  
  47.     int   ActionOnTable1(R_PointStatus,R_PointStatus);                          // Function needed for Intersect
  48.     int   ActionOnTable2(R_PointStatus,R_PointStatus);                          // Function needed for Intersect
  49.  
  50.     double      m_AA;
  51.     double      m_BB;
  52.     double      m_CC;
  53.     wxPoint2DDouble m_a;
  54.     wxPoint2DDouble m_b;
  55.     bool        m_valid_parameters;
  56. };
  57.  
  58. #endif
  59.