contrib/include/wx/canvas/polygon.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        polygon.h
   3 // Author:      Klaas Holwerda
   4 // Created:     XX/XX/XX
   5 // Copyright:   2000 (c) Klaas Holwerda
   6 // Licence:     wxWindows Licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifndef __WXPOLYGON_H__
  10 #define __WXPOLYGON_H__
  11
  12 #ifdef __GNUG__
  13     #pragma interface "polygon.cpp"
  14 #endif
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/wx.h"
  18 #endif
  19
  20 #include "wx/matrix.h"
  21 #include "wx/geometry.h"
  22 #include "bbox.h"
  23 #include "canvas.h"
  24
  25 enum INOUTPOLY {OUTSIDE_POLY,INSIDE_POLY,ON_POLY};
  26
  27 //----------------------------------------------------------------------------
  28 // wxCanvasPolygon
  29 //----------------------------------------------------------------------------
  30
  31 class wxCanvasPolygon: public wxCanvasObject
  32 {
  33 public:
  34     wxCanvasPolygon( int n, wxPoint2DDouble points[],  bool spline = FALSE );
  35     ~wxCanvasPolygon();
  36     void SetBrush( const wxBrush& brush)  { m_brush = brush; }
  37     void SetPen( const wxPen& pen)        { m_pen = pen; CalcBoundingBox(); }
  38
  39     //set colour 1
  40     //being the background color if filling with a monochrome bitmap
  41     //or in case of gradient filling the starting colour for the fill
  42     void SetColour1( const wxColour& fg) { m_textfg=fg;}
  43     //set colour 1
  44     //being the foreground color if filling with a monochrome bitmap
  45     //or in case of gradient filling the ending colour for the fill
  46     void SetColour2( const wxColour& bg) { m_textbg=bg;}
  47     //transparent filling when bitmapbrush is monochrome
  48     void SetTransParent(bool transp) { m_transp=transp;}
  49     //gradient filling using lines chnging in colour from colour1 to colour2
  50     void SetGradient(bool gradient, const wxPen& gpen, double distance)
  51     { m_gradient=gradient;
  52       m_gpen=gpen;
  53       m_gdistance=distance;
  54     }
  55
  56     double  GetPosX() { return m_points[0].m_x; }
  57     double  GetPosY() { return m_points[0].m_y; }
  58     void    SetPosXY( double x, double y);
  59
  60     void TransLate( double x, double y );
  61     void CalcBoundingBox();
  62
  63     virtual void Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height );
  64     virtual void WriteSVG( wxTextOutputStream &stream );
  65
  66     wxCanvasObject* IsHitWorld( double x, double y, double margin = 0 );
  67
  68     INOUTPOLY PointInPolygon(const wxPoint2DDouble& P, double marge);
  69
  70 private:
  71
  72     bool MoveUp(double horline, int& index, int direction);
  73     void DetectCriticalPoints();
  74     void FillPolygon(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height );
  75     wxList m_CRlist;
  76     wxList m_AETlist;
  77
  78
  79     wxBrush       m_brush;
  80     wxPen         m_pen;
  81     wxColour      m_textbg;
  82     wxColour      m_textfg;
  83
  84     //if brush is of type bitmap with a mask fill with mask transparent
  85     bool          m_transp;
  86     bool          m_gradient;
  87     wxPen         m_gpen;
  88     double        m_gdistance;
  89
  90     bool          m_spline;
  91
  92     int           m_n;
  93     wxPoint2DDouble* m_points;
  94 };
  95
  96 //----------------------------------------------------------------------------
  97 // wxCanvasPolyline
  98 //----------------------------------------------------------------------------
  99
 100 class wxCanvasPolyline: public wxCanvasObject
 101 {
 102 public:
 103     wxCanvasPolyline(int n, wxPoint2DDouble points[]);
 104     ~wxCanvasPolyline();
 105     void SetPen( const wxPen& pen)    { m_pen = pen; CalcBoundingBox(); }
 106
 107     double  GetPosX() { return m_points[0].m_x; }
 108     double  GetPosY() { return m_points[0].m_y; }
 109     void    SetPosXY( double x, double y);
 110
 111     void TransLate( double x, double y );
 112     void CalcBoundingBox();
 113
 114     virtual void Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height );
 115     virtual void WriteSVG( wxTextOutputStream &stream );
 116
 117     wxCanvasObject* IsHitWorld( double x, double y, double margin = 0 );
 118
 119     bool PointOnPolyline(const wxPoint2DDouble& P, double marge);
 120
 121 private:
 122
 123     wxPen         m_pen;
 124
 125     int           m_n;
 126     wxPoint2DDouble* m_points;
 127 };
 128
 129 //----------------------------------------------------------------------------
 130 // wxCanvasPolygon
 131 //----------------------------------------------------------------------------
 132
 133 class wxCanvasPolygonL: public wxCanvasObject
 134 {
 135 public:
 136     wxCanvasPolygonL(wxList* points, bool spline = FALSE);
 137     ~wxCanvasPolygonL();
 138     void SetBrush( const wxBrush& brush)  { m_brush = brush; }
 139     void SetPen( const wxPen& pen)        { m_pen = pen; CalcBoundingBox(); }
 140     void SetColour1( const wxColour& fg) { m_textfg=fg;}
 141     void SetColour2( const wxColour& bg) { m_textbg=bg;}
 142     void SetTransParent(bool transp) { m_transp=transp;}
 143
 144     double  GetPosX();
 145     double  GetPosY();
 146     void    SetPosXY( double x, double y);
 147     void TransLate( double x, double y );
 148     void CalcBoundingBox();
 149
 150     virtual void Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height );
 151     virtual void WriteSVG( wxTextOutputStream &stream );
 152
 153     wxCanvasObject* IsHitWorld( double x, double y, double margin = 0 );
 154
 155     INOUTPOLY PointInPolygon(const wxPoint2DDouble& P, double marge);
 156
 157 private:
 158
 159     wxBrush       m_brush;
 160     wxPen         m_pen;
 161     bool          m_spline;
 162     wxColour      m_textbg;
 163     wxColour      m_textfg;
 164     //if brush is of type bitmap with a mask fill with mask transparent
 165     bool          m_transp;
 166
 167     wxList*       m_lpoints;
 168 };
 169
 170 //----------------------------------------------------------------------------
 171 // wxCanvasPolyline
 172 //----------------------------------------------------------------------------
 173
 174 class wxCanvasPolylineL: public wxCanvasObject
 175 {
 176 public:
 177     wxCanvasPolylineL(wxList* points, bool spline );
 178     ~wxCanvasPolylineL();
 179     void SetPen( const wxPen& pen)    { m_pen = pen; CalcBoundingBox(); }
 180
 181     double  GetPosX();
 182     double  GetPosY();
 183     void    SetPosXY( double x, double y);
 184
 185     void TransLate( double x, double y );
 186     void CalcBoundingBox();
 187
 188     virtual void Render(wxTransformMatrix* cworld, int clip_x, int clip_y, int clip_width, int clip_height );
 189     virtual void WriteSVG( wxTextOutputStream &stream );
 190
 191     wxCanvasObject* IsHitWorld( double x, double y, double margin = 0 );
 192
 193     bool PointOnPolyline(const wxPoint2DDouble& P, double marge);
 194
 195 private:
 196     wxPen         m_pen;
 197     bool          m_spline;
 198
 199     wxList*       m_lpoints;
 200 };
 201
 202 //active edge table
 203 class wxAET
 204 {
 205 public:
 206     inline void CalculateLineParameters( const wxPoint2DDouble& p1 , const wxPoint2DDouble& p2 );
 207     inline void CalculateXs( double y );
 208
 209     //line paramters
 210     bool m_horizontal;
 211     double m_BdivA;
 212     double m_CdivA;
 213     int m_index;
 214     int m_direction;
 215     //intersection point with scanline;
 216     double m_xs;
 217 };
 218
 219 #endif
 220