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mathfunction.h
00001 /*************************************************************************** 00002 mathfunction.h - description 00003 ------------------- 00004 begin : Mon Nov 11 2002 00005 copyright : (C) 2002-03 by Fungmeista 00006 email : mizunoami44@users.sourceforge.net 00007 ***************************************************************************/ 00008 00009 /*************************************************************************** 00010 * * 00011 * This program is free software; you can redistribute it and/or modify * 00012 * it under the terms of the GNU General Public License as published by * 00013 * the Free Software Foundation; either version 2 of the License, or * 00014 * (at your option) any later version. * 00015 * * 00016 ***************************************************************************/ 00017 00018 #ifndef MATHFUNCTION_H 00019 #define MATHFUNCTION_H 00020 00021 #include <qpoint.h> 00022 #include <qstring.h> 00023 00024 class QPointArray; 00025 class QPainter; 00026 class QMouseEvent; 00027 00028 class FungParser; 00029 class ExpressionGraph; 00030 class BasicGraph; 00031 00042 class MathFunction 00043 { 00044 public: 00045 MathFunction(BasicGraph * = 0,int expressions = 0); 00046 virtual ~MathFunction(); 00047 00053 virtual void calculate_and_draw(QPainter*){} 00054 00059 virtual void draw_stored(QPainter *p){calculate_and_draw(p);} 00060 00068 int expressionsRequired(){ return expression_count;} 00069 00070 void exec(FungParser *fp = 0, FungParser *fp2 = 0); 00071 00072 void drawFunction(QPainter *); 00073 bool active(){return _active;} 00074 void sendClick(QMouseEvent *e, double arg = 0, double arg2 = 0); 00075 void cancel(); 00076 00077 protected: 00079 QPoint lowerBounds,upperBounds; 00080 double arg1, arg2, beta, arg1x, arg2x, arg1y, arg2y, beta2; 00081 00083 void setResult(QString &s); 00084 00085 int expression_count; 00086 00090 FungParser *expression; 00091 FungParser *expression2; 00092 00098 int toPixelXCoord(double x_coordinate); 00099 00105 int toPixelYCoord(double y_coordinate); 00106 00112 double toGraphXCoord(double x_coordinate); 00113 00119 double toGraphYCoord(double y_coordinate); 00120 00121 double animatorValue(); 00122 00124 void drawSelectedPoint(double x, double y, QPainter *painter); 00125 00127 BasicGraph *basicgraph; 00128 private: 00129 void getTwoPoints(); 00130 void drawLeftArrow(QPainter *); 00131 void drawRightArrow(QPainter *); 00132 00133 QString resultString; 00134 bool _active; 00135 int mouseClicks; 00136 QPoint lastClick; 00137 00138 static const int LEFTOFFSET = 30; 00139 00140 static const int CANCEL = -1; 00141 static const int GETLOWERBOUND = 0; 00142 static const int GOTLOWERBOUND = 1; 00143 static const int GETUPPERBOUND = 2; 00144 static const int GOTUPPERBOUND = 3; 00145 static const int CALCULATE = 4; 00146 static const int CLICKTOCONTINUE = 5; 00147 00148 static const int BOUNDS_TRIANGLE = 4; 00149 }; 00150 00151 #endif //MATHFUNCTION_H