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CP2D.h

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00001 /*
00002  * CP2D.h
00003  * $Id: CP2D.h,v 1.4 2003/06/24 14:50:02 anxo Exp $
00004  *
00005  * Copyright (C) 1999, 2000 Michael Meissner
00006  *
00007  * This program is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * This program is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00020  *
00021  * As a special exception to the GPL, the QGLViewer authors (Markus
00022  * Janich, Michael Meissner, Richard Guenther, Alexander Buck and Thomas
00023  * Woerner) give permission to link this program with Qt (non-)commercial
00024  * edition, and distribute the resulting executable, without including
00025  * the source code for the Qt (non-)commercial edition in the source
00026  * distribution.
00027  *
00028  */
00029 
00030 //  Description : Class CP2D
00031 //  Purpose     : Provides  funcionality
00032 
00033 
00034 #ifndef __CP2D_H
00035 #define __CP2D_H
00036 
00037 
00038 // System
00040 #include <math.h>
00041 #ifdef _MSC_VER
00042 #if _MSC_VER >= 1300
00043 #include <iostream>
00044 #endif
00045 #else
00046 #include <iostream.h>
00047 #endif
00048 
00049 // Own
00051 #include "CV2D.h"
00052 #include "CP3D.h"
00053 
00054 
00055 // forward declarations
00057 class CP3D;
00058 
00059 
00060 
00061 
00066 class CP2D 
00067 {   
00068 public:
00069   static double epsilon;
00070 
00073   CP2D() { m_ard[0] = 0.0;
00074            m_ard[1] = 0.0; };
00075 
00078   CP2D(double rdX, double rdY) { m_ard[0] = rdX;
00079                                  m_ard[1] = rdY; }
00080 
00083   CP2D(const CP2D& Point) { m_ard[0] = Point[0];
00084                             m_ard[1] = Point[1]; }
00085 
00086 
00088   // OVERLOADED OPERATORS //
00090  
00093   operator CP3D() const;
00094 
00096   const CP2D& operator=(const CP2D&);
00097 
00102   int operator==(const CP2D&) const;
00103 
00107   int operator!=(const CP2D&) const;
00108 
00110   CP2D& operator+=(const CV2D&);
00111 
00113   CP2D& operator-=(const CV2D&);
00114   
00116   CP2D& operator*=(const CV2D&);
00117 
00119   CP2D& operator*=(double);
00120 
00122   CP2D& operator/=(double);
00123 
00125   CP2D operator+(const CV2D&) const;
00126 
00128   CP2D operator+(const CP2D&) const;  // eigentlich nur fuer affine Punkte
00129   
00131   CP2D operator-(const CV2D&) const;
00132 
00134   CV2D operator-(const CP2D&) const ;
00135 
00137   CP2D operator*(const CV2D&) const;  // scaling
00138 
00140   CP2D operator*(double) const;
00141 
00143   CP2D operator/(const CV2D&) const;
00144 
00146   CP2D operator/(double) const;
00147 
00151   double& operator [] (int i) { return m_ard[i]; };
00152 
00154   double operator[](int i) const { return m_ard[i]; };
00155 
00156 
00158   // METHODS //
00160   
00162   double getMinComponent(void) const    { return m_ard[getMinComponentCoord()]; };
00163  
00165   double getAbsMinComponent(void) const { return m_ard[getAbsMinComponentCoord()]; };
00166  
00168   double getMaxComponent(void) const    { return m_ard[getMaxComponentCoord()]; };
00169  
00171   double getAbsMaxComponent(void) const { return m_ard[getAbsMaxComponentCoord()]; };
00172  
00174   int getMinComponentCoord(void) const;
00175 
00177   int getAbsMinComponentCoord(void) const;
00178 
00180   int getMaxComponentCoord(void) const;
00181 
00183   int getAbsMaxComponentCoord(void) const;
00184 
00188   CV2D getCV2D() const;
00189 
00191   double getX(void) const  { return m_ard[0]; };
00192 
00194   double getY(void) const  { return m_ard[1]; };
00195 
00197   void setX(double rdX)    { m_ard[0] = rdX; return; };
00198 
00200   void setY(double rdY)    { m_ard[1] = rdY; return; };
00201 
00204   void setCoord(double rdX, double rdY) { m_ard[0] = rdX; 
00205                                           m_ard[1] = rdY; 
00206                                           return; };
00207 
00209   // FRIENDS //
00211   
00213   friend CP2D AffinComb(const CP2D&, double, const CP2D&);
00214 
00216   friend CP2D AffinComb2(double r, const CP2D& R, 
00217                          double s, const CP2D& S) {
00218                                   return CP2D(r*R[0] + s*S[0],
00219                                               r*R[1] + s*S[1]); };
00220 
00222   friend double dist(const CP2D&, const CP2D&);
00223 
00225   friend double quaddist(const CP2D&, const CP2D&);
00226 
00228   friend CP2D Min(const CP2D&, const CP2D&);
00229 
00231   friend CP2D Max(const CP2D&, const CP2D&);
00232 
00234   friend CP2D operator*(double, const CP2D&);
00235 
00237   friend CP2D MidPoint(const CP2D&, const CP2D&);
00238 
00239 
00240   // output to stderr
00242 
00243   void print() const;
00244 
00246   friend inline ostream& operator<<(ostream&, const CP2D&);
00247 
00249   friend inline istream& operator>>(istream&, CP2D&);
00250 
00251 
00252 protected:
00253   double m_ard[2];
00254 };
00255 
00256 
00257 
00258 // Function   : operator=
00259 // Parameters : const CP2D& p1
00260 // Purpose    : assign another point to this point
00261 // Comments   : 
00262 inline const CP2D& CP2D::operator=(const CP2D& p1)
00263 /*******************************************************************/
00264 {
00265   m_ard[0] = p1.m_ard[0];
00266   m_ard[1] = p1.m_ard[1];
00267   return *this;
00268 }
00269 
00270 
00271 
00272 // Function   : getCV2D
00273 // Parameters : 
00274 // Purpose    : Convert CP2D to CV2D
00275 // Comments   : 
00276 inline CV2D CP2D::getCV2D() const
00277 /*******************************************************************/
00278 {
00279   return CV2D(m_ard[0], m_ard[1]);
00280 }
00281 
00282 
00283 
00284 // Function   : operator<<
00285 // Parameters : ostream& s, const CP2D& pnt
00286 // Purpose    : 
00287 // Comments   : 
00288 inline ostream& operator<<(ostream& s, const CP2D& pnt)
00289 /*******************************************************************/
00290 {   
00291   return s << "(" << pnt.m_ard[0] << "," << pnt.m_ard[1] << ")"; 
00292 }
00293 
00294 
00295 
00296 // Function   : operator>>
00297 // Parameters : istream& s, CP2D& pnt
00298 // Purpose    : 
00299 // Comments   : 
00300 inline istream& operator>>(istream& s, CP2D& pnt)
00301 /*******************************************************************/
00302 {   
00303   char c;
00304   return s >> c >> pnt.m_ard[0] >> c >> pnt.m_ard[1] >> c;
00305 }
00306 
00307 #endif

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