/* This file is part of the KDE project Copyright (C) 2001 David Faure <faure@kde.org> This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifndef koPoint_h #define koPoint_h #include <tqwmatrix.h> #include <math.h> /** * A point whose coordinates are floating-point values ( "double"s ). * The API isn't documented, it's a perfect mirror of TQPoint. */ class KoPoint { public: KoPoint() { m_x = 0; m_y = 0; } KoPoint(const double &x, const double &y) : m_x(x), m_y(y) {} explicit KoPoint(const TQPoint & p) : m_x(p.x()), m_y(p.y()) {} ~KoPoint() {} bool operator==(const KoPoint &rhs) const { return TQABS(m_x-rhs.x()) < 1E-10 && TQABS(m_y-rhs.y()) < 1E-10; } bool operator!=(const KoPoint &rhs) const { return TQABS(m_x-rhs.x()) > 1E-10 || TQABS(m_y-rhs.y()) > 1E-10; } bool isNull() const { return m_x == 0 && m_y == 0; } double x() const { return m_x; } double y() const { return m_y; } void setX(const double &x) { m_x = x; } void setY(const double &y) { m_y = y; } double &rx() { return m_x; } double &ry() { return m_y; } KoPoint &operator=(const KoPoint &rhs) { m_x = rhs.x(); m_y = rhs.y(); return *this; } KoPoint &operator+=( const KoPoint &rhs ) { m_x += rhs.x(); m_y += rhs.y(); return *this; } KoPoint &operator-=( const KoPoint &rhs ) { m_x -= rhs.x(); m_y -= rhs.y(); return *this; } KoPoint &operator*=( const double &c ) { m_x *= c; m_y *= c; return *this; } friend inline KoPoint operator+( const KoPoint &, const KoPoint & ); friend inline KoPoint operator-( const KoPoint &, const KoPoint & ); friend inline KoPoint operator*( const KoPoint &, const double & ); friend inline KoPoint operator*( const double &, const KoPoint & ); friend inline double operator*( const KoPoint &a, const KoPoint &b ); // Not in TQPoint: void setCoords(const double &x, const double &y) { m_x = x; m_y = y; } KoPoint transform (const TQWMatrix &m) const { double x, y; m.map(m_x, m_y, &x, &y); return KoPoint(x, y); }; bool isNear(const KoPoint &p, double range) const { return (p.x() >= m_x - range && p.x() <= m_x + range && p.y() >= m_y - range && p.y() <= m_y + range); } static double getAngle( const KoPoint& p1, const KoPoint& p2 ) { double a = atan2( p2.x() - p1.x(), p2.y() - p1.y() ) + M_PI; return ( ( - ( a * 360 ) / ( 2 * M_PI ) - 90 ) - 180 ); } double manhattanLength() const { return TQABS( m_x ) + TQABS( m_y ); } /// Convert to a TQPoint - with precision loss! TQPoint toTQPoint() const { return TQPoint( tqRound( m_x ), tqRound( m_y ) ); } private: double m_x, m_y; }; inline KoPoint operator+( const KoPoint &p1, const KoPoint &p2 ) { return KoPoint( p1.m_x+p2.m_x, p1.m_y+p2.m_y ); } inline KoPoint operator-( const KoPoint &p1, const KoPoint &p2 ) { return KoPoint( p1.m_x-p2.m_x, p1.m_y-p2.m_y ); } inline KoPoint operator*( const KoPoint &p, const double &c ) { return KoPoint( p.m_x*c, p.m_y*c ); } inline KoPoint operator*( const double &c, const KoPoint &p ) { return KoPoint( p.m_x*c, p.m_y*c ); } inline double operator*( const KoPoint &a, const KoPoint &b ) { return a.m_x * b.m_x + a.m_y * b.m_y; } /****************************** kdDebug support *******************************/ #include <kdebug.h> /** Show a floating point value with great precision (use within kdDebug) */ #define DEBUGDOUBLE(d) TQString::number( (d), 'g', 20 ) inline kdbgstream operator<<( kdbgstream str, const KoPoint & r ) { // should this use DEBUGDOUBLE? str << "(" << r.x() << ", " << r.y() << ")"; return str; } inline kndbgstream operator<<( kndbgstream str, const KoPoint & ) { return str; } #endif