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- /* 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 <qwmatrix.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 QPoint.
- */
- 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 QPoint & p) : m_x(p.x()), m_y(p.y()) {}
- ~KoPoint() {}
-
- bool operator==(const KoPoint &rhs) const { return QABS(m_x-rhs.x()) < 1E-10 && QABS(m_y-rhs.y()) < 1E-10; }
- bool operator!=(const KoPoint &rhs) const { return QABS(m_x-rhs.x()) > 1E-10 || QABS(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 QPoint:
- void setCoords(const double &x, const double &y) { m_x = x; m_y = y; }
- KoPoint transform (const QWMatrix &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 QABS( m_x ) + QABS( m_y );
- }
-
- /// Convert to a QPoint - with precision loss!
- QPoint toQPoint() const
- {
- return QPoint( qRound( m_x ), qRound( 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) QString::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
-