/***********************************************************************
*
* Copyright (c) 2012-2016 Barbara Geller
* Copyright (c) 2012-2016 Ansel Sermersheim
* Copyright (c) 2012-2014 Digia Plc and/or its subsidiary(-ies).
* Copyright (c) 2008-2012 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
*
* This file is part of CopperSpice.
*
* CopperSpice is free software: you can redistribute it and/or 
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* CopperSpice 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with CopperSpice.  If not, see 
* <http://www.gnu.org/licenses/>.
*
***********************************************************************/

#ifndef QLINE_H
#define QLINE_H

#include <QtCore/qpoint.h>

QT_BEGIN_NAMESPACE

class Q_CORE_EXPORT QLine
{
 public:
   inline QLine();
   inline QLine(const QPoint &pt1, const QPoint &pt2);
   inline QLine(int x1, int y1, int x2, int y2);

   inline bool isNull() const;

   inline QPoint p1() const;
   inline QPoint p2() const;

   inline int x1() const;
   inline int y1() const;

   inline int x2() const;
   inline int y2() const;

   inline int dx() const;
   inline int dy() const;

   inline void translate(const QPoint &p);
   inline void translate(int dx, int dy);

   inline QLine translated(const QPoint &p) const;
   inline QLine translated(int dx, int dy) const;

   inline void setP1(const QPoint &p1);
   inline void setP2(const QPoint &p2);
   inline void setPoints(const QPoint &p1, const QPoint &p2);
   inline void setLine(int x1, int y1, int x2, int y2);

   inline bool operator==(const QLine &d) const;
   inline bool operator!=(const QLine &d) const {
      return !(*this == d);
   }

 private:
   QPoint pt1, pt2;
};
Q_DECLARE_TYPEINFO(QLine, Q_MOVABLE_TYPE);


inline QLine::QLine()
{ }

inline QLine::QLine(const QPoint &pt1_, const QPoint &pt2_) : pt1(pt1_), pt2(pt2_)
{ }

inline QLine::QLine(int x1pos, int y1pos, int x2pos, int y2pos) : pt1(QPoint(x1pos, y1pos)), pt2(QPoint(x2pos, y2pos))
{ }

inline bool QLine::isNull() const
{
   return pt1 == pt2;
}

inline int QLine::x1() const
{
   return pt1.x();
}

inline int QLine::y1() const
{
   return pt1.y();
}

inline int QLine::x2() const
{
   return pt2.x();
}

inline int QLine::y2() const
{
   return pt2.y();
}

inline QPoint QLine::p1() const
{
   return pt1;
}

inline QPoint QLine::p2() const
{
   return pt2;
}

inline int QLine::dx() const
{
   return pt2.x() - pt1.x();
}

inline int QLine::dy() const
{
   return pt2.y() - pt1.y();
}

inline void QLine::translate(const QPoint &point)
{
   pt1 += point;
   pt2 += point;
}

inline void QLine::translate(int adx, int ady)
{
   this->translate(QPoint(adx, ady));
}

inline QLine QLine::translated(const QPoint &p) const
{
   return QLine(pt1 + p, pt2 + p);
}

inline QLine QLine::translated(int adx, int ady) const
{
   return translated(QPoint(adx, ady));
}

inline void QLine::setP1(const QPoint &aP1)
{
   pt1 = aP1;
}

inline void QLine::setP2(const QPoint &aP2)
{
   pt2 = aP2;
}

inline void QLine::setPoints(const QPoint &aP1, const QPoint &aP2)
{
   pt1 = aP1;
   pt2 = aP2;
}

inline void QLine::setLine(int aX1, int aY1, int aX2, int aY2)
{
   pt1 = QPoint(aX1, aY1);
   pt2 = QPoint(aX2, aY2);
}

inline bool QLine::operator==(const QLine &d) const
{
   return pt1 == d.pt1 && pt2 == d.pt2;
}

Q_CORE_EXPORT QDebug operator<<(QDebug d, const QLine &p);

#ifndef QT_NO_DATASTREAM
Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QLine &);
Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QLine &);
#endif


class Q_CORE_EXPORT QLineF
{
 public:

   enum IntersectType { NoIntersection, BoundedIntersection, UnboundedIntersection };

   inline QLineF();
   inline QLineF(const QPointF &pt1, const QPointF &pt2);
   inline QLineF(qreal x1, qreal y1, qreal x2, qreal y2);
   inline QLineF(const QLine &line) : pt1(line.p1()), pt2(line.p2()) { }

   static QLineF fromPolar(qreal length, qreal angle);

   bool isNull() const;

   inline QPointF p1() const;
   inline QPointF p2() const;

   inline qreal x1() const;
   inline qreal y1() const;

   inline qreal x2() const;
   inline qreal y2() const;

   inline qreal dx() const;
   inline qreal dy() const;

   qreal length() const;
   void setLength(qreal len);

   qreal angle() const;
   void setAngle(qreal angle);

   qreal angleTo(const QLineF &l) const;

   QLineF unitVector() const;
   QLineF normalVector() const;

   // ### Qt5/rename intersects() or intersection() and rename IntersectType IntersectionType
   IntersectType intersect(const QLineF &l, QPointF *intersectionPoint) const;

   qreal angle(const QLineF &l) const;

   QPointF pointAt(qreal t) const;
   inline void translate(const QPointF &p);
   inline void translate(qreal dx, qreal dy);

   inline QLineF translated(const QPointF &p) const;
   inline QLineF translated(qreal dx, qreal dy) const;

   inline void setP1(const QPointF &p1);
   inline void setP2(const QPointF &p2);
   inline void setPoints(const QPointF &p1, const QPointF &p2);
   inline void setLine(qreal x1, qreal y1, qreal x2, qreal y2);

   inline bool operator==(const QLineF &d) const;
   inline bool operator!=(const QLineF &d) const {
      return !(*this == d);
   }

   QLine toLine() const;

 private:
   QPointF pt1, pt2;
};
Q_DECLARE_TYPEINFO(QLineF, Q_MOVABLE_TYPE);

inline QLineF::QLineF()
{
}

inline QLineF::QLineF(const QPointF &apt1, const QPointF &apt2)
   : pt1(apt1), pt2(apt2)
{
}

inline QLineF::QLineF(qreal x1pos, qreal y1pos, qreal x2pos, qreal y2pos)
   : pt1(x1pos, y1pos), pt2(x2pos, y2pos)
{
}

inline qreal QLineF::x1() const
{
   return pt1.x();
}

inline qreal QLineF::y1() const
{
   return pt1.y();
}

inline qreal QLineF::x2() const
{
   return pt2.x();
}

inline qreal QLineF::y2() const
{
   return pt2.y();
}

inline QPointF QLineF::p1() const
{
   return pt1;
}

inline QPointF QLineF::p2() const
{
   return pt2;
}

inline qreal QLineF::dx() const
{
   return pt2.x() - pt1.x();
}

inline qreal QLineF::dy() const
{
   return pt2.y() - pt1.y();
}

inline QLineF QLineF::normalVector() const
{
   return QLineF(p1(), p1() + QPointF(dy(), -dx()));
}

inline void QLineF::translate(const QPointF &point)
{
   pt1 += point;
   pt2 += point;
}

inline void QLineF::translate(qreal adx, qreal ady)
{
   this->translate(QPointF(adx, ady));
}

inline QLineF QLineF::translated(const QPointF &p) const
{
   return QLineF(pt1 + p, pt2 + p);
}

inline QLineF QLineF::translated(qreal adx, qreal ady) const
{
   return translated(QPointF(adx, ady));
}

inline void QLineF::setLength(qreal len)
{
   if (isNull()) {
      return;
   }
   QLineF v = unitVector();
   pt2 = QPointF(pt1.x() + v.dx() * len, pt1.y() + v.dy() * len);
}

inline QPointF QLineF::pointAt(qreal t) const
{
   qreal vx = pt2.x() - pt1.x();
   qreal vy = pt2.y() - pt1.y();
   return QPointF(pt1.x() + vx * t, pt1.y() + vy * t);
}

inline QLine QLineF::toLine() const
{
   return QLine(pt1.toPoint(), pt2.toPoint());
}


inline void QLineF::setP1(const QPointF &aP1)
{
   pt1 = aP1;
}

inline void QLineF::setP2(const QPointF &aP2)
{
   pt2 = aP2;
}

inline void QLineF::setPoints(const QPointF &aP1, const QPointF &aP2)
{
   pt1 = aP1;
   pt2 = aP2;
}

inline void QLineF::setLine(qreal aX1, qreal aY1, qreal aX2, qreal aY2)
{
   pt1 = QPointF(aX1, aY1);
   pt2 = QPointF(aX2, aY2);
}

inline bool QLineF::operator==(const QLineF &d) const
{
   return pt1 == d.pt1 && pt2 == d.pt2;
}

Q_CORE_EXPORT QDebug operator<<(QDebug d, const QLineF &p);

#ifndef QT_NO_DATASTREAM
Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QLineF &);
Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QLineF &);
#endif

QT_END_NAMESPACE

#endif // QLINE_H
