mirror of https://github.com/CGAL/cgal
145 lines
3.3 KiB
C++
145 lines
3.3 KiB
C++
// Copyright (c) 2008 GeometryFactory Sarl (France).
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you may redistribute it under
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// the terms of the Q Public License version 1.0.
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// See the file LICENSE.QPL distributed with CGAL.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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//
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//
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// Author(s) : Andreas Fabri <Andreas.Fabri@geometryfactory.com>
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// Laurent Rineau <Laurent.Rineau@geometryfactory.com>
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#ifndef CGAL_QT_PAINTER_OSTREAM_H
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#define CGAL_QT_PAINTER_OSTREAM_H
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#include <QPainter>
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#include <QPen>
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#include <QRectF>
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#include <CGAL/Qt/Converter.h>
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namespace CGAL {
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template <class CK>
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class Circular_arc_point_2;
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template <class CK>
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class Circular_arc_2;
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template <class CK>
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class Line_arc_2;
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namespace Qt {
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template <typename K>
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class PainterOstream {
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private:
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QPainter* qp;
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Converter<K> convert;
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public:
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PainterOstream(QPainter* p, QRectF rect = QRectF())
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: qp(p), convert(rect)
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{}
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PainterOstream& operator<<(const Point_2<K>& p)
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{
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qp->drawPoint(convert(p));
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return *this;
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}
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PainterOstream& operator<<(const Segment_2<K>& s)
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{
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qp->drawLine(convert(s.source()), convert(s.target()));
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return *this;
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}
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PainterOstream& operator<<(const Ray_2<K>& r)
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{
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qp->drawLine(convert(r));
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return *this;
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}
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PainterOstream& operator<<(const Line_2<K>& l)
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{
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qp->drawLine(convert(l));
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return *this;
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}
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PainterOstream& operator<<(const Triangle_2<K>& t)
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{
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qp->drawPolygon(convert(t));
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return *this;
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}
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PainterOstream& operator<<(const Iso_rectangle_2<K>& r)
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{
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qp->drawRect(convert(r));
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return *this;
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}
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PainterOstream& operator<<(const Circle_2<K>& c)
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{
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qp->drawEllipse(convert(c.bbox()));
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return *this;
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}
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PainterOstream& operator<<(const Circular_arc_point_2<K>& p)
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{
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(*this) << Point_2<K>(to_double(p.x()), to_double(p.y()));
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return *this;
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}
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PainterOstream& operator<<(const Circular_arc_2<K>& arc)
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{
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const typename K::Circle_2 & circ = arc.supporting_circle();
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const typename K::Point_2 & center = circ.center();
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const typename K::Circular_arc_point_2 & source = arc.source();
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const typename K::Circular_arc_point_2 & target = arc.target();
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double asource = std::atan2( -to_double(source.y() - center.y()),
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to_double(source.x() - center.x()));
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double atarget = std::atan2( -to_double(target.y() - center.y()),
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to_double(target.x() - center.x()));
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std::swap(asource, atarget);
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double aspan = atarget - asource;
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if(aspan < 0.)
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aspan += 2 * CGAL_PI;
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const double coeff = 180*16/CGAL_PI;
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qp->drawArc(convert(circ.bbox()),
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(int)(asource * coeff),
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(int)(aspan * coeff));
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return *this;
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}
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PainterOstream& operator<<(const Line_arc_2<K>& arc)
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{
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(*this) << Segment_2<K>(Point_2<K>(to_double(arc.source().x()), to_double(arc.source().y())),
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Point_2<K>(to_double(arc.target().x()), to_double(arc.target().y())));
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return *this;
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}
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};
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_PAINTER_OSTREAM_H
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