/usr/include/CGAL/Qt/VoronoiGraphicsItem.h is in libcgal-qt5-dev 4.7-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
// You can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL$
// $Id$
//
//
// Author(s) : Andreas Fabri <Andreas.Fabri@geometryfactory.com>
// Laurent Rineau <Laurent.Rineau@geometryfactory.com>
#ifndef CGAL_QT_VORONOI_GRAPHICS_ITEM_H
#define CGAL_QT_VORONOI_GRAPHICS_ITEM_H
#include <CGAL/Qt/GraphicsItem.h>
#include <CGAL/Qt/PainterOstream.h>
#include <CGAL/Qt/utility.h>
#include <QGraphicsScene>
#include <QGraphicsSceneMouseEvent>
#include <QPainter>
#include <QStyleOption>
#include <CGAL/intersection_2.h>
class QGraphicsSceneMouseEvent;
namespace CGAL {
namespace Qt {
template <typename DT>
class VoronoiGraphicsItem : public GraphicsItem
{
public:
VoronoiGraphicsItem(DT * dt_);
QRectF
boundingRect() const;
void
paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
void
modelChanged();
const QPen& edgesPen() const
{
return edges_pen;
}
void setEdgesPen(const QPen& pen)
{
edges_pen = pen;
}
private:
DT * dt;
QPen edges_pen;
};
template <typename DT>
VoronoiGraphicsItem<DT>::VoronoiGraphicsItem(DT * dt_)
: dt(dt_)
{
setZValue(3);
}
template <typename DT>
QRectF
VoronoiGraphicsItem<DT>::boundingRect() const
{
QRectF rect = CGAL::Qt::viewportsBbox(scene());
return rect;
}
template <typename DT>
void
VoronoiGraphicsItem<DT>::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget * /*w*/)
{
QRectF rect = option->exposedRect;
PainterOstream<typename DT::Geom_traits> pos(painter, rect);
painter->setPen(edgesPen());
for(typename DT::Finite_edges_iterator eit = dt->finite_edges_begin();
eit != dt->finite_edges_end();
eit++){
CGAL::Object o = dt->dual(eit);
typename DT::Segment s;
typename DT::Geom_traits::Ray_2 r;
typename DT::Geom_traits::Line_2 l;
if(CGAL::assign(s,o)){
pos << s;
} else if(CGAL::assign(r,o)) {
pos << r;
}else if(CGAL::assign(l,o)) {
pos << l;
}
}
}
template <typename T>
void
VoronoiGraphicsItem<T>::modelChanged()
{
update();
}
} // namespace Qt
} // namespace CGAL
#endif // CGAL_QT_VORONOI_GRAPHICS_ITEM_H
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