/usr/include/CGAL/Qt/PointsInKdTreeGraphicsItem.h is in libcgal-qt4-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | // Copyright (c) 2008 GeometryFactory Sarl (France).
// 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_POINTS_IN_KD_TREE_GRAPHICS_ITEM_H
#define CGAL_QT_POINTS_IN_KD_TREE_GRAPHICS_ITEM_H
#include <CGAL/Bbox_2.h>
#include <CGAL/bounding_box.h>
#include <CGAL/Qt/PainterOstream.h>
#include <CGAL/Qt/GraphicsItem.h>
#include <CGAL/Qt/Converter.h>
#include <CGAL/Fuzzy_iso_box.h>
#include <QGraphicsScene>
#include <QPainter>
#include <QStyleOption>
namespace CGAL {
namespace Qt {
template <typename KdTree>
class PointsInKdTreeGraphicsItem : public GraphicsItem
{
typedef typename std::iterator_traits<typename KdTree::iterator>::value_type Point_2;
typedef typename CGAL::Kernel_traits<Point_2>::Kernel Traits;
typedef typename Traits::Iso_rectangle_2 Iso_rectangle_2;
typedef CGAL::Fuzzy_iso_box<typename KdTree::Traits> Fuzzy_iso_box;
// Instead of first collecting points into a container, and then draw them
// we use an output iterator that draws them on the fly
template <typename K>
class Draw : public std::iterator<std::output_iterator_tag, void, void, void, void> {
QPainter* painter;
QMatrix* matrix;
Converter<K> convert;
public:
Draw(QPainter* painter, QMatrix* matrix)
: painter(painter), matrix(matrix)
{}
Draw& operator=(const Point_2& p)
{
QPointF point = matrix->map(convert(p));
painter->drawPoint(point);
return *this;
}
Draw& operator++()
{
return *this;
}
Draw& operator*()
{
return *this;
}
Draw& operator++(int)
{
return *this;
}
};
public:
PointsInKdTreeGraphicsItem(KdTree* p_);
void modelChanged();
public:
QRectF boundingRect() const;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
const QPen& verticesPen() const
{
return vertices_pen;
}
void setVerticesPen(const QPen& pen)
{
vertices_pen = pen;
}
protected:
void updateBoundingBox();
KdTree * kdtree;
QPainter* m_painter;
PainterOstream<Traits> painterostream;
Converter<Traits> convert;
QRectF bounding_rect;
QPen vertices_pen;
bool draw_vertices;
};
template <typename KdTree>
PointsInKdTreeGraphicsItem<KdTree>::PointsInKdTreeGraphicsItem(KdTree * p_)
: kdtree(p_), painterostream(0), draw_vertices(true)
{
setVerticesPen(QPen(::Qt::red, 3.));
if(kdtree->size() == 0){
this->hide();
}
updateBoundingBox();
setZValue(3);
#if QT_VERSION >= 0x040600
setFlag(QGraphicsItem::ItemUsesExtendedStyleOption, true);
#endif
}
template <typename KdTree>
QRectF
PointsInKdTreeGraphicsItem<KdTree>::boundingRect() const
{
return bounding_rect;
}
template <typename KdTree>
void
PointsInKdTreeGraphicsItem<KdTree>::paint(QPainter *painter,
const QStyleOptionGraphicsItem *option,
QWidget * /*widget*/)
{
Iso_rectangle_2 isor = convert(option->exposedRect);
Fuzzy_iso_box range(isor.vertex(0), isor.vertex(2));
painter->setPen(verticesPen());
QMatrix matrix = painter->matrix();
painter->resetMatrix();
Draw<Traits> draw(painter, &matrix);
kdtree->search(draw, range);
}
// We let the bounding box only grow, so that when vertices get removed
// the maximal bbox gets refreshed in the GraphicsView
template <typename KdTree>
void
PointsInKdTreeGraphicsItem<KdTree>::updateBoundingBox()
{
prepareGeometryChange();
if(kdtree->size() == 0){
return;
}
bounding_rect = convert(CGAL::bounding_box(kdtree->begin(), kdtree->end()));
}
template <typename KdTree>
void
PointsInKdTreeGraphicsItem<KdTree>::modelChanged()
{
if((kdtree->size() == 0) ){
this->hide();
} else if((kdtree->size() > 0) && (! this->isVisible())){
this->show();
}
updateBoundingBox();
update();
}
} // namespace Qt
} // namespace CGAL
#endif // CGAL_QT_POINTS_IN_KD_TREE_GRAPHICS_ITEM_H
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