314 lines
7.4 KiB
C++
Executable File
314 lines
7.4 KiB
C++
Executable File
// 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).
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// You can redistribute it and/or modify it under the terms of the GNU
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// General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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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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// SPDX-License-Identifier: GPL-3.0+
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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_TRIANGULATION_GRAPHICS_ITEM_H
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#define CGAL_QT_TRIANGULATION_GRAPHICS_ITEM_H
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#include <CGAL/license/GraphicsView.h>
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#include <CGAL/Bbox_2.h>
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#include <CGAL/apply_to_range.h>
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#include <CGAL/Qt/PainterOstream.h>
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#include <CGAL/Qt/GraphicsItem.h>
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#include <CGAL/Qt/Converter.h>
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#include <QGraphicsScene>
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#include <QPainter>
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#include <QStyleOption>
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namespace CGAL {
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namespace Qt {
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template <typename T>
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class TriangulationGraphicsItem : public GraphicsItem
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{
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typedef typename T::Geom_traits Geom_traits;
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public:
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TriangulationGraphicsItem(T* t_);
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void modelChanged();
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public:
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QRectF boundingRect() const;
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
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virtual void operator()(typename T::Face_handle fh);
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const QPen& verticesPen() const
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{
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return vertices_pen;
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}
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QPen& verticesPen()
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{
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return vertices_pen;
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}
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const QPen& edgesPen() const
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{
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return edges_pen;
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}
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QPen& edgesPen()
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{
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return edges_pen;
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}
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void setVerticesPen(const QPen& pen)
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{
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vertices_pen = pen;
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}
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void setEdgesPen(const QPen& pen)
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{
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edges_pen = pen;
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}
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bool visibleVertices() const
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{
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return visible_vertices;
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}
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void setVisibleVertices(const bool b)
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{
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visible_vertices = b;
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update();
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}
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bool visibleEdges() const
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{
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return visible_edges;
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}
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void setVisibleEdges(const bool b)
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{
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visible_edges = b;
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update();
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}
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protected:
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virtual void drawAll(QPainter *painter);
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void paintVertices(QPainter *painter);
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void paintOneVertex(const typename T::Point& point);
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virtual void paintVertex(typename T::Vertex_handle vh);
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void updateBoundingBox();
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T * t;
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QPainter* m_painter;
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PainterOstream<Geom_traits> painterostream;
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typename T::Vertex_handle vh;
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typename T::Point p;
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CGAL::Bbox_2 bb;
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bool bb_initialized;
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QRectF bounding_rect;
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QPen vertices_pen;
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QPen edges_pen;
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bool visible_edges;
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bool visible_vertices;
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};
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template <typename T>
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TriangulationGraphicsItem<T>::TriangulationGraphicsItem(T * t_)
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: t(t_), painterostream(0),
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bb(0,0,0,0), bb_initialized(false),
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visible_edges(true), visible_vertices(true)
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{
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setVerticesPen(QPen(::Qt::red, 4.));
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setEdgesPen(QPen(::Qt::black, 0, ::Qt::SolidLine, ::Qt::RoundCap, ::Qt::RoundJoin));
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if(t->number_of_vertices() == 0){
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this->hide();
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}
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updateBoundingBox();
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setZValue(3);
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}
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template <typename T>
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QRectF
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TriangulationGraphicsItem<T>::boundingRect() const
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{
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return bounding_rect;
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}
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template <typename T>
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void
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TriangulationGraphicsItem<T>::operator()(typename T::Face_handle fh)
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{
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if(visible_edges) {
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for (int i=0; i<3; i++) {
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if (fh < fh->neighbor(i) || t->is_infinite(fh->neighbor(i))){
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m_painter->setPen(this->edgesPen());
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painterostream << t->segment(fh,i);
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}
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}
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}
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if(visible_vertices) {
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for (int i=0; i<3; i++) {
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paintVertex(fh->vertex(i));
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}
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}
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}
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template <typename T>
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void
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TriangulationGraphicsItem<T>::drawAll(QPainter *painter)
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{
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painterostream = PainterOstream<Geom_traits>(painter);
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if(visibleEdges()) {
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for(typename T::Finite_edges_iterator eit = t->finite_edges_begin();
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eit != t->finite_edges_end();
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++eit){
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painterostream << t->segment(*eit);
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}
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}
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paintVertices(painter);
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}
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template <typename T>
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void
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TriangulationGraphicsItem<T>::paintVertices(QPainter *painter)
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{
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if(visibleVertices()) {
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Converter<Geom_traits> convert;
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painter->setPen(verticesPen());
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QMatrix matrix = painter->matrix();
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painter->resetMatrix();
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for(typename T::Finite_vertices_iterator it = t->finite_vertices_begin();
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it != t->finite_vertices_end();
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it++){
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QPointF point = matrix.map(convert(it->point()));
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painter->drawPoint(point);
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}
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}
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}
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template <typename T>
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void
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TriangulationGraphicsItem<T>::paintOneVertex(const typename T::Point& point)
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{
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Converter<Geom_traits> convert;
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m_painter->setPen(this->verticesPen());
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QMatrix matrix = m_painter->matrix();
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m_painter->resetMatrix();
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m_painter->drawPoint(matrix.map(convert(point)));
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m_painter->setMatrix(matrix);
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}
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template <typename T>
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void
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TriangulationGraphicsItem<T>::paintVertex(typename T::Vertex_handle vh)
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{
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Converter<Geom_traits> convert;
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m_painter->setPen(this->verticesPen());
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QMatrix matrix = m_painter->matrix();
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m_painter->resetMatrix();
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m_painter->drawPoint(matrix.map(convert(vh->point())));
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m_painter->setMatrix(matrix);
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}
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template <typename T>
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void
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TriangulationGraphicsItem<T>::paint(QPainter *painter,
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const QStyleOptionGraphicsItem *option,
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QWidget * /*widget*/)
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{
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painter->setPen(this->edgesPen());
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// painter->drawRect(boundingRect());
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if ( t->dimension()<2 || option->exposedRect.contains(boundingRect()) ) {
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drawAll(painter);
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} else {
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m_painter = painter;
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painterostream = PainterOstream<Geom_traits>(painter);
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CGAL::apply_to_range (*t,
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typename T::Point(option->exposedRect.left(),
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option->exposedRect.bottom()),
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typename T::Point(option->exposedRect.right(),
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option->exposedRect.top()),
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*this);
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}
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}
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// We let the bounding box only grow, so that when vertices get removed
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// the maximal bbox gets refreshed in the GraphicsView
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template <typename T>
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void
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TriangulationGraphicsItem<T>::updateBoundingBox()
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{
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prepareGeometryChange();
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if(t->number_of_vertices() == 0){
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bb = Bbox_2(0,0,0,0);
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bb_initialized = false;
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return;
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} else if(! bb_initialized){
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bb = t->finite_vertices_begin()->point().bbox();
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bb_initialized = true;
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}
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if(t->dimension() <2){
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for(typename T::Finite_vertices_iterator it = t->finite_vertices_begin();
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it != t->finite_vertices_end();
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++it){
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bb = bb + it->point().bbox();
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}
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} else {
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typename T::Vertex_handle inf = t->infinite_vertex();
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typename T::Vertex_circulator vc = t->incident_vertices(inf), done(vc);
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do {
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bb = bb + vc->point().bbox();
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++vc;
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} while(vc != done);
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}
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bounding_rect = QRectF(bb.xmin(),
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bb.ymin(),
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bb.xmax()-bb.xmin(),
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bb.ymax()-bb.ymin());
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}
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template <typename T>
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void
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TriangulationGraphicsItem<T>::modelChanged()
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{
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if((t->number_of_vertices() == 0) ){
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this->hide();
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} else if((t->number_of_vertices() > 0) && (! this->isVisible())){
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this->show();
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}
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updateBoundingBox();
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update();
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}
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} // namespace Qt
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} // namespace CGAL
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#endif // CGAL_QT_TRIANGULATION_GRAPHICS_ITEM_H
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