mirror of https://github.com/CGAL/cgal
400 lines
11 KiB
C++
400 lines
11 KiB
C++
// Copyright (c) 1997-2002 INRIA Sophia-Antipolis (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) : Radu Ursu
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#include <CGAL/basic.h>
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// if QT is not installed, a message will be issued in runtime.
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#ifndef CGAL_USE_QT
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#include <iostream>
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int main()
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{
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std::cout << "Sorry, this demo needs QT." << std::endl;
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return 0;
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}
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#else
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//Application headers
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#include "cgal_types.h"
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#include "delaunay_triangulation_2_toolbar.h"
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#include "delaunay_triangulation_2_toolbar_layers.h"
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//Qt_widget headers
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#include <CGAL/IO/Qt_widget.h>
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#include <CGAL/IO/Qt_widget_standard_toolbar.h>
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#include <CGAL/IO/Qt_help_window.h>
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#include <CGAL/IO/pixmaps/demoicon.xpm>
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//STL headers
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#include <fstream>
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#include <stack>
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#include <set>
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#include <string>
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//Qt headers
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#include <qplatinumstyle.h>
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#include <qapplication.h>
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#include <qmainwindow.h>
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#include <qstatusbar.h>
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#include <qmessagebox.h>
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#include <qpopupmenu.h>
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#include <qmenubar.h>
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#include <qtoolbutton.h>
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#include <qtoolbar.h>
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#include <qfiledialog.h>
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#include <qtimer.h>
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const QString my_title_string("Delaunay Triangulation Demo with"
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" CGAL Qt_widget");
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Delaunay tr1;
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int current_state;
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Coord_type xmin, ymin, xmax, ymax;
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class Window : public QMainWindow
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{
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Q_OBJECT
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public:
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Window(int w, int h)
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{
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widget = new CGAL::Qt_widget(this);
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setCentralWidget(widget);
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connect(widget, SIGNAL(s_mouseReleaseEvent(QMouseEvent*)), this,
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SLOT(insert_after_show_conflicts(QMouseEvent*)));
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//create a timer for checking if somthing changed
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QTimer *timer = new QTimer( this );
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connect( timer, SIGNAL(timeout()),
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this, SLOT(timerDone()) );
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timer->start( 200, FALSE );
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// file menu
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QPopupMenu * file = new QPopupMenu( this );
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menuBar()->insertItem( "&File", file );
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file->insertItem("&New", this, SLOT(new_instance()), CTRL+Key_N);
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file->insertItem("New &Window", this, SLOT(new_window()), CTRL+Key_W);
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file->insertSeparator();
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file->insertItem("&Load Triangulation", this,
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SLOT(load_triangulation()), CTRL+Key_L);
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file->insertItem("&Save Triangulation", this,
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SLOT(save_triangulation()), CTRL+Key_S);
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file->insertSeparator();
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file->insertItem("Print", widget, SLOT(print_to_ps()), CTRL+Key_P);
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file->insertSeparator();
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file->insertItem( "&Close", this, SLOT(close()), CTRL+Key_X );
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file->insertItem( "&Quit", qApp,
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SLOT( closeAllWindows() ), CTRL+Key_Q );
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// edit menu
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QPopupMenu * edit = new QPopupMenu( this );
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menuBar()->insertItem( "&Edit", edit );
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edit->insertItem("&Generate_triangulation", this,
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SLOT(generate_triangulation()), CTRL+Key_G );
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// help menu
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QPopupMenu * help = new QPopupMenu( this );
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menuBar()->insertItem( "&Help", help );
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help->insertItem("How To", this, SLOT(howto()), Key_F1);
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help->insertSeparator();
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help->insertItem("&About", this, SLOT(about()), CTRL+Key_A );
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help->insertItem("About &Qt", this, SLOT(aboutQt()) );
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//the standard toolbar
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stoolbar = new CGAL::Qt_widget_standard_toolbar (widget, this, "ST");
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//the new tools toolbar
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newtoolbar = new Tools_toolbar(widget, this, &tr1);
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//the new scenes toolbar
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vtoolbar = new Layers_toolbar(widget, this, &tr1);
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// *widget << CGAL::BackgroundColor (CGAL::BLACK);
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*widget << CGAL::BackgroundColor (CGAL::WHITE);
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*widget << CGAL::LineWidth(2);
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resize(w,h);
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widget->set_window(-1, 1, -1, 1);
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widget->setMouseTracking(TRUE);
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//connect the widget to the main function that receives the objects
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connect(widget, SIGNAL(new_cgal_object(CGAL::Object)),
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this, SLOT(get_new_object(CGAL::Object)));
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connect(newtoolbar, SIGNAL(changed()),
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this, SLOT(something_changed()));
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//application flag stuff
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got_point = FALSE;
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old_state = 0;
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triangulation_changed = true;
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};
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void init_coordinates(){
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xmin = -1; xmax = 1;
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ymin = -1; ymax = 1;
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}
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private slots:
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void new_instance(){
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widget->lock();
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widget->clear();
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stoolbar->clear_history();
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tr1.clear();
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// set the Visible Area to the Interval
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widget->set_window(-1.1, 1.1, -1.1, 1.1);
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widget->unlock();
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triangulation_changed = true;
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something_changed();
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}
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void get_new_object(CGAL::Object obj){
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Point_2 p;
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Segment s;
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Line l;
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if (CGAL::assign(l,obj))
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{
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if (tr1.dimension()<2) return;
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widget->redraw();
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widget->lock();
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Line_face_circulator lfc =
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tr1.line_walk(l.point(1), l.point(2)), done(lfc);
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if(lfc == (CGAL_NULL_TYPE) NULL){
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} else {
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*widget << CGAL::BLUE;
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*widget << CGAL::FillColor(CGAL::YELLOW);
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do{
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if(! tr1.is_infinite( lfc ))
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*widget << tr1.triangle( lfc );
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}while(++lfc != done);
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}
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*widget << CGAL::GREEN << l ;
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*widget << CGAL::noFill;
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widget->unlock();
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} else if(CGAL::assign(p,obj)) {
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got_point = TRUE;
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show_conflicts(p);
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tr1.insert(p);
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triangulation_changed = true;
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}
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}
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void insert_after_show_conflicts(QMouseEvent*){
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if(got_point)
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{
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got_point = FALSE;
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something_changed();
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}
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}
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void howto(){
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QString home;
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home = "help/index.html";
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CGAL::Qt_help_window *help = new
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CGAL::Qt_help_window(home, ".", 0, "help viewer");
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help->resize(400, 400);
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help->setCaption("Demo HowTo");
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help->show();
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}
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void about(){
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QMessageBox::about( this, my_title_string,
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"This is a demo for Delaunay Triangulation 2,\n"
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"Copyright CGAL @2001");
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}
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void aboutQt(){
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QMessageBox::aboutQt( this, my_title_string );
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}
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void new_window(){
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Window *ed = new Window(500, 500);
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ed->setCaption("Layer");
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if(tr1.number_of_vertices() > 1){
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Vertex_iterator it = tr1.vertices_begin();
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xmin = xmax = (*it).point().x();
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ymin = ymax = (*it).point().y();
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while(it != tr1.vertices_end()) {
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if(xmin > (*it).point().x())
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xmin = (*it).point().x();
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if(xmax < (*it).point().x())
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xmax = (*it).point().x();
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if(ymin > (*it).point().y())
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ymin = (*it).point().y();
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if(ymax < (*it).point().y())
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ymax = (*it).point().y();
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it++;
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}
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}
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ed->stoolbar->clear_history();
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ed->widget->set_window(xmin, xmax, ymin, ymax);
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ed->show();
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something_changed();
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}
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void timerDone(){
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if(triangulation_changed){
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if(tr1.number_of_vertices() > 2)
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newtoolbar->set_line_enabled(true);
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else
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newtoolbar->set_line_enabled(false);
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if(tr1.number_of_vertices() > 2)
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newtoolbar->set_move_enabled(true);
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else
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newtoolbar->set_move_enabled(false);
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triangulation_changed = false;
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}
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if(old_state!=current_state){
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widget->redraw();
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old_state = current_state;
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triangulation_changed = true;
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}
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}
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void generate_triangulation(){
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tr1.clear();
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CGAL::Random_points_in_disc_2<Point_2> g(0.5);
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for(int count=0; count<200; count++)
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tr1.insert(*g++);
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Vertex_iterator it = tr1.vertices_begin();
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xmin = xmax = (*it).point().x();
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ymin = ymax = (*it).point().y();
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while(it != tr1.vertices_end()) {
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if(xmin > (*it).point().x())
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xmin = (*it).point().x();
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if(xmax < (*it).point().x())
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xmax = (*it).point().x();
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if(ymin > (*it).point().y())
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ymin = (*it).point().y();
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if(ymax < (*it).point().y())
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ymax = (*it).point().y();
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it++;
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}
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stoolbar->clear_history();
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widget->set_window(xmin, xmax, ymin, ymax);
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triangulation_changed = true;
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something_changed();
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}
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void save_triangulation()
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{
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QString fileName =
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QFileDialog::getSaveFileName( "triangulation.cgal",
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"Cgal files (*.cgal)", this );
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if ( !fileName.isNull() ) {
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// got a file name
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std::ofstream out(fileName);
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CGAL::set_ascii_mode(out);
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out << tr1 << std::endl;
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}
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}
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void load_triangulation()
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{
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QString s( QFileDialog::getOpenFileName( QString::null,
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"CGAL files (*.cgal)", this ) );
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if ( s.isEmpty() )
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return;
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tr1.clear();
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std::ifstream in(s);
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CGAL::set_ascii_mode(in);
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in >> tr1;
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Vertex_iterator it = tr1.vertices_begin();
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xmin = xmax = (*it).point().x();
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ymin = ymax = (*it).point().y();
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while(it != tr1.vertices_end()) {
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if(xmin > (*it).point().x())
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xmin = (*it).point().x();
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if(xmax < (*it).point().x())
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xmax = (*it).point().x();
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if(ymin > (*it).point().y())
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ymin = (*it).point().y();
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if(ymax < (*it).point().y())
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ymax = (*it).point().y();
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it++;
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}
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stoolbar->clear_history();
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widget->set_window(xmin, xmax, ymin, ymax);
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something_changed();
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}
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private:
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void show_conflicts(Point_2 p)
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{
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if(tr1.dimension()<2) return;
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std::list<Face_handle> conflict_faces;
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std::list<Edge> hole_bd;
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tr1.get_conflicts_and_boundary(p,
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std::back_inserter(conflict_faces),
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std::back_inserter(hole_bd));
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std::list<Face_handle>::iterator fit = conflict_faces.begin();
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std::list<Edge>::iterator eit = hole_bd.begin();
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*widget << CGAL::BLUE ;
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*widget << CGAL::FillColor(CGAL::YELLOW);
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for( ; fit != conflict_faces.end(); fit++) {
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if(! tr1.is_infinite( *fit))
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*widget << tr1.triangle( *fit );
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}
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*widget << CGAL::GREEN;
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for( ; eit != hole_bd.end(); eit++) {
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if(! tr1.is_infinite( *eit ))
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*widget << tr1.segment( *eit );
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}
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*widget << CGAL::noFill;
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}
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public slots:
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inline void something_changed(){current_state++;};
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private:
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CGAL::Qt_widget *widget;
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CGAL::Qt_widget_standard_toolbar *stoolbar;
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Tools_toolbar *newtoolbar;
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Layers_toolbar *vtoolbar;
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bool got_point;
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//if a CGAL::Point is received should be true
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bool triangulation_changed;
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//true only when triangulation has changed
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int old_state;
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};//endclass
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#include "delaunay_triangulation_2.moc"
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int
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main(int argc, char **argv)
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{
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QApplication app( argc, argv );
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Window W(600,600); // physical widgetdow size
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app.setMainWidget(&W);
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W.setCaption(my_title_string);
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W.setMouseTracking(TRUE);
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#if !defined (__POWERPC__)
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QPixmap cgal_icon = QPixmap((const char**)demoicon_xpm);
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W.setIcon(cgal_icon);
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#endif
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W.show();
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W.init_coordinates();
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current_state = -1;
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return app.exec();
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}
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#endif // CGAL_USE_QT
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