mirror of https://github.com/CGAL/cgal
Qt4 based largest empty iso rectangle demo
This commit is contained in:
Andreas Fabri
parent
a5f3b43834
commit
4ff8be1faa
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@ -1432,6 +1432,9 @@ GraphicsView/demo/Circular_kernel_2/arcs.arc -text
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GraphicsView/demo/Generator/Generator_2.qrc -text
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GraphicsView/demo/Generator/Generator_2.ui -text
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GraphicsView/demo/Generator/about_Generator_2.html svneol=native#text/html
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GraphicsView/demo/Largest_empty_rect_2/Largest_empty_rectangle_2.qrc -text
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GraphicsView/demo/Largest_empty_rect_2/Largest_empty_rectangle_2.ui -text
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GraphicsView/demo/Largest_empty_rect_2/about_Largest_empty_rectangle_2.html svneol=native#text/html
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GraphicsView/demo/Polygon/Polygon_2.qrc -text
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GraphicsView/demo/Polygon/Polygon_2.ui -text
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GraphicsView/demo/Polygon/unweighted_polygon.poly -text
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@ -0,0 +1,56 @@
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# Created by the script cgal_create_cmake_script
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# This is the CMake script for compiling a CGAL application.
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project (Largest_empty_rectangleDemo)
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cmake_minimum_required(VERSION 2.4.5)
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set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
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if ( COMMAND cmake_policy )
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cmake_policy( SET CMP0003 NEW )
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endif()
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find_package(CGAL COMPONENTS Qt4)
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include(${CGAL_USE_FILE})
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set( QT_USE_QTXML TRUE )
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set( QT_USE_QTMAIN TRUE )
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set( QT_USE_QTSCRIPT TRUE )
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set( QT_USE_QTOPENGL TRUE )
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find_package(Qt4)
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include_directories (BEFORE ../../include)
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if ( CGAL_FOUND AND CGAL_Qt4_FOUND AND QT4_FOUND )
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include(${QT_USE_FILE})
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#--------------------------------
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# Demo: Largest_empty_rectangle_2
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#--------------------------------
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# UI files (Qt Designer files)
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qt4_wrap_ui( DT_UI_FILES Largest_empty_rectangle_2.ui )
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# qrc files (resources files, that contain icons, at least)
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qt4_add_resources ( DT_RESOURCE_FILES ./Largest_empty_rectangle_2.qrc )
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# use the Qt MOC preprocessor on classes that derives from QObject
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qt4_generate_moc( Largest_empty_rectangle_2.cpp Largest_empty_rectangle_2.moc )
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# The executable itself.
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add_executable ( Largest_empty_rectangle_2 Largest_empty_rectangle_2.cpp Largest_empty_rectangle_2.moc ${DT_UI_FILES} ${DT_RESOURCE_FILES} )
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add_to_cached_list( CGAL_EXECUTABLE_TARGETS Largest_empty_rectangle_2 )
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# Link with Qt libraries
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target_link_libraries( Largest_empty_rectangle_2 ${QT_LIBRARIES} )
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# And with CGAL libraries
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target_link_libraries( Largest_empty_rectangle_2 ${CGAL_LIBRARIES} ${CGAL_3RD_PARTY_LIBRARIES} )
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else()
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message(STATUS "NOTICE: This demo requires CGAL, and Qt4, and will not be compiled.")
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endif()
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@ -0,0 +1,288 @@
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#include <fstream>
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// CGAL headers
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#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
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#include <CGAL/point_generators_2.h>
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#include <CGAL/Largest_empty_iso_rectangle_2.h>
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// Qt headers
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#include <QtGui>
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#include <QString>
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#include <QFileDialog>
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#include <QGraphicsRectItem>
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#include <QGraphicsLineItem>
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// GraphicsView items and event filters (input classes)
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#include <CGAL/Qt/PointsGraphicsItem.h>
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#include <CGAL/Qt/GraphicsViewPolylineInput.h>
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#include <CGAL/Qt/utility.h>
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// the two base classes
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#include "ui_Largest_empty_rectangle_2.h"
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#include <CGAL/Qt/DemosMainWindow.h>
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typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
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typedef K::Point_2 Point_2;
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typedef K::Vector_2 Vector_2;
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typedef K::Segment_2 Segment_2;
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typedef K::Iso_rectangle_2 Iso_rectangle_2;
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typedef CGAL::Largest_empty_iso_rectangle_2<K> Largest_empty_iso_rectangle_2;
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class MainWindow :
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public CGAL::Qt::DemosMainWindow,
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public Ui::Largest_empty_rectangle_2
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{
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Q_OBJECT
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private:
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Iso_rectangle_2 square;
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Largest_empty_iso_rectangle_2 ler;
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CGAL::Qt::Converter<K> convert;
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std::vector<Point_2> points;
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QGraphicsScene scene;
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CGAL::Qt::PointsGraphicsItem<std::vector<Point_2> > * pgi;
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QGraphicsRectItem * rgi;
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QGraphicsLineItem* frame[4];
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CGAL::Qt::GraphicsViewPolylineInput<K> * pi;
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template <typename G>
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void
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on_actionGenerate_triggered()
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{
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Iso_rectangle_2 isor = square;
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Point_2 center = CGAL::midpoint(isor[0], isor[2]);
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Vector_2 offset = center - CGAL::ORIGIN;
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double w = isor.xmax() - isor.xmin();
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double h = isor.ymax() - isor.ymin();
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double radius = (w<h) ? w/2 : h/2;
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G pg(radius);
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bool ok = false;
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const int number_of_points =
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QInputDialog::getInteger(this,
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tr("Number of random points"),
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tr("Enter number of random points"),
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100,
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0,
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std::numeric_limits<int>::max(),
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1,
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&ok);
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if(!ok) {
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return;
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}
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// wait cursor
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QApplication::setOverrideCursor(Qt::WaitCursor);
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points.reserve(points.size() + number_of_points);
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for(int i = 0; i < number_of_points; ++i){
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points.push_back(*pg + offset);
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ler.insert(points.back());
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++pg;
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}
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// default cursor
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QApplication::restoreOverrideCursor();
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emit(changed());
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}
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public:
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MainWindow();
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public slots:
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void on_actionClear_triggered();
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void processInput(CGAL::Object);
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void on_actionRecenter_triggered();
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void on_actionGeneratePointsOnCircle_triggered();
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void on_actionGeneratePointsInSquare_triggered();
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void on_actionGeneratePointsInDisc_triggered();
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void clear();
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void update_largest_empty_rectangle();
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signals:
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void changed();
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};
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MainWindow::MainWindow()
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: DemosMainWindow(), square(Point_2(-1, -1), Point_2(1,1)), ler(square)
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{
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setupUi(this);
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// Add a GraphicItem for the point set
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pgi = new CGAL::Qt::PointsGraphicsItem<std::vector<Point_2> >(&points);
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rgi = new QGraphicsRectItem(convert(square));
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Point_2 bl(-1,-1), br(1,-1), tl(-1,1), tr(1,1);
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frame[0] = new QGraphicsLineItem(convert(Segment_2(bl, br)));
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frame[1] = new QGraphicsLineItem(convert(Segment_2(br, tr)));
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frame[2] = new QGraphicsLineItem(convert(Segment_2(tr, tl)));
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frame[3] = new QGraphicsLineItem(convert(Segment_2(tl, bl)));
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QObject::connect(this, SIGNAL(changed()),
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pgi, SLOT(modelChanged()));
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QObject::connect(this, SIGNAL(changed()),
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this, SLOT(update_largest_empty_rectangle()));
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pgi->setVerticesPen(QPen(Qt::red, 3, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
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rgi->setBrush(QBrush(Qt::cyan));
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scene.addItem(pgi);
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scene.addItem(rgi);
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scene.addItem(frame[0]);
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scene.addItem(frame[1]);
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scene.addItem(frame[2]);
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scene.addItem(frame[3]);
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//
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// Manual handling of actions
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//
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QObject::connect(this->actionQuit, SIGNAL(triggered()),
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this, SLOT(close()));
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pi = new CGAL::Qt::GraphicsViewPolylineInput<K>(this, &scene, 1, false); // inputs a list with one point
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QObject::connect(pi, SIGNAL(generate(CGAL::Object)),
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this, SLOT(processInput(CGAL::Object)));
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scene.installEventFilter(pi);
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//
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// Setup the scene and the view
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//
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scene.setItemIndexMethod(QGraphicsScene::NoIndex);
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scene.setSceneRect(-1, -1, 1, 1);
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this->graphicsView->setScene(&scene);
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// Uncomment the following line to get antialiasing by default.
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// actionUse_Antialiasing->setChecked(true);
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// Turn the vertical axis upside down
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this->graphicsView->scale(1, -1);
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// The navigation adds zooming and translation functionality to the
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// QGraphicsView
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this->addNavigation(this->graphicsView);
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this->setupStatusBar();
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this->setupOptionsMenu();
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this->addAboutDemo(":/cgal/help/about_Largest_empty_rectangle_2.html");
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this->addAboutCGAL();
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}
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/*
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* Qt Automatic Connections
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* http://doc.trolltech.com/4.4/designer-using-a-component.html#automatic-connections
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*
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* setupUi(this) generates connections to the slots named
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* "on_<action_name>_<signal_name>"
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*/
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void
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MainWindow::processInput(CGAL::Object o)
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{
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std::list<Point_2> input;
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if(CGAL::assign(input, o)){
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if(input.size() == 1) {
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Point_2 p = input.front();
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if(! square.has_on_unbounded_side(p)){
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points.push_back(p);
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ler.insert(p);
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}
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}
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emit(changed());
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}
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}
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void
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MainWindow::update_largest_empty_rectangle()
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{
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rgi->setRect(convert(ler.get_largest_empty_iso_rectangle()));
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}
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void
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MainWindow::on_actionClear_triggered()
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{
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clear();
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emit(changed());
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}
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void
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MainWindow::on_actionRecenter_triggered()
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{
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this->graphicsView->setSceneRect(convert(square));
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this->graphicsView->fitInView(convert(square), Qt::KeepAspectRatio);
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}
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void
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MainWindow::on_actionGeneratePointsOnCircle_triggered()
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{
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typedef CGAL::Random_points_on_circle_2<Point_2> Generator;
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on_actionGenerate_triggered<Generator>();
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}
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void
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MainWindow::on_actionGeneratePointsInSquare_triggered()
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{
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typedef CGAL::Random_points_in_square_2<Point_2> Generator;
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on_actionGenerate_triggered<Generator>();
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}
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void
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MainWindow::on_actionGeneratePointsInDisc_triggered()
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{
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typedef CGAL::Random_points_in_disc_2<Point_2> Generator;
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on_actionGenerate_triggered<Generator>();
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}
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void
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MainWindow::clear()
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{
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points.clear();
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ler.clear();
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rgi->setRect(convert(square));
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}
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#include "Largest_empty_rectangle_2.moc"
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int main(int argc, char **argv)
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{
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QApplication app(argc, argv);
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app.setOrganizationDomain("geometryfactory.com");
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app.setOrganizationName("GeometryFactory");
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app.setApplicationName("Largest_empty_rectangle_2 demo");
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// Import resources from libCGALQt4.
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// See http://doc.trolltech.com/4.4/qdir.html#Q_INIT_RESOURCE
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Q_INIT_RESOURCE(File);
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Q_INIT_RESOURCE(Largest_empty_rectangle_2);
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Q_INIT_RESOURCE(Input);
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Q_INIT_RESOURCE(CGAL);
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MainWindow mainWindow;
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mainWindow.show();
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mainWindow.on_actionRecenter_triggered();
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return app.exec();
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}
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@ -0,0 +1,6 @@
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<RCC>
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<qresource prefix="/cgal/help" >
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<file alias="about_CGAL.html" >../resources/about_CGAL.html</file>
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<file>about_Largest_empty_rectangle_2.html</file>
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</qresource>
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</RCC>
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@ -0,0 +1,210 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<author>GeometryFactory</author>
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<class>Largest_empty_rectangle_2</class>
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<widget class="QMainWindow" name="Largest_empty_rectangle_2">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>500</width>
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<height>500</height>
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</rect>
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</property>
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<property name="windowTitle">
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<string>CGAL 2D Largest Empty Iso Rectangle</string>
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</property>
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<property name="windowIcon">
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<iconset resource="../resources/CGAL.qrc">
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<normaloff>:/cgal/logos/cgal_icon</normaloff>:/cgal/logos/cgal_icon</iconset>
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</property>
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<widget class="QWidget" name="centralwidget">
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<layout class="QHBoxLayout">
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<item>
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<widget class="QSplitter" name="splitter">
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<property name="orientation">
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<enum>Qt::Horizontal</enum>
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</property>
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<widget class="QGraphicsView" name="graphicsView">
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<property name="sizePolicy">
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<sizepolicy hsizetype="Expanding" vsizetype="Expanding">
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<horstretch>2</horstretch>
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<verstretch>0</verstretch>
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</sizepolicy>
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</property>
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<property name="focusPolicy">
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<enum>Qt::StrongFocus</enum>
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</property>
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<property name="verticalScrollBarPolicy">
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<enum>Qt::ScrollBarAlwaysOn</enum>
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</property>
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<property name="horizontalScrollBarPolicy">
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<enum>Qt::ScrollBarAlwaysOn</enum>
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</property>
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<property name="transformationAnchor">
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<enum>QGraphicsView::NoAnchor</enum>
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</property>
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</widget>
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</widget>
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</item>
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</layout>
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</widget>
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<widget class="QStatusBar" name="statusbar"/>
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<widget class="QToolBar" name="fileToolBar">
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<property name="windowTitle">
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<string>File Tools</string>
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</property>
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<attribute name="toolBarArea">
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<enum>TopToolBarArea</enum>
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</attribute>
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<attribute name="toolBarBreak">
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<bool>false</bool>
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</attribute>
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<addaction name="actionClear"/>
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</widget>
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<widget class="QToolBar" name="toolBar">
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<property name="windowTitle">
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<string>Visualization Tools</string>
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</property>
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<attribute name="toolBarArea">
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<enum>TopToolBarArea</enum>
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</attribute>
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<attribute name="toolBarBreak">
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<bool>false</bool>
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</attribute>
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<addaction name="actionRecenter"/>
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</widget>
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<widget class="QMenuBar" name="menubar">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>500</width>
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<height>26</height>
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</rect>
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</property>
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<widget class="QMenu" name="menuFile">
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<property name="title">
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<string>&File</string>
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</property>
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<addaction name="separator"/>
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<addaction name="actionClear"/>
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<addaction name="separator"/>
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<addaction name="actionQuit"/>
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</widget>
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<widget class="QMenu" name="menuTools">
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||||
<property name="title">
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<string>&Algorithms</string>
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</property>
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<addaction name="separator"/>
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<addaction name="actionRecenter"/>
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<addaction name="actionGeneratePointsOnCircle"/>
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<addaction name="actionGeneratePointsInDisc"/>
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<addaction name="actionGeneratePointsInSquare"/>
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</widget>
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<addaction name="menuFile"/>
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||||
<addaction name="menuTools"/>
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||||
</widget>
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<action name="actionAbout">
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<property name="text">
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||||
<string>&About</string>
|
||||
</property>
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||||
</action>
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||||
<action name="actionAboutCGAL">
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||||
<property name="text">
|
||||
<string>About &CGAL</string>
|
||||
</property>
|
||||
</action>
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||||
<action name="actionQuit">
|
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<property name="text">
|
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<string>&Quit</string>
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</property>
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||||
<property name="shortcut">
|
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<string>Ctrl+Q</string>
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</property>
|
||||
</action>
|
||||
<action name="actionClear">
|
||||
<property name="icon">
|
||||
<iconset resource="../icons/File.qrc">
|
||||
<normaloff>:/cgal/fileToolbar/fileNew.png</normaloff>:/cgal/fileToolbar/fileNew.png</iconset>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>&Clear</string>
|
||||
</property>
|
||||
<property name="shortcut">
|
||||
<string>Ctrl+C</string>
|
||||
</property>
|
||||
</action>
|
||||
<action name="actionLoadGenerator">
|
||||
<property name="icon">
|
||||
<iconset resource="../icons/File.qrc">
|
||||
<normaloff>:/cgal/fileToolbar/fileOpen.png</normaloff>:/cgal/fileToolbar/fileOpen.png</iconset>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>&Load Generator</string>
|
||||
</property>
|
||||
<property name="shortcut">
|
||||
<string>Ctrl+L</string>
|
||||
</property>
|
||||
</action>
|
||||
<action name="actionSaveGenerator">
|
||||
<property name="icon">
|
||||
<iconset resource="../icons/File.qrc">
|
||||
<normaloff>:/cgal/fileToolbar/fileSave.png</normaloff>:/cgal/fileToolbar/fileSave.png</iconset>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>&Save Generator</string>
|
||||
</property>
|
||||
<property name="shortcut">
|
||||
<string>Ctrl+S</string>
|
||||
</property>
|
||||
</action>
|
||||
<action name="actionRecenter">
|
||||
<property name="icon">
|
||||
<iconset resource="../icons/Input.qrc">
|
||||
<normaloff>:/cgal/Input/zoom-best-fit</normaloff>:/cgal/Input/zoom-best-fit</iconset>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>Re&center the viewport</string>
|
||||
</property>
|
||||
<property name="shortcut">
|
||||
<string>Ctrl+R</string>
|
||||
</property>
|
||||
</action>
|
||||
<action name="actionCreateInputGenerator">
|
||||
<property name="checkable">
|
||||
<bool>true</bool>
|
||||
</property>
|
||||
<property name="text">
|
||||
<string>Create Input Generator</string>
|
||||
</property>
|
||||
</action>
|
||||
<action name="actionGeneratePointsOnCircle">
|
||||
<property name="text">
|
||||
<string>Generate Points on Circle</string>
|
||||
</property>
|
||||
</action>
|
||||
<action name="actionGeneratePointsInSquare">
|
||||
<property name="text">
|
||||
<string>Generate Points in Square</string>
|
||||
</property>
|
||||
</action>
|
||||
<action name="actionGeneratePointsInDisc">
|
||||
<property name="text">
|
||||
<string>Generate Points in Disc</string>
|
||||
</property>
|
||||
</action>
|
||||
<action name="actionGenerateSegmentFans">
|
||||
<property name="text">
|
||||
<string>Generate Segment Fans</string>
|
||||
</property>
|
||||
</action>
|
||||
</widget>
|
||||
<resources>
|
||||
<include location="Largest_empty_rectangle_2.qrc"/>
|
||||
<include location="../icons/File.qrc"/>
|
||||
<include location="../resources/CGAL.qrc"/>
|
||||
<include location="../icons/Input.qrc"/>
|
||||
</resources>
|
||||
<connections/>
|
||||
</ui>
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
<html>
|
||||
<body>
|
||||
<h2>2D Largest Empty Iso Rectangle</h2>
|
||||
<p>Copyright © 2010 GeometryFactory</p>
|
||||
<p>This application illustrates the 2D largest empty iso rectangle
|
||||
of <a href="http://www.cgal.org/">CGAL</a></p>
|
||||
<p>See also <a href="http://www.cgal.org/Pkg/InscribedAreas">the online
|
||||
manual</a>.</p>
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Reference in New Issue