mirror of https://github.com/CGAL/cgal
364 lines
9.3 KiB
C++
364 lines
9.3 KiB
C++
#include <fstream>
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#include <boost/config.hpp>
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#include <boost/version.hpp>
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// CGAL headers
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#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
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#include <CGAL/Snap_rounding_traits_2.h>
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#include <CGAL/Snap_rounding_2.h>
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#include <CGAL/Snap_rounding_traits_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 <QActionGroup>
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#include <QFileDialog>
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#include <QInputDialog>
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// GraphicsView items and event filters (input classes)
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#include <CGAL/Qt/RegularGridGraphicsItem.h>
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#include <CGAL/Qt/SegmentsGraphicsItem.h>
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#include <CGAL/Qt/PolylinesGraphicsItem.h>
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#include <CGAL/Qt/GraphicsViewPolylineInput.h>
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#if (! defined(BOOST_GCC) || BOOST_GCC >= 40500)
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#include <CGAL/IO/WKT.h>
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#endif
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// for viewportsBbox
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#include <CGAL/Qt/utility.h>
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// the two base classes
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#include "ui_Snap_rounding_2.h"
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#include <CGAL/Qt/DemosMainWindow.h>
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typedef CGAL::Exact_predicates_exact_constructions_kernel K;
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typedef CGAL::Snap_rounding_traits_2<K> Traits;
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typedef K::Point_2 Point_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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class MainWindow :
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public CGAL::Qt::DemosMainWindow,
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public Ui::Snap_rounding_2
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{
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Q_OBJECT
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private:
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QGraphicsScene scene;
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CGAL::Qt::RegularGridGraphicsItem<K> * rgi;
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CGAL::Qt::GraphicsViewPolylineInput<K> * pi;
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std::list<Segment_2> input;
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std::list<std::list<Point_2> > output;
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typedef CGAL::Qt::SegmentsGraphicsItem<std::list<Segment_2> > InputSegmentsGraphicsItem;
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typedef CGAL::Qt::PolylinesGraphicsItem<std::list<std::list<Point_2> > > OutputPolylinesGraphicsItem;
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InputSegmentsGraphicsItem * isgi;
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OutputPolylinesGraphicsItem *plgi;
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double delta;
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public:
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MainWindow();
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void resize(){
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this->graphicsView->setSceneRect(QRectF(0,0,20, 20));
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this->graphicsView->fitInView(0,0, 20, 20, Qt::KeepAspectRatio);
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}
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public Q_SLOTS:
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void processInput(CGAL::Object o);
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void on_actionLoadSegments_triggered();
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void on_actionClear_triggered();
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void on_actionSaveSegments_triggered();
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void on_actionRecenter_triggered();
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void on_actionShowGrid_toggled(bool checked);
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void on_actionShowInput_toggled(bool checked);
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void on_actionShowSnappedSegments_toggled(bool checked);
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void deltaChanged(double);
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virtual void open(QString fileName);
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Q_SIGNALS:
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void changed();
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};
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MainWindow::MainWindow()
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: DemosMainWindow(), delta(1.0)
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{
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setupUi(this);
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this->graphicsView->setAcceptDrops(false);
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isgi = new InputSegmentsGraphicsItem(&input);
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scene.addItem(isgi);
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plgi = new OutputPolylinesGraphicsItem(&output);
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scene.addItem(plgi);
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// inputs polylines with 2 points
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pi = new CGAL::Qt::GraphicsViewPolylineInput<K>(this, &scene, 2, false);
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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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// Manual handling of actions
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//
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QObject::connect(this->doubleSpinBox, SIGNAL(valueChanged(double)),
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this, SLOT(deltaChanged(double)));
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QObject::connect(this->actionQuit, SIGNAL(triggered()),
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this, SLOT(close()));
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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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this->graphicsView->setScene(&scene);
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// Turn the vertical axis upside down
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this->graphicsView->transform().scale(1, -1);
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this->graphicsView->setMouseTracking(true);
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rgi = new CGAL::Qt::RegularGridGraphicsItem<K>(delta, delta);
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QObject::connect(this, SIGNAL(changed()),
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rgi, SLOT(modelChanged()));
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QObject::connect(this, SIGNAL(changed()),
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isgi, SLOT(modelChanged()));
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QObject::connect(this, SIGNAL(changed()),
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plgi, SLOT(modelChanged()));
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rgi->setVerticesPen(QPen(Qt::red, 3, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
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rgi->setEdgesPen(QPen(Qt::gray, 0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
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scene.addItem(rgi);
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plgi->setEdgesPen(QPen(Qt::blue, 0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
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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_Snap_rounding_2.html");
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this->addAboutCGAL();
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this->addRecentFiles(this->menuFile, this->actionQuit);
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connect(this, SIGNAL(openRecentFile(QString)),
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this, SLOT(open(QString)));
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}
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void
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MainWindow::deltaChanged(double d)
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{
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if(delta == d){
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return;
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}
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delta = d;
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output.clear();
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CGAL::snap_rounding_2<Traits,std::list<Segment_2>::const_iterator,std::list<std::list<Point_2> > >(input.begin(), input.end(), output, delta, true, false);
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rgi->setDelta(delta, delta);
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Q_EMIT( changed());
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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> points;
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if(CGAL::assign(points, o)){
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if(points.size() == 2) {
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input.push_back(Segment_2(points.front(), points.back()));
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output.clear();
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CGAL::snap_rounding_2<Traits,std::list<Segment_2>::const_iterator,std::list<std::list<Point_2> > >(input.begin(), input.end(), output, delta, true, false);
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}
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else {
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std::cerr << points.size() << std::endl;
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}
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}
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Q_EMIT( changed());
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}
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/*
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* Qt Automatic Connections
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* https://doc.qt.io/qt-5/designer-using-a-ui-file.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::on_actionClear_triggered()
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{
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input.clear();
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output.clear();
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Q_EMIT( changed());
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}
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void
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MainWindow::on_actionShowGrid_toggled(bool checked)
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{
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rgi->setVisible(checked);
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Q_EMIT( changed());
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}
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void
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MainWindow::on_actionShowInput_toggled(bool checked)
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{
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isgi->setVisible(checked);
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Q_EMIT( changed());
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}
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void
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MainWindow::on_actionShowSnappedSegments_toggled(bool checked)
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{
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plgi->setVisible(checked);
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Q_EMIT( changed());
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}
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void
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MainWindow::on_actionLoadSegments_triggered()
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{
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QString fileName = QFileDialog::getOpenFileName(this,
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tr("Open segment file"),
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".",
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tr("Edge files (*.edg);;"
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#if (! defined(BOOST_GCC) || BOOST_GCC >= 40500)
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"WKT files (*.wkt *.WKT);;"
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#endif
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"All files (*)"));
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if(! fileName.isEmpty()){
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open(fileName);
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}
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}
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void
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MainWindow::open(QString fileName)
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{
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// wait cursor
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QApplication::setOverrideCursor(Qt::WaitCursor);
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std::ifstream ifs(qPrintable(fileName));
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if(fileName.endsWith(".wkt", Qt::CaseInsensitive))
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{
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#if (! defined(BOOST_GCC) || BOOST_GCC >= 40500)
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std::vector<std::vector<Point_2> > mls;
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CGAL::read_multi_linestring_WKT(ifs, mls);
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for(const std::vector<Point_2>& ls : mls)
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{
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if(ls.size() > 2)
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continue;
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Segment_2 seg(ls[0], ls[1]);
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input.push_back(seg);
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}
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#endif
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}
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else {
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std::copy(std::istream_iterator<Segment_2>(ifs),
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std::istream_iterator<Segment_2>(),
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std::back_inserter(input));
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}
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output.clear();
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CGAL::snap_rounding_2<Traits,std::list<Segment_2>::const_iterator,std::list<std::list<Point_2> > >(input.begin(), input.end(), output, delta, true, false);
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ifs.close();
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// default cursor
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QApplication::restoreOverrideCursor();
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this->addToRecentFiles(fileName);
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on_actionRecenter_triggered();
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Q_EMIT( changed());
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}
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void
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MainWindow::on_actionSaveSegments_triggered()
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{
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QString fileName = QFileDialog::getSaveFileName(this,
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tr("Save points"),
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".",
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tr("Edge files (*.edg);;"
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#if (! defined(BOOST_GCC) || BOOST_GCC >= 40500)
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"WKT files (*.wkt *.WKT);;"
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#endif
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"All files (*)"));
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if(! fileName.isEmpty()){
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std::ofstream ofs(qPrintable(fileName));
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ofs.precision(12);
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if(fileName.endsWith(".wkt", Qt::CaseInsensitive))
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{
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#if (! defined(BOOST_GCC) || BOOST_GCC >= 40500)
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std::vector<std::vector<Point_2> >mls;
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for(const Segment_2& seg : input)
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{
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std::vector<Point_2> ls(2);
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ls[0] = seg.source();
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ls[1] = seg.target();
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mls.push_back(ls);
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}
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CGAL::write_multi_linestring_WKT(ofs, mls);
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#endif
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}
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else
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std::copy(input.begin(), input.end(), std::ostream_iterator<Segment_2>(ofs, "\n"));
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}
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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(isgi->boundingRect());
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this->graphicsView->fitInView(isgi->boundingRect(), Qt::KeepAspectRatio);
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}
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#include "Snap_rounding_2.moc"
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#include <CGAL/Qt/resources.h>
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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("Snap_rounding_2 demo");
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// Import resources from libCGAL (Qt5).
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// See https://doc.qt.io/qt-5/qdir.html#Q_INIT_RESOURCE
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CGAL_QT_INIT_RESOURCES;
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Q_INIT_RESOURCE(Snap_rounding_2);
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MainWindow mainWindow;
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mainWindow.show();
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mainWindow.resize();
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return app.exec();
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}
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