void
MainWindow::processInput(CGAL::Object o)
{
bool was_empty = triang.empty();
Point_2 p;
if(CGAL::assign(p, o)) {
double dx = triang.domain().xmax() - triang.domain().xmin();
double dy = triang.domain().ymax() - triang.domain().ymin();
p = Point_2(p.x()- std::floor(p.x()/dx),
p.y()- std::floor(p.y()/dy));
triang.insert(p);
}
Q_EMIT( changed());
if (was_empty)
on_actionRecenter_triggered();
}
void
MainWindow::on_actionGenerate_triggered()
{
stream_lines = new Stream_lines(*regular_grid, *runge_kutta_integrator, density, ratio, sampling);
sli = new CGAL::Qt::StreamLinesGraphicsItem<Stream_lines, K>(stream_lines);
rgi = new CGAL::Qt::RegularGridVectorFieldGraphicsItem<Regular_grid, K>(regular_grid);
QObject::connect(this, SIGNAL(changed()),
sli, SLOT(modelChanged()));
rgi->setVerticesPen(QPen(Qt::red, 3, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
rgi->setEdgesPen(QPen(Qt::gray, 0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
sli->setEdgesPen(QPen(Qt::blue, 0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
scene.addItem(sli);
scene.addItem(rgi);
on_actionRecenter_triggered();
emit(changed());
}
void
MainWindow::on_actionInsertRandomPoints_triggered()
{
CGAL::Random_points_in_iso_rectangle_2<Point_2> pg((triang.domain().min)(),
(triang.domain().max)());
bool ok = false;
const int number_of_points =
QInputDialog::getInt(this,
tr("Number of random points"),
tr("Enter number of random points"),
250,
0,
(std::numeric_limits<int>::max)(),
1,
&ok);
if(!ok) {
return;
}
// wait cursor
QApplication::setOverrideCursor(Qt::WaitCursor);
std::vector<Point_2> points;
points.reserve(number_of_points);
for(int i = 0; i < number_of_points; ++i){
points.push_back(*pg++);
}
triang.insert(points.begin(), points.end(), true);
// default cursor
QApplication::restoreOverrideCursor();
on_actionRecenter_triggered();
Q_EMIT( changed());
}
MainWindow::MainWindow()
: DemosMainWindow()
{
setupUi(this);
this->graphicsView->setAcceptDrops(false);
// Add a GraphicItem for the Periodic triangulation
pt_gi = new CGAL::Qt::PeriodicTriangulationGraphicsItem<Periodic_DT>(&triang);
QObject::connect(this, SIGNAL(changed()),
pt_gi, SLOT(modelChanged()));
pt_gi->setVerticesPen(QPen(Qt::red, 5, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
scene.addItem(pt_gi);
// Add a GraphicItem for the Voronoi diagram
vgi = new CGAL::Qt::PeriodicTriangulationVoronoiGraphicsItem<Periodic_DT>(&triang);
QObject::connect(this, SIGNAL(changed()),
vgi, SLOT(modelChanged()));
vgi->setEdgesPen(QPen(Qt::blue, 0, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
scene.addItem(vgi);
vgi->hide();
// Setup input handlers. They get events before the scene gets them
// and the input they generate is passed to the triangulation with
// the signal/slot mechanism
pt_pi = new CGAL::Qt::TriangulationPointInputAndConflictZone<Periodic_DT>(&scene, &triang, this );
QObject::connect(pt_pi, SIGNAL(generate(CGAL::Object)),
this, SLOT(processInput(CGAL::Object)));
pt_mp = new CGAL::Qt::TriangulationMovingPoint<Periodic_DT>(&triang, this);
// TriangulationMovingPoint<Periodic_DT> emits a modelChanged() signal each
// time the moving point moves.
// The following connection is for the purpose of emitting changed().
QObject::connect(pt_mp, SIGNAL(modelChanged()),
this, SIGNAL(changed()));
pt_cz = new CGAL::Qt::TriangulationConflictZone<Periodic_DT>(&scene, &triang, this);
QObject::connect(pt_cz, SIGNAL(modelChanged()),
this, SIGNAL(changed()));
pt_rv = new CGAL::Qt::TriangulationRemoveVertex<Periodic_DT>(&triang, this);
QObject::connect(pt_rv, SIGNAL(modelChanged()),
this, SIGNAL(changed()));
pt_cc = new CGAL::Qt::TriangulationCircumcircle<Periodic_DT>(&scene, &triang, this);
pt_cc ->setPen(QPen(::Qt::black, .01));
QObject::connect(pt_cc, SIGNAL(modelChanged()),
this, SIGNAL(changed()));
//
// Manual handling of actions
//
QObject::connect(this->actionQuit, SIGNAL(triggered()),
this, SLOT(close()));
// We put mutually exclusive actions in an QActionGroup
QActionGroup* ag = new QActionGroup(this);
ag->addAction(this->actionInsertPoint);
ag->addAction(this->actionMovingPoint);
ag->addAction(this->actionCircumcenter);
ag->addAction(this->actionShowConflictZone);
// Check two actions
this->actionInsertPoint->setChecked(true);
this->actionShowDelaunay->setChecked(true);
//
// Setup the scene and the view
//
scene.setItemIndexMethod(QGraphicsScene::NoIndex);
scene.setSceneRect(0, 0, 1, 1);
this->graphicsView->setScene(&scene);
this->graphicsView->setMouseTracking(true);
// Turn the vertical axis upside down
this->graphicsView->matrix().scale(1, -1);
// The navigation adds zooming and translation functionality to the
// QGraphicsView
this->addNavigation(this->graphicsView);
this->setupStatusBar();
this->setupOptionsMenu();
this->addAboutDemo(":/cgal/help/about_Periodic_2_triangulation_2.html");
this->addAboutCGAL();
this->addRecentFiles(this->menuFile, this->actionQuit);
connect(this, SIGNAL(openRecentFile(QString)),
this, SLOT(open(QString)));
on_actionRecenter_triggered();
}
