main.cpp Example File
graphicsview/collidingmice/main.cpp
#include <QtWidgets>
#include <math.h>
#include "mouse.h"
static const int MouseCount = 7;
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QGraphicsScene scene;
scene.setSceneRect(-300, -300, 600, 600);
scene.setItemIndexMethod(QGraphicsScene::NoIndex);
for (int i = 0; i < MouseCount; ++i) {
Mouse *mouse = new Mouse;
mouse->setPos(::sin((i * 6.28) / MouseCount) * 200,
::cos((i * 6.28) / MouseCount) * 200);
scene.addItem(mouse);
}
QGraphicsView view(&scene);
view.setRenderHint(QPainter::Antialiasing);
view.setBackgroundBrush(QPixmap(":/images/cheese.jpg"));
view.setCacheMode(QGraphicsView::CacheBackground);
view.setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
view.setDragMode(QGraphicsView::ScrollHandDrag);
view.setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Colliding Mice"));
view.resize(400, 300);
view.show();
QTimer timer;
QObject::connect(&timer, SIGNAL(timeout()), &scene, SLOT(advance()));
timer.start(1000 / 33);
return app.exec();
}