main.cpp Example File

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  #include <QtWidgets>

  #include <math.h>

  #include "mouse.h"

  static const int MouseCount = 7;

  int main(int argc, char **argv)
  {
      QApplication app(argc, argv);
      qsrand(QTime(0, 0, 0).secsTo(QTime::currentTime()));

      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();
  }