main.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
#include <QtWidgets>
#include <math.h>
 
int main(int argv, char *args[])
{
    QApplication app(argv, args);
 
    QGraphicsItem *ball = new QGraphicsEllipseItem(0, 0, 20, 20);
 
    QTimeLine *timer = new QTimeLine(5000);
    timer->setFrameRange(0, 100);
 
    QGraphicsItemAnimation *animation = new QGraphicsItemAnimation;
    animation->setItem(ball);
    animation->setTimeLine(timer);
 
    for (int i = 0; i < 200; ++i)
        animation->setPosAt(i / 200.0, QPointF(i, i));
 
    QGraphicsScene *scene = new QGraphicsScene;
    scene->setSceneRect(0, 0, 250, 250);
    scene->addItem(ball);
 
    QGraphicsView *view = new QGraphicsView(scene);
    view->show();
 
    timer->start();
 
    return app.exec();
}