C++/Qt/QTimeLine

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Adding animation with QTimeLine

<source lang="cpp"> /****************************************************************************

    • Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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    • This file is part of the documentation of the Qt Toolkit.
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    • General Public License version 2.1 as published by the Free Software
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    • Alternatively, this file may be used under the terms of the GNU
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                                                                                                                                                        • /
  1. include <QtGui>
  2. 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();

}


 </source>