//// C++ Implementation: radar//// Description: ////// Author: zeki <czm@zeki>, (C) 2007//// Copyright: See COPYING file that comes with this distribution////#include <math.h>#include <QtGui>#include "radar.h"#include "target.h"RadarView::RadarView( QGraphicsScene * scene, QWidget * parent) :	QGraphicsView(scene, parent){	startTimer(1000);}void RadarView::timerEvent(QTimerEvent *){	QList<QGraphicsItem *> itemList = items();	QGraphicsItem *item;	foreach(item, itemList)	{		Target* target = (Target*) item;	   	target->setPos(target->mapToParent(target->speed * cos(target->course), 	   		target->speed * sin(target->course)));	}}