initial commit of code tree
git-svn-id: http://svn.lsim.tuxzone.org/trunk@2 4bec179b-ab65-46ed-a5f8-55b8b5c735d0
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131
src/graphicsellipseitem.cpp
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131
src/graphicsellipseitem.cpp
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/***************************************************************************
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* Copyright (C) 2008 by Peter Dahlberg *
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* pdahlberg@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include "graphicsellipseitem.h"
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#include <QDrag>
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#include <QGraphicsSceneMouseEvent>
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#include <QMimeData>
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#include <QDebug>
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#include "simulscene.h"
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#include "probechargewidget.h"
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GraphicsEllipseItem::GraphicsEllipseItem() {
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setFlag(ItemIsMovable);
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setFlag(ItemIsSelectable);
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setFlag(ItemIsFocusable);
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//setCacheMode(QGraphicsItem::DeviceCoordinateCache);
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//startTimer(100);
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setMasse(9.10938188e-31);
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setCharge(-1.6e-19);
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myProbeChargeWidget = new ProbeChargeWidget(0,0,this);
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currProbePath = new QList<QPointF>;
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speedListX = new QList<double>;
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speedListY = new QList<double>;
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}
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void GraphicsEllipseItem::timerEvent ( QTimerEvent * event ) {
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static double vx;
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vx++;
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//moveBy(vx/20.0,vx/20.0*vx/20.0);
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}
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GraphicsEllipseItem::~GraphicsEllipseItem() {
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}
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void GraphicsEllipseItem::mousePressEvent ( QGraphicsSceneMouseEvent *event ) {
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//QGraphicsEllipseItem::mousePressEvent(event);
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}
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/*!
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\fn GraphicsEllipseItem::calculateProbePath()
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*/
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void GraphicsEllipseItem::calculateProbePath(QPointF startPoint, double startSpeedX , double startSpeedY) {
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SimulScene* myScene = dynamic_cast<SimulScene*>(scene());
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//wenn noch zu keiner scene gehoerend abbruch
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if (myScene == 0) return;
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//parameter der scene in lokale variablen uebernehmen
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double timePerStep = myScene->getTimePerStep();
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int steps = myScene->getSteps();
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double meterPerPx = myScene->getMeterPerPx();
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//listen leeren
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currProbePath->clear();
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speedListX->clear();
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speedListY->clear();
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//startwerte in die listen setzen
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currProbePath->append(startPoint);
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speedListX->append(startSpeedX);
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speedListY->append(startSpeedY);
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for(int i = 1; i< steps;++i) {
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double powerX = myScene->getPowerAt(currProbePath->at(i-1), charge, 'x');
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double powerY = myScene->getPowerAt(currProbePath->at(i-1), charge, 'y');
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double deltaDistXconst = speedListX->at(i-1) * (timePerStep/1000.0);
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double deltaDistYconst = speedListY->at(i-1) * (timePerStep/1000.0);
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double deltaDistXaccel = 0.5 * (powerX/getMasse()) * (timePerStep/1000.0) * (timePerStep/1000.0);
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double deltaDistYaccel = 0.5 * (powerY/getMasse()) * (timePerStep/1000.0) * (timePerStep/1000.0);
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double deltaDistX = (deltaDistXconst + deltaDistXaccel);
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double deltaDistY = (deltaDistYconst + deltaDistYaccel);
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currProbePath->append(QPointF(currProbePath->at(i-1).x() + deltaDistX/meterPerPx,currProbePath->at(i-1).y() + deltaDistY/meterPerPx));
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speedListX->append(speedListX->at(i-1) + (powerX/getMasse()) * (timePerStep/1000.0));
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speedListY->append(speedListY->at(i-1) + (powerY/getMasse()) * (timePerStep/1000.0));
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}
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qDebug()<< "Probe Path: " <<*currProbePath;
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qDebug()<< "speed x: "<<*speedListX;
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qDebug()<< "speed y: "<<*speedListY;
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qDebug()<<currProbePath->at(12);
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qDebug()<<speedListY->at(12);
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qDebug()<<"power x: "<< (double)myScene->getPowerAt(QPointF(0,0), charge, 'x');
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qDebug()<<"power y: " << (double)myScene->getPowerAt(QPointF(0,0), charge, 'y');
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}
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long double GraphicsEllipseItem::getMasse() const {
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return masse;
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}
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void GraphicsEllipseItem::setMasse ( const long double& theValue ) {
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if (masse == theValue) return;
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masse = theValue;
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}
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long double GraphicsEllipseItem::getCharge() const {
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return charge;
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}
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void GraphicsEllipseItem::setCharge ( const long double& theValue ) {
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if (charge == theValue) return;
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charge = theValue;
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}
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QWidget * GraphicsEllipseItem::getDockWidget() const
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{
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return myProbeChargeWidget;
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}
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