From 792fecff9ecda984d7bf8ed0f7780125a74a8ae1 Mon Sep 17 00:00:00 2001
From: catdog2 <catdog2@4bec179b-ab65-46ed-a5f8-55b8b5c735d0>
Date: Tue, 16 Dec 2008 21:59:25 +0000
Subject: [PATCH] variable zeitschritte: quadratische gleichung abschaetzung

git-svn-id: http://svn.lsim.tuxzone.org/trunk@32 4bec179b-ab65-46ed-a5f8-55b8b5c735d0
---
 lsim.kdevelop.pcs           | Bin 201769 -> 171014 bytes
 lsim.kdevses                |  58 +++++++++---------------------------
 src/graphicsellipseitem.cpp |  45 +++++++++++++++++++++++++---
 src/graphicsellipseitem.h   |  11 +++++++
 src/graphicsview.cpp        |   6 ++++
 src/graphicsview.h          |   1 +
 src/lsim.cpp                |  42 ++++++++++++++++++++++----
 src/lsim.h                  |   1 +
 8 files changed, 110 insertions(+), 54 deletions(-)

diff --git a/lsim.kdevelop.pcs b/lsim.kdevelop.pcs
index 322f3a98c7929ef89f25dc5190b9688721377ea0..a4d43f7315b340ac95ce07f1c17edd6364ed3822 100644
GIT binary patch
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diff --git a/lsim.kdevses b/lsim.kdevses
index 6156c28..3745896 100644
--- a/lsim.kdevses
+++ b/lsim.kdevses
@@ -1,61 +1,31 @@
 <?xml version = '1.0' encoding = 'UTF-8'?>
 <!DOCTYPE KDevPrjSession>
 <KDevPrjSession>
- <DocsAndViews NumberOfDocuments="18" >
-  <Doc0 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/simulscene.h" >
-   <View0 Encoding="" line="201" Type="Source" />
+ <DocsAndViews NumberOfDocuments="8" >
+  <Doc0 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsellipseitem.cpp" >
+   <View0 Encoding="" line="185" Type="Source" />
   </Doc0>
   <Doc1 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/simulscene.cpp" >
-   <View0 Encoding="" line="106" Type="Source" />
+   <View0 Encoding="" line="57" Type="Source" />
   </Doc1>
-  <Doc2 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsellipseitem.h" >
-   <View0 Encoding="" line="66" Type="Source" />
+  <Doc2 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/main.cpp" >
+   <View0 Encoding="" line="0" Type="Source" />
   </Doc2>
-  <Doc3 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsellipseitem.cpp" >
-   <View0 Encoding="" line="207" Type="Source" />
+  <Doc3 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsellipseitem.h" >
+   <View0 Encoding="" line="81" Type="Source" />
   </Doc3>
   <Doc4 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/lsim.h" >
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+   <View0 Encoding="" line="124" Type="Source" />
   </Doc4>
   <Doc5 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/lsim.cpp" >
-   <View0 Encoding="" line="293" Type="Source" />
+   <View0 Encoding="" line="105" Type="Source" />
   </Doc5>
-  <Doc6 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/probechargewidget.cpp" >
-   <View0 Encoding="" Type="Source" />
+  <Doc6 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsview.cpp" >
+   <View0 Encoding="" line="105" Type="Source" />
   </Doc6>
-  <Doc7 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/stopperitem.h" >
-   <View0 Encoding="" Type="Source" />
+  <Doc7 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/graphicsview.h" >
+   <View0 Encoding="" line="40" Type="Source" />
   </Doc7>
-  <Doc8 NumberOfViews="1" URL="file:///mnt/sdb1/c%2B%2B/lsim/src/stopperitem.cpp" >
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diff --git a/src/graphicsellipseitem.cpp b/src/graphicsellipseitem.cpp
index 03b3552..d0b0024 100644
--- a/src/graphicsellipseitem.cpp
+++ b/src/graphicsellipseitem.cpp
@@ -29,6 +29,7 @@
 #include <cmath>
 #include "constants.h"
 #include <iostream>
+#include <climits>
 
 GraphicsEllipseItem::GraphicsEllipseItem() {
 	//setFlag(ItemIsMovable);
@@ -51,6 +52,8 @@ void  GraphicsEllipseItem::setupVars () {
 	setStartSpeedX(0);
 	setStartSpeedY(0);
 	setPos(0,0);
+	setAdaptiveStepLength(0.01);
+	setAdaptiveStepControl(true);
 }
 
 void  GraphicsEllipseItem::resetProbe() {
@@ -120,9 +123,15 @@ void GraphicsEllipseItem::calculateProbePath(QPointF startPoint) {
 		double powerX = myScene->getPowerAt(currProbePath->at(i-1), charge, speedListX->at(i-1),speedListY->at(i-1), 'x');
 		double powerY = myScene->getPowerAt(currProbePath->at(i-1), charge, speedListX->at(i-1),speedListY->at(i-1), 'y');
 
-		if (combinedSpeed != 0) timePerStep = 0.008/(combinedSpeed/meterPerPx);
-		if (timePerStep < (1/10.0 * myScene->getTimePerStep())) timePerStep = 1/10.0 * myScene->getTimePerStep();
-		if (timePerStep > (19.0/10.0 * myScene->getTimePerStep())) timePerStep = 19.0/10.0 * myScene->getTimePerStep();
+		//automatische Zeitschrittanpassung 0.008
+		if (isAdaptiveStepControlEnabled()&&combinedSpeed != 0) timePerStep = getAdaptiveStepLength()/(combinedSpeed/meterPerPx);
+		//if (timePerStep < (1/10.0 * myScene->getTimePerStep())) timePerStep = 1/10.0 * myScene->getTimePerStep();
+		//if (timePerStep > (19.0/10.0 * myScene->getTimePerStep())) timePerStep = 19.0/10.0 * myScene->getTimePerStep();
+		double combinedPower = sqrt(powerX*powerX+powerY*powerY);
+		if (isAdaptiveStepControlEnabled() && combinedPower !=0) {
+			timePerStep = fabs((-combinedSpeed + sqrt(combinedSpeed*combinedSpeed + 2*(combinedPower/myMasse)*getAdaptiveStepLength()*meterPerPx)) / (combinedPower/myMasse));
+		}
+
 
 		//qDebug()<<timePerStep;
 
@@ -177,6 +186,10 @@ void GraphicsEllipseItem::calculateProbePath(QPointF startPoint) {
 
 		QPointF newPoint(currProbePath->at(i-1).x() + deltaDistX/meterPerPx ,currProbePath->at(i-1).y() + deltaDistY/meterPerPx);
 
+		//Scrollbar int Probleme vermeiden
+		if (newPoint.x() + 10 > INT_MAX || newPoint.x() - 10 < INT_MIN) break;
+		if (newPoint.y() + 10 > INT_MAX || newPoint.y() - 10 < INT_MIN) break;
+
 		if (myScene->stopsHere(currProbePath->at(i-1),newPoint)) break;
 
 		currProbePath->append(newPoint);
@@ -192,7 +205,7 @@ void GraphicsEllipseItem::calculateProbePath(QPointF startPoint) {
 		if (i%path_entry_step == 0 || i==currProbePath->count()) flightPath.lineTo(currProbePath->at(i));
 	}
 
-	//qDebug()<< "Probe Path: " <<*currProbePath;
+	qDebug()<< "Probe Path: " <<*currProbePath;
 	//qDebug()<< "speed x: "<<*speedListX;
 	//qDebug()<< "speed y: "<<*speedListY;
 	//qDebug()<<speedListY->at(12);
@@ -298,3 +311,27 @@ void GraphicsEllipseItem::setFlightPath ( const QPainterPath& theValue ) {
 
 
 
+
+
+bool GraphicsEllipseItem::isAdaptiveStepControlEnabled() const {
+	return adaptiveStepControlEnabled;
+}
+
+
+void GraphicsEllipseItem::setAdaptiveStepControl ( bool theValue ) {
+	if (adaptiveStepControlEnabled == theValue) return;
+	adaptiveStepControlEnabled = theValue;
+	emit adaptiveStepControlChanged(theValue);
+}
+
+
+double GraphicsEllipseItem::getAdaptiveStepLength() const {
+	return adaptiveStepLength;
+}
+
+
+void GraphicsEllipseItem::setAdaptiveStepLength ( double theValue ) {
+	if (adaptiveStepLength == theValue) return;
+	adaptiveStepLength = theValue;
+	emit adaptiveStepLengthChanged(theValue);
+}
diff --git a/src/graphicsellipseitem.h b/src/graphicsellipseitem.h
index ff35954..11670f4 100644
--- a/src/graphicsellipseitem.h
+++ b/src/graphicsellipseitem.h
@@ -52,6 +52,8 @@ class GraphicsEllipseItem : public QObject , public QGraphicsEllipseItem {
 		
 		QPainterPath getFlightPath() const;
 		double getRealSimulTime() const;
+		bool isAdaptiveStepControlEnabled() const;
+		double getAdaptiveStepLength() const;
 
 
 	protected:
@@ -76,6 +78,10 @@ class GraphicsEllipseItem : public QObject , public QGraphicsEllipseItem {
 		double startSpeedX;
 		///Startgeschwindigkeit des teilchens in y-Richtung
 		double startSpeedY;
+		///automatische Zeitschrittanpassung an/aus
+		bool adaptiveStepControlEnabled;
+		///angenaeherte Schrittlaenge in px
+		double adaptiveStepLength;
 
 		QPointF myScenePos;
 
@@ -103,7 +109,10 @@ class GraphicsEllipseItem : public QObject , public QGraphicsEllipseItem {
 
 		void setFlightPath ( const QPainterPath& theValue );
 		void resetProbe();
+		void setAdaptiveStepControl ( bool theValue );
+		void setAdaptiveStepLength ( double theValue );
 	
+
 	signals:
 		void startSpeedXChanged(double speed);
 		void startSpeedYChanged(double speed);
@@ -112,6 +121,8 @@ class GraphicsEllipseItem : public QObject , public QGraphicsEllipseItem {
 		void ScenePosChanged(QPointF newpos);
 		void ScenePosXChanged(double newX);
 		void ScenePosYChanged(double newY);
+		void adaptiveStepControlChanged(bool truefalse);
+		void adaptiveStepLengthChanged(double length);
 	
 
 		
diff --git a/src/graphicsview.cpp b/src/graphicsview.cpp
index 93c4641..285e8b4 100644
--- a/src/graphicsview.cpp
+++ b/src/graphicsview.cpp
@@ -101,6 +101,12 @@ void GraphicsView::disableOGLViewport() {
 	//setViewport(new QWidget(parentWidget()));
 }
 
+void GraphicsView::centerOnProbe() {
+	SimulScene* simulScene = dynamic_cast<SimulScene*> (scene());
+	if (simulScene == 0) return;
+	centerOn(simulScene->getProbeChargeItem());
+}
+
 
 GraphicsView::~GraphicsView() {
 }
diff --git a/src/graphicsview.h b/src/graphicsview.h
index 7714679..179fa73 100644
--- a/src/graphicsview.h
+++ b/src/graphicsview.h
@@ -38,6 +38,7 @@ class GraphicsView : public QGraphicsView {
 	public slots:
 		void enableOGLViewport();
 		void disableOGLViewport();
+		void centerOnProbe();
 	private:
 		QStatusBar * mainWindowStatusBar;
 	
diff --git a/src/lsim.cpp b/src/lsim.cpp
index 2725852..dd9f8fc 100644
--- a/src/lsim.cpp
+++ b/src/lsim.cpp
@@ -102,14 +102,19 @@ void lsim::createActions() {
 	acts.calculate->setStatusTip (tr ("Flugbahn berechnen"));
 	connect (acts.calculate, SIGNAL (triggered()), this, SLOT (startCalculation()));
 
-	acts.resetAct = new QAction (tr ("reset"), this);
-	acts.resetAct->setStatusTip (tr ("reset"));
+	acts.resetAct = new QAction (tr ("Alles Zur\374cksetzen"), this);
+	acts.resetAct->setStatusTip (tr ("Alle Werte Zur\374cksetzen und alle Felder L\366schen"));
 	connect (acts.resetAct, SIGNAL (triggered()), this, SLOT (resetAll()));
 
 	acts.timerStart = new QAction (tr ("Timer Start"), this);
 	acts.timerStart->setStatusTip (tr ("Timer starten"));
 	connect (acts.timerStart, SIGNAL (triggered()), this, SLOT (startTimer()));
 
+	acts.centerOnProbeAct = new QAction (tr ("Ladungstr\344ger Zentrieren"), this);
+	acts.centerOnProbeAct->setStatusTip (tr ("Den Ladungstr\344ger Zentrieren"));
+	acts.centerOnProbeAct->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_M));
+	connect (acts.centerOnProbeAct, SIGNAL (triggered()), gview, SLOT (centerOnProbe()));
+
 	acts.timerStop = new QAction (tr ("Animation stoppen"), this);
 	acts.timerStop->setStatusTip (tr ("Die Animation stoppen und Ladung an den Anfang zur\374cksetzen"));
 	acts.timerStop->setIcon(QIcon(":icons/media-playback-stop.svg"));
@@ -243,6 +248,8 @@ void lsim::createMenus() {
 
 
 	viewMenu = menuBar()->addMenu(tr("&Ansicht"));
+	viewMenu->addAction(acts.centerOnProbeAct);
+	viewMenu->addSeparator();
 	viewMenu->addAction(acts.editModeAct);
 	viewMenu->addAction(acts.simulationModeAct);
 	viewMenu->addSeparator();
@@ -314,7 +321,7 @@ void lsim::initWindowMode(WindowMode newMode) {
 		fieldItemEditDock->setVisible(true);
 		probeItemDock->setVisible(true);
 		sceneDock->setVisible(true);
-		gview->centerOn(simulscene->getProbeChargeItem());
+		gview->centerOnProbe();
 
 		
 
@@ -330,7 +337,7 @@ void lsim::initWindowMode(WindowMode newMode) {
 		acts.itemEditModeAct->trigger();
 		simulscene->clearSelection();
 		acts.calculate->trigger();
-		gview->centerOn(simulscene->getProbeChargeItem());
+		gview->centerOnProbe();
 
 	}
 
@@ -370,6 +377,24 @@ void lsim::createDocks() {
 	connect(simulscene, SIGNAL(timePerStepChanged(double)),time_step_box, SLOT(setValue( double )));
 
 
+	//automatische Schrittlaengen-box
+	ExpDoubleSpinBox *adaptive_step_length_box = new ExpDoubleSpinBox;
+	adaptive_step_length_box->setRange(pow(10,-100), pow(10,66));
+	adaptive_step_length_box->setDecimals(100);
+	adaptive_step_length_box->setDisplayDecimals(3);
+	adaptive_step_length_box->setSuffix(" px");
+	adaptive_step_length_box->setKeyboardTracking(false);
+	adaptive_step_length_box->setValue(simulscene->getProbeChargeItem()->getAdaptiveStepLength());
+	connect(adaptive_step_length_box, SIGNAL(valueChanged(double)),simulscene->getProbeChargeItem(), SLOT(setAdaptiveStepLength(double)));
+	connect(simulscene->getProbeChargeItem(), SIGNAL(adaptiveStepLengthChanged(double)),adaptive_step_length_box, SLOT(setValue( double )));
+
+	//automatische schrittanpassungsbox
+	QCheckBox *adaptive_time_step_box = new QCheckBox("");
+	adaptive_time_step_box->setChecked(simulscene->getProbeChargeItem()->isAdaptiveStepControlEnabled());
+	connect(adaptive_time_step_box, SIGNAL(toggled(bool)),simulscene->getProbeChargeItem(), SLOT(setAdaptiveStepControl(bool)));
+	connect(simulscene->getProbeChargeItem(), SIGNAL(adaptiveStepControlChanged(bool)),adaptive_time_step_box, SLOT(setChecked(bool)));
+	connect(adaptive_time_step_box, SIGNAL(toggled(bool)),adaptive_step_length_box, SLOT(setEnabled(bool)));
+
 	//meterPerPixel Box
 	ExpDoubleSpinBox *meter_per_px_box = new ExpDoubleSpinBox;
 	meter_per_px_box->setRange(pow(10,-100), pow(10,66));
@@ -385,6 +410,7 @@ void lsim::createDocks() {
 	QLabel *time_per_step_label = new QLabel(tr("Zeit pro Schritt:"));
 	QLabel *steps_label = new QLabel(tr("Schritte:"));
 	QLabel *meter_per_pixel_label = new QLabel(tr("Ein Pixel entspricht:"));
+	QLabel *adaptive_time_step_label = new QLabel(tr("Automatische Schrittl\344nge:"));
 
 	//Scene settings Layout
 	QGridLayout *sceneGridLayout = new QGridLayout;
@@ -392,8 +418,12 @@ void lsim::createDocks() {
 	sceneGridLayout->addWidget(steps_box,0,1);
 	sceneGridLayout->addWidget(time_per_step_label,1,0,Qt::AlignRight);
 	sceneGridLayout->addWidget(time_step_box,1,1);
-	sceneGridLayout->addWidget(meter_per_pixel_label,2,0,Qt::AlignRight);
-	sceneGridLayout->addWidget(meter_per_px_box,2,1);
+	sceneGridLayout->addWidget(adaptive_time_step_label,2,0,Qt::AlignRight);
+	sceneGridLayout->addWidget(adaptive_time_step_box,2,1);
+	sceneGridLayout->addWidget(adaptive_step_length_box,3,1);
+	sceneGridLayout->addWidget(meter_per_pixel_label,4,0,Qt::AlignRight);
+	sceneGridLayout->addWidget(meter_per_px_box,4,1);
+
 
 
 	QGroupBox *sceneGroupBox = new QGroupBox(tr("Allgemeines"));
diff --git a/src/lsim.h b/src/lsim.h
index 18958f2..d9966b1 100644
--- a/src/lsim.h
+++ b/src/lsim.h
@@ -122,6 +122,7 @@ class lsim: public QMainWindow {
 
 			QAction *resetAct;
 			QAction *fullScreenAct;
+			QAction *centerOnProbeAct;
 		};
 		Actions acts;