[occt.git] / samples / qt / FuncDemo / src / graphwidget.cpp

/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "graphwidget.h"
#include "edge.h"
#include "node.h"

#include <QDebug>
#include <QGraphicsScene>
#include <QWheelEvent>
#include <QApplication>

#include <math.h>

#include <TFunction_Iterator.hxx>
#include <TFunction_IFunction.hxx>
#include <TFunction_GraphNode.hxx>
#include <TFunction_Scope.hxx>
#include <TFunction_DriverTable.hxx>
#include <TFunction_Driver.hxx>
#include <TFunction_Function.hxx>

#include <TDataStd_Name.hxx>
#include <TDF_ChildIterator.hxx>
#include <TDF_ListIteratorOfLabelList.hxx>
#include <TColStd_MapIteratorOfMapOfInteger.hxx>

#include "SimpleDriver.h"
#include "PointDriver.h"
#include "CircleDriver.h"
#include "PrismDriver.h"
#include "ConeDriver.h"
#include "CylinderDriver.h"
#include "ShapeSaverDriver.h"
#include "SimpleDriver.h"

GraphWidget::GraphWidget(QWidget* parent):QGraphicsView(parent),
    myThread1(0),myThread2(0),myThread3(0),myThread4(0)
{
    QGraphicsScene *scene = new QGraphicsScene(this);
    scene->setItemIndexMethod(QGraphicsScene::NoIndex);
    scene->setSceneRect(1, 1, parent->width(), parent->height());
    setScene(scene);
    setCacheMode(CacheBackground);
    setRenderHint(QPainter::Antialiasing);
    setTransformationAnchor(AnchorUnderMouse);
    setResizeAnchor(AnchorViewCenter);

    scale(0.7, 0.81);
    setMinimumSize(400, 400);
    setWindowTitle(tr("Function Mechanism"));

    setNbThreads(1);
}

GraphWidget::~GraphWidget()
{
    if (myThread1)
    {
        myThread1->wait();
        myThread1->deleteLater();
    }
    if (myThread2)
    {
        myThread2->wait();
        myThread2->deleteLater();
    }
    if (myThread3)
    {
        myThread3->wait();
        myThread3->deleteLater();
    }
    if (myThread4)
    {
        myThread4->wait();
        myThread4->deleteLater();
    }
}

bool GraphWidget::createModel(const Handle(TDocStd_Document)& doc)
{
    myDocument = doc;
    
    TFunction_Iterator fIterator(myDocument->Main());
    fIterator.SetUsageOfExecutionStatus(false);
    Handle(TFunction_Scope) scope = TFunction_Scope::Set(myDocument->Main());

    // Find out the size of the grid: number of functions in X and Y directions
    int nbx = 0, nby = 0;
    while (!fIterator.Current().IsEmpty())
    {
        const TDF_LabelList& funcs = fIterator.Current();
        if (funcs.Extent() > nbx)
            nbx = funcs.Extent();
        nby++;
        fIterator.Next();
    }
    if (!nbx || !nby)
        return false;

    // Grid of functions
    int dx = width() / nbx, dy = height() / nby;
    int x0 = dx / 2, y0 = dy / 2; // start position

    // Draw functions
    double x = x0, y = y0;
    fIterator.Init(myDocument->Main());
    while (!fIterator.Current().IsEmpty())
    {
        const TDF_LabelList& funcs = fIterator.Current();
        TDF_ListIteratorOfLabelList itrl(funcs);
        for (; itrl.More(); itrl.Next())
        {
            TDF_Label L = itrl.Value();
            Node *node = new Node(this);
            node->setFunction(L);
            scene()->addItem(node);
            node->setPos(x, y);
            x += dx;
            if (x > width())
                x = x0;
        }
        y += dy;
        if (y > height())
            y = y0;
        fIterator.Next();
    }

    // Draw dependencies
    fIterator.Init(myDocument->Main());
    while (!fIterator.Current().IsEmpty())
    {
        const TDF_LabelList& funcs = fIterator.Current();
        TDF_ListIteratorOfLabelList itrl(funcs);
        for (; itrl.More(); itrl.Next())
        {
            TDF_Label L = itrl.Value();
            Node* node = findNode(L);
            if (!node)
                continue;

            // Find backward dependencies of the function
            TFunction_IFunction iFunc(L);
            Handle(TFunction_GraphNode) graphNode = iFunc.GetGraphNode();
            const TColStd_MapOfInteger& prev = graphNode->GetPrevious();
            TColStd_MapIteratorOfMapOfInteger itrm(prev);
            for (; itrm.More(); itrm.Next())
            {
                const int argID = itrm.Key();
                const TDF_Label& argL = scope->GetFunction(argID);
                Node* n = findNode(argL);
                if (!n)
                    continue;
                scene()->addItem(new Edge(n, node));
            }
        }
        fIterator.Next();
    }

    return !myDocument.IsNull();
}

void GraphWidget::wheelEvent(QWheelEvent *event)
{
    scaleView(pow((double)2, -event->delta() / 240.0));
}

void GraphWidget::drawBackground(QPainter *painter, const QRectF &rect)
{
    Q_UNUSED(rect);

    // Shadow
    QRectF sceneRect = this->sceneRect();
    QRectF rightShadow(sceneRect.right(), sceneRect.top() + 5, 5, sceneRect.height());
    QRectF bottomShadow(sceneRect.left() + 5, sceneRect.bottom(), sceneRect.width(), 5);
    if (rightShadow.intersects(rect) || rightShadow.contains(rect))
	painter->fillRect(rightShadow, Qt::darkGray);
    if (bottomShadow.intersects(rect) || bottomShadow.contains(rect))
	painter->fillRect(bottomShadow, Qt::darkGray);

    // Fill
    QLinearGradient gradient(sceneRect.topLeft(), sceneRect.bottomRight());
    gradient.setColorAt(0, Qt::white);
    gradient.setColorAt(1, Qt::lightGray);
    painter->fillRect(rect.intersected(sceneRect), gradient);
    painter->setBrush(Qt::NoBrush);
    painter->drawRect(sceneRect);
}

void GraphWidget::scaleView(qreal scaleFactor)
{
    qreal factor = matrix().scale(scaleFactor, scaleFactor).mapRect(QRectF(0, 0, 1, 1)).width();
    if (factor < 0.07 || factor > 100)
        return;

    scale(scaleFactor, scaleFactor);
}

// Find node of the function
Node* GraphWidget::findNode(const TDF_Label& L)
{
    Node* node = 0;
    for (int i = 0; i < scene()->items().size(); i++)
    {
        Node* n = qgraphicsitem_cast<Node *>(scene()->items().at(i));
        if (n && n->getFunction() == L)
        {
            node = n;
            break;
        }
    }
    return node;
}

void GraphWidget::compute()
{
    myNbFinishedThreads = 0;

    TFunction_Iterator fIterator(myDocument->Main());
    fIterator.SetUsageOfExecutionStatus(true);

    myThread1 = new FThread();
    if (myNbThreads > 1)
        myThread2 = new FThread();
    if (myNbThreads > 2)
        myThread3 = new FThread();
    if (myNbThreads > 3)
        myThread4 = new FThread();

    // Logbook
    Handle(TFunction_Logbook) log = TFunction_Scope::Set(myDocument->Main())->GetLogbook();
    myThread1->setLogbook(log);
    if (myNbThreads > 1)
        myThread2->setLogbook(log);
    if (myNbThreads > 2)
        myThread3->setLogbook(log);
    if (myNbThreads > 3)
        myThread4->setLogbook(log);

    myThread1->setIterator(fIterator);
    if (myNbThreads > 1)
        myThread2->setIterator(fIterator);
    if (myNbThreads > 2)
        myThread3->setIterator(fIterator);
    if (myNbThreads > 3)
        myThread4->setIterator(fIterator);

    myThread1->setGraph(this);
    if (myNbThreads > 1)
        myThread2->setGraph(this);
    if (myNbThreads > 2)
        myThread3->setGraph(this);
    if (myNbThreads > 3)
        myThread4->setGraph(this);

    myThread1->setThreadIndex(1);
    if (myNbThreads > 1)
        myThread2->setThreadIndex(2);
    if (myNbThreads > 2)
        myThread3->setThreadIndex(3);
    if (myNbThreads > 3)
        myThread4->setThreadIndex(4);

    QThread::Priority priority = QThread::LowestPriority;
    if (!myThread1->isRunning())
        myThread1->start(priority);
    if (myNbThreads > 1 && !myThread2->isRunning())
        myThread2->start(priority);
    if (myNbThreads > 2 && !myThread3->isRunning())
        myThread3->start(priority);
    if (myNbThreads > 3 && !myThread4->isRunning())
        myThread4->start(priority);
}

void GraphWidget::setNbThreads(const int nb)
{
    myNbThreads = nb;
    if (myNbThreads < 4 && myThread4)
    {
        myThread4->wait();
        myThread4->deleteLater();
        myThread4 = 0;
    }
    if (myNbThreads < 3 && myThread3)
    {
        myThread3->wait();
        myThread3->deleteLater();
        myThread3 = 0;
    }
    if (myNbThreads < 2 && myThread2)
    {
        myThread2->wait();
        myThread2->deleteLater();
        myThread2 = 0;
    }

    for (int i = 1; i <= myNbThreads; i++)
    {
        TFunction_DriverTable::Get()->AddDriver(PointDriver::GetID(), new PointDriver(), i);
        TFunction_DriverTable::Get()->AddDriver(CircleDriver::GetID(), new CircleDriver(), i);
        TFunction_DriverTable::Get()->AddDriver(PrismDriver::GetID(), new PrismDriver(), i);
        TFunction_DriverTable::Get()->AddDriver(ConeDriver::GetID(), new ConeDriver(), i);
        TFunction_DriverTable::Get()->AddDriver(CylinderDriver::GetID(), new CylinderDriver(), i);
        TFunction_DriverTable::Get()->AddDriver(ShapeSaverDriver::GetID(), new ShapeSaverDriver(), i);
        TFunction_DriverTable::Get()->AddDriver(SimpleDriver::GetID(), new SimpleDriver(), i);
    }
}

int GraphWidget::getNbThreads()
{
    return myNbThreads;
}

void GraphWidget::setFinished()
{
    myNbFinishedThreads++;
}

bool GraphWidget::isFinished()
{
    return myNbThreads == myNbFinishedThreads ;
}

void GraphWidget::accelerateThread(const int thread_index)
{
    bool all_slow = true;
    if (myThread1 && myThread1->priority() != QThread::LowPriority)
        all_slow = false;
    if (all_slow && myThread2 && myThread2->priority() != QThread::LowPriority)
        all_slow = false;
    if (all_slow && myThread3 && myThread3->priority() != QThread::LowPriority)
        all_slow = false;
    if (all_slow && myThread4 && myThread4->priority() != QThread::LowPriority)
        all_slow = false;
    if (!all_slow)
        return;

    QThread::Priority priority = QThread::NormalPriority;
    switch (thread_index)
    {
    case 1:
        myThread1->setPriority(priority);
        break;
    case 2:
        myThread2->setPriority(priority);
        break;
    case 3:
        myThread3->setPriority(priority);
        break;
    case 4:
        myThread4->setPriority(priority);
        break;
    }
}

void GraphWidget::slowDownThread(const int thread_index)
{
    QThread::Priority priority = QThread::LowPriority;
    switch (thread_index)
    {
    case 1:
        myThread1->setPriority(priority);
        break;
    case 2:
        myThread2->setPriority(priority);
        break;
    case 3:
        myThread3->setPriority(priority);
        break;
    case 4:
        myThread4->setPriority(priority);
        break;
    }
}
Commit	Line	Data
	1	/****************************************************************************
	2	**
	3	** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
	4	** Contact: http://www.qt-project.org/legal
	5	**
	6	** This file is part of the examples of the Qt Toolkit.
	7	**
	8	** $QT_BEGIN_LICENSE:BSD$
	9	** You may use this file under the terms of the BSD license as follows:
	10	**
	11	** "Redistribution and use in source and binary forms, with or without
	12	** modification, are permitted provided that the following conditions are
	13	** met:
	14	** * Redistributions of source code must retain the above copyright
	15	** notice, this list of conditions and the following disclaimer.
	16	** * Redistributions in binary form must reproduce the above copyright
	17	** notice, this list of conditions and the following disclaimer in
	18	** the documentation and/or other materials provided with the
	19	** distribution.
	20	** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
	21	** of its contributors may be used to endorse or promote products derived
	22	** from this software without specific prior written permission.
	23	**
	24	**
	25	** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	26	** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	27	** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	28	** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	29	** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	30	** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	31	** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	32	** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	33	** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	34	** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	35	** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
	36	**
	37	** $QT_END_LICENSE$
	38	**
	39	****************************************************************************/
	40
	41	#include "graphwidget.h"
	42	#include "edge.h"
	43	#include "node.h"
	44
	45	#include <QDebug>
	46	#include <QGraphicsScene>
	47	#include <QWheelEvent>
	48	#include <QApplication>
	49
	50	#include <math.h>
	51
	52	#include <TFunction_Iterator.hxx>
	53	#include <TFunction_IFunction.hxx>
	54	#include <TFunction_GraphNode.hxx>
	55	#include <TFunction_Scope.hxx>
	56	#include <TFunction_DriverTable.hxx>
	57	#include <TFunction_Driver.hxx>
	58	#include <TFunction_Function.hxx>
	59
	60	#include <TDataStd_Name.hxx>
	61	#include <TDF_ChildIterator.hxx>
	62	#include <TDF_ListIteratorOfLabelList.hxx>
	63	#include <TColStd_MapIteratorOfMapOfInteger.hxx>
	64
	65	#include "SimpleDriver.h"
	66	#include "PointDriver.h"
	67	#include "CircleDriver.h"
	68	#include "PrismDriver.h"
	69	#include "ConeDriver.h"
	70	#include "CylinderDriver.h"
	71	#include "ShapeSaverDriver.h"
	72	#include "SimpleDriver.h"
	73
	74	GraphWidget::GraphWidget(QWidget* parent):QGraphicsView(parent),
	75	myThread1(0),myThread2(0),myThread3(0),myThread4(0)
	76	{
	77	QGraphicsScene *scene = new QGraphicsScene(this);
	78	scene->setItemIndexMethod(QGraphicsScene::NoIndex);
	79	scene->setSceneRect(1, 1, parent->width(), parent->height());
	80	setScene(scene);
	81	setCacheMode(CacheBackground);
	82	setRenderHint(QPainter::Antialiasing);
	83	setTransformationAnchor(AnchorUnderMouse);
	84	setResizeAnchor(AnchorViewCenter);
	85
	86	scale(0.7, 0.81);
	87	setMinimumSize(400, 400);
	88	setWindowTitle(tr("Function Mechanism"));
	89
	90	setNbThreads(1);
	91	}
	92
	93	GraphWidget::~GraphWidget()
	94	{
	95	if (myThread1)
	96	{
	97	myThread1->wait();
	98	myThread1->deleteLater();
	99	}
	100	if (myThread2)
	101	{
	102	myThread2->wait();
	103	myThread2->deleteLater();
	104	}
	105	if (myThread3)
	106	{
	107	myThread3->wait();
	108	myThread3->deleteLater();
	109	}
	110	if (myThread4)
	111	{
	112	myThread4->wait();
	113	myThread4->deleteLater();
	114	}
	115	}
	116
	117	bool GraphWidget::createModel(const Handle(TDocStd_Document)& doc)
	118	{
	119	myDocument = doc;
	120
	121	TFunction_Iterator fIterator(myDocument->Main());
	122	fIterator.SetUsageOfExecutionStatus(false);
	123	Handle(TFunction_Scope) scope = TFunction_Scope::Set(myDocument->Main());
	124
	125	// Find out the size of the grid: number of functions in X and Y directions
	126	int nbx = 0, nby = 0;
	127	while (!fIterator.Current().IsEmpty())
	128	{
	129	const TDF_LabelList& funcs = fIterator.Current();
	130	if (funcs.Extent() > nbx)
	131	nbx = funcs.Extent();
	132	nby++;
	133	fIterator.Next();
	134	}
	135	if (!nbx \|\| !nby)
	136	return false;
	137
	138	// Grid of functions
	139	int dx = width() / nbx, dy = height() / nby;
	140	int x0 = dx / 2, y0 = dy / 2; // start position
	141
	142	// Draw functions
	143	double x = x0, y = y0;
	144	fIterator.Init(myDocument->Main());
	145	while (!fIterator.Current().IsEmpty())
	146	{
	147	const TDF_LabelList& funcs = fIterator.Current();
	148	TDF_ListIteratorOfLabelList itrl(funcs);
	149	for (; itrl.More(); itrl.Next())
	150	{
	151	TDF_Label L = itrl.Value();
	152	Node *node = new Node(this);
	153	node->setFunction(L);
	154	scene()->addItem(node);
	155	node->setPos(x, y);
	156	x += dx;
	157	if (x > width())
	158	x = x0;
	159	}
	160	y += dy;
	161	if (y > height())
	162	y = y0;
	163	fIterator.Next();
	164	}
	165
	166	// Draw dependencies
	167	fIterator.Init(myDocument->Main());
	168	while (!fIterator.Current().IsEmpty())
	169	{
	170	const TDF_LabelList& funcs = fIterator.Current();
	171	TDF_ListIteratorOfLabelList itrl(funcs);
	172	for (; itrl.More(); itrl.Next())
	173	{
	174	TDF_Label L = itrl.Value();
	175	Node* node = findNode(L);
	176	if (!node)
	177	continue;
	178
	179	// Find backward dependencies of the function
	180	TFunction_IFunction iFunc(L);
	181	Handle(TFunction_GraphNode) graphNode = iFunc.GetGraphNode();
	182	const TColStd_MapOfInteger& prev = graphNode->GetPrevious();
	183	TColStd_MapIteratorOfMapOfInteger itrm(prev);
	184	for (; itrm.More(); itrm.Next())
	185	{
	186	const int argID = itrm.Key();
	187	const TDF_Label& argL = scope->GetFunction(argID);
	188	Node* n = findNode(argL);
	189	if (!n)
	190	continue;
	191	scene()->addItem(new Edge(n, node));
	192	}
	193	}
	194	fIterator.Next();
	195	}
	196
	197	return !myDocument.IsNull();
	198	}
	199
	200	void GraphWidget::wheelEvent(QWheelEvent *event)
	201	{
	202	scaleView(pow((double)2, -event->delta() / 240.0));
	203	}
	204
	205	void GraphWidget::drawBackground(QPainter *painter, const QRectF &rect)
	206	{
	207	Q_UNUSED(rect);
	208
	209	// Shadow
	210	QRectF sceneRect = this->sceneRect();
	211	QRectF rightShadow(sceneRect.right(), sceneRect.top() + 5, 5, sceneRect.height());
	212	QRectF bottomShadow(sceneRect.left() + 5, sceneRect.bottom(), sceneRect.width(), 5);
	213	if (rightShadow.intersects(rect) \|\| rightShadow.contains(rect))
	214	painter->fillRect(rightShadow, Qt::darkGray);
	215	if (bottomShadow.intersects(rect) \|\| bottomShadow.contains(rect))
	216	painter->fillRect(bottomShadow, Qt::darkGray);
	217
	218	// Fill
	219	QLinearGradient gradient(sceneRect.topLeft(), sceneRect.bottomRight());
	220	gradient.setColorAt(0, Qt::white);
	221	gradient.setColorAt(1, Qt::lightGray);
	222	painter->fillRect(rect.intersected(sceneRect), gradient);
	223	painter->setBrush(Qt::NoBrush);
	224	painter->drawRect(sceneRect);
	225	}
	226
	227	void GraphWidget::scaleView(qreal scaleFactor)
	228	{
	229	qreal factor = matrix().scale(scaleFactor, scaleFactor).mapRect(QRectF(0, 0, 1, 1)).width();
	230	if (factor < 0.07 \|\| factor > 100)
	231	return;
	232
	233	scale(scaleFactor, scaleFactor);
	234	}
	235
	236	// Find node of the function
	237	Node* GraphWidget::findNode(const TDF_Label& L)
	238	{
	239	Node* node = 0;
	240	for (int i = 0; i < scene()->items().size(); i++)
	241	{
	242	Node* n = qgraphicsitem_cast<Node *>(scene()->items().at(i));
	243	if (n && n->getFunction() == L)
	244	{
	245	node = n;
	246	break;
	247	}
	248	}
	249	return node;
	250	}
	251
	252	void GraphWidget::compute()
	253	{
	254	myNbFinishedThreads = 0;
	255
	256	TFunction_Iterator fIterator(myDocument->Main());
	257	fIterator.SetUsageOfExecutionStatus(true);
	258
	259	myThread1 = new FThread();
	260	if (myNbThreads > 1)
	261	myThread2 = new FThread();
	262	if (myNbThreads > 2)
	263	myThread3 = new FThread();
	264	if (myNbThreads > 3)
	265	myThread4 = new FThread();
	266
	267	// Logbook
	268	Handle(TFunction_Logbook) log = TFunction_Scope::Set(myDocument->Main())->GetLogbook();
	269	myThread1->setLogbook(log);
	270	if (myNbThreads > 1)
	271	myThread2->setLogbook(log);
	272	if (myNbThreads > 2)
	273	myThread3->setLogbook(log);
	274	if (myNbThreads > 3)
	275	myThread4->setLogbook(log);
	276
	277	myThread1->setIterator(fIterator);
	278	if (myNbThreads > 1)
	279	myThread2->setIterator(fIterator);
	280	if (myNbThreads > 2)
	281	myThread3->setIterator(fIterator);
	282	if (myNbThreads > 3)
	283	myThread4->setIterator(fIterator);
	284
	285	myThread1->setGraph(this);
	286	if (myNbThreads > 1)
	287	myThread2->setGraph(this);
	288	if (myNbThreads > 2)
	289	myThread3->setGraph(this);
	290	if (myNbThreads > 3)
	291	myThread4->setGraph(this);
	292
	293	myThread1->setThreadIndex(1);
	294	if (myNbThreads > 1)
	295	myThread2->setThreadIndex(2);
	296	if (myNbThreads > 2)
	297	myThread3->setThreadIndex(3);
	298	if (myNbThreads > 3)
	299	myThread4->setThreadIndex(4);
	300
	301	QThread::Priority priority = QThread::LowestPriority;
	302	if (!myThread1->isRunning())
	303	myThread1->start(priority);
	304	if (myNbThreads > 1 && !myThread2->isRunning())
	305	myThread2->start(priority);
	306	if (myNbThreads > 2 && !myThread3->isRunning())
	307	myThread3->start(priority);
	308	if (myNbThreads > 3 && !myThread4->isRunning())
	309	myThread4->start(priority);
	310	}
	311
	312	void GraphWidget::setNbThreads(const int nb)
	313	{
	314	myNbThreads = nb;
	315	if (myNbThreads < 4 && myThread4)
	316	{
	317	myThread4->wait();
	318	myThread4->deleteLater();
	319	myThread4 = 0;
	320	}
	321	if (myNbThreads < 3 && myThread3)
	322	{
	323	myThread3->wait();
	324	myThread3->deleteLater();
	325	myThread3 = 0;
	326	}
	327	if (myNbThreads < 2 && myThread2)
	328	{
	329	myThread2->wait();
	330	myThread2->deleteLater();
	331	myThread2 = 0;
	332	}
	333
	334	for (int i = 1; i <= myNbThreads; i++)
	335	{
	336	TFunction_DriverTable::Get()->AddDriver(PointDriver::GetID(), new PointDriver(), i);
	337	TFunction_DriverTable::Get()->AddDriver(CircleDriver::GetID(), new CircleDriver(), i);
	338	TFunction_DriverTable::Get()->AddDriver(PrismDriver::GetID(), new PrismDriver(), i);
	339	TFunction_DriverTable::Get()->AddDriver(ConeDriver::GetID(), new ConeDriver(), i);
	340	TFunction_DriverTable::Get()->AddDriver(CylinderDriver::GetID(), new CylinderDriver(), i);
	341	TFunction_DriverTable::Get()->AddDriver(ShapeSaverDriver::GetID(), new ShapeSaverDriver(), i);
	342	TFunction_DriverTable::Get()->AddDriver(SimpleDriver::GetID(), new SimpleDriver(), i);
	343	}
	344	}
	345
	346	int GraphWidget::getNbThreads()
	347	{
	348	return myNbThreads;
	349	}
	350
	351	void GraphWidget::setFinished()
	352	{
	353	myNbFinishedThreads++;
	354	}
	355
	356	bool GraphWidget::isFinished()
	357	{
	358	return myNbThreads == myNbFinishedThreads ;
	359	}
	360
	361	void GraphWidget::accelerateThread(const int thread_index)
	362	{
	363	bool all_slow = true;
	364	if (myThread1 && myThread1->priority() != QThread::LowPriority)
	365	all_slow = false;
	366	if (all_slow && myThread2 && myThread2->priority() != QThread::LowPriority)
	367	all_slow = false;
	368	if (all_slow && myThread3 && myThread3->priority() != QThread::LowPriority)
	369	all_slow = false;
	370	if (all_slow && myThread4 && myThread4->priority() != QThread::LowPriority)
	371	all_slow = false;
	372	if (!all_slow)
	373	return;
	374
	375	QThread::Priority priority = QThread::NormalPriority;
	376	switch (thread_index)
	377	{
	378	case 1:
	379	myThread1->setPriority(priority);
	380	break;
	381	case 2:
	382	myThread2->setPriority(priority);
	383	break;
	384	case 3:
	385	myThread3->setPriority(priority);
	386	break;
	387	case 4:
	388	myThread4->setPriority(priority);
	389	break;
	390	}
	391	}
	392
	393	void GraphWidget::slowDownThread(const int thread_index)
	394	{
	395	QThread::Priority priority = QThread::LowPriority;
	396	switch (thread_index)
	397	{
	398	case 1:
	399	myThread1->setPriority(priority);
	400	break;
	401	case 2:
	402	myThread2->setPriority(priority);
	403	break;
	404	case 3:
	405	myThread3->setPriority(priority);
	406	break;
	407	case 4:
	408	myThread4->setPriority(priority);
	409	break;
	410	}
	411	}