mirror of
https://github.com/RetroShare/RetroShare.git
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fixed force calculation in elastic model. Still need to figure out what connexions we show
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@3690 b45a01b8-16f6-495d-af2f-9b41ad6348cc
This commit is contained in:
csoler
parent
b7b8cfe860
commit
c4b5f41446
9 changed files with 941 additions and 1014 deletions
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@ -1,210 +1,207 @@
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/****************************************************************************
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**
|
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** Copyright (C) 2006-2007 Trolltech ASA. All rights reserved.
|
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
|
||||
** Contact: Qt Software Information (qt-info@nokia.com)
|
||||
**
|
||||
** This file is part of the example classes of the Qt Toolkit.
|
||||
**
|
||||
** This file may be used under the terms of the GNU General Public
|
||||
** License version 2.0 as published by the Free Software Foundation
|
||||
** and appearing in the file LICENSE.GPL included in the packaging of
|
||||
** this file. Please review the following information to ensure GNU
|
||||
** General Public Licensing requirements will be met:
|
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** http://trolltech.com/products/qt/licenses/licensing/opensource/
|
||||
** $QT_BEGIN_LICENSE:LGPL$
|
||||
** Commercial Usage
|
||||
** Licensees holding valid Qt Commercial licenses may use this file in
|
||||
** accordance with the Qt Commercial License Agreement provided with the
|
||||
** Software or, alternatively, in accordance with the terms contained in
|
||||
** a written agreement between you and Nokia.
|
||||
**
|
||||
** GNU Lesser General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU Lesser
|
||||
** General Public License version 2.1 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.LGPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU Lesser General Public License version 2.1 requirements
|
||||
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
||||
**
|
||||
** In addition, as a special exception, Nokia gives you certain
|
||||
** additional rights. These rights are described in the Nokia Qt LGPL
|
||||
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
|
||||
** package.
|
||||
**
|
||||
** GNU General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU
|
||||
** General Public License version 3.0 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.GPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU General Public License version 3.0 requirements will be
|
||||
** met: http://www.gnu.org/copyleft/gpl.html.
|
||||
**
|
||||
** If you are unsure which license is appropriate for your use, please
|
||||
** review the following information:
|
||||
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
|
||||
** or contact the sales department at sales@trolltech.com.
|
||||
**
|
||||
** In addition, as a special exception, Trolltech gives you certain
|
||||
** additional rights. These rights are described in the Trolltech GPL
|
||||
** Exception version 1.0, which can be found at
|
||||
** http://www.trolltech.com/products/qt/gplexception/ and in the file
|
||||
** GPL_EXCEPTION.txt in this package.
|
||||
**
|
||||
** In addition, as a special exception, Trolltech, as the sole copyright
|
||||
** holder for Qt Designer, grants users of the Qt/Eclipse Integration
|
||||
** plug-in the right for the Qt/Eclipse Integration to link to
|
||||
** functionality provided by Qt Designer and its related libraries.
|
||||
**
|
||||
** Trolltech reserves all rights not expressly granted herein.
|
||||
**
|
||||
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
|
||||
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
||||
** contact the sales department at qt-sales@nokia.com.
|
||||
** $QT_END_LICENSE$
|
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**
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||||
****************************************************************************/
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#include "graphwidget.h"
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#include "edge.h"
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#include "arrow.h"
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#include "node.h"
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#include <retroshare/rspeers.h>
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#include <iostream>
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#include <QDebug>
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#include <QGraphicsScene>
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#include <QWheelEvent>
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#include <math.h>
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GraphWidget::GraphWidget(QWidget *parent)
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:QGraphicsView(parent), timerId(0)
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{
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#define SWAP(a,b) tempr=(a);(a)=(b);(b)=tempr
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#if 0
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void fourn(double data[],unsigned long nn[],unsigned long ndim,int isign)
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{
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int i1,i2,i3,i2rev,i3rev,ip1,ip2,ip3,ifp1,ifp2;
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int ibit,idim,k1,k2,n,nprev,nrem,ntot;
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double tempi,tempr;
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double theta,wi,wpi,wpr,wr,wtemp;
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ntot=1;
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for (idim=1;idim<=ndim;idim++)
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ntot *= nn[idim];
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nprev=1;
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for (idim=ndim;idim>=1;idim--) {
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n=nn[idim];
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nrem=ntot/(n*nprev);
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ip1=nprev << 1;
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ip2=ip1*n;
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ip3=ip2*nrem;
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i2rev=1;
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for (i2=1;i2<=ip2;i2+=ip1) {
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if (i2 < i2rev) {
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for (i1=i2;i1<=i2+ip1-2;i1+=2) {
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for (i3=i1;i3<=ip3;i3+=ip2) {
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i3rev=i2rev+i3-i2;
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SWAP(data[i3],data[i3rev]);
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SWAP(data[i3+1],data[i3rev+1]);
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}
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}
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}
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ibit=ip2 >> 1;
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while (ibit >= ip1 && i2rev > ibit) {
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i2rev -= ibit;
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ibit >>= 1;
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}
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i2rev += ibit;
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}
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ifp1=ip1;
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while (ifp1 < ip2) {
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ifp2=ifp1 << 1;
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theta=isign*6.28318530717959/(ifp2/ip1);
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wtemp=sin(0.5*theta);
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wpr = -2.0*wtemp*wtemp;
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wpi=sin(theta);
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wr=1.0;
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wi=0.0;
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for (i3=1;i3<=ifp1;i3+=ip1) {
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for (i1=i3;i1<=i3+ip1-2;i1+=2) {
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for (i2=i1;i2<=ip3;i2+=ifp2) {
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k1=i2;
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k2=k1+ifp1;
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tempr=wr*data[k2]-wi*data[k2+1];
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tempi=wr*data[k2+1]+wi*data[k2];
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data[k2]=data[k1]-tempr;
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data[k2+1]=data[k1+1]-tempi;
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data[k1] += tempr;
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data[k1+1] += tempi;
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}
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}
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wr=(wtemp=wr)*wpr-wi*wpi+wr;
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wi=wi*wpr+wtemp*wpi+wi;
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}
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ifp1=ifp2;
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}
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nprev *= n;
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}
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}
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#undef SWAP
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GraphWidget::GraphWidget(QWidget *)
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: timerId(0)
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{
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QGraphicsScene *scene = new QGraphicsScene(this);
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scene->setItemIndexMethod(QGraphicsScene::NoIndex);
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//scene->setSceneRect(-200, -200, 400, 400);
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scene->setSceneRect(-200, -200, 1000, 1000);
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setScene(scene);
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centerNode = new Node(this, 1, "You");
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scene->addItem(centerNode);
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centerNode->setPos(0, 0);
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#endif
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centerNode = NULL;
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setCacheMode(CacheBackground);
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setViewportUpdateMode(BoundingRectViewportUpdate);
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setRenderHint(QPainter::Antialiasing);
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setTransformationAnchor(AnchorUnderMouse);
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setResizeAnchor(AnchorViewCenter);
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scale(0.8, 0.8);
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//setMinimumSize(400, 400);
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//setMinimumSize(1000, 1000);
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scale(qreal(0.8), qreal(0.8));
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setMinimumSize(400, 400);
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setWindowTitle(tr("Elastic Nodes"));
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clearGraph();
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}
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bool GraphWidget::clearGraph()
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void GraphWidget::clearGraph()
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{
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QGraphicsScene *oldscene = scene();
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QGraphicsScene *oldscene = scene();
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QGraphicsScene *scene = new QGraphicsScene(this);
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scene->setItemIndexMethod(QGraphicsScene::NoIndex);
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//scene->setSceneRect(-200, -200, 400, 400);
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scene->setSceneRect(-200, -200, 1000, 1000);
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setScene(scene);
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QGraphicsScene *scene = new QGraphicsScene(this);
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scene->setItemIndexMethod(QGraphicsScene::NoIndex);
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scene->setSceneRect(-200, -200, 1000, 1000);
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setScene(scene);
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centerNode = new Node(this, 1, rsPeers->getGPGOwnId(), "You");
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scene->addItem(centerNode);
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centerNode->setPos(0, 0);
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// scene->addItem(centerNode);
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// centerNode->setPos(0, 0);
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if (oldscene)
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{
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delete oldscene;
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}
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if (oldscene != NULL)
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{
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delete oldscene;
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}
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nodeMap.clear();
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edgeList.clear();
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arrowList.clear();
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return true;
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_edges.clear();
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_nodes.clear();
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}
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void GraphWidget::addNode(uint32_t type, std::string id, std::string name)
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GraphWidget::NodeId GraphWidget::addNode(const std::string& node_string,uint32_t flags)
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{
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Node *node = new Node(this, type, id, name);
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/* store node */
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nodeMap[id] = node;
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Node *node = new Node(node_string,flags,this);
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_nodes.push_back(node) ;
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scene()->addItem(node);
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node->setPos(-50 + qrand() % 100 , -50 + qrand() % 100);
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node->setPos(-50+rand()%1000/53.0f, -50+rand()%1000/53.0f);
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return _nodes.size()-1 ;
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}
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void GraphWidget::addEdge(std::string id1, std::string id2)
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GraphWidget::EdgeId GraphWidget::addEdge(NodeId n1,NodeId n2)
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{
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std::map<std::string, Node *>::iterator it;
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Node *n1 = NULL;
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Node *n2 = NULL;
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if (id1 == "")
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{
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n1 = centerNode;
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}
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else
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{
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it = nodeMap.find(id1);
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if (it != nodeMap.end())
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{
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n1 = it->second;
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}
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}
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it = nodeMap.find(id2);
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if (it != nodeMap.end())
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{
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n2 = it->second;
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}
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if ((n1) && (n2))
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{
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Edge *edge = new Edge(n1, n2);
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scene()->addItem(edge);
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edgeList.push_back(edge);
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}
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Edge *edge = new Edge(_nodes[n1],_nodes[n2]);
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scene()->addItem(edge);
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return 0 ;
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}
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void GraphWidget::addArrow(std::string id1, std::string id2)
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{
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std::map<std::string, Node *>::iterator it;
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Node *n1 = NULL;
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Node *n2 = NULL;
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if (id1 == "")
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{
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n1 = centerNode;
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}
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else
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{
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it = nodeMap.find(id1);
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if (it != nodeMap.end())
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{
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n1 = it->second;
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}
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}
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it = nodeMap.find(id2);
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if (it != nodeMap.end())
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{
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n2 = it->second;
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}
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if ((n1) && (n2))
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{
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Arrow *arrow = new Arrow(n1, n2);
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scene()->addItem(arrow);
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arrowList.push_back(arrow);
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}
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}
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void GraphWidget::itemMoved()
|
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{
|
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if (!timerId)
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timerId = startTimer(1000 / 1);
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timerId = startTimer(1000 / 25);
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}
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|
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void GraphWidget::keyPressEvent(QKeyEvent *event)
|
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{
|
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switch (event->key()) {
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case Qt::Key_Up:
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centerNode->moveBy(0, -20);
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break;
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case Qt::Key_Down:
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centerNode->moveBy(0, 20);
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break;
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case Qt::Key_Left:
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centerNode->moveBy(-20, 0);
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break;
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case Qt::Key_Right:
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centerNode->moveBy(20, 0);
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break;
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// case Qt::Key_Up:
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// centerNode->moveBy(0, -20);
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// break;
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// case Qt::Key_Down:
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// centerNode->moveBy(0, 20);
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// break;
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// case Qt::Key_Left:
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// centerNode->moveBy(-20, 0);
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// break;
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// case Qt::Key_Right:
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// centerNode->moveBy(20, 0);
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// break;
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case Qt::Key_Plus:
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scaleView(1.2);
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scaleView(qreal(1.2));
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break;
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case Qt::Key_Minus:
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scaleView(1 / 1.2);
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scaleView(1 / qreal(1.2));
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break;
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case Qt::Key_Space:
|
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case Qt::Key_Enter:
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@ -218,22 +215,95 @@ void GraphWidget::keyPressEvent(QKeyEvent *event)
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}
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}
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static void convolveWithGaussian(double *forceMap,int S,int s)
|
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{
|
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static double *bf = NULL ;
|
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|
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if(bf == NULL)
|
||||
{
|
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bf = new double[S*S*2] ;
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||||
|
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for(int i=0;i<S;++i)
|
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for(int j=0;j<S;++j)
|
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{
|
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int x = (i<S/2)?i:(S-i) ;
|
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int y = (j<S/2)?j:(S-j) ;
|
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int l=2*(x*x+y*y);
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bf[2*(i+S*j)] = log(sqrtf(0.1 + x*x+y*y)); // linear -> derivative is constant
|
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bf[2*(i+S*j)+1] = 0 ;
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}
|
||||
|
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unsigned long nn[2] = {S,S};
|
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fourn(&bf[-1],&nn[-1],2,1) ;
|
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}
|
||||
|
||||
unsigned long nn[2] = {S,S};
|
||||
fourn(&forceMap[-1],&nn[-1],2,1) ;
|
||||
|
||||
for(int i=0;i<S;++i)
|
||||
for(int j=0;j<S;++j)
|
||||
{
|
||||
float a = forceMap[2*(i+S*j)]*bf[2*(i+S*j)] - forceMap[2*(i+S*j)+1]*bf[2*(i+S*j)+1] ;
|
||||
float b = forceMap[2*(i+S*j)]*bf[2*(i+S*j)+1] + forceMap[2*(i+S*j)+1]*bf[2*(i+S*j)] ;
|
||||
|
||||
forceMap[2*(i+S*j)] = a ;
|
||||
forceMap[2*(i+S*j)+1] = b ;
|
||||
}
|
||||
|
||||
fourn(&forceMap[-1],&nn[-1],2,-1) ;
|
||||
|
||||
for(int i=0;i<S*S*2;++i)
|
||||
forceMap[i] /= S*S;
|
||||
}
|
||||
|
||||
void GraphWidget::timerEvent(QTimerEvent *event)
|
||||
{
|
||||
if(!isVisible())
|
||||
return;
|
||||
Q_UNUSED(event);
|
||||
|
||||
QList<Node *> nodes;
|
||||
foreach (QGraphicsItem *item, scene()->items()) {
|
||||
if (Node *node = qgraphicsitem_cast<Node *>(item))
|
||||
nodes << node;
|
||||
}
|
||||
static const int S = 256 ;
|
||||
static double *forceMap = new double[2*S*S] ;
|
||||
|
||||
foreach (Node *node, nodes)
|
||||
node->calculateForces();
|
||||
memset(forceMap,0,2*S*S*sizeof(double)) ;
|
||||
QRectF R(scene()->sceneRect()) ;
|
||||
|
||||
foreach (Node *node, _nodes)
|
||||
{
|
||||
QPointF pos = node->mapToScene(QPointF(0,0)) ;
|
||||
|
||||
float x = S*(pos.x()-R.left())/R.width() ;
|
||||
float y = S*(pos.y()- R.top())/R.height() ;
|
||||
|
||||
int i=(int)floor(x) ;
|
||||
int j=(int)floor(y) ;
|
||||
float di = x-i ;
|
||||
float dj = y-j ;
|
||||
|
||||
if( i>=0 && i<S-1 && j>=0 && j<S-1)
|
||||
{
|
||||
forceMap[2*(i +S*(j ))] += (1-di)*(1-dj) ;
|
||||
forceMap[2*(i+1+S*(j ))] += di *(1-dj) ;
|
||||
forceMap[2*(i +S*(j+1))] += (1-di)*dj ;
|
||||
forceMap[2*(i+1+S*(j+1))] += di *dj ;
|
||||
}
|
||||
}
|
||||
|
||||
// compute convolution with 1/omega kernel.
|
||||
convolveWithGaussian(forceMap,S,20) ;
|
||||
|
||||
static int toto=0 ;
|
||||
static float speedf=1.0f;
|
||||
|
||||
foreach (Node *node, _nodes)
|
||||
{
|
||||
QPointF pos = node->mapToScene(QPointF(0,0)) ;
|
||||
float x = S*(pos.x()-R.left())/R.width() ;
|
||||
float y = S*(pos.y()-R.top())/R.height() ;
|
||||
|
||||
node->calculateForces(forceMap,R.width(),R.height(),S,S,x,y,speedf);
|
||||
}
|
||||
|
||||
bool itemsMoved = false;
|
||||
foreach (Node *node, nodes) {
|
||||
foreach (Node *node, _nodes) {
|
||||
if (node->advance())
|
||||
itemsMoved = true;
|
||||
}
|
||||
|
|
@ -271,19 +341,19 @@ void GraphWidget::drawBackground(QPainter *painter, const QRectF &rect)
|
|||
painter->drawRect(sceneRect);
|
||||
|
||||
// Text
|
||||
// QRectF textRect(sceneRect.left() + 4, sceneRect.top() + 4,
|
||||
// sceneRect.width() - 4, sceneRect.height() - 4);
|
||||
// QString message(tr("Click and drag the nodes around, and zoom with the mouse "
|
||||
// "wheel or the '+' and '-' keys"));
|
||||
//
|
||||
// QFont font = painter->font();
|
||||
// font.setBold(true);
|
||||
// font.setPointSize(14);
|
||||
// painter->setFont(font);
|
||||
// painter->setPen(Qt::lightGray);
|
||||
// painter->drawText(textRect.translated(2, 2), message);
|
||||
// painter->setPen(Qt::black);
|
||||
// painter->drawText(textRect, message);
|
||||
QRectF textRect(sceneRect.left() + 4, sceneRect.top() + 4,
|
||||
sceneRect.width() - 4, sceneRect.height() - 4);
|
||||
QString message(tr("Click and drag the nodes around, and zoom with the mouse "
|
||||
"wheel or the '+' and '-' keys"));
|
||||
|
||||
QFont font = painter->font();
|
||||
font.setBold(true);
|
||||
font.setPointSize(14);
|
||||
painter->setFont(font);
|
||||
painter->setPen(Qt::lightGray);
|
||||
painter->drawText(textRect.translated(2, 2), message);
|
||||
painter->setPen(Qt::black);
|
||||
painter->drawText(textRect, message);
|
||||
}
|
||||
|
||||
void GraphWidget::scaleView(qreal scaleFactor)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue