scatterdatamodifier.cpp Example File

custominput/scatterdatamodifier.cpp
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#include "scatterdatamodifier.h" #include <QtDataVisualization/QScatterDataProxy> #include <QtDataVisualization/QValue3DAxis> #include <QtDataVisualization/Q3DScene> #include <QtDataVisualization/Q3DCamera> #include <QtDataVisualization/QScatter3DSeries> #include <QtDataVisualization/Q3DTheme> #include <QtCore/qmath.h> #include <QtCore/QTextStream> #include <QtCore/QDebug> using namespace QtDataVisualization; ScatterDataModifier::ScatterDataModifier(Q3DScatter *scatter) : m_graph(scatter), m_inputHandler(new CustomInputHandler()) { m_graph->activeTheme()->setType(Q3DTheme::ThemeDigia); m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualityMedium); m_graph->scene()->activeCamera()->setCameraPreset(Q3DCamera::CameraPresetFront); m_graph->setAxisX(new QValue3DAxis); m_graph->setAxisY(new QValue3DAxis); m_graph->setAxisZ(new QValue3DAxis); m_graph->axisX()->setRange(-10.0f, 10.0f); m_graph->axisY()->setRange(-5.0f, 5.0f); m_graph->axisZ()->setRange(-5.0f, 5.0f); QScatter3DSeries *series = new QScatter3DSeries; series->setItemLabelFormat(QStringLiteral("@xLabel, @yLabel, @zLabel")); series->setMesh(QAbstract3DSeries::MeshCube); series->setItemSize(0.15f); m_graph->addSeries(series); m_animationCameraX = new QPropertyAnimation(m_graph->scene()->activeCamera(), "xRotation"); m_animationCameraX->setDuration(20000); m_animationCameraX->setStartValue(QVariant::fromValue(0.0f)); m_animationCameraX->setEndValue(QVariant::fromValue(360.0f)); m_animationCameraX->setLoopCount(-1); QPropertyAnimation *upAnimation = new QPropertyAnimation(m_graph->scene()->activeCamera(), "yRotation"); upAnimation->setDuration(9000); upAnimation->setStartValue(QVariant::fromValue(5.0f)); upAnimation->setEndValue(QVariant::fromValue(45.0f)); QPropertyAnimation *downAnimation = new QPropertyAnimation(m_graph->scene()->activeCamera(), "yRotation"); downAnimation->setDuration(9000); downAnimation->setStartValue(QVariant::fromValue(45.0f)); downAnimation->setEndValue(QVariant::fromValue(5.0f)); m_animationCameraY = new QSequentialAnimationGroup(); m_animationCameraY->setLoopCount(-1); m_animationCameraY->addAnimation(upAnimation); m_animationCameraY->addAnimation(downAnimation); m_animationCameraX->start(); m_animationCameraY->start(); // Give ownership of the handler to the graph and make it the active handler m_graph->setActiveInputHandler(m_inputHandler); m_selectionTimer = new QTimer(this); m_selectionTimer->setInterval(10); m_selectionTimer->setSingleShot(false); QObject::connect(m_selectionTimer, &QTimer::timeout, this, &ScatterDataModifier::triggerSelection); m_selectionTimer->start(); } ScatterDataModifier::~ScatterDataModifier() { delete m_graph; } void ScatterDataModifier::start() { addData(); } void ScatterDataModifier::addData() { QVector<QVector3D> itemList; // Read data items from the file to QVector QTextStream stream; QFile dataFile(":/data/data.txt"); if (dataFile.open(QIODevice::ReadOnly | QIODevice::Text)) { stream.setDevice(&dataFile); while (!stream.atEnd()) { QString line = stream.readLine(); if (line.startsWith("#")) // Ignore comments continue; QStringList strList = line.split(",", QString::SkipEmptyParts); // Each line has three data items: xPos, yPos and zPos value if (strList.size() < 3) { qWarning() << "Invalid row read from data:" << line; continue; } itemList.append(QVector3D( strList.at(0).trimmed().toFloat(), strList.at(1).trimmed().toFloat(), strList.at(2).trimmed().toFloat())); } } else { qWarning() << "Unable to open data file:" << dataFile.fileName(); } // Add data from the QVector to datamodel QScatterDataArray *dataArray = new QScatterDataArray; dataArray->resize(itemList.count()); QScatterDataItem *ptrToDataArray = &dataArray->first(); for (int i = 0; i < itemList.count(); i++) { ptrToDataArray->setPosition(itemList.at(i)); ptrToDataArray++; } m_graph->seriesList().at(0)->dataProxy()->resetArray(dataArray); } void ScatterDataModifier::toggleCameraAnimation() { if (m_animationCameraX->state() != QAbstractAnimation::Paused) { m_animationCameraX->pause(); m_animationCameraY->pause(); } else { m_animationCameraX->resume(); m_animationCameraY->resume(); } } void ScatterDataModifier::triggerSelection() { m_graph->scene()->setSelectionQueryPosition(m_inputHandler->inputPosition()); } void ScatterDataModifier::shadowQualityUpdatedByVisual(QAbstract3DGraph::ShadowQuality sq) { int quality = int(sq); emit shadowQualityChanged(quality); // connected to a checkbox in main.cpp } void ScatterDataModifier::changeShadowQuality(int quality) { QAbstract3DGraph::ShadowQuality sq = QAbstract3DGraph::ShadowQuality(quality); m_graph->setShadowQuality(sq); }