scatterdatamodifier.cpp Example File

scatter/scatterdatamodifier.cpp
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#include "scatterdatamodifier.h" #include <QtDataVisualization/qscatterdataproxy.h> #include <QtDataVisualization/qvalue3daxis.h> #include <QtDataVisualization/q3dscene.h> #include <QtDataVisualization/q3dcamera.h> #include <QtDataVisualization/qscatter3dseries.h> #include <QtDataVisualization/q3dtheme.h> #include <QtCore/qmath.h> #include <QtCore/qrandom.h> #include <QtWidgets/QComboBox> using namespace QtDataVisualization; //#define RANDOM_SCATTER // Uncomment this to switch to random scatter const int numberOfItems = 3600; const float curveDivider = 3.0f; const int lowerNumberOfItems = 900; const float lowerCurveDivider = 0.75f; ScatterDataModifier::ScatterDataModifier(Q3DScatter *scatter) : m_graph(scatter), m_fontSize(40.0f), m_style(QAbstract3DSeries::MeshSphere), m_smooth(true), m_itemCount(lowerNumberOfItems), m_curveDivider(lowerCurveDivider) { m_graph->activeTheme()->setType(Q3DTheme::ThemeEbony); QFont font = m_graph->activeTheme()->font(); font.setPointSize(m_fontSize); m_graph->activeTheme()->setFont(font); m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualitySoftLow); m_graph->scene()->activeCamera()->setCameraPreset(Q3DCamera::CameraPresetFront); QScatterDataProxy *proxy = new QScatterDataProxy; QScatter3DSeries *series = new QScatter3DSeries(proxy); series->setItemLabelFormat(QStringLiteral("@xTitle: @xLabel @yTitle: @yLabel @zTitle: @zLabel")); series->setMeshSmooth(m_smooth); m_graph->addSeries(series); addData(); } ScatterDataModifier::~ScatterDataModifier() { delete m_graph; } void ScatterDataModifier::addData() { // Configure the axes according to the data m_graph->axisX()->setTitle("X"); m_graph->axisY()->setTitle("Y"); m_graph->axisZ()->setTitle("Z"); QScatterDataArray *dataArray = new QScatterDataArray; dataArray->resize(m_itemCount); QScatterDataItem *ptrToDataArray = &dataArray->first(); #ifdef RANDOM_SCATTER for (int i = 0; i < m_itemCount; i++) { ptrToDataArray->setPosition(randVector()); ptrToDataArray++; } #else float limit = qSqrt(m_itemCount) / 2.0f; for (float i = -limit; i < limit; i++) { for (float j = -limit; j < limit; j++) { ptrToDataArray->setPosition(QVector3D(i + 0.5f, qCos(qDegreesToRadians((i * j) / m_curveDivider)), j + 0.5f)); ptrToDataArray++; } } #endif m_graph->seriesList().at(0)->dataProxy()->resetArray(dataArray); } void ScatterDataModifier::changeStyle(int style) { QComboBox *comboBox = qobject_cast<QComboBox *>(sender()); if (comboBox) { m_style = QAbstract3DSeries::Mesh(comboBox->itemData(style).toInt()); if (m_graph->seriesList().size()) m_graph->seriesList().at(0)->setMesh(m_style); } } void ScatterDataModifier::setSmoothDots(int smooth) { m_smooth = bool(smooth); QScatter3DSeries *series = m_graph->seriesList().at(0); series->setMeshSmooth(m_smooth); } void ScatterDataModifier::changeTheme(int theme) { Q3DTheme *currentTheme = m_graph->activeTheme(); currentTheme->setType(Q3DTheme::Theme(theme)); emit backgroundEnabledChanged(currentTheme->isBackgroundEnabled()); emit gridEnabledChanged(currentTheme->isGridEnabled()); emit fontChanged(currentTheme->font()); } void ScatterDataModifier::changePresetCamera() { static int preset = Q3DCamera::CameraPresetFrontLow; m_graph->scene()->activeCamera()->setCameraPreset((Q3DCamera::CameraPreset)preset); if (++preset > Q3DCamera::CameraPresetDirectlyBelow) preset = Q3DCamera::CameraPresetFrontLow; } void ScatterDataModifier::changeLabelStyle() { m_graph->activeTheme()->setLabelBackgroundEnabled(!m_graph->activeTheme()->isLabelBackgroundEnabled()); } void ScatterDataModifier::changeFont(const QFont &font) { QFont newFont = font; newFont.setPointSizeF(m_fontSize); m_graph->activeTheme()->setFont(newFont); } 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); } void ScatterDataModifier::setBackgroundEnabled(int enabled) { m_graph->activeTheme()->setBackgroundEnabled((bool)enabled); } void ScatterDataModifier::setGridEnabled(int enabled) { m_graph->activeTheme()->setGridEnabled((bool)enabled); } void ScatterDataModifier::toggleItemCount() { if (m_itemCount == numberOfItems) { m_itemCount = lowerNumberOfItems; m_curveDivider = lowerCurveDivider; } else { m_itemCount = numberOfItems; m_curveDivider = curveDivider; } m_graph->seriesList().at(0)->dataProxy()->resetArray(0); addData(); } QVector3D ScatterDataModifier::randVector() { return QVector3D( (float)(QRandomGenerator::global()->bounded(100)) / 2.0f - (float)(QRandomGenerator::global()->bounded(100)) / 2.0f, (float)(QRandomGenerator::global()->bounded(100)) / 100.0f - (float)(QRandomGenerator::global()->bounded(100)) / 100.0f, (float)(QRandomGenerator::global()->bounded(100)) / 2.0f - (float)(QRandomGenerator::global()->bounded(100)) / 2.0f); }

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