void CQ3DBarsModifier::zoomToSelectedBar()
{
m_animationCameraX.stop();
m_animationCameraY.stop();
m_animationCameraZoom.stop();
m_animationCameraTarget.stop();
Q3DCamera *camera = m_graph->scene()->activeCamera();
float currentX = camera->xRotation();
float currentY = camera->yRotation();
float currentZoom = camera->zoomLevel();
QVector3D currentTarget = camera->target();
m_animationCameraX.setStartValue(QVariant::fromValue(currentX));
m_animationCameraY.setStartValue(QVariant::fromValue(currentY));
m_animationCameraZoom.setStartValue(QVariant::fromValue(currentZoom));
m_animationCameraTarget.setStartValue(QVariant::fromValue(currentTarget));
QPoint selectedBar = m_graph->selectedSeries()
? m_graph->selectedSeries()->selectedBar()
: QBar3DSeries::invalidSelectionPosition();
if (selectedBar != QBar3DSeries::invalidSelectionPosition())
{
// Normalize selected bar position within axis range to determine target coordinates
QVector3D endTarget;
float xMin = m_graph->columnAxis()->min();
float xRange = m_graph->columnAxis()->max() - xMin;
float zMin = m_graph->rowAxis()->min();
float zRange = m_graph->rowAxis()->max() - zMin;
endTarget.setX((selectedBar.y() - xMin) / xRange * 2.0f - 1.0f);
endTarget.setZ((selectedBar.x() - zMin) / zRange * 2.0f - 1.0f);
// Rotate the camera so that it always points approximately to the graph center
qreal endAngleX = 90.0 - qRadiansToDegrees(qAtan(qreal(endTarget.z() / endTarget.x())));
if (endTarget.x() > 0.0f)
endAngleX -= 180.0f;
float barValue = m_graph->selectedSeries()->dataProxy()->itemAt(selectedBar.x(),
selectedBar.y())->value();
float endAngleY = barValue >= 0.0f ? 30.0f : -30.0f;
if (m_graph->valueAxis()->reversed())
endAngleY *= -1.0f;
m_animationCameraX.setEndValue(QVariant::fromValue(float(endAngleX)));
m_animationCameraY.setEndValue(QVariant::fromValue(endAngleY));
m_animationCameraZoom.setEndValue(QVariant::fromValue(250));
m_animationCameraTarget.setEndValue(QVariant::fromValue(endTarget));
}
else
{
// No selected bar, so return to the default view
m_animationCameraX.setEndValue(QVariant::fromValue(m_defaultAngleX));
m_animationCameraY.setEndValue(QVariant::fromValue(m_defaultAngleY));
m_animationCameraZoom.setEndValue(QVariant::fromValue(m_defaultZoom));
m_animationCameraTarget.setEndValue(QVariant::fromValue(m_defaultTarget));
}
m_animationCameraX.start();
m_animationCameraY.start();
m_animationCameraZoom.start();
m_animationCameraTarget.start();
}
CQ3DBarsModifier::CQ3DBarsModifier(CQArrayAnnotationsWidget* widget, Q3DBars *bargraph)
: m_graph(bargraph),
m_inputHandler(NULL),
m_xRotation(0.0f),
m_yRotation(0.0f),
m_fontSize(30),
m_segments(4),
m_subSegments(3),
m_minval(-1.0f),
m_maxval(1.0f),
m_valueAxis(new QValue3DAxis),
m_rowAxis(new QCategory3DAxis),
m_colAxis(new QCategory3DAxis),
m_primarySeries(new QBar3DSeries),
m_barMesh(QAbstract3DSeries::MeshBar),
m_smooth(false)
{
m_graph->activeTheme()->setType(Q3DTheme::ThemeArmyBlue);
m_graph->activeTheme()->setBackgroundEnabled(false);
m_graph->activeTheme()->setLabelBackgroundEnabled(true);
m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualityNone);
m_graph->setMultiSeriesUniform(true);
m_valueAxis->setSegmentCount(m_segments);
m_valueAxis->setSubSegmentCount(m_subSegments);
m_valueAxis->setRange(m_minval, m_maxval);
m_valueAxis->setLabelFormat(QString(QStringLiteral("%.1f ")));
m_valueAxis->setLabelAutoRotation(30.0f);
m_valueAxis->setTitleVisible(false);
m_rowAxis->setLabelAutoRotation(30.0f);
m_rowAxis->setTitleVisible(false);
m_colAxis->setLabelAutoRotation(30.0f);
m_colAxis->setTitleVisible(false);
m_graph->setValueAxis(m_valueAxis);
m_graph->setRowAxis(m_rowAxis);
m_graph->setColumnAxis(m_colAxis);
m_primarySeries->setItemLabelFormat(QStringLiteral("@rowLabel, @colLabel : @valueLabel"));
m_primarySeries->setMesh(QAbstract3DSeries::MeshBar);
m_primarySeries->setMeshSmooth(false);
m_graph->addSeries(m_primarySeries);
changePresetCamera();
clearData();
// Set up property animations for zooming to the selected bar
Q3DCamera *camera = m_graph->scene()->activeCamera();
camera->setCameraPreset(Q3DCamera::CameraPresetIsometricRight);
m_defaultAngleX = camera->xRotation();
m_defaultAngleY = camera->yRotation();
m_defaultZoom = camera->zoomLevel();
m_defaultTarget = camera->target();
m_animationCameraX.setTargetObject(camera);
m_animationCameraY.setTargetObject(camera);
m_animationCameraZoom.setTargetObject(camera);
m_animationCameraTarget.setTargetObject(camera);
m_animationCameraX.setPropertyName("xRotation");
m_animationCameraY.setPropertyName("yRotation");
m_animationCameraZoom.setPropertyName("zoomLevel");
m_animationCameraTarget.setPropertyName("target");
int duration = 1700;
m_animationCameraX.setDuration(duration);
m_animationCameraY.setDuration(duration);
m_animationCameraZoom.setDuration(duration);
m_animationCameraTarget.setDuration(duration);
// The zoom always first zooms out above the graph and then zooms in
qreal zoomOutFraction = 0.3;
m_animationCameraX.setKeyValueAt(zoomOutFraction, QVariant::fromValue(0.0f));
m_animationCameraY.setKeyValueAt(zoomOutFraction, QVariant::fromValue(90.0f));
m_animationCameraZoom.setKeyValueAt(zoomOutFraction, QVariant::fromValue(50.0f));
m_animationCameraTarget.setKeyValueAt(zoomOutFraction,
QVariant::fromValue(QVector3D(0.0f, 0.0f, 0.0f)));
m_inputHandler = new CQCustomInputHandler(m_graph);
m_inputHandler->setAxes(m_rowAxis, m_colAxis, m_valueAxis);
m_graph->setActiveInputHandler(m_inputHandler);
connect(m_inputHandler, SIGNAL(signalShowContextMenu(const QPoint &)), widget, SLOT(slotShowContextMenu(const QPoint&)));
connect(m_inputHandler, SIGNAL(signalBarDoubleClicked(int, int)), widget, SLOT(selectTableCell(int, int)));
}