customitemgraph.cpp Example File

customitems/customitemgraph.cpp
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 #include "customitemgraph.h"

 #include <QtDataVisualization/Q3DTheme>
 #include <QtDataVisualization/QCustom3DItem>
 #include <QtDataVisualization/QCustom3DLabel>
 #include <QtGui/QImage>

 using namespace QtDataVisualization;

 CustomItemGraph::CustomItemGraph(Q3DSurface *surface, QLabel *label)
     : m_graph(surface),
       m_textField(label),
       m_previouslyAnimatedItem(0)
 {
     QImage layerOneHMap(":/maps/layer_1.png");
     QHeightMapSurfaceDataProxy *layerOneProxy = new QHeightMapSurfaceDataProxy(layerOneHMap);
     QSurface3DSeries *layerOneSeries = new QSurface3DSeries(layerOneProxy);
     layerOneSeries->setItemLabelFormat(QStringLiteral("(@xLabel, @zLabel): @yLabel"));
     layerOneProxy->setValueRanges(34.0f, 40.0f, 18.0f, 24.0f);
     layerOneSeries->setDrawMode(QSurface3DSeries::DrawSurface);
     layerOneSeries->setFlatShadingEnabled(false);

     QImage layerTwoHMap(":/maps/layer_2.png");
     QHeightMapSurfaceDataProxy *layerTwoProxy = new QHeightMapSurfaceDataProxy(layerTwoHMap);
     QSurface3DSeries *layerTwoSeries = new QSurface3DSeries(layerTwoProxy);
     layerTwoSeries->setItemLabelFormat(QStringLiteral("(@xLabel, @zLabel): @yLabel"));
     layerTwoProxy->setValueRanges(34.0f, 40.0f, 18.0f, 24.0f);
     layerTwoSeries->setDrawMode(QSurface3DSeries::DrawSurface);
     layerTwoSeries->setFlatShadingEnabled(false);

     QImage layerThreeHMap(":/maps/layer_3.png");
     QHeightMapSurfaceDataProxy *layerThreeProxy = new QHeightMapSurfaceDataProxy(layerThreeHMap);
     QSurface3DSeries *layerThreeSeries = new QSurface3DSeries(layerThreeProxy);
     layerThreeSeries->setItemLabelFormat(QStringLiteral("(@xLabel, @zLabel): @yLabel"));
     layerThreeProxy->setValueRanges(34.0f, 40.0f, 18.0f, 24.0f);
     layerThreeSeries->setDrawMode(QSurface3DSeries::DrawSurface);
     layerThreeSeries->setFlatShadingEnabled(false);

     m_graph->axisX()->setLabelFormat("%.1f N");
     m_graph->axisZ()->setLabelFormat("%.1f E");
     m_graph->axisX()->setRange(34.0f, 40.0f);
     m_graph->axisY()->setRange(0.0f, 200.0f);
     m_graph->axisZ()->setRange(18.0f, 24.0f);

     m_graph->axisX()->setTitle(QStringLiteral("Latitude"));
     m_graph->axisY()->setTitle(QStringLiteral("Height"));
     m_graph->axisZ()->setTitle(QStringLiteral("Longitude"));

     m_graph->addSeries(layerOneSeries);
     m_graph->addSeries(layerTwoSeries);
     m_graph->addSeries(layerThreeSeries);

     QLinearGradient grOne;
     grOne.setColorAt(0.0, Qt::black);
     grOne.setColorAt(0.38, Qt::darkYellow);
     grOne.setColorAt(0.39, Qt::darkGreen);
     grOne.setColorAt(0.5, Qt::darkGray);
     grOne.setColorAt(1.0, Qt::gray);
     m_graph->seriesList().at(0)->setBaseGradient(grOne);
     m_graph->seriesList().at(0)->setColorStyle(Q3DTheme::ColorStyleRangeGradient);

     QLinearGradient grTwo;
     grTwo.setColorAt(0.385, Qt::blue);
     grTwo.setColorAt(0.395, Qt::white);
     m_graph->seriesList().at(1)->setBaseGradient(grTwo);
     m_graph->seriesList().at(1)->setColorStyle(Q3DTheme::ColorStyleRangeGradient);

     QLinearGradient grThree;
     grThree.setColorAt(0.0, Qt::white);
     grThree.setColorAt(0.05, Qt::black);
     m_graph->seriesList().at(2)->setBaseGradient(grThree);
     m_graph->seriesList().at(2)->setColorStyle(Q3DTheme::ColorStyleRangeGradient);

     m_graph->scene()->activeCamera()->setCameraPreset(Q3DCamera::CameraPresetFront);

     connect(m_graph, &QAbstract3DGraph::selectedElementChanged,
             this, &CustomItemGraph::handleElementSelected);

     m_selectionAnimation = new QPropertyAnimation(this);
     m_selectionAnimation->setPropertyName("scaling");
     m_selectionAnimation->setDuration(500);
     m_selectionAnimation->setLoopCount(-1);

     QFont titleFont = QFont("Century Gothic", 30);
     titleFont.setBold(true);
     QCustom3DLabel *titleLabel = new QCustom3DLabel("Oil Rigs on Imaginary Sea", titleFont,
                                                     QVector3D(0.0f, 1.2f, 0.0f),
                                                     QVector3D(1.0f, 1.0f, 0.0f),
                                                     QQuaternion());
     titleLabel->setPositionAbsolute(true);
     titleLabel->setFacingCamera(true);
     titleLabel->setBackgroundColor(QColor(0x66cdaa));
     m_graph->addCustomItem(titleLabel);

     toggleItemOne(true);
     toggleItemTwo(true);
 }

 CustomItemGraph::~CustomItemGraph()
 {
     delete m_graph;
 }

 void CustomItemGraph::toggleItemOne(bool show)
 {
     QVector3D positionOne = QVector3D(39.0f, 77.0f, 19.2f);
     QVector3D positionOnePipe = QVector3D(39.0f, 45.0f, 19.2f);
     QVector3D positionOneLabel = QVector3D(39.0f, 107.0f, 19.2f);
     if (show) {
         QImage color = QImage(2, 2, QImage::Format_RGB32);
         color.fill(Qt::red);
         QCustom3DItem *item = new QCustom3DItem(":/items/oilrig.obj", positionOne,
                                                 QVector3D(0.025f, 0.025f, 0.025f),
                                                 QQuaternion::fromAxisAndAngle(0.0f, 1.0f, 0.0f, 45.0f),
                                                 color);
         m_graph->addCustomItem(item);
         item = new QCustom3DItem(":/items/pipe.obj", positionOnePipe,
                                  QVector3D(0.005f, 0.5f, 0.005f),
                                  QQuaternion(),
                                  color);
         item->setShadowCasting(false);
         m_graph->addCustomItem(item);

         QCustom3DLabel *label = new QCustom3DLabel();
         label->setText("Oil Rig One");
         label->setPosition(positionOneLabel);
         label->setScaling(QVector3D(1.0f, 1.0f, 1.0f));
         m_graph->addCustomItem(label);
     } else {
         resetSelection();
         m_graph->removeCustomItemAt(positionOne);
         m_graph->removeCustomItemAt(positionOnePipe);
         m_graph->removeCustomItemAt(positionOneLabel);
     }
 }

 void CustomItemGraph::toggleItemTwo(bool show)
 {
     QVector3D positionTwo = QVector3D(34.5f, 77.0f, 23.4f);
     QVector3D positionTwoPipe = QVector3D(34.5f, 45.0f, 23.4f);
     QVector3D positionTwoLabel = QVector3D(34.5f, 107.0f, 23.4f);
     if (show) {
         QImage color = QImage(2, 2, QImage::Format_RGB32);
         color.fill(Qt::red);
         QCustom3DItem *item = new QCustom3DItem();
         item->setMeshFile(":/items/oilrig.obj");
         item->setPosition(positionTwo);
         item->setScaling(QVector3D(0.025f, 0.025f, 0.025f));
         item->setRotation(QQuaternion::fromAxisAndAngle(0.0f, 1.0f, 0.0f, 25.0f));
         item->setTextureImage(color);
         m_graph->addCustomItem(item);
         item = new QCustom3DItem(":/items/pipe.obj", positionTwoPipe,
                                  QVector3D(0.005f, 0.5f, 0.005f),
                                  QQuaternion(),
                                  color);
         item->setShadowCasting(false);
         m_graph->addCustomItem(item);

         QCustom3DLabel *label = new QCustom3DLabel();
         label->setText("Oil Rig Two");
         label->setPosition(positionTwoLabel);
         label->setScaling(QVector3D(1.0f, 1.0f, 1.0f));
         m_graph->addCustomItem(label);
     } else {
         resetSelection();
         m_graph->removeCustomItemAt(positionTwo);
         m_graph->removeCustomItemAt(positionTwoPipe);
         m_graph->removeCustomItemAt(positionTwoLabel);
     }
 }

 void CustomItemGraph::toggleItemThree(bool show)
 {
     QVector3D positionThree = QVector3D(34.5f, 86.0f, 19.1f);
     QVector3D positionThreeLabel = QVector3D(34.5f, 116.0f, 19.1f);
     if (show) {
         QImage color = QImage(2, 2, QImage::Format_RGB32);
         color.fill(Qt::darkMagenta);
         QCustom3DItem *item = new QCustom3DItem();
         item->setMeshFile(":/items/refinery.obj");
         item->setPosition(positionThree);
         item->setScaling(QVector3D(0.04f, 0.04f, 0.04f));
         item->setRotation(QQuaternion::fromAxisAndAngle(0.0f, 1.0f, 0.0f, 75.0f));
         item->setTextureImage(color);
         m_graph->addCustomItem(item);

         QCustom3DLabel *label = new QCustom3DLabel();
         label->setText("Refinery");
         label->setPosition(positionThreeLabel);
         label->setScaling(QVector3D(1.0f, 1.0f, 1.0f));
         m_graph->addCustomItem(label);
     } else {
         resetSelection();
         m_graph->removeCustomItemAt(positionThree);
         m_graph->removeCustomItemAt(positionThreeLabel);
     }
 }

 void CustomItemGraph::toggleSeeThrough(bool seethrough)
 {
     if (seethrough) {
         m_graph->seriesList().at(0)->setDrawMode(QSurface3DSeries::DrawWireframe);
         m_graph->seriesList().at(1)->setDrawMode(QSurface3DSeries::DrawWireframe);
     } else {
         m_graph->seriesList().at(0)->setDrawMode(QSurface3DSeries::DrawSurface);
         m_graph->seriesList().at(1)->setDrawMode(QSurface3DSeries::DrawSurface);
     }
 }

 void CustomItemGraph::toggleOilHighlight(bool highlight)
 {
     if (highlight) {
         QLinearGradient grThree;
         grThree.setColorAt(0.0, Qt::black);
         grThree.setColorAt(0.05, Qt::red);
         m_graph->seriesList().at(2)->setBaseGradient(grThree);
     } else {
         QLinearGradient grThree;
         grThree.setColorAt(0.0, Qt::white);
         grThree.setColorAt(0.05, Qt::black);
         m_graph->seriesList().at(2)->setBaseGradient(grThree);
     }
 }

 void CustomItemGraph::toggleShadows(bool shadows)
 {
     if (shadows)
         m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualityMedium);
     else
         m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualityNone);
 }

 void CustomItemGraph::handleElementSelected(QAbstract3DGraph::ElementType type)
 {
     resetSelection();
     if (type == QAbstract3DGraph::ElementCustomItem) {
         QCustom3DItem *item = m_graph->selectedCustomItem();
         QString text;
         if (qobject_cast<QCustom3DLabel *>(item) != 0) {
             text.append("Custom label: ");
         } else {
             QStringList split = item->meshFile().split("/");
             text.append(split.last());
             text.append(": ");
         }
         int index = m_graph->selectedCustomItemIndex();
         text.append(QString::number(index));
         m_textField->setText(text);
         m_previouslyAnimatedItem = item;
         m_previousScaling = item->scaling();
         m_selectionAnimation->setTargetObject(item);
         m_selectionAnimation->setStartValue(item->scaling());
         m_selectionAnimation->setEndValue(item->scaling() * 1.5f);
         m_selectionAnimation->start();
     } else if (type == QAbstract3DGraph::ElementSeries) {
         QString text = "Surface (";
         QSurface3DSeries *series = m_graph->selectedSeries();
         if (series) {
             QPoint point = series->selectedPoint();
             QString posStr;
             posStr.setNum(point.x());
             text.append(posStr);
             text.append(", ");
             posStr.setNum(point.y());
             text.append(posStr);
         }
         text.append(")");
         m_textField->setText(text);
     } else if (type > QAbstract3DGraph::ElementSeries
                && type < QAbstract3DGraph::ElementCustomItem) {
         int index = m_graph->selectedLabelIndex();
         QString text;
         if (type == QAbstract3DGraph::ElementAxisXLabel)
             text.append("Axis X label: ");
         else if (type == QAbstract3DGraph::ElementAxisYLabel)
             text.append("Axis Y label: ");
         else
             text.append("Axis Z label: ");
         text.append(QString::number(index));
         m_textField->setText(text);
     } else {
         m_textField->setText("Nothing");
     }
 }

 void CustomItemGraph::resetSelection()
 {
     m_selectionAnimation->stop();
     if (m_previouslyAnimatedItem)
         m_previouslyAnimatedItem->setScaling(m_previousScaling);
     m_previouslyAnimatedItem = 0;
 }