Graph Gallery

 // Copyright (C) 2023 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

 #include "surfacegraphmodifier.h"
 #include "custominputhandler.h"
 #include "highlightseries.h"
 #include "topographicseries.h"

 #include <QtCore/qmath.h>
 #include <QtGraphs/q3dtheme.h>
 #include <QtGraphs/qvalue3daxis.h>
 #include <QtGui/qimage.h>

 using namespace Qt::StringLiterals;

 const int sampleCountX = 150;
 const int sampleCountZ = 150;
 const int heightMapGridStepX = 6;
 const int heightMapGridStepZ = 6;
 const float sampleMin = -8.f;
 const float sampleMax = 8.f;

 const float areaWidth = 8000.f;
 const float areaHeight = 8000.f;
 const float aspectRatio = 0.1389f;
 const float minRange = areaWidth * 0.49f;

 SurfaceGraphModifier::SurfaceGraphModifier(Q3DSurface *surface, QLabel *label, QObject *parent)
     : QObject(parent)
     , m_graph(surface)
     , m_textField(label)
 {
     m_graph->setCameraZoomLevel(85.f);
     m_graph->setCameraPreset(QAbstract3DGraph::CameraPreset::IsometricRight);
     m_graph->activeTheme()->setType(Q3DTheme::Theme::Retro);

     m_graph->setAxisX(new QValue3DAxis);
     m_graph->setAxisY(new QValue3DAxis);
     m_graph->setAxisZ(new QValue3DAxis);

     //
     // Sqrt Sin
     //
     m_sqrtSinProxy = new QSurfaceDataProxy();
     m_sqrtSinSeries = new QSurface3DSeries(m_sqrtSinProxy);
     fillSqrtSinProxy();

     //
     // Multisurface heightmap
     //
     // Create the first surface layer
     QImage heightMapImageOne(":/data/layer_1.png");
     m_heightMapProxyOne = new QHeightMapSurfaceDataProxy(heightMapImageOne);
     m_heightMapSeriesOne = new QSurface3DSeries(m_heightMapProxyOne);
     m_heightMapSeriesOne->setItemLabelFormat(u"(@xLabel, @zLabel): @yLabel"_s);
     m_heightMapProxyOne->setValueRanges(34.f, 40.f, 18.f, 24.f);

     // Create the other 2 surface layers
     QImage heightMapImageTwo(":/data/layer_2.png");
     m_heightMapProxyTwo = new QHeightMapSurfaceDataProxy(heightMapImageTwo);
     m_heightMapSeriesTwo = new QSurface3DSeries(m_heightMapProxyTwo);
     m_heightMapSeriesTwo->setItemLabelFormat(u"(@xLabel, @zLabel): @yLabel"_s);
     m_heightMapProxyTwo->setValueRanges(34.f, 40.f, 18.f, 24.f);

     QImage heightMapImageThree(":/data/layer_3.png");
     m_heightMapProxyThree = new QHeightMapSurfaceDataProxy(heightMapImageThree);
     m_heightMapSeriesThree = new QSurface3DSeries(m_heightMapProxyThree);
     m_heightMapSeriesThree->setItemLabelFormat(u"(@xLabel, @zLabel): @yLabel"_s);
     m_heightMapProxyThree->setValueRanges(34.f, 40.f, 18.f, 24.f);

     // The images are the same size, so it's enough to get the dimensions from one
     m_heightMapWidth = heightMapImageOne.width();
     m_heightMapHeight = heightMapImageOne.height();

     // Set the gradients for multi-surface layers
     QLinearGradient grOne;
     grOne.setColorAt(0., Qt::black);
     grOne.setColorAt(0.38, Qt::darkYellow);
     grOne.setColorAt(0.39, Qt::darkGreen);
     grOne.setColorAt(0.5, Qt::darkGray);
     grOne.setColorAt(1., Qt::gray);
     m_heightMapSeriesOne->setBaseGradient(grOne);
     m_heightMapSeriesOne->setColorStyle(Q3DTheme::ColorStyle::RangeGradient);

     QLinearGradient grTwo;
     grTwo.setColorAt(0.39, Qt::blue);
     grTwo.setColorAt(0.4, Qt::white);
     m_heightMapSeriesTwo->setBaseGradient(grTwo);
     m_heightMapSeriesTwo->setColorStyle(Q3DTheme::ColorStyle::RangeGradient);

     QLinearGradient grThree;
     grThree.setColorAt(0., Qt::white);
     grThree.setColorAt(0.05, Qt::black);
     m_heightMapSeriesThree->setBaseGradient(grThree);
     m_heightMapSeriesThree->setColorStyle(Q3DTheme::ColorStyle::RangeGradient);

     // Custom items and label
     connect(m_graph,
             &QAbstract3DGraph::selectedElementChanged,
             this,
             &SurfaceGraphModifier::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);
     m_titleLabel = new QCustom3DLabel("Oil Rigs on Imaginary Sea",
                                       titleFont,
                                       QVector3D(0.f, 1.2f, 0.f),
                                       QVector3D(1.f, 1.f, 0.f),
                                       QQuaternion());
     m_titleLabel->setPositionAbsolute(true);
     m_titleLabel->setFacingCamera(true);
     m_titleLabel->setBackgroundColor(QColor(0x66cdaa));
     m_graph->addCustomItem(m_titleLabel);
     m_titleLabel->setVisible(false);

     // Make two of the custom object visible
     toggleItemOne(true);
     toggleItemTwo(true);

     //
     // Topographic map
     //
     m_topography = new TopographicSeries();
     m_topography->setTopographyFile(":/data/topography.png", areaWidth, areaHeight);
     m_topography->setItemLabelFormat(u"@yLabel m"_s);

     m_highlight = new HighlightSeries();
     m_highlight->setTopographicSeries(m_topography);
     m_highlight->setMinHeight(minRange * aspectRatio);
     m_highlight->handleGradientChange(areaWidth * aspectRatio);
     QObject::connect(m_graph->axisY(),
                      &QValue3DAxis::maxChanged,
                      m_highlight,
                      &HighlightSeries::handleGradientChange);

     m_customInputHandler = new CustomInputHandler(m_graph);
     m_customInputHandler->setHighlightSeries(m_highlight);
     m_customInputHandler->setAxes(m_graph->axisX(), m_graph->axisY(), m_graph->axisZ());
     m_customInputHandler->setLimits(0.f, areaWidth, minRange);
     m_customInputHandler->setAspectRatio(aspectRatio);
 }

 SurfaceGraphModifier::~SurfaceGraphModifier() {}

 void SurfaceGraphModifier::fillSqrtSinProxy()
 {
     float stepX = (sampleMax - sampleMin) / float(sampleCountX - 1);
     float stepZ = (sampleMax - sampleMin) / float(sampleCountZ - 1);

     QSurfaceDataArray dataArray;
     dataArray.reserve(sampleCountZ);
     for (int i = 0; i < sampleCountZ; ++i) {
         QSurfaceDataRow newRow;
         newRow.reserve(sampleCountX);
         // Keep values within range bounds, since just adding step can cause minor
         // drift due to the rounding errors.
         float z = qMin(sampleMax, (i * stepZ + sampleMin));
         for (int j = 0; j < sampleCountX; ++j) {
             float x = qMin(sampleMax, (j * stepX + sampleMin));
             float R = qSqrt(z * z + x * x) + 0.01f;
             float y = (qSin(R) / R + 0.24f) * 1.61f;
             newRow.append(QSurfaceDataItem(x, y, z));
         }
         dataArray.append(newRow);
     }

     m_sqrtSinProxy->resetArray(dataArray);
 }

 void SurfaceGraphModifier::enableSqrtSinModel(bool enable)
 {
     if (enable) {
         m_sqrtSinSeries->setDrawMode(QSurface3DSeries::DrawSurfaceAndWireframe);
         m_sqrtSinSeries->setFlatShadingEnabled(true);

         m_graph->axisX()->setLabelFormat("%.2f");
         m_graph->axisZ()->setLabelFormat("%.2f");
         m_graph->axisX()->setRange(sampleMin, sampleMax);
         m_graph->axisY()->setRange(0.f, 2.f);
         m_graph->axisZ()->setRange(sampleMin, sampleMax);
         m_graph->axisX()->setLabelAutoRotation(30.f);
         m_graph->axisY()->setLabelAutoRotation(90.f);
         m_graph->axisZ()->setLabelAutoRotation(30.f);

         m_graph->removeSeries(m_heightMapSeriesOne);
         m_graph->removeSeries(m_heightMapSeriesTwo);
         m_graph->removeSeries(m_heightMapSeriesThree);
         m_graph->removeSeries(m_topography);
         m_graph->removeSeries(m_highlight);

         m_graph->addSeries(m_sqrtSinSeries);

         m_titleLabel->setVisible(false);
         m_graph->axisX()->setTitleVisible(false);
         m_graph->axisY()->setTitleVisible(false);
         m_graph->axisZ()->setTitleVisible(false);

         m_graph->axisX()->setTitle({});
         m_graph->axisY()->setTitle({});
         m_graph->axisZ()->setTitle({});

         m_graph->setActiveInputHandler(m_defaultInputHandler);

         // Reset range sliders for Sqrt & Sin
         m_rangeMinX = sampleMin;
         m_rangeMinZ = sampleMin;
         m_stepX = (sampleMax - sampleMin) / float(sampleCountX - 1);
         m_stepZ = (sampleMax - sampleMin) / float(sampleCountZ - 1);
         m_axisMinSliderX->setMinimum(0);
         m_axisMinSliderX->setMaximum(sampleCountX - 2);
         m_axisMinSliderX->setValue(0);
         m_axisMaxSliderX->setMinimum(1);
         m_axisMaxSliderX->setMaximum(sampleCountX - 1);
         m_axisMaxSliderX->setValue(sampleCountX - 1);
         m_axisMinSliderZ->setMinimum(0);
         m_axisMinSliderZ->setMaximum(sampleCountZ - 2);
         m_axisMinSliderZ->setValue(0);
         m_axisMaxSliderZ->setMinimum(1);
         m_axisMaxSliderZ->setMaximum(sampleCountZ - 1);
         m_axisMaxSliderZ->setValue(sampleCountZ - 1);
     }
 }

 void SurfaceGraphModifier::enableHeightMapModel(bool enable)
 {
     if (enable) {
         m_heightMapSeriesOne->setDrawMode(QSurface3DSeries::DrawSurface);
         m_heightMapSeriesOne->setFlatShadingEnabled(false);
         m_heightMapSeriesTwo->setDrawMode(QSurface3DSeries::DrawSurface);
         m_heightMapSeriesTwo->setFlatShadingEnabled(false);
         m_heightMapSeriesThree->setDrawMode(QSurface3DSeries::DrawSurface);
         m_heightMapSeriesThree->setFlatShadingEnabled(false);

         m_graph->axisX()->setLabelFormat("%.1f N");
         m_graph->axisZ()->setLabelFormat("%.1f E");
         m_graph->axisX()->setRange(34.f, 40.f);
         m_graph->axisY()->setAutoAdjustRange(true);
         m_graph->axisZ()->setRange(18.f, 24.f);

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

         m_graph->removeSeries(m_sqrtSinSeries);
         m_graph->removeSeries(m_topography);
         m_graph->removeSeries(m_highlight);
         m_graph->addSeries(m_heightMapSeriesOne);
         m_graph->addSeries(m_heightMapSeriesTwo);
         m_graph->addSeries(m_heightMapSeriesThree);

         m_graph->setActiveInputHandler(m_defaultInputHandler);

         m_titleLabel->setVisible(true);
         m_graph->axisX()->setTitleVisible(true);
         m_graph->axisY()->setTitleVisible(true);
         m_graph->axisZ()->setTitleVisible(true);

         // Reset range sliders for height map
         int mapGridCountX = m_heightMapWidth / heightMapGridStepX;
         int mapGridCountZ = m_heightMapHeight / heightMapGridStepZ;
         m_rangeMinX = 34.f;
         m_rangeMinZ = 18.f;
         m_stepX = 6.f / float(mapGridCountX - 1);
         m_stepZ = 6.f / float(mapGridCountZ - 1);
         m_axisMinSliderX->setMinimum(0);
         m_axisMinSliderX->setMaximum(mapGridCountX - 2);
         m_axisMinSliderX->setValue(0);
         m_axisMaxSliderX->setMinimum(1);
         m_axisMaxSliderX->setMaximum(mapGridCountX - 1);
         m_axisMaxSliderX->setValue(mapGridCountX - 1);
         m_axisMinSliderZ->setMinimum(0);
         m_axisMinSliderZ->setMaximum(mapGridCountZ - 2);
         m_axisMinSliderZ->setValue(0);
         m_axisMaxSliderZ->setMinimum(1);
         m_axisMaxSliderZ->setMaximum(mapGridCountZ - 1);
         m_axisMaxSliderZ->setValue(mapGridCountZ - 1);
     }
 }

 void SurfaceGraphModifier::enableTopographyModel(bool enable)
 {
     if (enable) {
         m_graph->axisX()->setLabelFormat("%i");
         m_graph->axisZ()->setLabelFormat("%i");
         m_graph->axisX()->setRange(0.f, areaWidth);
         m_graph->axisY()->setRange(100.f, areaWidth * aspectRatio);
         m_graph->axisZ()->setRange(0.f, areaHeight);
         m_graph->axisX()->setLabelAutoRotation(30.f);
         m_graph->axisY()->setLabelAutoRotation(90.f);
         m_graph->axisZ()->setLabelAutoRotation(30.f);

         m_graph->removeSeries(m_sqrtSinSeries);
         m_graph->removeSeries(m_heightMapSeriesOne);
         m_graph->removeSeries(m_heightMapSeriesTwo);
         m_graph->removeSeries(m_heightMapSeriesThree);
         m_graph->addSeries(m_topography);
         m_graph->addSeries(m_highlight);

         m_titleLabel->setVisible(false);
         m_graph->axisX()->setTitleVisible(false);
         m_graph->axisY()->setTitleVisible(false);
         m_graph->axisZ()->setTitleVisible(false);

         m_graph->axisX()->setTitle({});
         m_graph->axisY()->setTitle({});
         m_graph->axisZ()->setTitle({});

         m_graph->setActiveInputHandler(m_customInputHandler);

         // Reset range sliders for topography map
         m_rangeMinX = 0.f;
         m_rangeMinZ = 0.f;
         m_stepX = 1.f;
         m_stepZ = 1.f;
         m_axisMinSliderX->setMinimum(0);
         m_axisMinSliderX->setMaximum(areaWidth - 200);
         m_axisMinSliderX->setValue(0);
         m_axisMaxSliderX->setMinimum(200);
         m_axisMaxSliderX->setMaximum(areaWidth);
         m_axisMaxSliderX->setValue(areaWidth);
         m_axisMinSliderZ->setMinimum(0);
         m_axisMinSliderZ->setMaximum(areaHeight - 200);
         m_axisMinSliderZ->setValue(0);
         m_axisMaxSliderZ->setMinimum(200);
         m_axisMaxSliderZ->setMaximum(areaHeight);
         m_axisMaxSliderZ->setValue(areaHeight);
     }
 }

 void SurfaceGraphModifier::adjustXMin(int min)
 {
     float minX = m_stepX * float(min) + m_rangeMinX;

     int max = m_axisMaxSliderX->value();
     if (min >= max) {
         max = min + 1;
         m_axisMaxSliderX->setValue(max);
     }
     float maxX = m_stepX * max + m_rangeMinX;

     setAxisXRange(minX, maxX);
 }

 void SurfaceGraphModifier::adjustXMax(int max)
 {
     float maxX = m_stepX * float(max) + m_rangeMinX;

     int min = m_axisMinSliderX->value();
     if (max <= min) {
         min = max - 1;
         m_axisMinSliderX->setValue(min);
     }
     float minX = m_stepX * min + m_rangeMinX;

     setAxisXRange(minX, maxX);
 }

 void SurfaceGraphModifier::adjustZMin(int min)
 {
     float minZ = m_stepZ * float(min) + m_rangeMinZ;

     int max = m_axisMaxSliderZ->value();
     if (min >= max) {
         max = min + 1;
         m_axisMaxSliderZ->setValue(max);
     }
     float maxZ = m_stepZ * max + m_rangeMinZ;

     setAxisZRange(minZ, maxZ);
 }

 void SurfaceGraphModifier::adjustZMax(int max)
 {
     float maxX = m_stepZ * float(max) + m_rangeMinZ;

     int min = m_axisMinSliderZ->value();
     if (max <= min) {
         min = max - 1;
         m_axisMinSliderZ->setValue(min);
     }
     float minX = m_stepZ * min + m_rangeMinZ;

     setAxisZRange(minX, maxX);
 }

 void SurfaceGraphModifier::setAxisXRange(float min, float max)
 {
     m_graph->axisX()->setRange(min, max);
 }

 void SurfaceGraphModifier::setAxisZRange(float min, float max)
 {
     m_graph->axisZ()->setRange(min, max);
 }

 void SurfaceGraphModifier::setBlackToYellowGradient()
 {
     QLinearGradient gr;
     gr.setColorAt(0.f, Qt::black);
     gr.setColorAt(0.33f, Qt::blue);
     gr.setColorAt(0.67f, Qt::red);
     gr.setColorAt(1.f, Qt::yellow);

     m_sqrtSinSeries->setBaseGradient(gr);
     m_sqrtSinSeries->setColorStyle(Q3DTheme::ColorStyle::RangeGradient);
 }

 void SurfaceGraphModifier::setGreenToRedGradient()
 {
     QLinearGradient gr;
     gr.setColorAt(0.f, Qt::darkGreen);
     gr.setColorAt(0.5f, Qt::yellow);
     gr.setColorAt(0.8f, Qt::red);
     gr.setColorAt(1.f, Qt::darkRed);

     m_sqrtSinSeries->setBaseGradient(gr);
     m_sqrtSinSeries->setColorStyle(Q3DTheme::ColorStyle::RangeGradient);
 }

 void SurfaceGraphModifier::toggleItemOne(bool show)
 {
     QVector3D positionOne = QVector3D(39.f, 77.f, 19.2f);
     QVector3D positionOnePipe = QVector3D(39.f, 45.f, 19.2f);
     QVector3D positionOneLabel = QVector3D(39.f, 107.f, 19.2f);
     if (show) {
         QImage color = QImage(2, 2, QImage::Format_RGB32);
         color.fill(Qt::red);
         auto *item = new QCustom3DItem(":/data/oilrig.mesh",
                                        positionOne,
                                        QVector3D(0.025f, 0.025f, 0.025f),
                                        QQuaternion::fromAxisAndAngle(0.f, 1.f, 0.f, 45.f),
                                        color);
         m_graph->addCustomItem(item);
         item = new QCustom3DItem(":/data/pipe.mesh",
                                  positionOnePipe,
                                  QVector3D(0.005f, 0.5f, 0.005f),
                                  QQuaternion(),
                                  color);
         item->setShadowCasting(false);
         m_graph->addCustomItem(item);

         auto *label = new QCustom3DLabel();
         label->setText("Oil Rig One");
         label->setPosition(positionOneLabel);
         label->setScaling(QVector3D(1.f, 1.f, 1.f));
         m_graph->addCustomItem(label);
     } else {
         resetSelection();
         m_graph->removeCustomItemAt(positionOne);
         m_graph->removeCustomItemAt(positionOnePipe);
         m_graph->removeCustomItemAt(positionOneLabel);
     }
 }

 void SurfaceGraphModifier::toggleItemTwo(bool show)
 {
     QVector3D positionTwo = QVector3D(34.5f, 77.f, 23.4f);
     QVector3D positionTwoPipe = QVector3D(34.5f, 45.f, 23.4f);
     QVector3D positionTwoLabel = QVector3D(34.5f, 107.f, 23.4f);
     if (show) {
         QImage color = QImage(2, 2, QImage::Format_RGB32);
         color.fill(Qt::red);
         auto *item = new QCustom3DItem();
         item->setMeshFile(":/data/oilrig.mesh");
         item->setPosition(positionTwo);
         item->setScaling(QVector3D(0.025f, 0.025f, 0.025f));
         item->setRotation(QQuaternion::fromAxisAndAngle(0.f, 1.f, 0.f, 25.f));
         item->setTextureImage(color);
         m_graph->addCustomItem(item);
         item = new QCustom3DItem(":/data/pipe.mesh",
                                  positionTwoPipe,
                                  QVector3D(0.005f, 0.5f, 0.005f),
                                  QQuaternion(),
                                  color);
         item->setShadowCasting(false);
         m_graph->addCustomItem(item);

         auto *label = new QCustom3DLabel();
         label->setText("Oil Rig Two");
         label->setPosition(positionTwoLabel);
         label->setScaling(QVector3D(1.f, 1.f, 1.f));
         m_graph->addCustomItem(label);
     } else {
         resetSelection();
         m_graph->removeCustomItemAt(positionTwo);
         m_graph->removeCustomItemAt(positionTwoPipe);
         m_graph->removeCustomItemAt(positionTwoLabel);
     }
 }

 void SurfaceGraphModifier::toggleItemThree(bool show)
 {
     QVector3D positionThree = QVector3D(34.5f, 86.f, 19.1f);
     QVector3D positionThreeLabel = QVector3D(34.5f, 116.f, 19.1f);
     if (show) {
         QImage color = QImage(2, 2, QImage::Format_RGB32);
         color.fill(Qt::darkMagenta);
         auto *item = new QCustom3DItem();
         item->setMeshFile(":/data/refinery.mesh");
         item->setPosition(positionThree);
         item->setScaling(QVector3D(0.04f, 0.04f, 0.04f));
         item->setRotation(QQuaternion::fromAxisAndAngle(0.f, 1.f, 0.f, 75.f));
         item->setTextureImage(color);
         m_graph->addCustomItem(item);

         auto *label = new QCustom3DLabel();
         label->setText("Refinery");
         label->setPosition(positionThreeLabel);
         label->setScaling(QVector3D(1.f, 1.f, 1.f));
         m_graph->addCustomItem(label);
     } else {
         resetSelection();
         m_graph->removeCustomItemAt(positionThree);
         m_graph->removeCustomItemAt(positionThreeLabel);
     }
 }

 void SurfaceGraphModifier::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 SurfaceGraphModifier::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 SurfaceGraphModifier::toggleShadows(bool shadows)
 {
     if (shadows)
         m_graph->setShadowQuality(QAbstract3DGraph::ShadowQuality::Medium);
     else
         m_graph->setShadowQuality(QAbstract3DGraph::ShadowQuality::None);
 }

 void SurfaceGraphModifier::toggleSurfaceTexture(bool enable)
 {
     if (enable)
         m_topography->setTextureFile(":/data/maptexture.jpg");
     else
         m_topography->setTextureFile("");
 }

 void SurfaceGraphModifier::handleElementSelected(QAbstract3DGraph::ElementType type)
 {
     resetSelection();
     if (type == QAbstract3DGraph::ElementType::CustomItem) {
         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::ElementType::Series) {
         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::ElementType::Series
                && type < QAbstract3DGraph::ElementType::CustomItem) {
         int index = m_graph->selectedLabelIndex();
         QString text;
         if (type == QAbstract3DGraph::ElementType::AxisXLabel)
             text.append("Axis X label: ");
         else if (type == QAbstract3DGraph::ElementType::AxisYLabel)
             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 SurfaceGraphModifier::resetSelection()
 {
     m_selectionAnimation->stop();
     if (m_previouslyAnimatedItem)
         m_previouslyAnimatedItem->setScaling(m_previousScaling);
     m_previouslyAnimatedItem = nullptr;
 }