Qt 5.8 | Qt Data Visualization | Axis Range Dragging With Labels Example | data.cpp Example File

Qt 5.8.0 Reference Documentation

# data.cpp Example File

draggableaxes/data.cpp

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      ** Contact: https://www.qt.io/licensing/
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      ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
      **
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      #include "data.h"

      #include <QtDataVisualization/QScatterDataProxy>
      #include <QtDataVisualization/Q3DScene>
      #include <QtDataVisualization/Q3DCamera>
      #include <QtDataVisualization/QScatter3DSeries>
      #include <QtDataVisualization/Q3DTheme>

      using namespace QtDataVisualization;

      const int itemCount = 500;

      Data::Data(Q3DScatter *scatter)
          : m_graph(scatter),
            m_inputHandler(new AxesInputHandler(scatter)),
            m_autoAdjust(false)
      {
          m_graph->activeTheme()->setType(Q3DTheme::ThemeEbony);
          m_graph->activeTheme()->setLabelBorderEnabled(true);
          m_graph->activeTheme()->setLabelBackgroundColor(QColor(QRgb(0x151550)));
          m_graph->activeTheme()->setLabelTextColor(Qt::lightGray);
          m_graph->activeTheme()->setFont(QFont("Arial Black", 30));
          m_graph->setShadowQuality(QAbstract3DGraph::ShadowQualityMedium);
          m_graph->scene()->activeCamera()->setCameraPreset(Q3DCamera::CameraPresetIsometricRight);

          m_graph->axisX()->setRange(-20.0f, 20.0f);
          m_graph->axisY()->setRange(-10.0f, 10.0f);
          m_graph->axisZ()->setRange(-20.0f, 20.0f);

          // Give ownership of the handler to the graph and make it the active handler
          m_graph->setActiveInputHandler(m_inputHandler);

          // Give our axes to the input handler
          m_inputHandler->setAxes(m_graph->axisX(), m_graph->axisZ(), m_graph->axisY());

          addData();
      }

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

      void Data::toggleRanges()
      {
          if (!m_autoAdjust) {
              m_graph->axisX()->setAutoAdjustRange(true);
              m_graph->axisZ()->setAutoAdjustRange(true);
              m_graph->axisY()->setAutoAdjustRange(true);
              m_inputHandler->setDragSpeedModifier(1.5f);
              m_autoAdjust = true;
          } else {
              m_graph->axisX()->setRange(-20.0f, 20.0f);
              m_graph->axisY()->setRange(-10.0f, 10.0f);
              m_graph->axisZ()->setRange(-20.0f, 20.0f);
              m_inputHandler->setDragSpeedModifier(15.0f);
              m_autoAdjust = false;
          }
      }

      void Data::addData()
      {
          QScatter3DSeries *series = new QScatter3DSeries;
          series->setMesh(QAbstract3DSeries::MeshCube);
          series->setMeshSmooth(true);
          m_graph->addSeries(series);

          QScatter3DSeries *series2 = new QScatter3DSeries;
          series2->setMesh(QAbstract3DSeries::MeshMinimal);
          series2->setMeshSmooth(true);
          m_graph->addSeries(series2);

          QScatter3DSeries *series3 = new QScatter3DSeries;
          series3->setMesh(QAbstract3DSeries::MeshSphere);
          series3->setMeshSmooth(true);
          m_graph->addSeries(series3);

          QScatter3DSeries *series4 = new QScatter3DSeries;
          series4->setMesh(QAbstract3DSeries::MeshBevelCube);
          series4->setMeshSmooth(true);
          m_graph->addSeries(series4);

          QScatter3DSeries *series5 = new QScatter3DSeries;
          series5->setMesh(QAbstract3DSeries::MeshSphere);
          m_graph->addSeries(series5);

          QScatterDataArray *dataArray = new QScatterDataArray;
          dataArray->resize(itemCount);
          QScatterDataItem *ptrToDataArray = &dataArray->first();
          for (int i = 0; i < itemCount; i++) {
              ptrToDataArray->setPosition(randVector());
              ptrToDataArray++;
          }
          QScatterDataArray *dataArray2 = new QScatterDataArray;
          dataArray2->resize(itemCount);
          ptrToDataArray = &dataArray2->first();
          for (int i = 0; i < itemCount; i++) {
              ptrToDataArray->setPosition(randVector());
              ptrToDataArray++;
          }
          QScatterDataArray *dataArray3 = new QScatterDataArray;
          dataArray3->resize(itemCount);
          ptrToDataArray = &dataArray3->first();
          for (int i = 0; i < itemCount; i++) {
              ptrToDataArray->setPosition(randVector());
              ptrToDataArray++;
          }
          QScatterDataArray *dataArray4 = new QScatterDataArray;
          dataArray4->resize(itemCount);
          ptrToDataArray = &dataArray4->first();
          for (int i = 0; i < itemCount; i++) {
              ptrToDataArray->setPosition(randVector());
              ptrToDataArray++;
          }
          QScatterDataArray *dataArray5 = new QScatterDataArray;
          dataArray5->resize(itemCount);
          ptrToDataArray = &dataArray5->first();
          for (int i = 0; i < itemCount; i++) {
              ptrToDataArray->setPosition(randVector());
              ptrToDataArray++;
          }

          m_graph->seriesList().at(0)->dataProxy()->resetArray(dataArray);
          m_graph->seriesList().at(1)->dataProxy()->resetArray(dataArray2);
          m_graph->seriesList().at(2)->dataProxy()->resetArray(dataArray3);
          m_graph->seriesList().at(3)->dataProxy()->resetArray(dataArray4);
          m_graph->seriesList().at(4)->dataProxy()->resetArray(dataArray5);
      }

      QVector3D Data::randVector()
      {
          return QVector3D(
                      (float)(rand() % 100) / 2.0f - (float)(rand() % 100) / 2.0f,
                      (float)(rand() % 100) / 2.0f - (float)(rand() % 100) / 2.0f,
                      (float)(rand() % 100) / 2.0f - (float)(rand() % 100) / 2.0f);
      }