surfacegraph.cpp Example File

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  #include "surfacegraph.h"
  #include "topographicseries.h"

  #include <QtDataVisualization/QValue3DAxis>
  #include <QtDataVisualization/Q3DTheme>

  using namespace QtDataVisualization;

  const float areaWidth = 8000.0f;
  const float areaHeight = 8000.0f;
  const float aspectRatio = 0.1389f;
  const float minRange = areaWidth * 0.49f;

  SurfaceGraph::SurfaceGraph(Q3DSurface *surface)
      : m_graph(surface)
  {
      m_graph->setAxisX(new QValue3DAxis);
      m_graph->setAxisY(new QValue3DAxis);
      m_graph->setAxisZ(new QValue3DAxis);
      m_graph->axisX()->setLabelFormat("%i");
      m_graph->axisZ()->setLabelFormat("%i");
      m_graph->axisX()->setRange(0.0f, areaWidth);
      m_graph->axisY()->setRange(100.0f, areaWidth * aspectRatio);
      m_graph->axisZ()->setRange(0.0f, areaHeight);
      m_graph->axisX()->setLabelAutoRotation(30);
      m_graph->axisY()->setLabelAutoRotation(90);
      m_graph->axisZ()->setLabelAutoRotation(30);
      m_graph->activeTheme()->setType(Q3DTheme::ThemePrimaryColors);

      QFont font = m_graph->activeTheme()->font();
      font.setPointSize(20);
      m_graph->activeTheme()->setFont(font);

      m_topography = new TopographicSeries();
      m_topography->setTopographyFile(":/maps/topography", areaWidth, areaHeight);
      m_topography->setItemLabelFormat(QStringLiteral("@yLabel m"));

      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_graph->addSeries(m_topography);
      m_graph->addSeries(m_highlight);

      m_inputHandler = new CustomInputHandler(m_graph);
      m_inputHandler->setHighlightSeries(m_highlight);
      m_inputHandler->setAxes(m_graph->axisX(), m_graph->axisY(), m_graph->axisZ());
      m_inputHandler->setLimits(0.0f, areaWidth, minRange);
      m_inputHandler->setAspectRatio(aspectRatio);

      m_graph->setActiveInputHandler(m_inputHandler);
  }

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

  void SurfaceGraph::toggleSurfaceTexture(bool enable)
  {
      if (enable)
          m_topography->setTextureFile(":/maps/maptexture");
      else
          m_topography->setTextureFile("");
  }