Textured Surface Example

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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("");
 }