Qt 5.6 | Qt 3D | Qt 3D: Dynamic Scene C++ Example | main.cpp Example File

Qt 5.6.3 Reference Documentation

# main.cpp Example File

dynamicscene-cpp/main.cpp

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      #include <QGuiApplication>

      #include <window.h>
      #include <Qt3DCore/QAspectEngine>
      #include <Qt3DCore/QCamera>

      #include <Qt3DInput/QInputAspect>

      #include <Qt3DRender/QRenderAspect>
      #include <Qt3DRender/QFrameGraph>
      #include <Qt3DRender/QForwardRenderer>

      #include "forwardrenderer.h"
      #include "examplescene.h"

      int main(int argc, char* argv[])
      {
          QGuiApplication app(argc, argv);

          Window view;
          Qt3DCore::QAspectEngine engine;
          engine.registerAspect(new Qt3DRender::QRenderAspect());
          Qt3DInput::QInputAspect *input = new Qt3DInput::QInputAspect;
          engine.registerAspect(input);
          QVariantMap data;
          data.insert(QStringLiteral("surface"), QVariant::fromValue(static_cast<QSurface *>(&view)));
          data.insert(QStringLiteral("eventSource"), QVariant::fromValue(&view));
          engine.setData(data);

          ExampleScene *sceneRoot = new ExampleScene();

          // Scene Camera
          Qt3DCore::QCamera *basicCamera = new Qt3DCore::QCamera(sceneRoot);
          basicCamera->setProjectionType(Qt3DCore::QCameraLens::PerspectiveProjection);
          basicCamera->setAspectRatio(view.width() / view.height());
          basicCamera->setUpVector(QVector3D(0.0f, 1.0f, 0.0f));
          basicCamera->setViewCenter(QVector3D(0.0f, 3.5f, 0.0f));
          basicCamera->setPosition(QVector3D(0.0f, 3.5f, 25.0f));
          // For camera controls
          input->setCamera(basicCamera);

          // Forward Renderer FrameGraph
          Qt3DRender::QFrameGraph *frameGraph = new Qt3DRender::QFrameGraph(sceneRoot);
          Qt3DRender::QForwardRenderer *forwardRenderer = new Qt3DRender::QForwardRenderer();
          forwardRenderer->setCamera(basicCamera);
          frameGraph->setActiveFrameGraph(forwardRenderer);
          sceneRoot->addComponent(frameGraph);

          engine.setRootEntity(sceneRoot);
          view.show();

          return app.exec();
      }