feat: add Preferences dialog for managing theme, rendering, and unit settings

src/Vtk/vtkQViewport.h

@@ -4,6 +4,7 @@
 #include <QWidget>
 #include <QVTKOpenGLNativeWidget.h>
 #include <QPushButton>
+#include <QTimer>
 
 #include <vtkCornerAnnotation.h>
 #include <vtkOrientationMarkerWidget.h>
@@ -39,27 +40,35 @@ public:
     // Render scene
     virtual void Render() override;
 
+    void SetThrottledRendering(bool enabled) { m_throttledRendering = enabled; }
+    bool GetThrottledRendering() const { return m_throttledRendering; }
+
     // Direct access to VTK internals
     virtual vtkRenderWindow*            GetRenderWindow() override;
     virtual vtkRenderWindowInteractor*  GetInteractor() override;
     QVTKOpenGLNativeWidget*     GetWidget()      { return m_VtkWidget; }
 
     virtual void OnSelectionChanged(Prop3D* p) override;
+ 
+ protected:
+     virtual void resizeEvent(QResizeEvent* event) override;
+ 
+ private slots:
+     void onGridButtonClicked();
+     void onProjButtonClicked();
+     void doRender();
+ 
+ private:
+     void SetupPipeline();
+ 
+     QVTKOpenGLNativeWidget*             m_VtkWidget;
+     QPushButton*                        m_GridButton;
+     QPushButton*                        m_ProjButton;
+     QTimer*                             m_renderTimer;
+     bool                                m_renderPending = false;
+     bool                                m_throttledRendering = true;
+ };
 
-protected:
-    virtual void resizeEvent(QResizeEvent* event) override;
-
-private slots:
-    void onGridButtonClicked();
-    void onProjButtonClicked();
-
-private:
-    void SetupPipeline();
-
-    QVTKOpenGLNativeWidget*             m_VtkWidget;
-    QPushButton*                        m_GridButton;
-    QPushButton*                        m_ProjButton;
-};
 
 } // namespace Vtk
 } // namespace uLib