add Qt viewport

app/gcompose/src/MainWindow.cpp

@@ -0,0 +1,15 @@
+#include "MainWindow.h"
+#include <Vtk/vtkQViewport.h>
+
+using namespace uLib;
+
+MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent) {
+    m_viewport = new Vtk::QViewport(this);
+    setCentralWidget(m_viewport);
+
+    setWindowTitle("gcompose - Qt VTK Interface");
+    resize(1200, 800);
+}
+
+MainWindow::~MainWindow() {
+}

app/gcompose/src/MainWindow.h

@@ -0,0 +1,25 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include <QVTKOpenGLNativeWidget.h>
+
+namespace uLib {
+namespace Vtk {
+class QViewport;
+}
+}
+
+class MainWindow : public QMainWindow {
+    Q_OBJECT
+public:
+    MainWindow(QWidget* parent = nullptr);
+    virtual ~MainWindow();
+
+    uLib::Vtk::QViewport* getViewport() { return m_viewport; }
+
+private:
+    uLib::Vtk::QViewport* m_viewport;
+};
+
+#endif

app/gcompose/src/main.cpp

@@ -1,11 +1,13 @@
+#include <QApplication>
+#include "MainWindow.h"
 
 #include "Math/ContainerBox.h"
 #include <HEP/Geant/Scene.h>
 #include "HEP/Detectors/DetectorChamber.h"
 #include "Vtk/HEP/Detectors/vtkDetectorChamber.h"
 
-#include <Vtk/uLibVtkViewer.h>
 #include <Vtk/vtkContainerBox.h>
+#include <Vtk/vtkQViewport.h>
 
 #include <vtkSmartPointer.h>
 #include <vtkCubeSource.h>
@@ -14,12 +16,15 @@
 #include <vtkRenderer.h>
 
 
+#include "Math/Units.h"
 #include <iostream>
 
 using namespace uLib;
+using namespace uLib::literals;
 
 int main(int argc, char** argv) {
-    std::cout << "Starting gcompose application..." << std::endl;
+    QApplication app(argc, argv);
+    std::cout << "Starting gcompose Qt application..." << std::endl;
 
     ContainerBox world_box(Vector3f(1, 1, 1));
     world_box.Scale(Vector3f(20_mm, 20_mm, 20_mm));
@@ -40,29 +45,23 @@ int main(int argc, char** argv) {
     scene.ConstructWorldBox(&world_box, "G4_AIR");
     scene.Initialize();
 
-    // 2. Initialize VTK Viewer
-    Vtk::Viewer viewer;
+    // 2. Initialize MainWindow (contains embedded VTK QViewport)
+    MainWindow window;
+    Vtk::QViewport* viewport = window.getViewport();
 
-    
     Vtk::vtkDetectorChamber vtk_d1(&d1);
-    viewer.AddPuppet(vtk_d1);
-    
-    Vtk::vtkDetectorChamber vtk_d2(&d2);
-    viewer.AddPuppet(vtk_d2);
-    
-    Vtk::vtkContainerBox vtk_box(&world_box);
-    viewer.AddPuppet(vtk_box);
+    viewport->AddPuppet(vtk_d1);
 
-    viewer.GetRenderer()->Render();
+    Vtk::vtkDetectorChamber vtk_d2(&d2);
+    viewport->AddPuppet(vtk_d2);
+
+    Vtk::vtkContainerBox vtk_box(&world_box);
+    viewport->AddPuppet(vtk_box);
+
+    viewport->ZoomAuto();
 
     std::cout << "Geant4 and VTK scenes are ready." << std::endl;
-    std::cout << "Starting VTK Interactor..." << std::endl;
-
-    // 3. Start VTK interactor (blocks until window is closed)
-    viewer.Start();
-
-    // 4. Clean up
-    std::cout << "Shutting down..." << std::endl;
-
-    return 0;
+    
+    window.show();
+    return app.exec();
 }