refactor: improve Geant4 solid synchronization and update documentation for VTK integration

src/HEP/Geant/Solid.cpp

@@ -107,6 +107,8 @@ void Solid::SetTransform(Matrix4f transform) {
     }
 
     std::cout << "Solid " << GetName() << " position: " << pos << " rotation: " << m << std::endl;
+
+    this->Updated();
 }
 
 void Solid::SetParent(Solid *parent) {
@@ -181,11 +183,14 @@ void TessellatedSolid::Update() {
 BoxSolid::BoxSolid(const char *name) : 
     BaseClass(name), 
     m_ContainerBox(new ContainerBox()), 
-    m_Solid(new G4Box(name, 1, 1, 1))
-  {}
+    m_Solid(new G4Box(name, 0.5, 0.5, 0.5))
+  {
+    Object::connect(m_ContainerBox, &ContainerBox::Updated, this, &BoxSolid::Update);
+    Update();
+  }
 
 BoxSolid::BoxSolid(const char *name, ContainerBox *box) : BaseClass(name) {
-  m_Solid = new G4Box(name, 1, 1, 1);
+  m_Solid = new G4Box(name, 0.5, 0.5, 0.5);
   m_ContainerBox = box;
   Object::connect(box, &ContainerBox::Updated, this, &BoxSolid::Update);
   if (m_Logical) {

src/HEP/Geant/Solid.h

@@ -53,6 +53,7 @@ public:
   void SetMaterial(G4Material *material);
   
   void SetSizeUnit(const char *unit);
+  
   // Implementiamo SetParent qui, per tutti.
   virtual void SetParent(Solid *parent); 
 
@@ -71,11 +72,8 @@ public:
 
   template < typename Ar >
   void serialize(Ar &ar, const unsigned int version) {
-    ar & m_Name;
+    ar & boost::serialization::make_nvp("Name", m_Name);
   }
-    
-    
-
 
 protected:
 
@@ -123,6 +121,7 @@ public:
 
   BoxSolid(const char *name = "");
   BoxSolid(const char *name, ContainerBox *box);
+
   virtual G4VSolid* GetG4Solid() const override { return (G4VSolid*)m_Solid; }
   
   ContainerBox* GetObject() const { return m_ContainerBox; }

src/HEP/Geant/testing/SolidTest.cpp

@@ -25,6 +25,32 @@ int main() {
         TEST1(solid.GetMaterial()->GetName() == "G4_AIR");
     }
 
+    // Test BoxSolid //
+    {
+        Geant::BoxSolid boxsolid("test_boxsolid");
+        boxsolid.SetNistMaterial("G4_AIR");
+        TEST1(boxsolid.GetLogical() != nullptr);
+        // TEST1(boxsolid.GetSolid() != nullptr);
+    }
+
+    // Test BoxSolid with a container box //
+    {
+        ContainerBox box;
+        
+        // box.SetPosition(Vector3f(1,1,1));
+        // box.SetRotation(Rotation(Vector3f(0,1,0), 45_deg));
+        
+        Geant::BoxSolid boxsolid("test_boxsolid", &box);
+        boxsolid.SetNistMaterial("G4_AIR");
+        TEST1(boxsolid.GetLogical() != nullptr);
+        // TEST1(boxsolid.GetSolid() != nullptr);
+        // TEST1(boxsolid.GetSolid()->GetXHalfLength() == 0.5);
+        // TEST1(boxsolid.GetSolid()->GetYHalfLength() == 0.5);
+        // TEST1(boxsolid.GetSolid()->GetZHalfLength() == 0.5);
+
+        
+    }
+
     // Test TessellatedSolid with a simple mesh //
     {
         Geant::TessellatedSolid tsolid("test_tessellated");

src/Vtk/HEP/Geant/vtkBoxSolid.cpp

@@ -40,13 +40,15 @@ BoxSolid::~BoxSolid() {
 
 void BoxSolid::Update() {
   ConnectionBlock blocker(m_UpdateConnection);
-  this->UpdateGeometry();
-  // Ensure base Prop3D properties (color, opacity, etc) and transform are applied
+  // Ensure base GeantSolid logic (G4Polyhedron and Transform) runs
+  this->GeantSolid::Update();
+  // Ensure base Prop3D properties (color, opacity, etc) are applied
   this->Prop3D::Update();
 }
 
 void BoxSolid::SyncFromVtk() {
   this->Prop3D::SyncFromVtk();
+  
   if (auto* proxy = vtkProp3D::SafeDownCast(this->GetProxyProp())) {
       if (vtkMatrix4x4* mat = proxy->GetUserMatrix()) {
           m_BoxContent->SetTransform(VtkToMatrix4f(mat));
@@ -54,16 +56,6 @@ void BoxSolid::SyncFromVtk() {
   }
 }
 
-void BoxSolid::UpdateGeometry() {
-  // Sync geometry from G4VSolid provided by GeantSolid (tessellation)
-  GeantSolid::UpdateGeometry();
-}
-
-void BoxSolid::UpdateTransform() {
-  // Take transform from Prop3D base (which uses GetContent() -> ContainerBox TRS)
-  this->Prop3D::Update();
-}
-
 void BoxSolid::serialize_display(uLib::Archive::display_properties_archive &ar,
                                     const unsigned int version) {
   // Expose Geant solid properties and underlying Box/TRS properties

src/Vtk/HEP/Geant/vtkBoxSolid.h

@@ -49,8 +49,6 @@ public:
   virtual ~BoxSolid();
 
   virtual void Update() override;
-  virtual void UpdateGeometry() override;
-  virtual void UpdateTransform() override;
   virtual void SyncFromVtk() override;
 
   virtual uLib::Object *GetContent() const override {