fix display of cylinder

src/Vtk/Math/vtkCylinder.cpp

@@ -55,17 +55,12 @@ void vtkCylinder::contentUpdate() {
   vtkProp3D* root = vtkProp3D::SafeDownCast(this->GetProp());
   if (!root) return;
 
-  // 1. Placement (Position/Rotation/Model-level Scale) goes to the root prop
-  vtkMatrix4x4* vmat = root->GetUserMatrix();
-  if (!vmat) {
-    vtkNew<vtkMatrix4x4> mat;
-    root->SetUserMatrix(mat);
-    vmat = mat;
-  }
-  Matrix4f transform = m_Content->GetMatrix();
-  Matrix4fToVtk(transform, vmat);
+  // 1. Placement handled by base Puppet class via Sync / Update logic
+  // Update internal pd->m_Transform from content
+  Puppet::Update();
 
   // 2. Shape-local properties (Radius, Height, Axis alignment) go to the internal actor
+  // These are relative to the root assembly
   vtkTransform* alignment = vtkTransform::SafeDownCast(m_Actor->GetUserTransform());
   if (alignment) {
       alignment->Identity();
@@ -83,23 +78,29 @@ void vtkCylinder::contentUpdate() {
   }
 
   root->Modified();
-  Puppet::Update();
 }
 
 void vtkCylinder::Update() {
+  this->contentUpdate();
+}
+
+void vtkCylinder::SyncFromVtk() {
   if (!m_Content) return;
-
-  vtkProp3D* root = vtkProp3D::SafeDownCast(this->GetProp());
-  if (!root) return;
-
-  vtkMatrix4x4* vmat = root->GetUserMatrix();
-  if (!vmat) return;
   
-  // Pull the placement matrix directly from VTK
-  Matrix4f transform = VtkToMatrix4f(vmat);
-  m_Content->SetMatrix(transform);
+  vtkProp3D* assembly = vtkProp3D::SafeDownCast(this->GetProp());
+  if (!assembly) return;
 
-  m_Content->Updated();
+  double pos[3], ori[3], scale[3];
+  assembly->GetPosition(pos);
+  assembly->GetOrientation(ori);
+  assembly->GetScale(scale);
+  
+  m_Content->SetPosition(Vector3f(pos[0], pos[1], pos[2]));
+  // Convert VTK degrees to model radians
+  m_Content->SetOrientation(Vector3f(ori[0], ori[1], ori[2]) * CLHEP::degree);
+  m_Content->SetScale(Vector3f(scale[0], scale[1], scale[2]));
+  
+  m_Content->Updated(); // Notify change
 }
 
 void vtkCylinder::InstallPipe() {