Vizualizator centres the mesh into its view centre automatically:

even when it reads STL (not just after VTK import),
the same translation is used when loading mesh after GUI request.

src/main_Vizualizator.cpp

@@ -84,12 +84,12 @@ int main(int argc,char **argv)
 			std::cout << f << ": triangles #: " << mesh.Ftree[f].ID.size()/3 << "\n";
 			std::cout << f << ": normals   #: " << mesh.Ftree[f].norm.size() << "\n";
 		}
-
-		//position the mesh with its centre aligned with the scene centre
-		mesh.CenterMesh();
-		mesh.TranslateMesh(params.sceneCentre - (mesh.meshPlaygroundSize/2.0f - mesh.meshShift));
 	}
 
+	//position the mesh with its centre aligned with the scene centre
+	mesh.CenterMesh();
+	mesh.TranslateMesh(params.sceneCentre - (mesh.meshPlaygroundSize/2.0f - mesh.meshShift));
+
 	//display all the meshes
 	initializeGL();
 	loopGL();
@@ -189,6 +189,10 @@ bool LoadNewMesh(const char* path,const int ID,const int fileNo)
 	//remove last filopodium mesh (which is usually empty...)
 	mesh.DiscardLastEmptyFilopodiumObject();
 
+	//position the mesh with its centre aligned with the scene centre
+	//keep using the same translation (which had been determined in the main() at startup)
+	mesh.TranslateMesh(params.sceneCentre - (mesh.meshPlaygroundSize/2.0f - mesh.meshShift));
+
 	std::cout << "loaded mesh #" << fileNo << " (with " << filoNo-1 << " filopodia)\n";
 
 	//keep (by rotating) vertex positions