Bug fix for segfault iss #1795

library/src/interactor_impl.cxx

@@ -570,7 +570,12 @@ interactor_impl::interactor_impl(options& options, window_impl& window, scene_im
 }
 
 //----------------------------------------------------------------------------
-interactor_impl::~interactor_impl() = default;
+interactor_impl::~interactor_impl()
+{
+  vtkOutputWindow::GetInstance()->RemoveObservers(vtkF3DConsoleOutputWindow::TriggerEvent);
+  vtkOutputWindow::GetInstance()->RemoveObservers(vtkF3DConsoleOutputWindow::ShowEvent);
+  vtkOutputWindow::GetInstance()->RemoveObservers(vtkF3DConsoleOutputWindow::HideEvent);
+}
 
 //----------------------------------------------------------------------------
 interactor& interactor_impl::initCommands()

library/testing/CMakeLists.txt

@@ -49,6 +49,12 @@ if(VTK_VERSION VERSION_GREATER_EQUAL 9.2.20230426)
     )
 endif()
 
+if (VTK_VERSION VERSION_GREATER 9.2.6)
+    list(APPEND libf3dSDKTests_list
+        TestSDKEngineRecreation.cxx
+        )
+endif()
+
 # Invalid scene codepath needs https://gitlab.kitware.com/vtk/vtk/-/merge_requests/11287
 # Merge with TestSDKScene.cxx when VTK 9.4.0 is required.
 if(VTK_VERSION VERSION_GREATER_EQUAL 9.3.20240707)

library/testing/TestSDKEngineRecreation.cxx

@@ -0,0 +1,16 @@
+#include <engine.h>
+#include <interactor.h>
+
+int TestSDKEngineRecreation(int argc, char* argv[])
+{
+  std::string filename = "TestSDKEngineRecreation";
+  std::string interactionFilePath = std::string(argv[1]) + "/recordings/" + filename + ".log";
+  auto eng = std::make_unique<f3d::engine>(f3d::engine::create(false));
+  eng = nullptr;
+  for (int i = 0; i < 5; i++)
+  {
+    auto eng2 = std::make_unique<f3d::engine>(f3d::engine::create(false));
+    eng2->getInteractor().playInteraction(interactionFilePath);
+  }
+  return EXIT_SUCCESS;
+}

testing/recordings/TestSDKEngineRecreation.log

@@ -0,0 +1,17 @@
+# StreamVersion 1.2
+ExposeEvent 0 599 0 0 0 0 0
+RenderEvent 0 599 0 0 0 0 0
+TimerEvent 0 599 0 0 0 0 0
+KeyPressEvent 103 471 0 27 1 Escape 0
+CharEvent 103 471 0 27 1 Escape 0
+TimerEvent 103 471 0 27 1 Escape 0
+KeyReleaseEvent 103 471 0 27 1 Escape 0
+TimerEvent 103 471 0 27 1 Escape 0
+TimerEvent 103 471 0 27 1 Escape 0
+KeyPressEvent 103 471 0 27 1 Escape 0
+CharEvent 103 471 0 27 1 Escape 0
+TimerEvent 103 471 0 27 1 Escape 0
+TimerEvent 103 471 0 27 1 Escape 0
+KeyReleaseEvent 103 471 0 27 1 Escape 0
+TimerEvent 103 471 0 27 1 Escape 0
+TimerEvent 103 471 0 27 1 Escape 0