ANARI: Exposed factory for external apps

Rendering/ANARI/vtkAnariPass.cxx

@@ -261,6 +261,12 @@ vtkAnariRenderer* vtkAnariPass::GetAnariRenderer()
   return this->Internal->Renderer;
 }
 
+// ----------------------------------------------------------------------------
+vtkViewNodeFactory* vtkAnariPass::GetViewNodeFactory()
+{
+  return this->Internal->Factory;
+}
+
 // ----------------------------------------------------------------------------
 vtkAnariPass::vtkAnariPass()
 {

Rendering/ANARI/vtkAnariPass.h

@@ -34,6 +34,7 @@ VTK_ABI_NAMESPACE_BEGIN
 class vtkAnariPassInternals;
 class vtkAnariSceneGraph;
 class vtkCameraPass;
+class vtkViewNodeFactory;
 
 class VTKRENDERINGANARI_EXPORT vtkAnariPass : public vtkRenderPass
 {
@@ -66,6 +67,12 @@ public:
    */
   vtkAnariRenderer* GetAnariRenderer();
 
+  /**
+   * Make the factory available to apps that need to replace object(s) in VTK with
+   * their own at runtime (e.g. VisIt).
+   */
+  virtual vtkViewNodeFactory* GetViewNodeFactory();
+
 private:
   /**
    * Default constructor.