makes the hide/unhide apply immediately after you click

Author: Medyan-Naser

vtkext/private/module/vtkF3DImguiActor.cxx

@@ -415,6 +415,7 @@ void vtkF3DImguiActor::RenderNode(NodeInfo* node)
       NodeVisibilityState[node->prop] = visible;
       node->prop->SetVisibility(visible ? 1 : 0);
       node->prop->Modified();
+      this->RequestRender();
     }
 
     ImGui::PopID();

vtkext/private/module/vtkF3DImguiObserver.cxx

@@ -187,6 +187,11 @@ void vtkF3DImguiObserver::RenderUI(vtkRenderWindowInteractor* interactor)
   info->Set(vtkF3DRenderPass::RENDER_UI_ONLY(), 1);
   renWin->Render();
   info->Remove(vtkF3DRenderPass::RENDER_UI_ONLY());
+
+  if (ren->ConsumeUIRenderRequest())
+  {
+    renWin->Render();
+  }
 }
 
 //----------------------------------------------------------------------------

vtkext/private/module/vtkF3DRenderer.cxx

@@ -3468,9 +3468,14 @@ void vtkF3DRenderer::SetUIDeltaTime(double time)
   this->UIActor->SetDeltaTime(time);
 }
 
+//----------------------------------------------------------------------------
+bool vtkF3DRenderer::ConsumeUIRenderRequest()
+{
+  return this->UIActor->ConsumeRenderRequest();
+}
+
 //----------------------------------------------------------------------------
 void vtkF3DRenderer::SetConsoleBadgeEnabled(bool enabled)
 {
   this->UIActor->SetConsoleBadgeEnabled(enabled);
 }
-

vtkext/private/module/vtkF3DRenderer.h

@@ -489,6 +489,8 @@ class vtkF3DRenderer : public vtkOpenGLRenderer
    */
   void SetUIDeltaTime(double time);
 
+  bool ConsumeUIRenderRequest();
+
   /**
    * Set console badge enabled status
    */

vtkext/private/module/vtkF3DUIActor.cxx

@@ -12,6 +12,20 @@ vtkF3DUIActor::vtkF3DUIActor() = default;
 //----------------------------------------------------------------------------
 vtkF3DUIActor::~vtkF3DUIActor() = default;
 
+//----------------------------------------------------------------------------
+void vtkF3DUIActor::RequestRender()
+{
+  this->RenderRequested = true;
+}
+
+//----------------------------------------------------------------------------
+bool vtkF3DUIActor::ConsumeRenderRequest()
+{
+  const bool requested = this->RenderRequested;
+  this->RenderRequested = false;
+  return requested;
+}
+
 //----------------------------------------------------------------------------
 void vtkF3DUIActor::SetDropZoneVisibility(bool show)
 {

vtkext/private/module/vtkF3DUIActor.h

@@ -193,6 +193,9 @@ class vtkF3DUIActor : public vtkProp
   {
   }
 
+  void RequestRender();
+  bool ConsumeRenderRequest();
+
 protected:
   vtkF3DUIActor();
   ~vtkF3DUIActor() override;
@@ -322,6 +325,7 @@ class vtkF3DUIActor : public vtkProp
   void operator=(const vtkF3DUIActor&) = delete;
 
   bool Initialized = false;
+  bool RenderRequested = false;
 };
 
 #endif