From f8ccc115ef3f593b4b44f5efbc7c79a276e8619d Mon Sep 17 00:00:00 2001
From: Anatoly Baksheev <no@email>
Date: Sun, 2 Feb 2014 22:08:18 +0400
Subject: [PATCH] proper render call order (fixes some issues with VTK6.1)

---
 modules/viz/src/interactor_style.cpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/modules/viz/src/interactor_style.cpp b/modules/viz/src/interactor_style.cpp
index 75003a2b6..7fa671448 100644
--- a/modules/viz/src/interactor_style.cpp
+++ b/modules/viz/src/interactor_style.cpp
@@ -366,7 +366,6 @@ void cv::viz::InteractorStyle::OnKeyDown()
             {
                 Interactor->GetRenderWindow()->SetSize(win_size_.val);
                 Interactor->GetRenderWindow()->SetPosition(win_pos_.val);
-                Interactor->GetRenderWindow()->Render();
                 Interactor->Render();
             }
             // Set to max
@@ -376,7 +375,6 @@ void cv::viz::InteractorStyle::OnKeyDown()
                 win_size_ = win_size;
 
                 Interactor->GetRenderWindow()->SetSize(screen_size.val);
-                Interactor->GetRenderWindow()->Render();
                 Interactor->Render();
                 max_win_size_ = Vec2i(Interactor->GetRenderWindow()->GetSize());
             }
@@ -417,7 +415,7 @@ void cv::viz::InteractorStyle::OnKeyDown()
     {
         vtkSmartPointer<vtkCamera> cam = CurrentRenderer->GetActiveCamera();
         cam->SetParallelProjection(!cam->GetParallelProjection());
-        CurrentRenderer->Render();
+        Interactor->Render();
         break;
     }
 
@@ -468,7 +466,7 @@ void cv::viz::InteractorStyle::OnKeyDown()
 
         CurrentRenderer->SetActiveCamera(cam);
         CurrentRenderer->ResetCameraClippingRange();
-        CurrentRenderer->Render();
+        Interactor->Render();
         break;
     }
 
@@ -594,7 +592,6 @@ void cv::viz::InteractorStyle::OnMouseWheelForward()
         cam->Modified();
         CurrentRenderer->ResetCameraClippingRange();
         CurrentRenderer->Modified();
-        CurrentRenderer->Render();
         Interactor->Render();
     }
     else
@@ -624,7 +621,6 @@ void cv::viz::InteractorStyle::OnMouseWheelBackward()
         cam->Modified();
         CurrentRenderer->ResetCameraClippingRange();
         CurrentRenderer->Modified();
-        CurrentRenderer->Render();
         Interactor->Render();
     }
     else