From 6a6506b02dcf4fd4c1198dbfe095a2fcfd55611f Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@intel.com>
Date: Wed, 22 Aug 2018 15:39:14 +0300
Subject: [PATCH] viz: call "mapper->Update()" before and after SetInputData()

---
 modules/viz/src/widget.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/viz/src/widget.cpp b/modules/viz/src/widget.cpp
index ce933ed0d8..6c2789f895 100644
--- a/modules/viz/src/widget.cpp
+++ b/modules/viz/src/widget.cpp
@@ -301,6 +301,7 @@ void cv::viz::Widget3D::applyTransform(const Affine3d &transform)
     vtkSmartPointer<vtkPolyDataMapper> mapper = vtkPolyDataMapper::SafeDownCast(actor->GetMapper());
     CV_Assert("Widget doesn't have a polydata mapper" && mapper);
 
+    mapper->Update(); // #10945
     VtkUtils::SetInputData(mapper, VtkUtils::TransformPolydata(mapper->GetInput(), transform));
     mapper->Update();
 }