From 5606395f831825d448f3629adeb41cf4489202bd Mon Sep 17 00:00:00 2001
From: rnv <rnv@opencascade.com>
Date: Thu, 14 Sep 2017 18:25:22 +0300
Subject: [PATCH] Fix for '54311: Ugly representation in the VTK Viewer after
 creation of the ParaView Viewer' issue.

---
 src/SVTK/SVTK_DeviceActor.cxx     |  4 ++--
 src/VTKViewer/VTKViewer_Actor.cxx | 17 +++++++++++++++--
 src/VTKViewer/VTKViewer_Actor.h   |  6 ++++++
 3 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/src/SVTK/SVTK_DeviceActor.cxx b/src/SVTK/SVTK_DeviceActor.cxx
index efa906100..8fefd95a8 100644
--- a/src/SVTK/SVTK_DeviceActor.cxx
+++ b/src/SVTK/SVTK_DeviceActor.cxx
@@ -62,8 +62,8 @@ SVTK_DeviceActor
   myRepresentation = VTKViewer::Representation::Surface;
 
   myIsResolveCoincidentTopology = true;
-  vtkMapper::GetResolveCoincidentTopologyPolygonOffsetParameters(myPolygonOffsetFactor,
-                                                                 myPolygonOffsetUnits);
+  VTKViewer_Actor::GetDefaultPolygonOffsetParameters(myPolygonOffsetFactor,
+                                                     myPolygonOffsetUnits);
 
   myMapper = VTKViewer_DataSetMapper::New();
 
diff --git a/src/VTKViewer/VTKViewer_Actor.cxx b/src/VTKViewer/VTKViewer_Actor.cxx
index 76f5d153b..56312d57d 100755
--- a/src/VTKViewer/VTKViewer_Actor.cxx
+++ b/src/VTKViewer/VTKViewer_Actor.cxx
@@ -74,8 +74,8 @@ VTKViewer_Actor
   myIsPreselected(false),
   myIsHighlighted(false)
 {
-  vtkMapper::GetResolveCoincidentTopologyPolygonOffsetParameters(myPolygonOffsetFactor,
-                                                                 myPolygonOffsetUnits);
+  VTKViewer_Actor::GetDefaultPolygonOffsetParameters(myPolygonOffsetFactor,
+						     myPolygonOffsetUnits);
 
   for(int i = 0; i < 6; i++)
     myPassFilter.push_back(vtkPassThroughFilter::New());
@@ -273,6 +273,19 @@ VTKViewer_Actor
   units = myPolygonOffsetUnits;
 }
 
+/*!
+  Get polygon offset parameters
+  \param factor, units  - Opengl polygon offset parameters
+*/
+void
+VTKViewer_Actor
+::GetDefaultPolygonOffsetParameters(double& factor, 
+				    double& units)
+{
+  factor = 2.0;
+  units = 2.0;
+}
+
 /*!
   \return shrink factor
 */
diff --git a/src/VTKViewer/VTKViewer_Actor.h b/src/VTKViewer/VTKViewer_Actor.h
index e09c1e3e5..306578bec 100755
--- a/src/VTKViewer/VTKViewer_Actor.h
+++ b/src/VTKViewer/VTKViewer_Actor.h
@@ -257,6 +257,12 @@ class VTKVIEWER_EXPORT VTKViewer_Actor : public vtkLODActor
   void
   GetPolygonOffsetParameters(double& factor, 
                              double& units);
+  
+  //! Get default ResolveCoincidentTopology parameters
+  static 
+  void
+  GetDefaultPolygonOffsetParameters(double& factor, 
+				    double& units);
 
   virtual
   void
-- 
2.39.2