Use TransformCoordinateUseDouble to fix border box

It fixes most of the border box on all the graphic cards.
By using an offset to the points, we ensure that we draw the pixels in
the right column/row.

Libs/Visualization/VTK/Core/vtkLightBoxRendererManager.cpp

@@ -157,21 +157,24 @@ void RenderWindowItem::SetupHighlightedBoxActor(const double highlightedBoxColor
   //     |       |       |       |       |       |       |
   //  V  +-------+-------+-------+-------+-------+-------+
   //     <  1px  >  -1       0       1       2       3
-  // It seems that it's the bottom pixel line that is drawn.
-  // We will then shift the actor to have the correct behavior.
-  points->InsertNextPoint(0., 0., 0); // bottom-left
-  points->InsertNextPoint(1., 0., 0); // bottom-right
-  points->InsertNextPoint(1., 1., 0); // top-right
-  points->InsertNextPoint(0., 1., 0); // top-left
-  points->InsertNextPoint(0., -0.1, 0); // bottom-left to fill the 0,0 pixel.
+  // It depends of the graphic card, this is why we need to add an offset.
+  // 0.0002 seems to work for most of the window sizes.
+  double shift = 0.0002;
+  points->InsertNextPoint(0. + shift, 0. + shift, 0); // bottom-left
+  points->InsertNextPoint(1. + shift, 0. + shift, 0); // bottom-right
+  points->InsertNextPoint(1. + shift, 1. + shift + 0.1, 0); // top-right to fill the 1,1 pixel
+  points->InsertNextPoint(1. + shift, 1. + shift, 0); // top-right
+  points->InsertNextPoint(0. + shift, 1. + shift, 0); // top-left
+  points->InsertNextPoint(0. + shift, 0. + shift - 0.1, 0); // bottom-left to fill the 0,0 pixel.
   
   VTK_CREATE(vtkCellArray, cells);
-  cells->InsertNextCell(5);
+  cells->InsertNextCell(6);
   cells->InsertCellPoint(0);
   cells->InsertCellPoint(1);
   cells->InsertCellPoint(2);
   cells->InsertCellPoint(3);
   cells->InsertCellPoint(4);
+  cells->InsertCellPoint(5);
   poly->SetPoints(points);
   poly->SetLines(cells);
 
@@ -182,15 +185,14 @@ void RenderWindowItem::SetupHighlightedBoxActor(const double highlightedBoxColor
   VTK_CREATE(vtkPolyDataMapper2D, polyDataMapper);
   polyDataMapper->SetInput(poly);
   polyDataMapper->SetTransformCoordinate(coordinate);
+  polyDataMapper->SetTransformCoordinateUseDouble(true);
 
   this->HighlightedBoxActor = vtkSmartPointer<vtkActor2D>::New();
-  // Shift the box for the reason explained earlier
-  this->HighlightedBoxActor->SetPosition(1.,1.);
   this->HighlightedBoxActor->SetMapper(polyDataMapper);
-  this->HighlightedBoxActor->GetProperty()->SetColor(
-      highlightedBoxColor[0], highlightedBoxColor[1], highlightedBoxColor[2]); // Default to green
+  this->HighlightedBoxActor->GetProperty()->SetColor(highlightedBoxColor[0],
+                                                     highlightedBoxColor[1],
+                                                     highlightedBoxColor[2]);
   this->HighlightedBoxActor->GetProperty()->SetDisplayLocationToForeground();
-  // Border of 1 pixels (increments go 2 by 2)
   this->HighlightedBoxActor->GetProperty()->SetLineWidth(1.0f);
   this->HighlightedBoxActor->SetVisibility(visible);