From 87f9baa6b7fed6da8118812bd7d8656b6e972add Mon Sep 17 00:00:00 2001
From: Dan Lipsa <dan.lipsa@kitware.com>
Date: Mon, 12 Sep 2016 16:47:18 -0400
Subject: [PATCH] Shift quad position with one pixel to fix multiLineText test.
---
Rendering/Core/vtkTextMapper.cxx | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/Rendering/Core/vtkTextMapper.cxx b/Rendering/Core/vtkTextMapper.cxx
index ff358355fd2..bb5b2b7fe7b 100644
--- a/Rendering/Core/vtkTextMapper.cxx
+++ b/Rendering/Core/vtkTextMapper.cxx
@@ -505,17 +505,19 @@ void vtkTextMapper::UpdateQuad(vtkActor2D *actor, int dpi)
text_bbox[0] = 0;
text_bbox[2] = 0;
}
-
+ // adjust the quad so that the anchor point and a point with the same
+ // coordinates fall on the same pixel.
+ double shiftPixel = 1;
double x = static_cast<double>(text_bbox[0]);
double y = static_cast<double>(text_bbox[2]);
double w = static_cast<double>(this->TextDims[0]);
double h = static_cast<double>(this->TextDims[1]);
this->Points->Reset();
- this->Points->InsertNextPoint(x, y, 0.);
- this->Points->InsertNextPoint(x, y + h, 0.);
- this->Points->InsertNextPoint(x + w, y + h, 0.);
- this->Points->InsertNextPoint(x + w, y, 0.);
+ this->Points->InsertNextPoint(x - shiftPixel, y - shiftPixel, 0.);
+ this->Points->InsertNextPoint(x - shiftPixel, y + h - shiftPixel, 0.);
+ this->Points->InsertNextPoint(x + w - shiftPixel, y + h - shiftPixel, 0.);
+ this->Points->InsertNextPoint(x + w - shiftPixel, y - shiftPixel, 0.);
this->CoordsTime.Modified();
}
}
--
GitLab