From a1119ae6ae31ca572fc9090d21176b5b30fd6037 Mon Sep 17 00:00:00 2001
From: Alvin Penner <penner@vaxxine.com>
Date: Wed, 4 Feb 2015 14:42:47 -0500
Subject: for grid spacing, reduce numerical error if viewbox and page are same
 size

(bzr r13900)
---
 src/display/canvas-grid.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/display/canvas-grid.cpp')

diff --git a/src/display/canvas-grid.cpp b/src/display/canvas-grid.cpp
index 0a43ed8b7..0f58096ce 100644
--- a/src/display/canvas-grid.cpp
+++ b/src/display/canvas-grid.cpp
@@ -547,6 +547,9 @@ CanvasXYGrid::readRepr()
         if (Geom::are_near(scale_x / scale_y, 1.0, Geom::EPSILON)) {
             // scaling is uniform, try to reduce numerical error
             scale_x = (scale_x + scale_y)/2.0;
+            double scale_none = Inkscape::Util::Quantity::convert(1, doc->getDisplayUnit(), "px");
+            if (Geom::are_near(scale_x / scale_none, 1.0, Geom::EPSILON))
+                scale_x = scale_none; // objects are same size, reduce numerical error
             scale_y = scale_x;
         }
     }
-- 
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