From: Daid <daid303@gmail.com>
Date: Sat, 31 Mar 2012 19:48:23 +0000 (+0200)
Subject: Small optimalization in gcode preview, saves a square root per line
X-Git-Tag: RC1~13
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=7d13b17dd99701dcab1107fbef47d4692bc3376e;p=cura.git

Small optimalization in gcode preview, saves a square root per line
---

diff --git a/Cura/gui/preview3d.py b/Cura/gui/preview3d.py
index e553198a..c27558bd 100644
--- a/Cura/gui/preview3d.py
+++ b/Cura/gui/preview3d.py
@@ -471,7 +471,7 @@ class PreviewGLCanvas(glcanvas.GLCanvas):
 								# Calculate line width from ePerDistance (needs layer thickness and filament diameter)
 								dist = (v0 - v1).vsize()
 								if dist > 0 and layerThickness > 0:
-									extrusionMMperDist = (v1.e - v0.e) / (v0 - v1).vsize()
+									extrusionMMperDist = (v1.e - v0.e) / dist
 									lineWidth = extrusionMMperDist * filamentArea / layerThickness / 2
 
 								normal = (v0 - v1).cross(util3d.Vector3(0,0,1))