From: daid <daid303@gmail.com>
Date: Fri, 6 Jul 2012 12:59:03 +0000 (+0200)
Subject: Only draw layers up to the point where it takes less then 100ms to draw them. To... 
X-Git-Tag: 12.07~6
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=750ed6de6771feacc2d11bbb0e9d4dddb0b4dd8b;p=cura.git

Only draw layers up to the point where it takes less then 100ms to draw them. To avoid severe slowdown on slow machines.
---

diff --git a/Cura/gui/preview3d.py b/Cura/gui/preview3d.py
index 846017ac..abe34f51 100644
--- a/Cura/gui/preview3d.py
+++ b/Cura/gui/preview3d.py
@@ -446,7 +446,8 @@ class PreviewGLCanvas(glcanvas.GLCanvas):
 			glEnable(GL_COLOR_MATERIAL)
 			glEnable(GL_LIGHTING)
 			drawUpToLayer = min(self.gcodeDisplayListMade, self.parent.layerSpin.GetValue() + 1)
-			for i in xrange(0, drawUpToLayer):
+			starttime = time.time()
+			for i in xrange(drawUpToLayer - 1, -1, -1):
 				c = 1.0
 				if i < self.parent.layerSpin.GetValue():
 					c = 0.9 - (drawUpToLayer - i) * 0.1
@@ -457,6 +458,8 @@ class PreviewGLCanvas(glcanvas.GLCanvas):
 				glLightfv(GL_LIGHT0, GL_DIFFUSE, [0,0,0,0])
 				glLightfv(GL_LIGHT0, GL_AMBIENT, [c,c,c,c])
 				glCallList(self.gcodeDisplayList + i)
+				if time.time() - starttime > 0.1:
+					break
 			glDisable(GL_LIGHTING)
 			glDisable(GL_COLOR_MATERIAL)
 			glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, [0.2, 0.2, 0.2, 1.0]);