Prevent pie slice outlines from being drawn when the stroke width is zero (issue 585)

NEWS.txt

@@ -39,20 +39,29 @@ Bug fixes
 
 - Fix problem with null values and pie plugin (patch by gcruxifix,
   issue 500).
+
 - Fix problem with threshold plugin and bars (based on patch by
   kaarlenkaski, issue 348).
+
 - Fix axis box calculations so the boxes include the outermost part of
   the labels too.
+
 - Fix problem with event clicking and hovering in IE 8 by updating
   Excanvas and removing previous work-around (test case by Ara
   Anjargolian).
+
 - Fix issues with blurry 1px border when some measures aren't integer
   (reported by Ara Anjargolian).
+
 - Fix bug with formats in the data processor (reported by Peter Hull,
   issue 534).
+
 - Prevent i from being declared global in extractRange (reported by
   Alexander Obukhov, issue 627).
 
+- Prevent pie slice outlines from being drawn when the stroke width is
+  zero (reported by Chris Minett, issue 585)
+
 
 Flot 0.7
 --------

jquery.flot.pie.js

@@ -347,13 +347,13 @@ More detail and specific examples can be found in the included HTML file.
 			
 			function drawPie()
 			{
-				startAngle = Math.PI*options.series.pie.startAngle;
+				var startAngle = Math.PI * options.series.pie.startAngle;
+				var radius;
 
 				// set radius
-				if (options.series.pie.radius>1)
-					var radius = options.series.pie.radius;
-				else
-					var radius = maxRadius * options.series.pie.radius;
+				if (options.series.pie.radius > 1)
+					radius = options.series.pie.radius;
+				else radius = maxRadius * options.series.pie.radius;
 
 				// center and rotate to starting position
 				ctx.save();
@@ -372,12 +372,15 @@ More detail and specific examples can be found in the included HTML file.
 				ctx.restore();
 
 				// draw slice outlines
+
+				if (options.series.pie.stroke.width > 0) {
 					ctx.save();
 					ctx.lineWidth = options.series.pie.stroke.width;
 					currentAngle = startAngle;
 					for (var i = 0; i < slices.length; ++i)
 						drawSlice(slices[i].angle, options.series.pie.stroke.color, false);
 					ctx.restore();
+				}
 
 				// draw donut hole
 				drawDonutHole(ctx);