From 2cfe384d570f4c997ba2b0f75d463c7a4395792a Mon Sep 17 00:00:00 2001
From: Cat Sync <catsync@zdh.com>
Date: Sun, 5 Aug 2012 16:58:27 -0400
Subject: [PATCH] Fix for polygon bounding box being offset (issue #147)

---
 src/polygon.class.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/polygon.class.js b/src/polygon.class.js
index 8b0c0233..abef98ee 100644
--- a/src/polygon.class.js
+++ b/src/polygon.class.js
@@ -98,11 +98,13 @@
      */
     _render: function(ctx) {
       var point;
+      var offsetX = this.minX + this.width / 2,
+          offsetY = this.minY + this.height / 2;
       ctx.beginPath();
-      ctx.moveTo(this.points[0].x, this.points[0].y);
+      ctx.moveTo(this.points[0].x - offsetX, this.points[0].y - offsetY);
       for (var i = 0, len = this.points.length; i < len; i++) {
         point = this.points[i];
-        ctx.lineTo(point.x, point.y);
+        ctx.lineTo(point.x - offsetX, point.y - offsetY);
       }
       if (this.fill) {
         ctx.fill();