From 744b4f00e9c8a7ef8a75cc8508bf10c0da8de9cc Mon Sep 17 00:00:00 2001
From: Jules Laplace <jules@okfoc.us>
Date: Mon, 30 Mar 2015 21:27:07 -0400
Subject: plotting points on an image of an art gallery

---
 public/assets/javascripts/mx/primitives/mx.grid.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'public/assets/javascripts/mx/primitives/mx.grid.js')

diff --git a/public/assets/javascripts/mx/primitives/mx.grid.js b/public/assets/javascripts/mx/primitives/mx.grid.js
index 7a40144..a765c89 100644
--- a/public/assets/javascripts/mx/primitives/mx.grid.js
+++ b/public/assets/javascripts/mx/primitives/mx.grid.js
@@ -34,8 +34,13 @@ MX.Grid = MX.Object3D.extend({
 		this.draw(ctx)
   },
   
-  draw: function(ctx){
+  draw: function(ctx, recenter){
     ctx = ctx || this.ctx
+
+    if (recenter) {
+      ctx.save()
+      ctx.translate( -grid.width/2, -grid.height/2 )
+    }
     
     var cells = this.ops.cells,
         space = this.ops.space,
@@ -53,6 +58,11 @@ MX.Grid = MX.Object3D.extend({
     }
     ctx.closePath()
     ctx.stroke()
+
+    if (recenter) {
+      ctx.restore()
+    }
+
   },
 
 })
-- 
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