From ae0bf8068bbf9ce2a950994960fed202dcb03a70 Mon Sep 17 00:00:00 2001
From: Erik van der Zalm <erik@vdzalm.eu>
Date: Tue, 27 Mar 2012 19:03:33 +0200
Subject: [PATCH] Fixed arc offset.

---
 Marlin/Marlin.pde | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/Marlin/Marlin.pde b/Marlin/Marlin.pde
index ce11d7ba2..5b1a13bab 100644
--- a/Marlin/Marlin.pde
+++ b/Marlin/Marlin.pde
@@ -1328,8 +1328,18 @@ void get_coordinates()
 void get_arc_coordinates()
 {
    get_coordinates();
-   if(code_seen('I')) offset[0] = code_value();
-   if(code_seen('J')) offset[1] = code_value();
+   if(code_seen('I')) {
+     offset[0] = code_value();
+   } 
+   else {
+     offset[0] = 0.0;
+   }
+   if(code_seen('J')) {
+     offset[1] = code_value();
+   }
+   else {
+     offset[1] = 0.0;
+   }
 }
 
 void prepare_move()