From 5c7f7b8f70d1f9b87758b74e7efadaef91fd22a5 Mon Sep 17 00:00:00 2001
From: Jules Laplace <jules@okfoc.us>
Date: Wed, 11 May 2016 17:30:47 -0400
Subject: fix smear at edge of canvas bug

---
 js/blit.js | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'js/blit.js')

diff --git a/js/blit.js b/js/blit.js
index b434742..2dce3e5 100644
--- a/js/blit.js
+++ b/js/blit.js
@@ -28,6 +28,15 @@ var blit = (function(){
       }
     })
   }
+  blit.copy_toroidal_from = function(A, B, x, y){
+    x = x || 0 ; y = y || 0
+    B.forEach(function(lex, u, v){
+      var cell = A.get(u+x, v+y)
+      if (cell) {
+        lex.assign(cell)
+      }
+    })
+  }
   blit.copy_to = function(A, B, x, y){
     x = x || 0 ; y = y || 0
     B.forEach(function(lex, u, v){
-- 
cgit v1.2.3-70-g09d2