From 52178a0ec57797e9669b91080b562cb2f4112e4b Mon Sep 17 00:00:00 2001
From: Henner Zeller <h.zeller@acm.org>
Date: Thu, 11 Sep 2014 06:41:30 +0000
Subject: [PATCH] o Fix off-by-one for canvas size.

---
 demo-main.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/demo-main.cc b/demo-main.cc
index 96af36b..23d698e 100644
--- a/demo-main.cc
+++ b/demo-main.cc
@@ -47,7 +47,7 @@ public:
   virtual int height() const { return 64; }
   virtual void SetPixel(int x, int y,
                         uint8_t red, uint8_t green, uint8_t blue) {
-    if (x < 0 || x > width() || y < 0 || y > height()) return;
+    if (x < 0 || x >= width() || y < 0 || y >= height()) return;
     // We have up to column 64 one direction, then folding around. Lets map
     if (y > 31) {
       x = 127 - x;