From a63355cbeb98f64c3cde5844af4de85d94727a88 Mon Sep 17 00:00:00 2001
From: Lee <nerd_rage@live.com>
Date: Wed, 16 Jan 2013 17:21:04 -0500
Subject: [PATCH] Faster clearing/updating of pixels

---
 src/Render.java | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/src/Render.java b/src/Render.java
index 2e3499c..eac9c1d 100644
--- a/src/Render.java
+++ b/src/Render.java
@@ -123,16 +123,15 @@ public class Render extends Canvas implements Runnable, MouseListener,
         _frame.setVisible(true);
     }
 
-    private void clear() {
-        for (int x = 0; x < _pixels.length; x++) {
-            _pixels[x] = 0;
-        }
-    }
-
+    int state;
     private void update() {
         for (int i = 0; i < width; i++) {
             for (int j = 0; j < height; j++) {
-                draw(i, j, _grid.getPatch(i, j).getState() * 0xffffff);
+                state = _grid.getPatch(i, j).getState();
+                if(_pixels[i + j * width] == state) {
+                } else {
+                    draw(i, j, state * 0xffffff);
+                }
             }
         }
     }
@@ -147,7 +146,6 @@ public class Render extends Canvas implements Runnable, MouseListener,
             return;
         }
 
-        clear();
         update();
 
         g = bs.getDrawGraphics();