diff -r 591d06d8e06f -r 5bf850c5b7f1 javaquery/canvas/src/main/java/net/java/html/canvas/ImageData.java
--- a/javaquery/canvas/src/main/java/net/java/html/canvas/ImageData.java	Thu May 23 15:36:42 2013 +0200
+++ b/javaquery/canvas/src/main/java/net/java/html/canvas/ImageData.java	Mon May 27 08:30:18 2013 +0200
@@ -18,7 +18,9 @@
 package net.java.html.canvas;
 
 /**
- *
+ * ImageData is an updateable 2-Dimensional Array of Colour values.
+ * Created ( createPixelMap / getSnapShot ) and rendered ( paintPixelMap ) by GraphicsContext .
+ * 
  * @author antonepple
  */
 public interface ImageData {
@@ -27,5 +29,8 @@
 
     public double getWidth();
     
+    public int getPixel(double x, double y);
     
+    public void setPixel(double x, double y, int value);
+       
 }