From a54bec599a4d49c8586a65a2f570e434cbbf08a2 Mon Sep 17 00:00:00 2001
From: Yang Li <liyang@google.com>
Date: Mon, 25 Jan 2010 17:47:51 -0800
Subject: [PATCH] Added comments for GestureUtilities.

---
 core/java/android/gesture/GestureUtilities.java | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/core/java/android/gesture/GestureUtilities.java b/core/java/android/gesture/GestureUtilities.java
index 6fdf97c8cd18c..9d95ce4bf037f 100755
--- a/core/java/android/gesture/GestureUtilities.java
+++ b/core/java/android/gesture/GestureUtilities.java
@@ -26,6 +26,16 @@ import java.io.IOException;
 
 import static android.gesture.GestureConstants.*;
 
+/**
+ * Utility functions for gesture processing & analysis, including methods for:
+ * <ul> 
+ * <li>feature extraction (e.g., samplers and those for calculating bounding
+ * boxes and gesture path lengths);
+ * <li>geometric transformation (e.g., translation, rotation and scaling);
+ * <li>gesture similarity comparison (e.g., calculating Euclidean or Cosine
+ * distances between two gestures).
+ * </ul>
+ */
 public final class GestureUtilities {
   
     private static final float SCALING_THRESHOLD = 0.26f;