init assets and filemgt

Assets/PDollar/Scripts/PDollarGestureRecognizer/GestureIO.cs

@@ -0,0 +1,128 @@
+using System.IO;
+using System.Collections.Generic;
+using System.Xml;
+
+using UnityEngine;
+
+namespace PDollarGestureRecognizer
+{
+    public class GestureIO
+    {
+        /// <summary>
+        /// Reads a multistroke gesture from an XML file
+        /// </summary>
+        /// <param name="xml"></param>
+        /// <returns></returns>
+		public static Gesture ReadGestureFromXML(string xml) {
+
+			XmlTextReader xmlReader = null;
+			Gesture gesture = null;
+
+			try {
+
+				xmlReader = new XmlTextReader(new StringReader(xml));
+				gesture = ReadGesture(xmlReader);
+
+			} finally {
+
+				if (xmlReader != null)
+					xmlReader.Close();
+			}
+
+			return gesture;
+		}
+
+		/// <summary>
+		/// Reads a multistroke gesture from an XML file
+		/// </summary>
+		/// <param name="fileName"></param>
+		/// <returns></returns>
+		public static Gesture ReadGestureFromFile(string fileName) {
+
+			XmlTextReader xmlReader = null;
+			Gesture gesture = null;
+			
+			try {
+				
+				xmlReader = new XmlTextReader(File.OpenText(fileName));
+				gesture = ReadGesture(xmlReader);
+				
+			} finally {
+				
+				if (xmlReader != null)
+					xmlReader.Close();
+			}
+			
+			return gesture;
+		}
+
+		private static Gesture ReadGesture(XmlTextReader xmlReader)
+        {
+            List<Point> points = new List<Point>();
+            int currentStrokeIndex = -1;
+            string gestureName = "";
+            try
+            {
+                while (xmlReader.Read())
+                {
+                    if (xmlReader.NodeType != XmlNodeType.Element) continue;
+                    switch (xmlReader.Name)
+                    {
+                        case "Gesture":
+                            gestureName = xmlReader["Name"];
+                            if (gestureName.Contains("~")) // '~' character is specific to the naming convention of the MMG set
+                                gestureName = gestureName.Substring(0, gestureName.LastIndexOf('~'));
+                            if (gestureName.Contains("_")) // '_' character is specific to the naming convention of the MMG set
+                                gestureName = gestureName.Replace('_', ' ');
+                            break;
+                        case "Stroke":
+                            currentStrokeIndex++;
+                            break;
+                        case "Point":
+                            points.Add(new Point(
+                                float.Parse(xmlReader["X"]),
+                                float.Parse(xmlReader["Y"]),
+                                currentStrokeIndex
+                            ));
+                            break;
+                    }
+                }
+            }
+            finally
+            {
+                if (xmlReader != null)
+                    xmlReader.Close();
+            }
+            return new Gesture(points.ToArray(), gestureName);
+        }
+
+        /// <summary>
+        /// Writes a multistroke gesture to an XML file
+        /// </summary>
+        public static void WriteGesture(PDollarGestureRecognizer.Point[] points, string gestureName, string fileName)
+        {
+            using (StreamWriter sw = new StreamWriter(fileName))
+            {
+                sw.WriteLine("<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>");
+                sw.WriteLine("<Gesture Name = \"{0}\">", gestureName);
+                int currentStroke = -1;
+                for (int i = 0; i < points.Length; i++)
+                {
+                    if (points[i].StrokeID != currentStroke)
+                    {
+                        if (i > 0)
+                            sw.WriteLine("\t</Stroke>");
+                        sw.WriteLine("\t<Stroke>");
+                        currentStroke = points[i].StrokeID;
+                    }
+
+                    sw.WriteLine("\t\t<Point X = \"{0}\" Y = \"{1}\" T = \"0\" Pressure = \"0\" />",
+                        points[i].X, points[i].Y
+                    );
+                }
+                sw.WriteLine("\t</Stroke>");
+                sw.WriteLine("</Gesture>");
+            }
+        }
+    }
+}