public void AddExample(Gesture p)
{
bool success = true;
try
{
// first, ensure that p's name is right
string name = ParseName(p.Name);
if (name != _name)
throw new ArgumentException("Prototype name does not equal the name of the category to which it was added.");
// second, ensure that it doesn't already exist
for (int i = 0; i < _prototypes.Count; i++)
{
Gesture p0 = (Gesture) _prototypes[i];
if (p0.Name == p.Name)
throw new ArgumentException("Prototype name was added more than once to its category.");
}
}
catch (ArgumentException ex)
{
Console.WriteLine(ex.Message);
success = false;
}
if (success)
{
_prototypes.Add(p);
}
}
public bool SaveGesture(string filename, ArrayList points)
{
// add the new prototype with the name extracted from the filename.
string name = Gesture.ParseName(filename);
if (_gestures.ContainsKey(name))
_gestures.Remove(name);
Gesture newPrototype = new Gesture(name, points);
_gestures.Add(name, newPrototype);
// figure out the duration of the gesture
PointR p0 = (PointR) points[0];
PointR pn = (PointR) points[points.Count - 1];
// do the xml writing
bool success = true;
XmlTextWriter writer = null;
try
{
// save the prototype as an Xml file
writer = new XmlTextWriter(filename, Encoding.UTF8);
writer.Formatting = Formatting.Indented;
writer.WriteStartDocument(true);
writer.WriteStartElement("Gesture");
writer.WriteAttributeString("Name", name);
writer.WriteAttributeString("NumPts", XmlConvert.ToString(points.Count));
writer.WriteAttributeString("Millseconds", XmlConvert.ToString(pn.T - p0.T));
writer.WriteAttributeString("AppName", Assembly.GetExecutingAssembly().GetName().Name);
writer.WriteAttributeString("AppVer", Assembly.GetExecutingAssembly().GetName().Version.ToString());
writer.WriteAttributeString("Date", DateTime.Now.ToLongDateString());
writer.WriteAttributeString("TimeOfDay", DateTime.Now.ToLongTimeString());
// write out the raw individual points
foreach (PointR p in points)
{
writer.WriteStartElement("Point");
writer.WriteAttributeString("X", XmlConvert.ToString(p.X));
writer.WriteAttributeString("Y", XmlConvert.ToString(p.Y));
writer.WriteAttributeString("T", XmlConvert.ToString(p.T));
writer.WriteEndElement(); // <Point />
}
writer.WriteEndDocument(); // </Gesture>
}
catch (XmlException xex)
{
Console.Write(xex.Message);
success = false;
}
catch (Exception ex)
{
Console.Write(ex.Message);
success = false;
}
finally
{
if (writer != null)
writer.Close();
}
return success; // Xml file successfully written (or not)
}
public Category(string name, Gesture firstExample)
{
_name = name;
_prototypes = new ArrayList();
AddExample(firstExample);
}
public Category(string name, Gesture firstExample)
{
_name = name;
_prototypes = new ArrayList();
AddExample(firstExample);
}
public Category(string name, Gesture firstExample)
{
_name = name;
_prototypes = new ArrayList();//初始化 ArrayList 类的新实例，该实例为空并且具有默认初始容量
AddExample(firstExample);
}