/// <summary>
/// Main application Logic
/// We retrieve the current Contacts and send TUIO messages accordingly
/// You can specify via appConfig if you want a Finger Contact to be sent as /tuio/2Dcur or /tuio/2Dblb
/// Sending it as /tuio/2Dblb conserves the Contact size, rotation, angular velocity and angular acceleration
/// </summary>
protected override void Update(GameTime gameTime)
{
if (isApplicationActivated || isApplicationPreviewed)
{
_contactManipulationData.Clear();
// Want to identify all the contacts added or removed since the last update.
List <TouchPoint> addedContacts = new List <TouchPoint>();
List <TouchPoint> removedContacts = new List <TouchPoint>();
List <TouchPoint> changedContacts = new List <TouchPoint>();
List <TouchPoint> aliveContacts = new List <TouchPoint>();
List <TouchPoint> addedFingers = new List <TouchPoint>();
List <TouchPoint> removedFingers = new List <TouchPoint>();
List <TouchPoint> changedFingers = new List <TouchPoint>();
List <TouchPoint> aliveFingers = new List <TouchPoint>();
List <TouchPoint> addedTags = new List <TouchPoint>();
List <TouchPoint> removedTags = new List <TouchPoint>();
List <TouchPoint> changedTags = new List <TouchPoint>();
List <TouchPoint> aliveTags = new List <TouchPoint>();
List <TouchPoint> addedBlobs = new List <TouchPoint>();
List <TouchPoint> removedBlobs = new List <TouchPoint>();
List <TouchPoint> changedBlobs = new List <TouchPoint>();
List <TouchPoint> aliveBlobs = new List <TouchPoint>();
ReadOnlyTouchPointCollection currentContacts = contactTarget.GetState();
// Write all unactive previous Contacts into the according removed-Lists
if (previousContacts != null)
{
foreach (TouchPoint contact in previousContacts)
{
//Console.WriteLine("Touch: " + contact.X + ", " + contact.Y);
TouchPoint c = null;
currentContacts.TryGetTouchPointFromId(contact.Id, out c);
if (c == null)
{
removedContacts.Add(contact);
if (contact.IsFingerRecognized && (Properties.Settings.Default.SendFingersAsBlobs == false || Properties.Settings.Default.SendFingersAlsoAsBlobs == true))
{
Console.WriteLine("Removing Finger: " + contact.Id);
removedFingers.Add(contact);
}
if (contact.IsFingerRecognized && (Properties.Settings.Default.SendFingersAsBlobs == true || Properties.Settings.Default.SendFingersAlsoAsBlobs == true))
{
removedBlobs.Add(contact);
}
else if (contact.IsTagRecognized)
{
removedTags.Add(contact);
}
else
{
removedBlobs.Add(contact);
}
}
}
// Throw away unused Manipulation Processors
cleanManipulationProcessorList(removedContacts);
foreach (TouchPoint contact in currentContacts)
{
aliveContacts.Add(contact);
// Put the Contact into the according List
if (contact.IsFingerRecognized && (Properties.Settings.Default.SendFingersAsBlobs == false || Properties.Settings.Default.SendFingersAlsoAsBlobs == true))
{
aliveFingers.Add(contact);
}
if (contact.IsFingerRecognized && (Properties.Settings.Default.SendFingersAsBlobs == true || Properties.Settings.Default.SendFingersAlsoAsBlobs == true))
{
aliveBlobs.Add(contact);
}
else if (contact.IsTagRecognized)
{
aliveTags.Add(contact);
}
else
{
aliveBlobs.Add(contact);
}
TouchPoint c = null;
previousContacts.TryGetTouchPointFromId(contact.Id, out c);
if (c != null)
{
if (c.ToString() != contact.ToString())
{
changedContacts.Add(contact);
// Invoke the processing of a Contact's Manipulation Processor
processContactManipulator(contact, currentContacts, previousContacts);
// Put the Contact into the according List
if (contact.IsFingerRecognized && (Properties.Settings.Default.SendFingersAsBlobs == false || Properties.Settings.Default.SendFingersAlsoAsBlobs == true))
{
changedFingers.Add(contact);
}
if (contact.IsFingerRecognized && (Properties.Settings.Default.SendFingersAsBlobs == true || Properties.Settings.Default.SendFingersAlsoAsBlobs == true))
{
changedBlobs.Add(contact);
}
else if (contact.IsTagRecognized)
{
changedTags.Add(contact);
}
else
{
changedBlobs.Add(contact);
}
}
}
else
{
addedContacts.Add(contact);
// Add a Manipulation Processor to each contact
// This is done for extracting the contact velocity directly from Surface SDK
addManipulationProcessor(contact);
if (contact.IsFingerRecognized && (Properties.Settings.Default.SendFingersAsBlobs == false || Properties.Settings.Default.SendFingersAlsoAsBlobs == true))
{
addedFingers.Add(contact);
}
if (contact.IsFingerRecognized && (Properties.Settings.Default.SendFingersAsBlobs == true || Properties.Settings.Default.SendFingersAlsoAsBlobs == true))
{
addedBlobs.Add(contact);
}
else if (contact.IsTagRecognized)
{
addedTags.Add(contact);
}
else
{
addedBlobs.Add(contact);
}
}
}
// Send the TUIO messages ////////////////////////////
//Console.WriteLine("Sending...");
//sendTUIO_2DCur(changedFingers, previousContacts);
//sendTUIO_2DObj(changedTags, previousContacts);
//sendTUIO_2DBlb(changedBlobs, previousContacts);
//////////////////////////////////////////////////////
if (addedFingers.Count != 0 || changedFingers.Count != 0 || removedFingers.Count != 0)
{
sendTUIO_2DCur(aliveFingers, previousContacts);
}
if (addedTags.Count != 0 || changedTags.Count != 0 || removedTags.Count != 0)
{
sendTUIO_2DObj(aliveTags, previousContacts);
}
}
else
{
foreach (TouchPoint c in currentContacts)
{
addedContacts.Add(c);
if (c.IsFingerRecognized)
{
addedFingers.Add(c);
}
if (c.IsTagRecognized)
{
addedTags.Add(c);
}
}
}
previousContacts = currentContacts;
foreach (TouchPoint c in changedContacts)
{
updateHistoryData(c.Id, c.FrameTimestamp);
}
foreach (TouchPoint c in removedContacts)
{
cleanHistory(c.Id);
}
}
base.Update(gameTime);
}
