internal void UpdateToken(InternalToken internalToken)
{
this._position = internalToken.Position;
this._angle = internalToken.Angle;
this._deltaAngle = internalToken.DeltaAngle;
this._deltaPosition = internalToken.DeltaPosition;
}
internal Token(InternalToken internalToken)
{
this._id = internalToken.Id;
this._class = internalToken.Class;
this._position = internalToken.Position;
this._angle = internalToken.Angle;
this._deltaAngle = internalToken.DeltaAngle;
this._deltaPosition = internalToken.DeltaPosition;
}
public InternalToken IdentifyCluster(Cluster cluster)
{
//Start Stop Watch for statistics
Stopwatch sw = Stopwatch.StartNew();
InternalToken token = null;
//Cluster identification Algorithm
Dictionary<int, TouchInput> clusterPoints = cluster.Points;
TokenMarker[] meanSquaredTokenReferenceSystem;
/*Ordered indexes of markers 0 => Origin
* 1 => X axis
* 2 => Y axis
* 3 => Data
*/
int[] orderedIndexes = new int[4];
//Find two furthest apart poits which reppresent the x xis and the y axis markers
int[] furthestPointIndexes = FindTwoFurthestPoints(clusterPoints.Values.ToArray());
//Gets indexes of two remaing points which reppresent origin and data marker
int[] originAndDataIndexes = clusterPoints.Where(p => p.Key != furthestPointIndexes[0] && p.Key != furthestPointIndexes[1])
.Select(z => z.Key).ToArray();
if(FindOriginIndex(furthestPointIndexes, originAndDataIndexes, clusterPoints, ref orderedIndexes))
{
//Origin Marker Identified and stored in orderedIndexes[0]
if (DistinguishAxisVectors(furthestPointIndexes, clusterPoints, ref orderedIndexes))
{
//Axis markers have been correctly identified
//Remaing point is Data Marker
orderedIndexes[3] = clusterPoints.Where(p => p.Key != orderedIndexes[0] && p.Key != orderedIndexes[1] && p.Key != orderedIndexes[2])
.Select(z => z.Key).Single();
//Compute Mean Square Problem for reference System
Dictionary<int, TokenMarker> markers = TokenUtils.ConvertTouchInputToMarkers(orderedIndexes, clusterPoints);
meanSquaredTokenReferenceSystem = TokenUtils.MeanSquareOrthogonalReferenceSystem(markers[orderedIndexes[0]],
markers[orderedIndexes[1]],
markers[orderedIndexes[2]],
TokenManager.CurrentTokenType.DistanceOriginAxisMarkersPX);
//Create Token
token = new InternalToken(cluster.Hash, markers);
token.SetMeanSquareReferenceSystem(meanSquaredTokenReferenceSystem);
}
else
throw (new TokenAxisNotDistinguishedException("Could not Distinguish Axis"));
}
else
{
//throw (new NoOrthogonalVectorsFoundException("Could not find Orthogonal Vectors"));
//No orthogonal vectors found thus no origin, failed identification
//For the moment return null, in case consider doing second iteration on second maximum
sw.Stop();
TokenStatistics.Instance.SetTokenIdentificationTime(sw.ElapsedMilliseconds);
return token;
}
sw.Stop();
TokenStatistics.Instance.SetTokenIdentificationTime(sw.ElapsedMilliseconds);
return token;
}
private bool UpdateGreaterThanThreshold(InternalToken token)
{
if (Math.Abs(token.DeltaPosition.x) > TokenUpdateTranslationThreshold || Math.Abs(token.DeltaPosition.y) > TokenUpdateTranslationThreshold ||
Math.Abs(token.DeltaAngle) > TokenUpdateRotationThreshold)
return true;
else
return false;
}
internal static void AddToken(InternalToken token)
{
_tokens[token.Id] = new Token(token);
}