/// <summary>
/// Reads back custom data from a raw representation of the data message.
/// </summary>
/// <param name="reader">The binary reader used to read from the raw representation of the original data message.</param>
protected override void ReadData(BinaryReader reader)
{
var dateTimeTicks = reader.ReadInt64();
var offsetTicks = reader.ReadInt64();
var offset = TimeSpan.FromTicks(offsetTicks);
Timestamp = new DateTimeOffset(dateTimeTicks, offset);
TouchPoint = new TouchPoint()
{
Id = reader.ReadInt32(),
Location = new Vector2(reader.ReadSingle(), reader.ReadSingle()),
State = (TouchPointState)reader.ReadInt32()
};
}
/// <summary>
/// Reads back custom data from a raw representation of the data message.
/// </summary>
/// <param name="reader">The binary reader used to read from the raw representation of the original data message.</param>
protected override void ReadData(BinaryReader reader)
{
TouchPoints.Clear();
int count = reader.ReadInt32();
for (int i = 0; i < count; i++)
{
var point = new TouchPoint()
{
Id = reader.ReadInt32(),
Location = new Vector2(reader.ReadSingle(), reader.ReadSingle()),
State = (TouchPointState)reader.ReadInt32()
};
TouchPoints.Add(point);
}
}
private void ProcessTouch()
{
var touchCollection = TouchPanel.GetState();
if (touchCollection.Count > 0)
{
// convert list
List<TouchPoint> touchPoints = ConvertTouchPoints(touchCollection);
// can be zero if points are outside of bounds
if (touchPoints.Count > 0)
{
_logger.Trace("Processing raw touch/gesture input");
lock (_activeDataTypes)
{
// report touch?
if (_activeDataTypes.Contains(DataType.Touch))
{
var data = new TouchData(touchPoints);
// pass on data to the outside world
_dataAcquiredCallback(data);
}
// report drag?
if (_activeDataTypes.Contains(DataType.CustomDrag))
{
// use the first touch point
var touchPoint = touchPoints[0];
// create the data
var data = new CustomDragData();
data.TouchPoint = touchPoint;
data.Delta = new Vector2(touchPoint.Location.X - _lastDragTouchPoint.Location.X,
touchPoint.Location.Y - _lastDragTouchPoint.Location.Y);
// new reference
_lastDragTouchPoint = touchPoint;
// send
_dataAcquiredCallback(data);
}
}
}
}
}
private List<TouchPoint> ConvertTouchPoints(TouchCollection touchCollection)
{
List<TouchPoint> result = new List<TouchPoint>(touchCollection.Count);
foreach (var touch in touchCollection)
{
// convert to logical coordinates
var location = new Vector2();
CoordinateSystemHelper.CalculateLogicalPosition(location, touch.Position);
// check if this is valid
if (!CoordinateSystemHelper.IsInActiveArea(location, InputMargin))
{
continue;
}
// generate touch point
var touchPoint = new TouchPoint();
touchPoint.Id = touch.Id;
touchPoint.State = ConvertState(touch.State);
// project
CoordinateSystemHelper.ProjectToActiveArea(location, InputMargin);
touchPoint.Location = location;
result.Add(touchPoint);
}
return result;
}
