private void OnNewRawInkSample(RawInkSample raw)
{
//checking for duplicate times
if (_CapturedPackets.Count > 0 && _CapturedPackets[_CapturedPackets.Count - 1].Time == raw.Time)
{
return;
}
//calibrate the ink sample
CalibratedInkSample cal;
using (Graphics g = _Overlay.AttachedControl.CreateGraphics())
{
cal = InkCalibration.Current.RawToCalibrated(g, raw, _Overlay.AttachedControl.Size);
}
#if (DEBUG)
Console.WriteLine(cal);
#endif
//store the sample
_CapturedPackets.Add(cal);
if (NewInkSample != null)
{
NewInkSample(cal);
}
}
public override bool Equals(object obj)
{
RawInkSample raw = (RawInkSample)obj;
return(raw.Time == Time &&
raw.X == X &&
raw.Y == Y &&
raw.Pressure == Pressure);
}
private void Overlay_NewPackets(object sender, InkCollectorNewPacketsEventArgs e)
{
/*** THIS ROUTINE MUST BE EXTREMELY FAST ***/
/*
* Since we are handling a flurry of packet
* data, this routine should not perform any
* significant processing, just data recording.
*
* Asynchronous invocation on the windows forms
* thread is used to delay as much sample
* processing as possible.
*/
//go over the packet data and store InkSamples
int[] PacketData = e.PacketData;
if (PacketData[2] == 0) //new stroke since timer is 0; use the internal timer to compute the time of the first packet
{
//check if the packets have pressure data
Tablet CurrentTablet = e.Cursor.Tablet;
Overlay_NewPackets_PacketsHavePressure = CurrentTablet != null &&
CurrentTablet.IsPacketPropertySupported(PacketProperty.NormalPressure);
//raise the NewInkSample event with an invalid ink sample to signal a new stroke to listeners
_Overlay.AttachedControl.BeginInvoke(new NewRawInkSampleHandler(OnNewRawInkSample), new RawInkSample(_Timer.Now()));
}
for (int i = 0; i < PacketData.Length;)
{
RawInkSample s = new RawInkSample();
s.Time = _Timer.Now();
s.X = PacketData[i++];
s.Y = PacketData[i++];
i++; //skip the timer sample
s.Pressure = Overlay_NewPackets_PacketsHavePressure ? PacketData[i++] : 0;
//have the form thread raise the NewInkSample event at its convenience
_Overlay.AttachedControl.BeginInvoke(new NewRawInkSampleHandler(OnNewRawInkSample), s);
}
}
private void Overlay_NewPackets(object sender, InkCollectorNewPacketsEventArgs e)
{
/*** THIS ROUTINE MUST BE EXTREMELY FAST ***/
/*
* Since we are handling a flurry of packet
* data, this routine should not perform any
* significant processing, just data recording.
*
* Asynchronous invocation on the windows forms
* thread is used to delay as much sample
* processing as possible.
*/
//go over the packet data and store InkSamples
int[] PacketData = e.PacketData;
if(PacketData[2] == 0) //new stroke since timer is 0; use the internal timer to compute the time of the first packet
{
//check if the packets have pressure data
Tablet CurrentTablet = e.Cursor.Tablet;
Overlay_NewPackets_PacketsHavePressure = CurrentTablet != null
&& CurrentTablet.IsPacketPropertySupported(PacketProperty.NormalPressure);
//raise the NewInkSample event with an invalid ink sample to signal a new stroke to listeners
_Overlay.AttachedControl.BeginInvoke(new NewRawInkSampleHandler(OnNewRawInkSample), new RawInkSample(_Timer.Now()));
}
for(int i = 0; i < PacketData.Length; )
{
RawInkSample s = new RawInkSample();
s.Time = _Timer.Now();
s.X = PacketData[i++];
s.Y = PacketData[i++];
i++; //skip the timer sample
s.Pressure = Overlay_NewPackets_PacketsHavePressure ? PacketData[i++] : 0;
//have the form thread raise the NewInkSample event at its convenience
_Overlay.AttachedControl.BeginInvoke(new NewRawInkSampleHandler(OnNewRawInkSample), s);
}
}
private void OnNewRawInkSample(RawInkSample raw)
{
//checking for duplicate times
if (_CapturedPackets.Count > 0 && _CapturedPackets[_CapturedPackets.Count - 1].Time == raw.Time)
return;
//calibrate the ink sample
CalibratedInkSample cal;
using (Graphics g = _Overlay.AttachedControl.CreateGraphics())
{
cal = InkCalibration.Current.RawToCalibrated(g, raw, _Overlay.AttachedControl.Size);
}
#if(DEBUG)
Console.WriteLine(cal);
#endif
//store the sample
_CapturedPackets.Add(cal);
if(NewInkSample != null)
NewInkSample(cal);
}
