/// <summary>
/// Callback that handles results from the Wizard Labeler. The SocketClient
/// forwards each full sketch received to the recognizer. This method
/// unmarshalls the received sketch and stores it internally; a
/// recognition event is fired only when the user has antecedently
/// triggered recognition.
/// </summary>
/// <param name="xmlStr">The XML string that the Wizard Labeler sent.</param>
private void socketClient_SketchRecievedEvent(string xmlStr)
{
// Read the XML string and fetch the sketch
XmlTextReader xmlReader = new XmlTextReader(new StringReader(xmlStr));
xmlReader.WhitespaceHandling = WhitespaceHandling.None;
ReadXML readXml = new ReadXML(xmlReader);
this.currentSketch = readXml.Sketch;
this.lastSketchReceived = DateTime.Now;
// Apply error to current sketch before constructing
// a recognition result
this.applyErrorToCurrentRecognitionResult();
// Construct a recognition result
this.currentRecognitionResult = new RecognizerEventArgs();
this.currentRecognitionResult.eventTime = DateTime.Now;
this.currentRecognitionResult.recognitionResults[0] = this.currentSketch;
this.currentRecognitionResult.userTriggered = waitingOnWizard;
// If we were waiting for the Wizard to finish labeling a sketch,
// then fire a recognition event. In the future, we might
// 'fade in' recognition results as they are received.
if (waitingOnWizard)
{
waitingOnWizard = false;
RecognitionEvent(this, this.currentRecognitionResult);
}
}
/// <summary>
/// When the user manually triggers recognition, label everything
/// in the sketch as a wire.
/// </summary>
void Recognizer.recognize(Sketch.Sketch sketch, Sketch.Stroke[] selectedStrokes, bool userTriggered)
{
// Only operate on user triggered recognition events
if (!userTriggered)
{
return;
}
lastLabeledSketchArgs = new RecognizerEventArgs();
foreach (Sketch.Stroke selectedStroke in selectedStrokes)
{
if (selectedStroke == null)
{
// The recognition triggerer left empty elements in
// the selected strokes array. Here we just ignore
// the lack of a stroke.
continue;
}
// Get the corresponding stroke in the sketch to make sure we label
// the right substrokes
Sketch.Stroke sketchStroke = sketch.GetStroke((System.Guid)selectedStroke.XmlAttrs.Id);
if (sketchStroke == null)
{
// The selected stroke is not in the sketch.
// In some scenarios, we might want to throw an exception,
// but in this case we just skip the stroke
continue;
}
// Now label the substrokes
Sketch.Substroke[] selectedSubstrokes = sketchStroke.Substrokes;
foreach (Sketch.Substroke selectedSubstroke in selectedSubstrokes)
{
if (selectedSubstroke.GetLabels().Length > 0)
{
continue;
}
// Apply wire label or error label using simulated error rate
if (randobj.NextDouble() < UIConstants.ErrorLabelErrorRate)
{
sketch.AddLabel(selectedSubstroke, UIConstants.ErrorLabel, 1.0);
}
else
{
sketch.AddLabel(selectedSubstroke, UIConstants.WireLabel, 1.0);
}
}
}
lastLabeledSketchArgs.recognitionResults[0] = sketch;
lastLabeledSketchArgs.eventTime = DateTime.Now;
lastLabeledSketchArgs.userTriggered = true;
RecognitionEvent(this, lastLabeledSketchArgs);
}
public DummyRecognizer()
{
// Read in the sketch
Sketch.Sketch dummySketch = (new ReadXML(UIConstants.DummyRecognitionFilepath)).Sketch;
// Construct the recognition results to return
dummyRecognitionResults = new RecognizerEventArgs();
dummyRecognitionResults.recognitionResults[0] = dummySketch;
dummyRecognitionResults.eventTime = DateTime.Now;
dummyRecognitionResults.userTriggered = true;
}
/// <summary>
/// When the user manually triggers recognition, label everything
/// in the sketch as a wire.
/// </summary>
void Recognizer.recognize(Sketch.Sketch sketch, bool userTriggered)
{
// Only operate on user triggered recognition events
if (!userTriggered)
{
return;
}
foreach (Sketch.Substroke substroke in sketch.Substrokes)
{
sketch.AddLabel(substroke, UIConstants.WireLabel, 1.0);
}
lastLabeledSketchArgs = new RecognizerEventArgs();
lastLabeledSketchArgs.recognitionResults[0] = sketch;
lastLabeledSketchArgs.eventTime = DateTime.Now;
lastLabeledSketchArgs.userTriggered = true;
RecognitionEvent(this, lastLabeledSketchArgs);
}