/// <summary>
/// Create a stroke from an InkStroke. Used when adding the stroke.
/// </summary>
/// <param name="stroke"></param>
/// <param name="dtGuid"></param>
/// <param name="SAMPLE_RATE"></param>
public Stroke(System.Windows.Ink.Stroke stroke, Guid dtGuid, float SAMPLE_RATE)
: this()
{
// Get the timestamp for the function using a const Guid
ulong theTime;
if (stroke.ContainsPropertyData(dtGuid))
{
// MIT file format
ulong fileTime = (ulong)stroke.GetPropertyData(dtGuid);
theTime = (fileTime - 116444736000000000) / 10000;
}
else
{
theTime = ((ulong)DateTime.Now.ToFileTime() - 116444736000000000) / 10000;
}
// Set time data for each point and add it to the list of substroke's points
List <Point> pointsToAdd = new List <Point>();
System.Windows.Input.StylusPointCollection stylusPoints = stroke.StylusPoints;
int numPoints = stylusPoints.Count;
for (int i = 0; i < numPoints; i++)
{
// We believe this to be the standard sample rate. The multiplication by 1,000 is to convert from
// seconds to milliseconds.
//
// Our time is in the form of milliseconds since Jan 1, 1970
//
// NOTE: The timestamp for the stroke is made WHEN THE PEN IS LIFTED
System.Windows.Input.StylusPoint styPoint = stylusPoints[i];
ulong adjustedTime = theTime - (ulong)((1 / SAMPLE_RATE * 1000) * (numPoints - i));
Point toAdd = new Point((float)styPoint.X, (float)styPoint.Y, (float)styPoint.PressureFactor, Convert.ToUInt64(adjustedTime), "point");
// HACK: Add back in if debugging: if (!pointsToAdd.Contains(toAdd))
pointsToAdd.Add(toAdd);
}
// Create the new substroke using its drawing attributes
System.Windows.Ink.DrawingAttributes drawingAttributes = stroke.DrawingAttributes;
Substroke substroke = new Substroke(pointsToAdd);
substroke.Name = "substroke";
substroke.Color = drawingAttributes.Color.GetHashCode();
substroke.PenTip = drawingAttributes.StylusTip.ToString();
substroke.PenWidth = (float)drawingAttributes.Width;
substroke.PenHeight = (float)drawingAttributes.Height;
substroke.Source = "InkSketch.canvasStrokeToSketchStroke";
substroke.Start = pointsToAdd[0].Id;
substroke.End = pointsToAdd[pointsToAdd.Count - 1].Id;
this.AddSubstroke(substroke);
// Update the stroke's attributes
this._xmlAttributes.Name = "stroke";
this._xmlAttributes.Time = (ulong)theTime;
this._xmlAttributes.Type = "stroke";
this._xmlAttributes.Source = "Converter";
}
/// <summary>
/// Gets the board point collection. This allows serializable messages to be sent to the server.
/// </summary>
/// <param name="stroke">The stroke.</param>
/// <returns>A new board point collection.</returns>
private BoardPointCollection GetBoardPointCollection(System.Windows.Ink.Stroke stroke)
{
var bpc = new BoardPointCollection();
bpc.Color = stroke.DrawingAttributes.Color.ToString();
var customProperties = stroke.GetPropertyDataIds();
bpc.ID = customProperties.First();
bpc.User = stroke.GetPropertyData(customProperties.First()).ToString();
bpc.BrushWidth = stroke.DrawingAttributes.Width;
bpc.BrushHeight = stroke.DrawingAttributes.Height;
stroke.StylusPoints.ToList().ForEach(point =>
{
bpc.Points.Add(new BoardPoint()
{
X = point.X,
Y = point.Y,
PressureFactor = point.PressureFactor
});
});
return(bpc);
}