public PointerData ConvertStylusPoint(Phase phase, long timestamp, StylusPoint sp)
{
float x = (float)sp.X;
float y = (float)sp.Y;
PointerData pointerData = null;
if (mScaleTiltX == 0)
{
pointerData = new PointerData(x, y, phase, timestamp)
{
Force = sp.PressureFactor
};
}
else
{
int tiltX = sp.GetPropertyValue(StylusPointProperties.XTiltOrientation);
int tiltY = sp.GetPropertyValue(StylusPointProperties.YTiltOrientation);
float tx = mTargetMinTiltX + (tiltX - mInputMinTiltX) * mScaleTiltX;
float ty = mTargetMinTiltY + (tiltY - mInputMinTiltY) * mScaleTiltY;
PointerData.CalculateAltitudeAndAzimuth(tx, ty, out float altitude, out float azimuth);
pointerData = new PointerData(x, y, phase, timestamp)
{
Force = sp.PressureFactor,
AltitudeAngle = altitude,
AzimuthAngle = azimuth
};
}
return(pointerData);
}
public override void Perform()
{
if (InkCanvas.Strokes.Count == 0)
{
for (int i = 0; i < StylusPointCollection.Count; i++)
{
if (StylusPointCollection[i].HasProperty(StylusPointPropertyInfo))
{
if (!StylusPointPropertyInfo.IsButton)
{
StylusPoint stylusPoint = StylusPointCollection[i];
int value = stylusPoint.GetPropertyValue(StylusPointPropertyInfo);
value++;
stylusPoint.SetPropertyValue(StylusPointPropertyInfo, value);
StylusPointCollection[i] = stylusPoint;
}
}
}
//add the stroke and manipulate the points
Stroke addStroke = new Stroke(StylusPointCollection);
InkCanvas.Strokes.Add(addStroke);
}
else //randomly grab a stroke and tweak the data.
{
Stroke stroke = InkCanvas.Strokes[StrokeIndex % InkCanvas.Strokes.Count];
StylusPointDescription StylusPointDescription = stroke.StylusPoints.Description;
ReadOnlyCollection <StylusPointPropertyInfo> StylusPointPropertyInfo = StylusPointDescription.GetStylusPointProperties();
for (int i = 0; i < stroke.StylusPoints.Count; i++)
{
StylusPoint StylusPoint = stroke.StylusPoints[i];
for (int j = 0; j < StylusPointPropertyInfo.Count; j++)
{
if (stroke.StylusPoints[i].HasProperty(StylusPointPropertyInfo[j]))
{
if (!StylusPointPropertyInfo[j].IsButton)
{
if (StylusPointProperties.X.Id == StylusPointPropertyInfo[j].Id)
{
StylusPoint.X = StylusPoint.X * XFact;
}
else if (StylusPointProperties.Y.Id == StylusPointPropertyInfo[j].Id)
{
StylusPoint.Y = StylusPoint.Y * YFact;
}
else
{
int value = StylusPoint.GetPropertyValue(StylusPointPropertyInfo[j]);
//pick a random number and set the value
value = Math.Min(StylusPointPropertyInfo[j].Minimum + GetValue % StylusPointPropertyInfo[j].Maximum, StylusPointPropertyInfo[j].Maximum);
StylusPoint.SetPropertyValue(StylusPointPropertyInfo[j], value);
}
}
}
}
stroke.StylusPoints[i] = StylusPoint;
int hash = StylusPoint.GetHashCode();
}
}
}
protected override double GetStylusPointWidthOrHeight(StylusPoint stylusPoint, bool isWidth)
{
double pixelsPerInch = DpiUtil.DefaultPixelsPerInch;
// If we have an active source and root visual use the DPI from there
if (ActiveSource?.RootVisual != null)
{
pixelsPerInch = VisualTreeHelper.GetDpi(ActiveSource.RootVisual).PixelsPerInchX;
}
StylusPointProperty property = (isWidth ? StylusPointProperties.Width : StylusPointProperties.Height);
double value = 0d;
if (stylusPoint.HasProperty(property))
{
// Get the property value in the corresponding units
value = (double)stylusPoint.GetPropertyValue(property);
StylusPointPropertyInfo propertyInfo = stylusPoint.Description.GetPropertyInfo(property);
if (!DoubleUtil.AreClose(propertyInfo.Resolution, 0d))
{
value /= propertyInfo.Resolution;
}
else
{
value = 0;
}
// Convert the value to Inches
if (propertyInfo.Unit == StylusPointPropertyUnit.Centimeters)
{
value /= CentimetersPerInch;
}
// Convert the value to pixels
value *= pixelsPerInch;
}
return(value);
}
//</Snippet4>
void StylusPointConstructor()
{
//<snippet5>
StylusPointDescription newDescription =
new StylusPointDescription(new StylusPointPropertyInfo[]
{
new StylusPointPropertyInfo(StylusPointProperties.X),
new StylusPointPropertyInfo(StylusPointProperties.Y),
new StylusPointPropertyInfo(StylusPointProperties.NormalPressure),
new StylusPointPropertyInfo(StylusPointProperties.XTiltOrientation),
new StylusPointPropertyInfo(StylusPointProperties.YTiltOrientation),
new StylusPointPropertyInfo(StylusPointProperties.BarrelButton)
});
int[] propertyValues = { 1800, 1000, 1 };
StylusPoint newStylusPoint = new StylusPoint(100, 100, .5f, newDescription, propertyValues);
//</snippet5>
//<Snippet16>
StylusPointPropertyInfo XTiltPropertyInfo =
new StylusPointPropertyInfo(StylusPointProperties.XTiltOrientation,
0, 3600, StylusPointPropertyUnit.Degrees, 10f);
//</Snippet16>
StylusPoint point = new StylusPoint();
//<Snippet11>
if (point.HasProperty(StylusPointProperties.PitchRotation))
{
int pitchRotation = point.GetPropertyValue(StylusPointProperties.PitchRotation);
}
//</Snippet11>
//<Snippet12>
if (point.HasProperty(StylusPointProperties.PitchRotation))
{
point.SetPropertyValue(StylusPointProperties.PitchRotation, 1000);
}
//</Snippet12>
}
/// <summary>
/// Get the width or height of the stylus point's bounding box.
/// </summary>
/// <param name="stylusPoint">The point for which the width or height is being calculated</param>
/// <param name="isWidth">True if this should calculate width, false for height</param>
/// <returns>The width or height of the stylus poing</returns>
/// <remarks>
/// Note that this is not DPI aware. This implementation has never been aware of DPI changes and
/// changing that now could cause issues with people who depended on this to be based on 96 DPI.
/// </remarks>
protected override double GetStylusPointWidthOrHeight(StylusPoint stylusPoint, bool isWidth)
{
double pixelsPerInch = DpiUtil.DefaultPixelsPerInch;
StylusPointProperty property = (isWidth ? StylusPointProperties.Width : StylusPointProperties.Height);
double value = 0d;
if (stylusPoint.HasProperty(property))
{
// Get the property value in the corresponding units
value = (double)stylusPoint.GetPropertyValue(property);
StylusPointPropertyInfo propertyInfo = stylusPoint.Description.GetPropertyInfo(property);
if (!DoubleUtil.AreClose(propertyInfo.Resolution, 0d))
{
value /= propertyInfo.Resolution;
}
else
{
value = 0;
}
// Convert the value to Inches
if (propertyInfo.Unit == StylusPointPropertyUnit.Centimeters)
{
value /= CentimetersPerInch;
}
// Convert the value to pixels
value *= pixelsPerInch;
}
return(value);
}
public static Size GetSizeFromStylusPoint(StylusPoint stylusPoint)
{
return(new Size(
stylusPoint.GetPropertyValue(StylusPointProperties.Width),
stylusPoint.GetPropertyValue(StylusPointProperties.Height)));
}