// throws ArgumentException if pointerPoint.pointerId is already in live rendering mode
public void EnterLiveRendering(Windows.UI.Input.PointerPoint pointerPoint, Windows.UI.Input.Inking.InkDrawingAttributes drawingAttributes)
{
uint pointerId = pointerPoint.PointerId;
// Create and initialize the data structures necessary to render a polyline in XAML.
var stroke = new Windows.UI.Xaml.Media.PolyLineSegment();
stroke.Points.Add(pointerPoint.Position);
var figure = new Windows.UI.Xaml.Media.PathFigure();
figure.StartPoint = pointerPoint.Position;
figure.Segments.Add(stroke);
var geometry = new Windows.UI.Xaml.Media.PathGeometry();
geometry.Figures.Add(figure);
var path = new Windows.UI.Xaml.Shapes.Path();
path.Data = geometry;
// Set the stroke's graphical properties, which are controlled by the Path object
path.Stroke = new Windows.UI.Xaml.Media.SolidColorBrush(drawingAttributes.Color);
path.StrokeThickness = drawingAttributes.Size.Width;
path.StrokeLineJoin = Windows.UI.Xaml.Media.PenLineJoin.Round;
path.StrokeStartLineCap = Windows.UI.Xaml.Media.PenLineCap.Round;
// Update dictionaries
liveStrokes.Add(pointerId, stroke); // throws ArgumentException if pointerId is already in the dictionary
livePaths.Add(pointerId, path); // throws ArgumentException if pointerId is already in the dictionary
// Add path to render so that it is rendered (on top of all the elements with same ZIndex).
// We want the live render to be on top of the Bezier render, so we set the ZIndex of the elements of the
// live render to 2 and that of the elements of the Bezier render to 1.
render.Children.Add(path);
Windows.UI.Xaml.Controls.Canvas.SetZIndex(path, 2);
}
public static Windows.UI.Xaml.Shapes.Path CreateBezierPath(Windows.UI.Input.Inking.InkStroke stroke)
{
// Create Bezier geometries using information provided by the stroke's segments
var figure = new Windows.UI.Xaml.Media.PathFigure();
var segments = stroke.GetRenderingSegments().GetEnumerator();
segments.MoveNext();
// First segment is degenerate and corresponds to initial position
figure.StartPoint = segments.Current.Position;
// Now loop through all remaining segments
while (segments.MoveNext())
{
var bs = new Windows.UI.Xaml.Media.BezierSegment();
bs.Point1 = segments.Current.BezierControlPoint1;
bs.Point2 = segments.Current.BezierControlPoint2;
bs.Point3 = segments.Current.Position;
figure.Segments.Add(bs);
}
// Create and initialize the data structures necessary to render the figure
var geometry = new Windows.UI.Xaml.Media.PathGeometry();
geometry.Figures.Add(figure);
var path = new Windows.UI.Xaml.Shapes.Path();
path.Data = geometry;
// Set the stroke's graphical properties, which are controlled by the Path object
path.Stroke = new Windows.UI.Xaml.Media.SolidColorBrush(stroke.DrawingAttributes.Color);
path.StrokeThickness = stroke.DrawingAttributes.Size.Width;
path.StrokeLineJoin = Windows.UI.Xaml.Media.PenLineJoin.Round;
path.StrokeStartLineCap = Windows.UI.Xaml.Media.PenLineCap.Round;
return(path);
}
public static Windows.UI.Xaml.Shapes.Path CreateBezierPath(Windows.UI.Input.Inking.InkStroke stroke)
{
// Create Bezier geometries using information provided by the stroke's segments
var figure = new Windows.UI.Xaml.Media.PathFigure();
var segments = stroke.GetRenderingSegments().GetEnumerator();
segments.MoveNext();
// First segment is degenerate and corresponds to initial position
figure.StartPoint = segments.Current.Position;
// Now loop through all remaining segments
while (segments.MoveNext())
{
var bs = new Windows.UI.Xaml.Media.BezierSegment();
bs.Point1 = segments.Current.BezierControlPoint1;
bs.Point2 = segments.Current.BezierControlPoint2;
bs.Point3 = segments.Current.Position;
figure.Segments.Add(bs);
}
// Create and initialize the data structures necessary to render the figure
var geometry = new Windows.UI.Xaml.Media.PathGeometry();
geometry.Figures.Add(figure);
var path = new Windows.UI.Xaml.Shapes.Path();
path.Data = geometry;
// Set the stroke's graphical properties, which are controlled by the Path object
path.Stroke = new Windows.UI.Xaml.Media.SolidColorBrush(stroke.DrawingAttributes.Color);
path.StrokeThickness = stroke.DrawingAttributes.Size.Width;
path.StrokeLineJoin = Windows.UI.Xaml.Media.PenLineJoin.Round;
path.StrokeStartLineCap = Windows.UI.Xaml.Media.PenLineCap.Round;
return path;
}
static void AddCurve(PathFigure pathFigure, Curve curve)
{
foreach (ICurve seg in curve.Segments)
{
var ls = seg as LineSegment;
if (ls != null)
{
pathFigure.Segments.Add(new Windows.UI.Xaml.Media.LineSegment {
Point = Common.WpfPoint(ls.End)
});
}
else
{
var ellipse = seg as Ellipse;
if (ellipse != null)
{
pathFigure.Segments.Add(new ArcSegment {
Point = Common.WpfPoint(ellipse.End),
Size = new Size(ellipse.AxisA.Length, ellipse.AxisB.Length),
RotationAngle = Point.Angle(new Point(1, 0), ellipse.AxisA),
IsLargeArc = ellipse.ParEnd - ellipse.ParEnd >= Math.PI,
SweepDirection = !ellipse.OrientedCounterclockwise()
? SweepDirection.Counterclockwise
: SweepDirection.Clockwise
});
}
}
}
}
Geometry CreateGeometryFromMsaglCurve(ICurve iCurve)
{
var pathGeometry = new PathGeometry();
var pathFigure = new PathFigure {
IsClosed = true,
IsFilled = true,
StartPoint = Common.WpfPoint(iCurve.Start)
};
var curve = iCurve as Curve;
if (curve != null)
{
AddCurve(pathFigure, curve);
}
else
{
var rect = iCurve as RoundedRect;
if (rect != null)
{
AddCurve(pathFigure, rect.Curve);
}
else
{
var ellipse = iCurve as Ellipse;
if (ellipse != null)
{
return(new EllipseGeometry {
Center = Common.WpfPoint(ellipse.Center),
RadiusX = ellipse.AxisA.Length,
RadiusY = ellipse.AxisB.Length
});
}
var poly = iCurve as Polyline;
if (poly != null)
{
var p = poly.StartPoint.Next;
do
{
pathFigure.Segments.Add(new Windows.UI.Xaml.Media.LineSegment {
Point = Common.WpfPoint(p.Point)
});
p = p.NextOnPolyline;
} while (p != poly.StartPoint);
}
}
}
pathGeometry.Figures.Add(pathFigure);
return(pathGeometry);
}
Geometry CreateCollapseSymbolPath(Point center, double width)
{
var pathGeometry = new PathGeometry();
var pathFigure = new PathFigure {
StartPoint = Common.WpfPoint(center + new Point(-width, width))
};
pathFigure.Segments.Add(new Windows.UI.Xaml.Media.LineSegment {
Point = Common.WpfPoint(center)
});
pathFigure.Segments.Add(
new Windows.UI.Xaml.Media.LineSegment {
Point = Common.WpfPoint(center + new Point(width, width))
});
pathGeometry.Figures.Add(pathFigure);
return(pathGeometry);
}
// throws ArgumentException if pointerPoint.pointerId is already in live rendering mode
public void EnterLiveRendering(Windows.UI.Input.PointerPoint pointerPoint, Windows.UI.Input.Inking.InkDrawingAttributes drawingAttributes)
{
uint pointerId = pointerPoint.PointerId;
// Create and initialize the data structures necessary to render a polyline in XAML.
var stroke = new Windows.UI.Xaml.Media.PolyLineSegment();
stroke.Points.Add(pointerPoint.Position);
var figure = new Windows.UI.Xaml.Media.PathFigure();
figure.StartPoint = pointerPoint.Position;
figure.Segments.Add(stroke);
var geometry = new Windows.UI.Xaml.Media.PathGeometry();
geometry.Figures.Add(figure);
var path = new Windows.UI.Xaml.Shapes.Path();
path.Data = geometry;
// Set the stroke's graphical properties, which are controlled by the Path object
path.Stroke = new Windows.UI.Xaml.Media.SolidColorBrush(drawingAttributes.Color);
path.StrokeThickness = drawingAttributes.Size.Width;
path.StrokeLineJoin = Windows.UI.Xaml.Media.PenLineJoin.Round;
path.StrokeStartLineCap = Windows.UI.Xaml.Media.PenLineCap.Round;
// Update dictionaries
liveStrokes.Add(pointerId, stroke); // throws ArgumentException if pointerId is already in the dictionary
livePaths.Add(pointerId, path); // throws ArgumentException if pointerId is already in the dictionary
// Add path to render so that it is rendered (on top of all the elements with same ZIndex).
// We want the live render to be on top of the Bezier render, so we set the ZIndex of the elements of the
// live render to 2 and that of the elements of the Bezier render to 1.
render.Children.Add(path);
Windows.UI.Xaml.Controls.Canvas.SetZIndex(path, 2);
}