public void Draw(DrawingContext context, DrawingArgs args)
{
context.PushClip(new RectangleGeometry(args.RenderBounds));
if (m_IsDirty || args.RequiresFullRedraw)
{
m_LonePoints.Clear();
System.Windows.Media.StreamGeometry geo = new StreamGeometry();
using (var c = geo.Open())
{
Point? figureStart = null;
int pointCount = 0; //point in the figure
if (Values.Count() == 1 && Values.First().HasValue)
{
m_LonePoints.Add(Values.First().Value);
}
else
{
foreach (var p in Values)
{
if (p.HasValue)
{
if (!figureStart.HasValue)
{
figureStart = p.Value;
c.BeginFigure(figureStart.Value, false, false);
pointCount = 1;
}
else
{
c.LineTo(p.Value, true, true);
pointCount++;
}
}
else
{
//detect lone points and draw a cross
if (pointCount == 1)
{
m_LonePoints.Add(figureStart.Value);
}
figureStart = null;
}
}
}
}
m_Geo = geo;
m_IsDirty = false;
}
m_Geo.Transform = args.Transform;
context.DrawGeometry(null, Pen, m_Geo);
var radius = Pen.Thickness;
foreach (var p in m_LonePoints)
{
context.DrawEllipse(m_Pen.Brush, null, args.Transform.Transform(p), radius, radius);
}
}
public void Draw(System.Windows.Media.DrawingContext context, DrawingArgs args)
{
double lineWidth = 1;
context.PushClip(new RectangleGeometry(args.RenderBounds));
var transformdPos = args.Transform.Transform(new Point(0, Position)).X;
Point start = new Point(transformdPos, args.RenderBounds.Top);
Point end = new Point(transformdPos, args.RenderBounds.Bottom);
var offset = lineWidth / 2;
context.PushGuidelineSet(new GuidelineSet(
new[] { start.X + offset, end.X + offset },
new[] { start.Y + offset, end.Y + offset }));
context.DrawLine(new Pen(new SolidColorBrush(Color), lineWidth), start, end);
context.Pop();
}
