public void DrawPath(IEnumerable <PathOp> ops, Pen pen = null, Brush brush = null)
{
var bb = new BoundingBoxBuilder();
var s = new D2D1.PathGeometry(factories.D2DFactory);
var figureDepth = 0;
using (var sink = s.Open()) {
foreach (var op in ops)
{
if (op is MoveTo)
{
while (figureDepth > 0)
{
sink.EndFigure(D2D1.FigureEnd.Open);
figureDepth--;
}
var mt = ((MoveTo)op);
sink.BeginFigure(Conversions.ToVector2(mt.Point), D2D1.FigureBegin.Filled);
figureDepth++;
bb.Add(mt.Point);
}
else if (op is LineTo)
{
var lt = ((LineTo)op);
sink.AddLine(Conversions.ToVector2(lt.Point));
bb.Add(lt.Point);
}
else if (op is ArcTo)
{
var ar = ((ArcTo)op);
// TODO: Direct2D Arcs
//sink.AddArc (new D2D1.ArcSegment {
// Size = Conversions.ToSize2F (ar.Radius),
// Point = Conversions.ToVector2 (ar.Point),
// SweepDirection = ar.SweepClockwise ? D2D1.SweepDirection.Clockwise : D2D1.SweepDirection.CounterClockwise,
//});
sink.AddLine(Conversions.ToVector2(ar.Point));
bb.Add(ar.Point);
}
else if (op is CurveTo)
{
var ct = ((CurveTo)op);
sink.AddBezier(new D2D1.BezierSegment {
Point1 = Conversions.ToVector2(ct.Control1),
Point2 = Conversions.ToVector2(ct.Control2),
Point3 = Conversions.ToVector2(ct.Point),
});
bb.Add(ct.Point);
bb.Add(ct.Control1);
bb.Add(ct.Control2);
}
else if (op is ClosePath)
{
sink.EndFigure(D2D1.FigureEnd.Closed);
figureDepth--;
}
else
{
// TODO: More path operations
}
}
while (figureDepth > 0)
{
sink.EndFigure(D2D1.FigureEnd.Open);
figureDepth--;
}
sink.Close();
}
var p = GetBrush(pen);
var b = GetBrush(bb.BoundingBox, brush);
if (b != null)
{
renderTarget.FillGeometry(s, b);
}
if (p != null)
{
renderTarget.DrawGeometry(s, p, (float)pen.Width, GetStrokeStyle(pen));
}
}