private PathSegment TransformSegment(Microsoft.Msagl.Core.Geometry.Curves.ICurve curve)
{
if (curve is Microsoft.Msagl.Core.Geometry.Curves.LineSegment lineSegment)
{
return new LineSegment {
Point = Convert(lineSegment.End)
}
}
;
if (curve is Microsoft.Msagl.Core.Geometry.Curves.CubicBezierSegment bezierSegment)
{
return new BezierSegment
{
Point1 = Convert(bezierSegment.B(1)),
Point2 = Convert(bezierSegment.B(2)),
Point3 = Convert(bezierSegment.End)
}
}
;
if (curve is Microsoft.Msagl.Core.Geometry.Curves.Ellipse ellipse)
{
return(ApproximateEllipticalArcWithBezierCurve_ThisMethodNeedsTesting(ellipse));
}
throw new NotImplementedException(string.Format("Cannot transform {0} of type {1}", curve, curve.GetType().FullName));
}
private IEnumerable <Microsoft.Msagl.Core.Geometry.Curves.ICurve> Flatten(Microsoft.Msagl.Core.Geometry.Curves.ICurve curve)
{
if (curve is Microsoft.Msagl.Core.Geometry.Curves.Curve compositeCurve)
{
return(compositeCurve.Segments.SelectMany(c => Flatten(c)));
}
return(Enumerable.Repeat(curve, 1));
}
public PathFigure Convert(Microsoft.Msagl.Core.Geometry.Curves.ICurve curve)
{
var segments = new PathSegments();
segments.AddRange(Flatten(curve).Select(s => TransformSegment(s)));
return(new PathFigure
{
StartPoint = Convert(curve.Start),
Segments = segments,
IsClosed = false,
IsFilled = false
});
}
