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GeometryExtensions.cs
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GeometryExtensions.cs
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using Xamarin.Forms.Shapes;
using WFoundation = Windows.Foundation;
using WMedia = Windows.UI.Xaml.Media;
namespace Xamarin.Forms.Platform.UWP
{
public static class GeometryExtensions
{
public static WMedia.Geometry ToWindows(this Geometry geometry)
{
WMedia.Geometry wGeometry = null;
if (geometry is LineGeometry)
{
LineGeometry lineGeometry = geometry as LineGeometry;
wGeometry = new WMedia.LineGeometry
{
StartPoint = lineGeometry.StartPoint.ToWindows(),
EndPoint = lineGeometry.EndPoint.ToWindows()
};
}
else if (geometry is RectangleGeometry)
{
var rect = (geometry as RectangleGeometry).Rect;
wGeometry = new WMedia.RectangleGeometry
{
Rect = new WFoundation.Rect(rect.X, rect.Y, rect.Width, rect.Height)
};
}
else if (geometry is EllipseGeometry)
{
EllipseGeometry ellipseGeometry = geometry as EllipseGeometry;
wGeometry = new WMedia.EllipseGeometry
{
Center = ellipseGeometry.Center.ToWindows(),
RadiusX = ellipseGeometry.RadiusX,
RadiusY = ellipseGeometry.RadiusY
};
}
else if (geometry is GeometryGroup)
{
GeometryGroup geometryGroup = geometry as GeometryGroup;
wGeometry = new WMedia.GeometryGroup
{
FillRule = ConvertFillRule(geometryGroup.FillRule)
};
foreach (Geometry children in geometryGroup.Children)
{
WMedia.Geometry winChild = children.ToWindows();
(wGeometry as WMedia.GeometryGroup).Children.Add(winChild);
}
}
else if (geometry is PathGeometry)
{
PathGeometry pathGeometry = geometry as PathGeometry;
WMedia.PathGeometry wPathGeometry = new WMedia.PathGeometry
{
FillRule = ConvertFillRule(pathGeometry.FillRule)
};
foreach (PathFigure xamPathFigure in pathGeometry.Figures)
{
WMedia.PathFigure wPathFigure = new WMedia.PathFigure
{
StartPoint = xamPathFigure.StartPoint.ToWindows(),
IsFilled = xamPathFigure.IsFilled,
IsClosed = xamPathFigure.IsClosed
};
wPathGeometry.Figures.Add(wPathFigure);
foreach (PathSegment pathSegment in xamPathFigure.Segments)
{
// LineSegment
if (pathSegment is LineSegment)
{
LineSegment lineSegment = pathSegment as LineSegment;
WMedia.LineSegment winSegment = new WMedia.LineSegment
{
Point = lineSegment.Point.ToWindows()
};
wPathFigure.Segments.Add(winSegment);
}
// PolylineSegment
if (pathSegment is PolyLineSegment)
{
PolyLineSegment polyLineSegment = pathSegment as PolyLineSegment;
WMedia.PolyLineSegment wSegment = new WMedia.PolyLineSegment();
foreach (var point in polyLineSegment.Points)
{
wSegment.Points.Add(point.ToWindows());
}
wPathFigure.Segments.Add(wSegment);
}
// BezierSegment
if (pathSegment is BezierSegment)
{
BezierSegment bezierSegment = pathSegment as BezierSegment;
WMedia.BezierSegment wSegment = new WMedia.BezierSegment
{
Point1 = bezierSegment.Point1.ToWindows(),
Point2 = bezierSegment.Point2.ToWindows(),
Point3 = bezierSegment.Point3.ToWindows()
};
wPathFigure.Segments.Add(wSegment);
}
// PolyBezierSegment
else if (pathSegment is PolyBezierSegment)
{
PolyBezierSegment polyBezierSegment = pathSegment as PolyBezierSegment;
WMedia.PolyBezierSegment wSegment = new WMedia.PolyBezierSegment();
foreach (var point in polyBezierSegment.Points)
{
wSegment.Points.Add(point.ToWindows());
}
wPathFigure.Segments.Add(wSegment);
}
// QuadraticBezierSegment
if (pathSegment is QuadraticBezierSegment)
{
QuadraticBezierSegment quadraticBezierSegment = pathSegment as QuadraticBezierSegment;
WMedia.QuadraticBezierSegment wSegment = new WMedia.QuadraticBezierSegment
{
Point1 = quadraticBezierSegment.Point1.ToWindows(),
Point2 = quadraticBezierSegment.Point2.ToWindows()
};
wPathFigure.Segments.Add(wSegment);
}
// PolyQuadraticBezierSegment
else if (pathSegment is PolyQuadraticBezierSegment)
{
PolyQuadraticBezierSegment polyQuadraticBezierSegment = pathSegment as PolyQuadraticBezierSegment;
WMedia.PolyQuadraticBezierSegment wSegment = new WMedia.PolyQuadraticBezierSegment();
foreach (var point in polyQuadraticBezierSegment.Points)
{
wSegment.Points.Add(point.ToWindows());
}
wPathFigure.Segments.Add(wSegment);
}
// ArcSegment
else if (pathSegment is ArcSegment)
{
ArcSegment arcSegment = pathSegment as ArcSegment;
WMedia.ArcSegment wSegment = new WMedia.ArcSegment
{
Size = new WFoundation.Size(arcSegment.Size.Width, arcSegment.Size.Height),
RotationAngle = arcSegment.RotationAngle,
IsLargeArc = arcSegment.IsLargeArc,
SweepDirection = arcSegment.SweepDirection == SweepDirection.Clockwise ? WMedia.SweepDirection.Clockwise : WMedia.SweepDirection.Counterclockwise,
Point = arcSegment.Point.ToWindows()
};
wPathFigure.Segments.Add(wSegment);
}
}
}
wGeometry = wPathGeometry;
}
return wGeometry;
}
static WMedia.FillRule ConvertFillRule(FillRule fillRule)
{
return fillRule == FillRule.EvenOdd ? WMedia.FillRule.EvenOdd : WMedia.FillRule.Nonzero;
}
}
}