public static System.Windows.Media.Geometry CreateGeometry(DrawingGroup drawingGroup, SvgImportOptions opts)
{
var geometry = new GeometryGroup {
FillRule = opts.FillRule
};
var defaultPen = new Pen(new SolidColorBrush(System.Windows.Media.Color.FromRgb(0, 0, 0)), 1);
foreach (var drawing in drawingGroup.Children)
{
switch (drawing)
{
case GeometryDrawing gd:
HandleGeometry(gd.Geometry, geometry, gd, opts, defaultPen);
break;
case GlyphRunDrawing grd:
geometry.Children.Add(grd.GlyphRun.BuildGeometry());
break;
case DrawingGroup dg:
var c = new SvgImportOptions {
FillRule = FillRule.EvenOdd,
Smoothness = opts.Smoothness,
UseOutlinedGeometry = opts.UseOutlinedGeometry,
NeverWidenClosedPaths = opts.NeverWidenClosedPaths
};
geometry.Children.Add(CreateGeometry(dg, c));
break;
}
}
geometry.Transform = drawingGroup.Transform;
return(geometry);
}
private static void HandleGeometry(System.Windows.Media.Geometry g, GeometryGroup geometry, GeometryDrawing gd, SvgImportOptions opts, Pen defaultPen)
{
switch (g)
{
case CombinedGeometry cg:
geometry.Children.Add(cg);
break;
case EllipseGeometry eg:
if (gd.Pen != null && !opts.NeverWidenClosedPaths)
{
geometry.Children.Add(eg.GetWidenedPathGeometry(gd.Pen, opts.Smoothness, ToleranceType.Absolute).GetOutlinedPathGeometry(opts.Smoothness, ToleranceType.Absolute));
}
else
{
geometry.Children.Add(eg);
}
break;
case GeometryGroup gg:
foreach (var c in gg.Children)
{
HandleGeometry(c, geometry, gd, opts, defaultPen);
}
break;
case LineGeometry lg:
geometry.Children.Add(lg.GetWidenedPathGeometry(gd.Pen, opts.Smoothness, ToleranceType.Absolute));
break;
case PathGeometry pg:
for (int i = pg.Figures.Count - 1; i >= 0; i--)
{
if (!pg.Figures[i].IsClosed || (gd.Pen != null && !opts.NeverWidenClosedPaths))
{
var penToUse = gd.Pen ?? defaultPen;
pg.AddGeometry(new PathGeometry(new List <PathFigure> {
pg.Figures[i]
})
.GetWidenedPathGeometry(penToUse, opts.Smoothness, ToleranceType.Absolute)
.GetOutlinedPathGeometry(opts.Smoothness, ToleranceType.Absolute));
pg.Figures.RemoveAt(i);
}
}
geometry.Children.Add(pg);
break;
case RectangleGeometry rg:
if (gd.Pen != null && !opts.NeverWidenClosedPaths)
{
geometry.Children.Add(rg.GetWidenedPathGeometry(gd.Pen, opts.Smoothness, ToleranceType.Absolute).GetOutlinedPathGeometry(opts.Smoothness, ToleranceType.Absolute));
}
else
{
geometry.Children.Add(rg);
}
break;
case StreamGeometry sg:
geometry.Children.Add(sg);
break;
default:
geometry.Children.Add(gd.Geometry);
break;
}
}