public static GraphicsPath CreatePath(SvgPolylineElement element)
{
GraphicsPath gp = new GraphicsPath();
ISvgPointList list = element.AnimatedPoints;
ulong nElems = list.NumberOfItems;
PointF[] points = new PointF[nElems];
for (uint i = 0; i < nElems; i++)
{
points[i] = new PointF((float)list.GetItem(i).X, (float)list.GetItem(i).Y);
}
gp.AddLines(points);
string fillRule = element.GetPropertyValue("fill-rule");
if (fillRule == "evenodd")
{
gp.FillMode = FillMode.Alternate;
}
else
{
gp.FillMode = FillMode.Winding;
}
return(gp);
}
public Geometry CreateGeometry(SvgPolylineElement element)
{
ISvgPointList list = element.AnimatedPoints;
ulong nElems = list.NumberOfItems;
if (nElems == 0)
{
return(null);
}
PointCollection points = new PointCollection((int)nElems);
for (uint i = 0; i < nElems; i++)
{
ISvgPoint point = list.GetItem(i);
points.Add(new Point(Math.Round(point.X, 4), Math.Round(point.Y, 4)));
}
PolyLineSegment polyline = new PolyLineSegment();
polyline.Points = points;
PathFigure polylineFigure = new PathFigure();
polylineFigure.StartPoint = points[0];
polylineFigure.IsClosed = false;
polylineFigure.IsFilled = true;
polylineFigure.Segments.Add(polyline);
PathGeometry geometry = new PathGeometry();
string fillRule = element.GetPropertyValue("fill-rule");
string clipRule = element.GetAttribute("clip-rule");
if (!string.IsNullOrWhiteSpace(clipRule) &&
string.Equals(clipRule, "evenodd") || string.Equals(clipRule, CssConstants.ValNonzero))
{
fillRule = clipRule;
}
if (fillRule == "evenodd")
{
geometry.FillRule = FillRule.EvenOdd;
}
else if (fillRule == CssConstants.ValNonzero)
{
geometry.FillRule = FillRule.Nonzero;
}
geometry.Figures.Add(polylineFigure);
return(geometry);
}
protected override void RenderPolyline(CanvasDrawingSession session, SvgPolylineElement element)
{
using (var builder = new CanvasPathBuilder(this.ResourceCreator))
{
var begin = element.Points.First();
builder.BeginFigure(begin.X, begin.Y);
foreach (var point in element.Points.Skip(1))
{
builder.AddLine(point.X, point.Y);
}
builder.EndFigure(CanvasFigureLoop.Open);
using (var geometry = CanvasGeometry.CreatePath(builder))
{
this.RenderGeometory(session, geometry, element.Transform.Result, element.Style);
}
}
}
public void Visit(ISvgPolylineElement element)
{
ISvgPointList list = element.AnimatedPoints;
ulong nElems = list.NumberOfItems;
SvgPolylineElement pe = element as SvgPolylineElement;
if (nElems == 0 || pe == null)
{
return;
}
PointCollection points = new PointCollection((int)nElems);
for (uint i = 0; i < nElems; i++)
{
ISvgPoint point = list.GetItem(i);
points.Add(new Point(Math.Round(point.X, 4), Math.Round(point.Y, 4)));
}
PolyLineSegment polyline = new PolyLineSegment();
polyline.Points = points;
PathFigure polylineFigure = new PathFigure();
polylineFigure.StartPoint = points[0];
polylineFigure.IsClosed = false;
polylineFigure.IsFilled = true;
polylineFigure.Segments.Add(polyline);
PathGeometry geometry = new PathGeometry();
FillRule fillRule;
if (TryGetFillRule(pe, out fillRule))
{
geometry.FillRule = fillRule;
}
geometry.Figures.Add(polylineFigure);
var shape = WrapGeometry(geometry, element);
DisplayShape(shape, element);
}
public virtual void VisitPolylineElement(SvgPolylineElement element) => DefaultVisit(element);
public override SvgPathSegList VisitPolylineElement(SvgPolylineElement element) => CreatePointsPath(element.Points, false);
public override void VisitPolylineElement(SvgPolylineElement element) => VisitPathSegList(element, element.ConvertToPathSegList());
public override void VisitPolylineElement(SvgPolylineElement element)
{
base.VisitPolylineElement(element);
VisitSvgGeometryElement(element);
}
protected abstract void RenderPolyline(TSession session, SvgPolylineElement element);
