protected virtual SLExpression VisitPolygonFromLines(PolygonFromLinesExpression polygonFromLinesExpression)
{
var lines = polygonFromLinesExpression.Lines.Select(Visit).ToArray();
if (HasChanged(lines, polygonFromLinesExpression.Lines))
{
return(new PolygonFromLinesExpression
{
Lines = lines.Cast <LineExpression>().ToArray(),
});
}
return(polygonFromLinesExpression);
}
public XElement ConvertPolygon(PolygonFromLinesExpression polygon)
{
var lines = polygon.Lines.Cast <TwoPointsLineExpression>().ToArray();
return(new XElement("g",
new XAttribute("stroke", "green"),
new XAttribute("stroke-width", "0.01"),
lines
.Select(l => new
{
P1 = (CoordinatesPointExpression)l.Point1,
P2 = (CoordinatesPointExpression)l.Point2,
})
.Select(l => new XElement("line",
new XAttribute("x1", l.P1.X),
new XAttribute("y1", l.P1.Y),
new XAttribute("x2", l.P2.X),
new XAttribute("y2", l.P2.Y)))
.ToArray()));
}
protected override SLExpression VisitPolygonFromLines(PolygonFromLinesExpression polygonFromLinesExpression)
{
if (LeavePolygonAsLines)
{
return(polygonFromLinesExpression);
}
var points = new List <PointExpression>();
var lines = polygonFromLinesExpression.Lines.Select(Visit).Cast <TwoPointsLineExpression>().ToArray();
lines.Aggregate(lines.Last(), (l1, l2) =>
{
points.Add(GetIntersectionPoint(l1, l2));
return(l2);
});
return(new PolygonFromPointsExpression
{
Points = points.ToArray(),
});
}
protected override SLExpression VisitPolygonFromLines(PolygonFromLinesExpression polygonFromLinesExpression)
{
this.PolygonLines = polygonFromLinesExpression.Lines;
return(base.VisitPolygonFromLines(polygonFromLinesExpression));
}
protected override SLExpression VisitPolygonFromLines(PolygonFromLinesExpression polygonFromLinesExpression)
{
PolygonsFromLines.Add(polygonFromLinesExpression);
return(polygonFromLinesExpression);
}