internal static IReadOnlyList<Line> CreateOffsetLines(IReadOnlyList<Line> lines, double offset)
{
var result = new Line[lines.Count];
for (var i = 0; i < lines.Count; i++)
{
var line = lines[i].Offset(offset);
if (i > 0)
{
var previous = result[i - 1];
var extended = previous.TrimOrExtendEndWith(line);
if (extended == null)
{
continue;
}
previous = extended.Value;
result[i - 1] = previous;
line = new Line(previous.EndPoint, line.EndPoint);
}
result[i] = line;
}
return result;
}
private static PathGeometry CreatePath(Line l1, Line l2)
{
var geometry = new PathGeometry();
var figure = new PathFigure
{
StartPoint = l1.StartPoint,
IsClosed = true,
IsFilled = true,
};
var polyLineSegment = new PolyLineSegment();
polyLineSegment.Points.Add(l1.EndPoint);
polyLineSegment.Points.Add(l2.EndPoint);
polyLineSegment.Points.Add(l2.StartPoint);
figure.Segments.Add(polyLineSegment);
geometry.Figures.Add(figure);
return geometry;
}
