private void RenderLoadStrips(ILineString ls, double[] loads, double scale = 1)
{
// Get the coordinates
var start = Simplify
? NetTopologySuite.Simplify.DouglasPeuckerLineSimplifier.Simplify(ls.Coordinates, 2 * Map.PixelSize)
: ls.Coordinates;
// Compute the initial offset
if (Offset != 0d)
{
start = RemoveSelfIntersections(_offsetCurveBuilder
.GetOffsetCurve(start, Math.Sign(scale) * Offset * Map.PixelSize), ls.Factory);
}
// All strips
for (var i = 0; i < loads.Length; i++)
{
// cycle if
if (loads[i] == 0)
{
continue;
}
// Compute the offset line
var offset = RemoveSelfIntersections(_offsetCurveBuilder
.GetOffsetCurve(start, scale * loads[i]), ls.Factory);
// Setup coordinate sequence
var pts = new List <Coordinate>(start);
pts.AddRange(offset.Reverse());
pts.Add(start[0]);
// Build the ring
var ring = ls.Factory.CreateLinearRing(pts.ToArray());
// Transform to image coordinates
var gp = ring.TransformToImage(Map);
// Draw the polygon
Brush b;
if (!LoadBrush.TryGetValue(i, out b))
{
b = new HatchBrush(HatchStyle.LargeCheckerBoard, Color.HotPink, Color.Chartreuse);
}
Graphics.FillPolygon(b, gp);
if (FramePen != null)
{
Graphics.DrawPolygon(FramePen, gp);
}
start = offset;
}
}
