public static Dictionary <string, object> BuildPolygons(List <Line> lines)
{
if (lines == null)
{
throw new ArgumentNullException("lines");
}
if (lines.Count < 2)
{
throw new ArgumentException("Needs 2 or more lines", "lines");
}
BaseGraph g = BaseGraph.ByLines(lines);
g.graph.BuildPolygons();
var gPolygons = g.graph.Polygons;
List <Polygon> dsPolygons = new List <Polygon>();
List <Line> dsLines = new List <Line>();
List <gEdge> polygonEdges = new List <gEdge>();
foreach (gPolygon gP in gPolygons)
{
var points = gP.Vertices.Select(v => DSPoint.ByCoordinates(v.X, v.Y, v.Z)).ToList();
if (gP.IsClosed)
{
dsPolygons.Add(Polygon.ByPoints(points));
}
else if (gP.Edges.Count > 1)
{
foreach (gEdge edge in gP.Edges)
{
DSPoint start = Points.ToPoint(edge.StartVertex);
DSPoint end = Points.ToPoint(edge.EndVertex);
dsLines.Add(Line.ByStartPointEndPoint(start, end));
}
}
else
{
DSPoint start = Points.ToPoint(gP.Edges.First().StartVertex);
DSPoint end = Points.ToPoint(gP.Edges.First().EndVertex);
dsLines.Add(Line.ByStartPointEndPoint(start, end));
}
}
return(new Dictionary <string, object>()
{
{ "polygons", dsPolygons },
{ "ungrouped", dsLines }
});
}
