public static RepresentableGraph CreateVisibilityGraph(
List <DSGeom.Polygon> boundary,
List <DSGeom.Polygon> obstructions)
{
var graph = BaseGraph.ByBoundaryAndInternalPolygons(boundary, obstructions);
var visGraph = RepresentableGraph.ByBaseGraph(graph);
return(visGraph);
}
/// <summary>
/// Computes the Visibility Graph from a base graph using Lee's algorithm.
/// </summary>
/// <param name="baseGraph">Base graph</param>
/// <param name="reduced">Reduced graph returns edges where its vertices belong to different
/// polygons and at least one is not convex/concave to its polygon.</param>
/// <returns name="visGraph">Visibility graph</returns>
public static RepresentableGraph ByBaseGraph(BaseGraph baseGraph, bool reduced = true)
{
if (baseGraph == null)
{
throw new ArgumentNullException("graph");
}
var visGraph = new VisibilityGraph(baseGraph.graph, reduced, true);
var visibilityGraph = new RepresentableGraph()
{
graph = visGraph
};
return(visibilityGraph);
}
public void Tessellate(
IRenderPackage package,
TessellationParameters parameters)
{
if (this.GetType() == typeof(RepresentableGraph))
{
RepresentableGraph visGraph = this as RepresentableGraph;
if (visGraph.Factors != null && visGraph.colorRange != null)
{
visGraph.TessellateVisibilityGraph(package, parameters);
}
else
{
TesselateBaseGraph(package, parameters);
}
}
else
{
TesselateBaseGraph(package, parameters);
}
}
public static Dictionary <string, object> Connectivity(
RepresentableGraph visGraph,
[DefaultArgument("null")] List <DSCore.Color> colours,
[DefaultArgument("null")] List <double> indices)
{
if (visGraph == null)
{
throw new ArgumentNullException("visGraph");
}
VisibilityGraph visibilityGraph = visGraph.graph as VisibilityGraph;
RepresentableGraph graph = new RepresentableGraph()
{
graph = visibilityGraph,
Factors = visibilityGraph.ConnectivityFactor()
};
if (colours != null && indices != null && colours.Count == indices.Count)
{
graph.colorRange = new Dictionary <double, DSCore.Color>();
// Create KeyValuePairs and sort them by index in case unordered.
var pairs = indices.Zip(colours, (i, c) => new KeyValuePair <double, DSCore.Color>(i, c)).OrderBy(kv => kv.Key);
// Adding values to colorRange dictionary
foreach (KeyValuePair <double, DSCore.Color> kv in pairs)
{
graph.colorRange.Add(kv.Key, kv.Value);
}
}
return(new Dictionary <string, object>()
{
{ graphOutput, graph },
{ factorsOutput, graph.Factors }
});
}
