public static IThingGraph BackGraph(this IGraphSceneMesh <IVisual, IVisualEdge> mesh, Iori iori)
{
IThingGraph thingGraph = null;
var backHandler = mesh.BackHandler <IThing, ILink> ();
Func <IThingGraph, IThingGraph> register = s => {
if (s == null)
{
return(null);
}
var g = backHandler.WrapGraph(s) as IThingGraph;
backHandler.RegisterBackGraph(g);
return(g);
};
if (iori != null)
{
thingGraph = backHandler
.BackGraphs
.Select(g => new { Iori = GetIori(g), Graph = g })
.Where(i => i.Iori != null && i.Iori.ToString() == iori.ToString())
.Select(i => i.Graph as IThingGraph)
.FirstOrDefault();
if (thingGraph == null)
{
thingGraph = register(ThingMeshHelper.OpenGraph(iori));
}
}
if (thingGraph == null && iori == null)
{
Trace.WriteLine("Warning! iori is null!");
thingGraph = register(new ThingGraph());
}
return(thingGraph);
}
public static bool HasBackGraph(this IGraphSceneMesh <IVisual, IVisualEdge> mesh)
{
var backHandler = mesh.BackHandler <IThing, ILink> ();
return(backHandler.BackGraphs.Any());
}
