public override void Subdivide(Prism bounds, ISubdivisionGeometry geometry, INamedDataCollection hierarchicalParameters)
{
//Create land parcels
var nodes = CreateParcelNodes(GenerateParcels(bounds.Footprint).ToArray(), bounds.Height).ToArray();
//Set ground height (for nodes which care)
foreach (var grounded in nodes.Select(node => node.Value).OfType <IGrounded>())
{
grounded.GroundHeight = GroundHeight;
}
//Build neighbour set
var neighbours = new NeighbourSet <ISubdivisionContext>();
foreach (var keyValuePair in nodes)
{
foreach (var edge in keyValuePair.Key.Edges)
{
neighbours.Add(new LineSegment2(edge.Start, edge.End), keyValuePair.Value);
}
}
//Associate node with their neighbours (for nodes which care)
foreach (var neighbour in nodes.Where(node => node.Value is INeighbour))
{
((INeighbour)neighbour.Value).Neighbours = CalculateNeighbours(neighbour, neighbours).ToArray();
}
}
private NeighbourSet <RoomPlanSegment> CreateNeighbourSet()
{
var sides = new NeighbourSet <RoomPlanSegment>();
//Add the room sides
foreach (var room in _plan.Rooms)
{
for (ushort i = 0; i < room.OuterFootprint.Count; i++)
{
var a = room.OuterFootprint[i];
var b = room.OuterFootprint[(i + 1) % room.OuterFootprint.Count];
sides.Add(new LineSegment2(a, b), new RoomPlanSegment(room, i));
}
}
return(sides);
}
private IEnumerable <NeighbourInfo> CalculateNeighbours(KeyValuePair <Parcel, ISubdivisionContext> subject, NeighbourSet <ISubdivisionContext> nodes)
{
foreach (var edge in subject.Key.Edges)
{
var query = new LineSegment2(edge.Start, edge.End);
var neighbours = nodes.Neighbours(query, MathHelper.ToRadians(5), 1);
foreach (var neighbour in neighbours)
{
//Do not add self as a neighbour!
if (neighbour.Value.Equals(subject.Value))
{
continue;
}
yield return(new NeighbourInfo(
neighbour.Value,
neighbour.Segment.Transform(WorldTransformation),
neighbour.SegmentOverlapStart,
neighbour.SegmentOverlapEnd,
query.Transform(WorldTransformation),
neighbour.QueryOverlapStart,
neighbour.QueryOverlapEnd
));
}
}
}
