/// <summary>
/// Calculate intersection of all footprints in the given set of floors (converted into the space of this floor)
/// </summary>
/// <param name="floors"></param>
/// <returns></returns>
private IReadOnlyList <Vector2> IntersectionOfFootprints(IReadOnlyList <IFloor> floors)
{
Contract.Requires(floors != null);
Contract.Ensures(Contract.Result <IReadOnlyList <Vector2> >() != null);
var c = new Clipper();
//Transform all floor footprints into the space of this floor, and intersect them
//This is the allowable space for placing a new vertical element between these floors
var results = c.IntersectAll(floors
.Select(f => f
.Bounds
.Footprint
.Select(a => Vector3
.Transform(a.X_Y(0), f.InverseWorldTransformation * WorldTransformation)
.XZ()
)
)
).ToArray();
//Return the one with the largest area
return(results
.Select(a => a.ToArray())
.MaxItem(a => Math.Abs(a.Area())));
}
