private void CreatePrimaryFacades(Footprint footprint, IEnumerable <Section> sections, ICollection <IBuildingFacade> results)
{
for (var sideIndex = 0; sideIndex < footprint.Facades.Count; sideIndex++)
{
//Get start and end point of this wall
var sideStart = footprint.Shape[sideIndex];
var sideEnd = footprint.Shape[(sideIndex + 1) % footprint.Shape.Count];
//find which section this side is for
var sideSegment = new LineSegment2(sideStart, sideEnd).Line;
var maybeSection = (from s in sections
let aP = sideSegment.ClosestPointDistanceAlongLine(s.ExternalLineSegment.Start) * sideSegment.Direction + sideSegment.Position
let aD = Vector2.Distance(aP, s.ExternalLineSegment.Start)
where aD < 0.1f
let bP = sideSegment.ClosestPointDistanceAlongLine(s.ExternalLineSegment.End) * sideSegment.Direction + sideSegment.Position
let bD = Vector2.Distance(bP, s.ExternalLineSegment.End)
where bD < 0.1f
let d = aD + bD
orderby d
select s).Cast <Section?>().FirstOrDefault();
//Failed to find a section, this can happen when wall segments are so small the two corner segments either end completely cover the actual wall
if (!maybeSection.HasValue)
{
continue;
}
var section = maybeSection.Value;
//There are multiple facades for any one wall section, iterate through them and create them
foreach (var facade in footprint.Facades[sideIndex])
{
//Sanity check that the facade does not underrun the valid range
//We can't sanity check overrun (easily) because that's based on the start of the *next* footprint
if (facade.Bottom < footprint.BottomIndex)
{
throw new InvalidOperationException(string.Format("Facade associated with wall at floor {0} attempted to place itself at floor {1}", footprint.BottomIndex, facade.Bottom));
}
var bot = _floors[facade.Bottom].FloorAltitude;
var top = _floors[facade.Top].FloorAltitude + _floors[facade.Top].Bounds.Height;
var mid = (bot + top) * 0.5f;
var prism = new Prism(top - bot, section.Inner1, section.Inner2, section.Outer1, section.Outer2);
//Create a configurable facade in the space
var configurableNode = (ConfigurableFacade)CreateChild(prism, Quaternion.Identity, new Vector3(0, mid, 0), new ScriptReference(typeof(ConfigurableFacade)));
configurableNode.Section = section;
//Create the specified facade in the *same* space
//This facade is just a proxy which passes all it's stamps to the configurable facade (created above)
var externalFacade = (BaseBuildingFacade)CreateChild(prism, Quaternion.Identity, new Vector3(0, mid, 0), facade.Script);
externalFacade.Facade = configurableNode;
externalFacade.Section = section;
externalFacade.BottomFloorIndex = facade.Bottom;
externalFacade.TopFloorIndex = facade.Top;
results.Add(externalFacade);
//Make sure the building facade subdivides before the configurable facade (this ensures it can configure the facade)
configurableNode.AddPrerequisite(externalFacade, true);
//Make sure floors subdivide before configurable facade (this ensures it too can configure the facade)
for (var i = externalFacade.BottomFloorIndex; i <= externalFacade.TopFloorIndex; i++)
{
configurableNode.AddPrerequisite(_floors[i], false);
}
//Make sure the building facade subdivides before the floor (this ensures the floor can see the effects of the facade)
for (var i = externalFacade.BottomFloorIndex; i <= externalFacade.TopFloorIndex; i++)
{
_floors[i].AddPrerequisite(externalFacade, true);
}
}
}
}