public static (PolyhedralSurface polyhedral, List <string> colors) MakeBuilding(Polygon footprint, double fromZ, double height, BuildingStyle buildingStyle)
{
var colors = new List <string>();
var polyhedral = new PolyhedralSurface();
polyhedral.Dimension = Dimension.Xyz;
polyhedral.Geometries.Add(GetPolygonZ(footprint, fromZ));
polyhedral.Geometries.Add(GetPolygonZ(footprint, fromZ + height));
if (buildingStyle.Storeys == null)
{
var walls = MakeWalls(footprint, fromZ, height - fromZ);
polyhedral.Geometries.AddRange(walls);
}
else
{
{
foreach (var storey in buildingStyle.Storeys)
{
var walls = MakeWalls(footprint, fromZ + storey.From, storey.To - storey.From);
polyhedral.Geometries.AddRange(walls);
}
}
}
var stream = new MemoryStream();
polyhedral.Serialize <WkbSerializer>(stream);
var wkb = stream.ToArray();
var triangulatedWkb = Triangulator.Triangulate(wkb);
var polyhedralNew = (PolyhedralSurface)Geometry.Deserialize <WkbSerializer>(triangulatedWkb);
foreach (var polygon in polyhedralNew.Geometries)
{
var normal = polygon.GetNormal();
if (Math.Abs(normal.X) > Math.Abs(normal.Y) && Math.Abs(normal.X) > Math.Abs(normal.Z) ||
(Math.Abs(normal.Y) > Math.Abs(normal.Z)))
{
// (yz) projection
if (buildingStyle.WallsColor == null)
{
// use storeys
var storeyColor = GetStoreyColor(polygon, buildingStyle.Storeys);
colors.Add(storeyColor);
}
else
{
colors.Add(buildingStyle.WallsColor);
}
}
else
{
// (xy) projextion
if (polygon.ExteriorRing.Points[0].Z == fromZ)
{
// floor
colors.Add(buildingStyle.FloorColor);
}
else
{
// roof
colors.Add(buildingStyle.RoofColor);
}
}
}
return(polyhedralNew, colors);
}
