private static MeshDraft GenerateBorder(List <Vector2> roofPolygon, RoofConfig roofConfig)
{
List <Vector3> lowerRing = roofPolygon.ConvertAll(v => v.ToVector3XZ());
List <Vector3> upperRing = roofPolygon.ConvertAll(v => v.ToVector3XZ() + Vector3.up * roofConfig.thickness);
return(new MeshDraft().AddFlatQuadBand(lowerRing, upperRing, false));
}
private static MeshDraft GenerateBorder(List <Vector2> roofPolygon, RoofConfig roofConfig)
{
List <Vector3> lowerRing = roofPolygon.Select(v => v.ToVector3XZ()).ToList();
List <Vector3> upperRing = roofPolygon.Select(v => v.ToVector3XZ() + Vector3.up * roofConfig.thickness).ToList();
var border = MeshDraft.FlatBand(lowerRing, upperRing);
return(border);
}
private static MeshDraft GenerateFlat(List <Vector2> roofPolygon, RoofConfig roofConfig)
{
Vector3 a = roofPolygon[0].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 b = roofPolygon[1].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 c = roofPolygon[2].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 d = roofPolygon[3].ToVector3XZ() + Vector3.up * roofConfig.thickness;
var roofDraft = MeshDraft.Quad(a, d, c, b);
return(roofDraft);
}
public static MeshDraft GenerateHipped(List <Vector2> roofPolygon, RoofConfig roofConfig)
{
Vector3 a = roofPolygon[0].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 b = roofPolygon[1].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 c = roofPolygon[2].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 d = roofPolygon[3].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 ridgeHeight = Vector3.up * HippedRoofHeight;
Vector3 ridgeOffset = (b - a).normalized * 2;
Vector3 ridge0 = (a + d) / 2 + ridgeHeight + ridgeOffset;
Vector3 ridge1 = (b + c) / 2 + ridgeHeight - ridgeOffset;
var roofDraft = MeshDraft.Quad(a, ridge0, ridge1, b);
roofDraft.Add(MeshDraft.Triangle(b, ridge1, c));
roofDraft.Add(MeshDraft.Quad(c, ridge1, ridge0, d));
roofDraft.Add(MeshDraft.Triangle(d, ridge0, a));
return(roofDraft);
}
public static MeshDraft GenerateGabled(List <Vector2> roofPolygon, RoofConfig roofConfig)
{
Vector3 a = roofPolygon[0].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 b = roofPolygon[1].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 c = roofPolygon[2].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 d = roofPolygon[3].ToVector3XZ() + Vector3.up * roofConfig.thickness;
Vector3 ridgeHeight = Vector3.up * GabledRoofHeight;
Vector3 ridge0 = (a + d) / 2 + ridgeHeight;
Vector3 ridge1 = (b + c) / 2 + ridgeHeight;
var roofDraft = MeshDraft.Quad(a, ridge0, ridge1, b);
roofDraft.AddTriangle(b, ridge1, c);
roofDraft.AddQuad(c, ridge1, ridge0, d);
roofDraft.AddTriangle(d, ridge0, a);
return(roofDraft);
}
public static MeshDraft Generate(
List <Vector2> foundationPolygon,
float roofHeight,
RoofConfig roofConfig)
{
List <Vector2> roofPolygon = Geometry.OffsetPolygon(foundationPolygon, roofConfig.overhang);
MeshDraft roofDraft;
switch (roofConfig.type)
{
case RoofType.Flat:
roofDraft = GenerateFlat(roofPolygon, roofConfig);
break;
case RoofType.Gabled:
roofDraft = GenerateGabled(roofPolygon, roofConfig);
break;
case RoofType.Hipped:
roofDraft = GenerateHipped(roofPolygon, roofConfig);
break;
default:
throw new ArgumentOutOfRangeException();
}
if (roofConfig.thickness > 0)
{
roofDraft.Add(GenerateBorder(roofPolygon, roofConfig));
}
if (roofConfig.overhang > 0)
{
roofDraft.Add(GenerateOverhang(foundationPolygon, roofPolygon));
}
roofDraft.Move(Vector3.up * roofHeight);
roofDraft.name = "Roof";
return(roofDraft);
}