public IEnumerable <Face> GetBoxFaces()
{
var faces = new List <Face>();
if (Children.Any())
{
return(faces);
}
var box = BoundingBox.GetBoxFaces();
var dummySolid = new Solid(-1)
{
IsCodeHidden = IsCodeHidden,
IsRenderHidden2D = IsRenderHidden2D,
IsSelected = IsSelected,
IsRenderHidden3D = IsRenderHidden3D,
IsVisgroupHidden = IsVisgroupHidden
};
foreach (var ca in box)
{
var face = new Face(0)
{
Plane = new Plane(ca[0], ca[1], ca[2]),
Colour = Colour,
IsSelected = IsSelected,
Parent = dummySolid
};
face.Vertices.AddRange(ca.Select(x => new Vertex(x, face)));
face.UpdateBoundingBox();
faces.Add(face);
}
return(faces);
}
public static Solid CreateFromIntersectingPlanes(IEnumerable <Plane> planes, IDGenerator generator)
{
var solid = new Solid(generator.GetNextObjectID());
var list = planes.ToList();
for (var i = 0; i < list.Count; i++)
{
// Split the polygon by all the other planes
var poly = new Polygon(list[i]);
for (var j = 0; j < list.Count; j++)
{
if (i != j)
{
poly.Split(list[j]);
}
}
// The final polygon is the face
var face = new Face(generator.GetNextFaceID())
{
Plane = poly.Plane, Parent = solid
};
face.Vertices.AddRange(poly.Vertices.Select(x => new Vertex(x.Round(2), face))); // Round vertices a bit for sanity
face.UpdateBoundingBox();
face.AlignTexture();
solid.Faces.Add(face);
}
// Ensure all the faces point outwards
var origin = solid.GetOrigin();
foreach (var face in solid.Faces)
{
if (face.Plane.OnPlane(origin) >= 0)
{
face.Flip();
}
}
solid.UpdateBoundingBox();
return(solid);
}