public override PointedSubspace IntersectedWith(PointedSubspace other)
{
if (other.Snap(Vector3.zero) == Vector3.zero)
{
return(new PointedSubspace(IntersectedWith(other.subspace), Vector3.zero));
}
if (other.subspace is Subspace1)
{
Vector3?intersect = _intersect_plane_line(
normal, Vector3.zero,
other.point0, ((Subspace1)other.subspace).axis);
if (intersect.HasValue)
{
return(new PointedSubspace(new Subspace0(), intersect.Value));
}
}
else if (other.subspace is Subspace2)
{
Subspace ss = other.subspace.NormalSubspace().JoinedWithVector(normal);
if (ss is Subspace2)
{
Vector3 intersect_normal = ((Subspace2)ss).normal;
Subspace ss2 = IntersectedWithPlane(intersect_normal); /* a Subspace1 */
PointedSubspace pss2 = ss2.IntersectedWith(other);
return(new PointedSubspace(ss.NormalSubspace(), pss2.point0));
}
}
return(PointedSubspace.Void());
}
public override PointedSubspace IntersectedWith(PointedSubspace other)
{
if (other.Snap(Vector3.zero) == Vector3.zero)
{
return(new PointedSubspace(this, Vector3.zero));
}
else
{
return(PointedSubspace.Void());
}
}
public override PointedSubspace IntersectedWith(PointedSubspace other)
{
if (other.Snap(Vector3.zero) == Vector3.zero)
{
return(new PointedSubspace(IntersectedWith(other.subspace), Vector3.zero));
}
if (other.subspace is Subspace2)
{
Vector3?intersect = _intersect_plane_line(
((Subspace2)other.subspace).normal, other.point0,
Vector3.zero, axis);
if (intersect.HasValue)
{
return(new PointedSubspace(new Subspace0(), intersect.Value));
}
}
/* XXX missing special case if other.subspace is a specially aligned Subspace1 */
return(PointedSubspace.Void());
}
