directional tagging

[simbilod]

add a way to tag surfaces of entities depending on their normal direction

e.g.

PolySurface(...,
        physical_name="physical",
        prefix_to_normalspec = {
"north_": [NormalSpec(vector=(0,1), angle_tol=1)]
}
    )

should return interfaces where "physical" is replaced by "north_physical" if the line normal falls within 1 degree of planar angle of the (0,1) vector

or

Prism(...,
        physical_name="physical",
        prefix_to_normalspec = {
"top_": [NormalSpec(vector=(0,0,1), angle_tol=1)],
"sidewall_": [NormalSpec(vector=(cos(theta),sin(theta,0), angle_tol=88) for theta in [0, 90, 180, 270]],
}
    )

should return interfaces where "physical" is replaced by "top_physical" if the surface normal falls within 1 degree of solid angle of the (0,0,1) vector and "sidewall_physical" if the surface normal falls within 88 degree solid angle of any east, west, north, or south vector

Ideally, ResolutionSpecs can also filter by direction like this