Hi,
I have a question on what happens if one sets a list of geometrical
objects that occupy the same parts of space. For example, modifiying
slightly the first example in the Meep tutorial:
(set! geometry-lattice (make lattice (size 16 8 no-size)))
(set! geometry (list
(make block (center 0 0) (size infinity 3 infinity)
(material (make dielectric (epsilon 12))))
(make block (center 0 0) (size infinity 1.5 infinity)
(material (make dielectric (epsilon 6))))
)
)
In this case I have verified that the last object is substituted for the
first object (the waveguide has a dielectric constant of 6 in the center
and 12 at the sides). But to avoid surprises, even if this seems very
trivial, could anyone confirm that this is the designed behaviour of the
program (a later object always substitutes a former object)? I did not find
a statement about it in the Meep reference, although I saw responses of
prof. Johnson in the mailing list that make sense if one assumes the above.
The point is that I want to create some cylinders with elliptical
cross-section, and looking at old posts I read that a way of doing this is
to create some ellipsoids with one very, very long axis (that will
correspond to the cylinder axis) and then taking a slice; and I would take
the slice just by making air blocks.
Thanks in advance for the answer.
Giovanni
--
================================================
Giovanni Piredda
Postdoc - AK Hartschuh
Phone: ++49 - (0) 89/2180-77601
Fax.: ++49 – (0) 89/2180-77188
Room: E2.062
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