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helixish: get sense of phi right
authorIan Jackson <ijackson@chiark.greenend.org.uk>
Sat, 30 Dec 2017 12:34:04 +0000 (12:34 +0000)
committerIan Jackson <ijackson@chiark.greenend.org.uk>
Sat, 30 Dec 2017 12:34:05 +0000 (12:34 +0000)
commit94c25a51f3a6bbfcd93fd04934369235878e8bf9
treeba17c5fd5f921eb739c4ee66f2ce404ac2adf6e3tree | snapshot
parent5755e85cb037b98ef320872d7a425186ce17aa9fcommit | diff
helixish: get sense of phi right

In "Railway problem", phi is the direction we _leave_ Q.  Whereas in
our original representation, we have a direction vector in the
positive sense of the parameter (ie, for Q, the arrival direction).

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
helixish.py diff | blob | history
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