[Clas12_software] new ced

[David Heddle]

version 97.10 is available at no additional cost at

https://userweb.jlab.org/~heddle/ced/builds/

What's new,

1) *The lastest version reads hipo files*.
For now it does not *sniff* the file, so the file extension *must be
".hipo"*.
Not ".Hipo", not ".HIPO", not ".hIpO", and "hippo" is right out of the
question.

2) There is a shell script ced.sh that can be used instead of double
clicking. Try this if the double clicking fails:
*$ source ced.sh*
the reason is that we can give arguments (VM args) concerning memory usage
in the shell script which for some $#$#!!! reason I can't seem to embed in
the jar file manifest (if you know how let me know).

3) There is a feature on the standard views that may be interpreted as a
bug. Or maybe it is a bug. I haven't decided. In recent versions of *ced*
we changed how projection to the constant planes of the standard views was
done. In the old way, we used the geometry package to find the
intersections of wires and slabs (like scintillators) with the constant phi
view plane. If they didn't intersect, they weren't drawn. In the new way we
treat wires and slabs as infinitely long. They always intersect. This has
cause some to say bad things about us.

The U strips all intersect the midplane so they look normal. But V and W,
like OMG! What is happening is that some of those strips do not actualy
interesect the midplane but--if you make them infinitely long they do, and
some of them look far-far away, like they should be passing through the
room of Hall B.

[image: Inline image 1]

Like I said this is (arguably) a feature. If those strips have hits they
(the hits) now show up, where in the previous method they were not drawn. *So
the new way shows more information.* But it is aesthetically challenging
for some.

Maybe we'll switch back, or mark those that don't really intersect in some
unique and special way.

Note that if you rotate the phi slider to the "correct" phi of the event,
the hits should obligingly move into reasonable locations.


-- 
David P. Heddle, Ph.D.
Professor of Physics
Christopher Newport University
Newport News, VA 23606

757.594.8434 (CNU)
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