Details
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Type:
RFC
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Status: Withdrawn
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Resolution: Done
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Component/s: DM
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Labels:
Description
This is a non-traditional brainstorming RFC to gather preliminary input prior to design work. The (mostly-)completed design will be RFC'd separately in the future (and I'm not even planning to start that work for several weeks).
My goal is to replace afw::image::Filter with something that:
- minimizes the use of singletons;
- maps to the Gen3 PhysicalFilter and AbstractFilter concepts (probably with separate classes for these);
- has a sensible relationship with cameraGeom (probably just "Camera has a set of PhysicalFilters");
- has a sensible relationship with TransmissionCurve (not obvious; could be "PhysicalFilter has TransmissionCurve" or "PhysicalFilter can be used to retrieve a TransmissionCurve from a calibration repo");
- can be easily mangled into deterministic integer IDs without addition or subtraction of filters breaking old IDs;
- natively supports or can be extended to support sub-filters for DCR-correctable coadds.
More use cases and design ideas welcome.
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Jim Bosch, in DMCCB#4 discussion, this RFC has been proposed to be withdrawn, since it is just speculative and not triggering any action.
Fine; I think I've gathered the information I was going to and will return with an actual proposal in a new RFC.
(I will say, however, that this was useful, and I hope we will not discourage open-ended RFCs like this in the future without providing an alternative - though maybe that's just a community post).
Hi Jim Bosch — I think it's fair to say the DMCCB's position on this was effectively that RFCs are a tool for taking decisions, rather than soliciting open-ended discussions; we'd imagine that CLO would be more appropriate for the latter. I'd be happy to receive thoughts and feedback about whether a CLO post would have got you the results you want in this particular case, and, if not, what we might do about it.
Withdrawing this RFC as discussed.
Pushing this out some more. I have thought a bit about a more concrete proposal and plan to make one, but it's not terribly close to the top of a rather long to-do list.