D26687: Improvements to the linear focus algorithm--v3

[Hy Murveit]

murveit created this revision.
murveit added a reviewer: mutlaqja.
Herald added a project: KDE Edu.
Herald added a subscriber: kde-edu.
murveit requested review of this revision.

REVISION SUMMARY
  Don't terminate the first-pass search if the samples are improving.
  Simplify the start-position choice, and don't move quite as far out.
  Don't skip samples if the HFR is <= 2.5
  Don't use the polynomial min value as the value to search for, rather the min sample so far.

TEST PLAN
  As before, use the simulator, see that it reaches focus starting from 50000, 60000 and 20000 with
  Linear set as the focus algorithm, and step size 1500 and full field

REPOSITORY
  R321 KStars

BRANCH
  linear-focus-v3 (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D26687

AFFECTED FILES
  kstars/ekos/focus/focus.ui
  kstars/ekos/focus/focusalgorithms.cpp

To: murveit, mutlaqja
Cc: kde-edu, narvaez, apol
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