From: Tuukka Lehtonen <tuukka.lehtonen@semantum.fi>
Date: Mon, 18 Jun 2018 10:58:54 +0000 (+0300)
Subject: HistorySampler.sample(HistorySamplerItem2, ...) now uses mipmapped data
X-Git-Tag: v1.43.0~136^2~460
X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=commitdiff_plain;h=e3940e67813aa0988bdd0fe6161500034e6e7518;hp=e3940e67813aa0988bdd0fe6161500034e6e7518

HistorySampler.sample(HistorySamplerItem2, ...) now uses mipmapped data

Implemented selection of sampled history data source based on the
seconds/pixel (= timeWindow / maxSamples) ratio provided to the sampler.
This is one way to attempt not sampling too much data for trend views
that cannot inherently handle large amounts of data.

gitlab #9

Change-Id: I8c67068d6e832d33d4ac3adef270d31f1cb0e722
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