[Kst] [Bug 134987] Skipping frames sometimes misses the last point

[Nicolas Brisset]

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http://bugs.kde.org/show_bug.cgi?id=134987         




------- Additional Comments From nicolas.brisset eurocopter com  2006-10-09 12:00 -------
Looking at kstrvector.cpp (which I assume is where the problem lies), I wonder about lines 473-477: why do we need to align start and end frames on skip boundaries ? I think that's what causes the problem, but I'm not sure how to fix it as I'm afraid of collateral damage !
But I noticed something else which I find equally wrong (possibly even worse !): if you select first frame = 2 in the above example for the vector with skip = 25, the first value you get is not the 2nd value in the data file but the 26th or 27th! This is really quite dangerous !
All in all, looking at this file there seem to be so many possibilities and corner cases, plus some "hidden" rounding with implicit casts to (int) that there are probably more weirdnesses...