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http://www.openoffice.org/issues/show_bug.cgi?id=105459
User aw changed the following:
What |Old value |New value
================================================================================
Status|NEW |STARTED
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------- Additional comments from [email protected] Wed Oct 7 15:08:09 +0000
2009 -------
AW: Thanks for the Bugdoc. The problem is the mathematical background. For
visualisation, not really a circle is used, but four bezier segments with a
layout practically all graphic programs use. That bezier segment for a quarter
circle is a good approach for a circle, but mathematically not 100% exact (which
is AFAIK impossible). That segment is now split relative between 0.0 and 1.0
where for this split the wanted split angle is used. This gives very slight
differences since the relationship between the distance of the bezier and the
angle is not linear (but pretty close, the results are not that bad).
I will have to check in the literature if there is a correction term for this.
If yes, the split value between 0.0 and 1.0 could be adapted with the knowledge
that it's meant to be a circle segment...
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