[Oberon] Oberon-7 - Circle Segments

[Jörg]

Tomas

 

Just for completeness: ☺

The formula c := (r * 181 + 104) DIV 209; [now with correct rounding] calculates the HourTicks absolutely correctly for all circles with radius “r” up to 780 pixels.

The formula c := (r * 71 + 41) DIV 82; is correct for circles with radius “r” up to 140 pixels. For larger circles it’s good as well, but sometimes off by one pixel.

 

br

Jörg

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.inf.ethz.ch/pipermail/oberon/attachments/20190220/54b7e1b3/attachment.html>