On Fri, 14 Oct 2022 10:07:19 +0200 Hans Hagen via ntg-context <ntg-context@ntg.nl> wrote:
> So you suggest to add atantwo? As side note, you can redure your > definition to: > > vardef atantwo(expr dy, dx) = > if dx == 0 : > if dy < 0 : - fi pi / 2 > else : > atan(dy/dx) if dx > 0 : if dy < 0 : - else : + fi pi fi > fi > enddef ; > > going further makes us end up in an one-line obscurity An absurdity, as further discussion on this thread has shown: atan is derived from angle, which is essentially atan2. There is no need to circle around. As a side point, I now use MP doubleprecision mode by default, although I do believe that it is still preferable to use classic scaled integer mode (and minifun) for text graphical embellishments. The only practical point to consider when using doubleprecision mode for me is the need to explicitly use format with "decimal i" to round the text rendering of numbers. Alan ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________
