On 04/20/2011 08:28 AM, Peter Hutterer wrote: > The two directions returned by this calculation are always the two boundary > conditions. Since we don't do quadrants but octants, the flagged ones are > 45°, not 90°. e.g. an angle of 35° flags E and NE. > Yes, so 2 flagged directions cover an angle of 90 degrees. I agree the wording can be improved, but I'd rather do "45 degree each" or something like it.
Cheers, Simon > Signed-off-by: Peter Hutterer <peter.hutte...@who-t.net> > --- > dix/ptrveloc.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/dix/ptrveloc.c b/dix/ptrveloc.c > index e95ccbe..50ad22a 100644 > --- a/dix/ptrveloc.c > +++ b/dix/ptrveloc.c > @@ -486,7 +486,7 @@ DoGetDirection(int dx, int dy){ > /* find direction. We avoid r to become negative, > * since C has no well-defined modulo for such cases. */ > r = (r+(M_PI*2.5))/(M_PI/4); > - /* this intends to flag 2 directions (90 degrees), > + /* this intends to flag 2 directions (45 degrees), > * except on very well-aligned mickeys. */ > i1 = (int)(r+0.1) % 8; > i2 = (int)(r+0.9) % 8; _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel