On Fri, 24 Apr 2015 13:00:19 -0700 Bill Spitzak <spit...@gmail.com> wrote:
> On 04/24/2015 07:31 AM, Pekka Paalanen wrote: > > > Would it be good to set a rule of thumb, that when you are scaling > > images, first compute the final size, and then compute the > > transformation paramaters for Pixman, regardless from which one you > > start with? > > If I understand what you are asking for, the answer is no. > > When scaling images do not be confused by the pixel size or pixel > centers. The correct transform is the one that places the outer corners > of the source image (ie integers 0,0 and w,h for the entire contents of > a w,h sized image) at the outer corners of the desired destination > quadrilateral. That is exactly what I meant. Thanks, pq _______________________________________________ Pixman mailing list Pixman@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/pixman
