On Sun, Sep 16, 2007 at 02:53:56PM +0200, Andre Poenitz wrote: > On Sun, Sep 16, 2007 at 02:42:11PM +0200, Tommaso Cucinotta wrote: > > And, what about ParagraphMetrics.position_, ascent > > and discent ? > > > > Ok, they're y coords, they represent the paragraph vertical > > dimension and position, but I couldn't really figure out what > > are they relative to, and why I always see in the code > > *) position()-ascent() > > *) position()+descent() > > > > Thanx again, bye, > > Because we always measure from some base line, so the top of something > would be y + asc, and the bottom y - des.
The baseline is like in LaTeX, the line the letter shapes rests on, so for the letter p it would be the lower edge of the arc, like _p_. - Martin
