On Thu, 2010-06-24 at 19:46 +0200, donn wrote: > On 24/06/2010 16:13, Emmanuele Bassi wrote: > > use the set_anchor_point() method of clutter.Actor - but be aware of its > > caveats. > I have been using it, but it seems to do half the job. Is there any way > to transform the space within in Actor so that I get a classic > coordinate axis with 0,0 in the middle?
the actor's coordinate space is always relative to the parent's reference point; this is usually the top-left corner but it can be moved using the anchor point API. > (Such that when I add other Actors, or draw with Cairo, they obey that > transform.) Cairo drawing has nothing to do with Clutter: you have to change the Cairo transformations with the Cairo API. > I am probably not making myself clear, this comes from my general > mathematical muddle, sorry. no, I think the "muddle" is not mathematical - it's just a terminology issue. the documentation for ClutterActor explains the coordinate space and some terminology, plus the order of transformations applied when painting: http://docs.clutter-project.org/docs/clutter/stable/ClutterActor.html ciao, Emmanuele. -- Emmanuele Bassi, Open Source Software Engineer Intel Open Source Technology Center _______________________________________________ clutter-app-devel-list mailing list [email protected] http://lists.clutter-project.org/listinfo/clutter-app-devel-list
