gEDA-dev: World vs. screen coordinates...

[Peter Clifton <pcjc2-at-NOSPAMcam_dot_ac_dot_uk>]

Hi,

Can I just confirm that I'm not insane in thinking Screen coords and
world coords in gschem have an opposite sense of UP and DOWN?

(It could just be that I was coding too late, and got that impression by
mistake... it seems I've corrected some of the bounds functions in my
local branch to make this the case!)


As I have on my piece of paper...

World coordinates increase upwards, e.g. 1000 is higher than 500.

Screen coordinates increas downwards, e.g. 0 is higher than 100.

(Or is it just my imagination? It wouldn't take too many places for it
to be flipped to appear to work fine anyway!)


This "understanding" of mine has come about from debugging as I was
working on the noscreen stuff, and of course is subject to idiot error.

Regards,

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)



_______________________________________________
geda-dev mailing list
geda-dev@moria.seul.org
http://www.seul.org/cgi-bin/mailman/listinfo/geda-dev