Vladimir Prus wrote:
Stefan Seefeld wrote:
Device coordinates are not ok to determine object size, because that means that objects have differing sizes on different output devices (multiple screens, printers, etc.) and so users wrongly tweak resolution to get back their wanted object sizes.
You should never specify object size at all. The size of main window should be set the GUI library, or set as proportion of screen size. The child windows should be laid out by GUI or resizes as proportion of main windows size. So, you don't care what unit is used, since you never specify absolute sizes.
I think you are mising each other by miles. Volodya, as much as I want to and tried to, I can't understand what you are trying to say.
So, I believe that the ideal coordinate system unit is nothing more that "int".
For vector graphics, that would be float/double (or fixed-point). Cheers, -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net