On 2012-05-05, at 7:55 PM, Kyle Sluder wrote: > On May 5, 2012, at 4:46 PM, Jens Alfke <j...@mooseyard.com> wrote: >> >> (IIRC there are some AppKit geometry utility functions that will adjust >> coordinate values to fit pixel boundaries in a resolution-independent way. I >> don’t remember their names offhand.) > -centerScanRect:, -convertRectToBacking: and friends. Which if I understand > correctly you should now *always* use instead of adding half pixels because > of HiDPI. >> Someday every device will have retina-quality graphics and these details >> won’t matter > It still matters because coordinates in Quartz always refer to the infinitely > thin space between device pixels. > > --Kyle Sluder Thanks very much Jens and Kyle and everyone who contributed. Most valuable. From now on I'll be using the the NSView -convertPointFrom/To and -convertRectTo/From methods in their various forms. As for NSView's -centerScanRect I will try to understand where that should be used by examining the code examples. Also NSScreen -convertRectToBacking and-convertRectFromBacking methods as appropriate.
This is my first time digging deeply into graphics. My previous work was primarily DB, network and IOKit related. THanks again and respect…. Peter _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
