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Creating a screensaver with sliding/fading images
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Creating a screensaver with sliding/fading images


  • Subject: Creating a screensaver with sliding/fading images
  • From: Mattias Arrelid <email@hidden>
  • Date: Tue, 7 Nov 2006 13:58:12 +0100

Hi everyone,

Me and a friend have been busy lately, trying to create a basic screensaver similar to the native ones that Apple provides with OS X (like "Beach", "Abstract" etc.). Our intention is to achieve the same visual result, but with the additional ability to specify specific providers (e.g. getting the images from Flickr, or why not Google Images) - providing the screensaver's render engine with images. Our efforts so far can be found at our SVN server, using the trac address below...

http://trac.hunch.se/PhotoFeeder

Until now we've played around with Core Image, Quartz and NSImage but we're still unsure which approach is the most "efficient" one. We want the screensaver to have the lowest possible CPU load, while still offering smooth translations/transitions. Monitoring e.g. "Beach" shows almost no CPU load... exactly what we want!

Any tips on how to implement efficient translations/transitions are more than welcome. Tutorials, example code... whatever, everything is welcome :)

Thanks in advance!

/ Mattias
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