Thanks for the reply Achim, I never knew about disabling the background erasing (⌘+k), but I would prefer to keep this enabled as the compositions will be running with transparent backgrounds in their live environment. This should give me a better prediction of what the performance will be like when live?
Just had a go at creating the same effect using the accumulator patch, and successfully emulated the previous composition. I only did this using one of the images though, and am slightly confused as to how I would create the complete grid of images. Regards, Charlie On 31 January 2011 19:36, Achim Breidenbach <ac...@boinx.com> wrote: > Hello Charlie, > > I realized the same behavior of increasing rendering time. As I remember > correctly this is only a glitch in a measurement routine in QuartzComposer. > So pressing command-K switches something off, which then brings the correct > values. > > Another idea for your composition: You can use a "Accumulator" patch to > store the complete grid in a single image and display it with a billboard as > layer 1. Then from a Java Script patch you can control a macro that just > draw a single grid item and its swipe transition. When the transition has > finished, you can store the new image portion in the accumulator and advance > to the next image. If you use the Blend mode of billboard and having swiped > your new image from transparent to opaque you even haven't to know whats > below the one image is, because you draw the accumulator first. > > Best, > > Achim Breidenbach > Boinx Software > > On 31.01.2011, at 13:35, Charlie Francis wrote: > > > Hey, > > > > I was looking to create a grid of images that would transition between > any extra image given in a structure, kind of similar to the iTunes > Screensaver that shows all of your album art in a grid. > > > > I'm not sure if this is the best way to do it, but I've got it working. > First I tried using an iterator, and caching the images, but it was screwing > up on the transition. I changed it to a limited number of images in a grid. > When I was looking at the performance graph I noticed that the execution and > rendering time seems to increase over a few cycles, and then resets, like > it's building something up in memory and then dumping it. I'm not sure what > I should take from the graph, and how accurate it is. > > > > Is there a way to see the source code behind the iTunes Screensaver, as I > think it will give me a good lesson on how to manage multiple images/videos > whilst looking after those precious resources. > > Am I correct in thinking the example screensaver "Security" appears to > take the video input and build 1 single image. Is this a better way of doing > it rather than copy pasta'ing loads of macros? > > > > Regards, > > Charlie > > <picture_rotator.zip> _______________________________________________ > > Do not post admin requests to the list. They will be ignored. > > Quartzcomposer-dev mailing list (Quartzcomposer-dev@lists.apple.com > ) > > Help/Unsubscribe/Update your Subscription: > > > http://lists.apple.com/mailman/options/quartzcomposer-dev/achim%40boinx.com > > > > This email sent to ac...@boinx.com > >
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