295 words on Mac OS X 10.5 Leopard
While making the Quartz Composition of yesterday’s post, I noticed a few more things about Quartz Composer which I missed earlier on.
As you can see in the screenshot, it’s fairly easy to orchestrate the time development of several values. You can even do non-linear developments using standard vector graphics editing techniques with tangent directions. The only ‘but’ here is that currently the editor still seems to be a big buggy and the Quartz Composer application can be easily crashed by dragging anchor points around too wildly. I recommend frequent saving of the file while using it.
Quartz Composer’s random number generator always seems to begin with the same number. I wonder how random it actually is.
I mentioned the cool Quartz Composer Visualizer application earlier on. It can be used to display Quartz Compositions across several tiled screens – even if they are attached to different machines. At least in its standard setup the Compositions are rendered separately on the different machines which the application controls. And each of them creates its own random numbers, thus making things inconsistent across screens for my example. No biggie, I suppose, but keeping me from using my composition with the Visualizer without extra effort.
Where did you find a timeline patch with a patch time input? Is there any place to get it. That’s exactly the patch I need. The current one does not have a patch time input on it.
It’s just the normal Timelines patch that comes with Quartz Composer. I think by default it uses the time point of the parent patch. But using the contextual menu on the patch will reveal a ‘Timebase’ submenu which lets you set the timebase to ‘External’. That reveals the ‘Patch Time’ input as you see it in my composition.
Strangely, this option is rather well-hidden.
Thanks a lot. I was so confused about how to restart the timeline in quartz composer. Seems like such a no-brainer for the sample file.
Received data seems to be invalid. The wanted file does probably not exist or the guys at last.fm changed something.