Theocacao: A Three-Pack of Core Animation Samples
A Three-Pack of Core Animation Samples Lucas Newman has posted a collection of three Core Animation sample projects. These examples stand out not only because they actually do interesting things, but the code is well-written and well commented. The three samples are: 1. Wallball — a 3D pong-like game where you bounce the the ball against a backboard which stretches and distorts as the ball makes c
Theocacao: CocoaHeads: Video for Core Animation Intro
Both Lucas and I have some projects that we demoed which aren't available for download right now. For me, it's because there's a difference between code that's ready to demo, and code that's ready to distribute. I think you guys and gals would probably like everything that was demoed, so we'll see if we can make that happen. If you like a lot of pixels, Stephen Zyszkiewicz uploaded the talk in HD
Photoshop-like compositing with Core Animation
If you've ever tried Core Image's compositing filters, you've seen the BIG gotcha : the images are composited one of top of each other and you can't change their position. That means they're stuck at the same position, both cramped at (0, 0) — not very useful unless you're blending same size images. To position two images where you want them and have the top one composited on top of the other one,
Core Animation Phantom Fade
Have you ever seen ghosting when creating layers and animating them to a new position ? I have, and I've been puzzled. In CocoaNav, the frameworks gradually move to the back, and once they're loaded they all move up front on the same plane. Once I messed up so bad to actually see Core Animation fading between the two positions ! Animating squares, this looks like that : You're expecting layers to
how to create a grid of calayers / entries / tonyarnold.com
Update: this is indeed a dodgy method I’ve posted below. I’ll update this post when I can, but you’re better off digging out your 8th grade maths and working out the coordinates of surrounding cells and constraining all edges to each other. Friends don’t let friends blog at 12.30am. So I’ve been puzzling for a few weeks through the dim and darkened alleyways of Leopard’s new Core Animation APIs an
Core Animation Starfield
Here's a little Core Animation sample with 3d layers. It looks better when moving ! :) After learning that core animation doesn't like a root layer with a perspective transform, this sample sets up the perspective transform on a container layer, and stores the CATextLayer layers there. Works pretty well this time ! This uses preferredFrameSize to set the CATextLayer bounds, animates zPosition with
Core Animation culling problems
While playing around with Scott Stevenson's NanoLife, I've wondered 'How would it look in 3d' ? Unfortunately, it looks … pretty bad. Once you setup a projection matrix and give your layers a z position, Core Animation handles your layers as 3D objects. The problem here is culling : deciding which layers are visible on screen. In 2D the problem is trivial : just check the x,y position of the layer
Core Animation Tutorial: Window Shake Effect | Cocoa Is My Girlfriend
Core Animation is really the buzz among Cocoa developers these days and we are no different from the rest. Learning to do simple fades and frame movement is trivial, but figuring out the more complex effects is quite a challenge. We decided to venture out and try to create some really concise examples of effects you might find used in Leopard. And while these effects may not be done with Core Anim
Cocoa for Scientists (XXIV): Core Animation First Steps - MacResearch.org
Arguably the most important change in Leopard was not a user feature, but a developer one: Core Animation. Over the coming years, the way applications look and react to user interaction will change dramatically, and that will be largely due to the ease with which interfaces can be animated with Core Animation. Sure, there will also be overt eye candy, but there will also be lots of more subtle cha
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