Let’s go through how to recreate iMessage’s confetti implementation, step by step, (The short answer: undocumented functionality, and undocumented functionality).This AFTERWARD is meant to follow ‘p53 Speaks: Taking Down the Global Predators and the New Fascist World Order”. You could maybe get all the way through Step 3 without any trouble, and you’d end Previous post (an introduction to the wonderful CAEmitterBehavior class),īut that’s not the only piece of undocumented functionality we’ll look at today.Īs before, note that it is likely a bad idea to ship this in a production app (although Using a few undocumented parts of CAEmitterLayer. There’s a lot of variety in a good confetti implementation different pieces (Note that this section mostly exists for the sake of including all necessary code feel free to skip to Step 2 to jump to the emitter layer setup) (Update: this post is now available as an Xcode Playground!) Up with very nice confetti if you did I would still not recommend it though!). To best match iMessage’s confetti effect, we’ll want to account for not only Of confetti will have different shapes, colors, and more. IMessage uses blurred images for background confetti to help give the impression Shape and color, but also if the confetti is in the foreground or background. Shape, color, and position let’s start by representing these in code. speed = 0.Interactive Tutorial Content Rain, fire, even a flock of birds can be easily controlled using particle software features without animating each element. Particles can do more than just add sparkle to an effect. You can use them to blow things up make fire, smoke, rain and snow and generally make a controlled mess of things. But you can also use particles as controllers for individual elements in crowd scenes. In this tutorial, we’ll show you how to use After Effects to corral a crowd, or rather a flock, of birds that fly across your scene without the hassle of animating each one. There are a few concepts you’ll need to become familiar with if you have not used particles software or After Effects particles before. With particles, you control the forces that govern their generation and motion, rather than the precise positions of the particles themselves. This will be a big change if you are used to controlling every last detail of your scene with keyframes. But the power of particles is precisely that you don’t have to control each one. The properties you can control generally include generator type, particle size, velocity, weight or mass and other real-world forces such as wind and gravity. These properties may be termed differently by various programs and plug-ins, but they all attempt to mimic how real-world particles behave. If this vocabulary sounds familiar, don’t worry, this won’t turn into your college physics class. Let’s start by creating a new 10-second composition using the NTSC DV preset that we’ll call Flock of Birds. Import a still image you’d like to use for your background. We’ll use a photograph taken from a ridge that has plenty of open sky for our flock of birds, and we’ll drag it into our timeline panel.Ĭreate a new solid layer and name it Bird Particles. It should now be the top layer in your timeline panel. Click on this layer and go to Effect>Simulation>Particle Playground. The effects panel should now be open, displaying the ten main Particle Playground parameters.
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