A small Swift struct for computing a rolling average of 2D or 3D velocities (usually driven by a touch).
VelocitySampler can be added to your project using Swift Package Manager. For more information on using SwiftPM in Xcode, see Apple's guide
If you're using package dependencies directly, you can add this as one of your dependencies:
dependencies: [
.package(url: "https://github.com/harlanhaskins/VelocitySampler.git", from: "0.0.1")
]VelocitySampler is a struct that you progressively add more and more samples to. It maintains
an internal ring buffer of N samples that it keeps track of and continually averages.
var sampler = VelocitySampler()
// While the user's moving a touch around, update the sampler
sampler.addSample(touch.location(in: view))
// ... repeat many times
// Extract the velocity
let velocity = sampler.velocity
print(velocity) // Do something with itHarlan Haskins (harlan@harlanhaskins.com)