endanke / UIBlob

CoreGraphics Blob Effect in Swift

UIBlob

A Swift implementation of the blob effect made by Liam Egan. Original source: https://codepen.io/shubniggurath/pen/EmMzpp

Installation

Cocoapods

pod 'UIBlob'

Manually

Just copy UIBlob.swift in your project

How to Use

• Create an UIBlob instance programatically or through the interface builder.
• shake() - Animate the blob. (Can be stacked to increase entropy.)
• stopShake() - Stop and reset animation.

Known issues

• Currently the blob doesn't fill the whole area of the view's bounds, because the graphics is generated in the draw(_ rect: CGRect) function and it needs some extra padding to offest the boundary of the circle during animation. This could be solved by using a sublayer to render the graphics outside the bounds, which will be implemented later. A temporary workaround is simply scaling up the layer with a transformation.

Roadmap:

• Blob effect
• Global animator
• Touch point based shake animation
• CALayer based animation
• Procedural shake animation
• SwiftUI support