Building UI can be frustating when it come to tweaking timing, size or others dimensions of your UI component.
Let's explore how to build a set of tool that will greatly ease this process in Xcode using Playground
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Timing an animation can be done using CAMediaTimingFunction
which can take a prebuild function (Linear, EaseIn, EaseOut, ...) but also modeled after a cubic Bézier curve. It can be tedious to find the right curve shape. Let's build a (almost) drag and drop Playground to tweak any animation using a Bézier curve visual builder.
Preview: http://bit.ly/29gCNnV