aguilarpgc
/ fadeScrolling.swift
Created
August 22, 2018 13:50
Simple fade animation at horizontal scrolling in UIScrollView
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| func scrollViewDidScroll(_ scrollView: UIScrollView) { | |
| let mod = scrollView.contentOffset.x.truncatingRemainder(dividingBy: scrollView.bounds.size.width) | |
| let difference = abs((2 * mod / (scrollView.bounds.size.width)) - 1) | |
| let factor = (difference * 0.5) + 0.5 | |
| self.scrollView.alpha = factor |