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@Akhu

Akhu/InvertMask+Layer.swift

Created May 12, 2017 12:53
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Simple way to invert a mask on a layer with swift / quartzcore / ios
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InvertMask+Layer.swift
func mask(withRect rect: CGRect, inverse: Bool = false) {
let path = UIBezierPath(rect: rect)
let maskLayer = CAShapeLayer()
if inverse {
path.appendPath(UIBezierPath(rect: self.bounds))
maskLayer.fillRule = kCAFillRuleEvenOdd
}
maskLayer.path = path.CGPath
self.layer.mask = maskLayer
}
@Chibija
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Chibija commented Sep 29, 2023

This shows only ON and OFF, i.e. fully opaque or complete passthrough.

How would you modify this for gradient/gradation? Make the mask alpha only partially obfuscate the underlying image.

I believe you just need to apply the gradient/opaque to the UIView you are masking.

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