jacobsapps

func playAHAP(_ name: String) {
    guard
        let engine = try? CHHapticEngine(),
        let url = Bundle.main.url(forResource: name, withExtension: "ahap")
    else { return }

    try? engine.start()
    let player = try? engine.makePlayer(with: CHHapticPattern(contentsOf: url))
    try? player.start(atTime: CHHapticTimeImmediate)
}

jacobsapps

let event = CHHapticEvent(
    eventType: .hapticContinuous,
    parameters: [
        CHHapticEventParameter(parameterID: .hapticIntensity, value: 1.0),
        CHHapticEventParameter(parameterID: .hapticSharpness, value: 1.0),
    ],
    relativeTime: 0,
    duration: 60
)

jacobsapps

#include <metal_stdlib>
using namespace metal;

[[ stitchable ]] half4 grain(float2 position, half4 color, float amount, float time) {
    float noise = fract(sin(dot(floor(position), float2(12.9898, 78.233)) + time) * 43758.5453);
    return half4(color.rgb + half3((noise - 0.5) * amount), color.a);
}

jacobsapps

override func layoutSubviews() {
    super.layoutSubviews()

    let filter = (NSClassFromString("CAFilter") as! NSObject.Type)
        .perform(NSSelectorFromString("filterWithType:"), with: "variableBlur")!
        .takeUnretainedValue() as! NSObject

    filter.setValue(20, forKey: "inputRadius")
    filter.setValue(makeMaskImage(), forKey: "inputMaskImage")
    filter.setValue(true, forKey: "inputNormalizeEdges")

jacobsapps

private final class VariableBlurUIView: UIVisualEffectView {
    override func layoutSubviews() {
        super.layoutSubviews()

        let filter = (NSClassFromString("CAFilter") as! NSObject.Type)
            .perform(NSSelectorFromString("filterWithType:"), with: "variableBlur")!
            .takeUnretainedValue() as! NSObject

        filter.setValue(20, forKey: "inputRadius")
        filter.setValue(makeMaskImage(), forKey: "inputMaskImage")

jacobsapps

struct ProgressiveBlurView: UIViewRepresentable {
    func makeUIView(context: Context) -> UIVisualEffectView {
        VariableBlurUIView(effect: UIBlurEffect(style: .light))
    }

    func updateUIView(_ view: UIVisualEffectView, context: Context) {}
}

jacobsapps

func makeUIView(context: Context) -> UIVisualEffectView {
    let view = UIVisualEffectView(effect: UIBlurEffect(style: .light))
    let filter = (NSClassFromString("CAFilter") as! NSObject.Type)
        .perform(NSSelectorFromString("filterWithType:"), with: "variableBlur")!
        .takeUnretainedValue() as! NSObject

    filter.setValue(20, forKey: "inputRadius")
    view.subviews.first?.layer.filters = [filter]
    return view
}

jacobsapps

struct ProgressiveBlurView: UIViewRepresentable {
    func makeUIView(context: Context) -> UIVisualEffectView {
        UIVisualEffectView(effect: UIBlurEffect(style: .light))
    }

    func updateUIView(_ view: UIVisualEffectView, context: Context) {
        view.effect = UIBlurEffect(style: .light)
    }
}

jacobsapps

struct ProgressiveBlurView: UIViewRepresentable {
    func makeUIView(context: Context) -> UIVisualEffectView {
        UIVisualEffectView(effect: UIBlurEffect(style: .systemThinMaterialLight))
    }

    func updateUIView(_ view: UIVisualEffectView, context: Context) {
        view.effect = UIBlurEffect(style: .systemThinMaterialLight)
    }
}

jacobsapps

var body: some View {
    ScrollView {
        // ...
    }
    .overlay(alignment: .top) {
        Text("Design Kisses")
            .font(.system(.headline, design: .rounded))
            .frame(maxWidth: .infinity)
            .padding(.vertical, 12)
            .background {