Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State var start: Date = .now

    var body: some View {
        TimelineView(.animation) { context in
            let progress = context.date.timeIntervalSince(start) / 10
            ZStack {
                Sphere(color: .red).frame(width: 30)

Koshimizu-Takehito

import SwiftUI

// https://x.com/TAAT626/status/1895841081365053901
// https://gist.github.com/TAATHub/8f9e7d987c82ef0eea62d2e420d51144
struct CountdownView: View {
    @State private var counter = Counter()

    var body: some View {
        let radius = 120.0
        ZStack {

Koshimizu-Takehito

import SwiftUI

// MARK: - ContentView

struct ContentView: View {
    private var items: [Int] = (1...5).map(\.self)
    @State private var numberOfDisplays = 5
    @State private var showsIndicator = false
    @State private var viewId = UUID()

Koshimizu-Takehito

import SwiftUI

struct HPicker<SelectionValue, Content>: View where SelectionValue: Hashable, Content: View {
    private var items: [SelectionValue]
    private var numberOfDisplays: Int
    private var content: (SelectionValue) -> Content
    @Binding private var selection: SelectionValue?
    @State private var contentOffset: Double = 0
    @State private var itemWidth: Double = 100.0

Koshimizu-Takehito

#include <metal_stdlib>
using namespace metal;

float smoothMin(float x1, float x2, float k) {
    float h = clamp(0.5 - 0.5 * (x2 - x1) / k, 0.0, 1.0);
    return mix(x1, x2, h) - k * h * (1.0 - h);
}

float circleSDF(float2 point, float2 center, float radius) {
    return length(point - center) - radius;

Koshimizu-Takehito

#include <metal_stdlib>
using namespace metal;

float smoothMin(float x1, float x2, float k) {
    float h = clamp(0.5 - 0.5 * (x2 - x1) / k, 0.0, 1.0);
    return mix(x1, x2, h) - k * h * (1.0 - h);
}

float circleSDF(float2 point, float2 center, float radius) {
    return length(point - center) - radius;

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    var body: some View {
        WavingText()
            .foregroundStyle(.white)
            .frame(maxWidth: .infinity, maxHeight: .infinity)
            .background(Color(hue: 220/360, saturation: 0.3, brightness: 0.9))
    }
}

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    private var title: String {
        Item.sample.title
    }

    private var message: String {
        Item.sample.message
    }

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State var isExpanded = [true] + Array(repeating: false, count: PageItem.samples.count)

    var body: some View {
        ZStack {
            ForEach(1..<isExpanded.count, id: \.self) { offset in
                let item = PageItem.samples[(offset-1) % PageItem.samples.count]
                PageView(

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State var isExpanded = [true] + Array(repeating: false, count: 10)

    var body: some View {
        ZStack {
            ForEach(1..<isExpanded.count, id: \.self) { offset in
                CircleView(
                    color: .color(offset: offset),