Koshimizu-Takehito

#include <metal_stdlib>
#include <SwiftUI/SwiftUI.h>
using namespace metal;

[[ stitchable ]] half4 mosaic(
    float2 position,
    SwiftUI::Layer layer,
    float scale
) {
    position = floor(position / scale) * scale;

Koshimizu-Takehito

#include <metal_stdlib>
using namespace metal;

[[ stitchable ]] half4 tile(float2 position, half4 color, float4 box, float scale) {
    position = position - box.zw/2;
    position = position / (10 * scale);
    int2 xy = int2(floor(position)) % 2;
    if ((xy.x + xy.y) % 2) {
        return half4(0.0, 0.0, 0.0, 1.0);
    } else {

Koshimizu-Takehito

#include <metal_stdlib>
using namespace metal;

[[ stitchable ]] half4 spiral(
    float2 position,
    half4 color,
    float4 box,
    float scale
) {
    position = position - box.zw/2;

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    private static let primeNumbers = sieveOfEratosthenes(upTo: 1000000)
    @State private var scale = 1.0
    @State private var start = Date()

    var body: some View {
        TimelineView(.animation) { context in
            let time = context.date.timeIntervalSince(start)

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State var start = Date()

    var body: some View {
        TimelineView(.animation) { context in
            let time = context.date.timeIntervalSince(start) / 120
            let rotation = 0.8 + 0.2 * abs((cos(.pi * time) + 1.0) / 2.0)
            Canvas { context, size in

Koshimizu-Takehito

import SwiftUI
import Observation

@Observable
@MainActor
final class ContentViewModel {
    var isLoading = false
    var colors: [Color] = Array(repeating: Color.random(), count: 10)

    func fetch() {

Koshimizu-Takehito

import SwiftUI

// MARK: - ContentView

// https://x.com/okazz_/status/1870807939944243631
struct ContentView: View {
    @State private var progress: Double = 0

    var body: some View {
        MyGroup {

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State var isInfinityWidth = false
    @State var isFixedSize = false

    var body: some View {
        Form {
            Section {
                Toggle("maxWidth: .infinity", isOn: $isInfinityWidth.animation())

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State private var digits: [Int] = []

    var body: some View {
        AuthCodeInput(digits: $digits, count: 6)
            .padding()
            .ignoresSafeArea(.keyboard)
            .onChange(of: digits) { _, digits in

Koshimizu-Takehito

import SwiftUI

// MARK: - Model
@MainActor
@Observable
final class Model {
    var rotations: [[Int]]
    var positions: [IndexPath]

    init(row: Int, column: Int) {