Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State private var containerFrame: CGRect = .zero
    private var colors = [[Color]](repeating: .rainbow(count: 50), count: 300)
        .flatMap { $0 }
        .enumerated()
        .map { $0 }

    var body: some View {

Koshimizu-Takehito

import SwiftUI

extension [Color] {
    static func rainbow(hue: Double = 0, count: Int) -> Self {
        (0..<count).map { i in
            var value = hue + Double(i) / Double(count)
            value -= floor(value)
            return Color(hue: value, saturation: 1/4, brightness: 1)
        }
    }

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State var mode = EditMode.inactive

    var body: some View {
        NavigationStack {
            VStack {
                ForEach(1..<12) { offset in
                    FooView(count: 12, offset: offset)

Koshimizu-Takehito

#include <metal_stdlib>
using namespace metal;

namespace JuliaSet {
    /// HSV -> RGB
    half3 hsv2rgb(half3 c) {
        half3 rgb = clamp(abs(fmod(c.x * 6.0 + half3(0.0, 4.0, 2.0), 6.0) - 3.0) - 1.0, 0.0, 1.0);
        return c.z * mix(half3(1.0), rgb, c.y);
    }

Koshimizu-Takehito

import SwiftUI

struct SqureFlowView: View {
    @StateObject private var holder = SquresHolder()

    var body: some View {
        TimelineView(.animation) { timeline in
            Canvas { context, size in
                holder.update(at: timeline.date, in: size)
                for item in holder.squre {

Koshimizu-Takehito

#include <metal_stdlib>
using namespace metal;

namespace SmoothMin2d {
    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) {

Koshimizu-Takehito

import SwiftUI

struct LoadingView: View {
    @State var theta: Double = 0
    let radius: Double = 60

    var body: some View {
        ZStack {
            ForEach(0..<8) { index in
                let offset = ((2 * .pi) * Double(index)) / 8

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    @State var theta: Double = 0
    let radius: Double = 60
    let colors: [Color] = [.purple, .red, .yellow, .blue, .green]

    var body: some View {
        ZStack {
            ForEach(Array(colors.enumerated()), id: \.offset) { offset, style in

Koshimizu-Takehito

import SwiftUI

let symbols = [
    "pencil",
    "trash",
    "folder",
    "camera",
    "photo",
    "clock",
    "arrow.right.circle.fill",

Koshimizu-Takehito

import SwiftUI

struct AnimationGridView: View {
    @State
    private var id: UUID = .init()

    var body: some View {
        ZStack {
            Color(.systemBackground)
            VStack {