Koshimizu-Takehito

import AVFoundation
import CoreImage
import SwiftUI

/// A sample view that plays a remote video and applies a controllable mosaic shader.
///
/// This view demonstrates how to:
/// - Pull video frames from `AVPlayer` using `AVPlayerItemVideoOutput`
/// - Render them in SwiftUI as a `CGImage`
/// - Apply a custom Metal-based mosaic effect using `ShaderLibrary`

Koshimizu-Takehito

WWDC                                2006  2007  2008  2009
2010 2011 2012 2013 2014 

Koshimizu-Takehito

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

// 画面の曲面歪みを適用する関数
// この関数は、CRTモニターの曲面ガラスによる画像の歪みをシミュレートします。
// UV座標（0.0〜1.0の正規化座標）を入力とし、中央からの距離に基づいて
// バレル歪み（barrel distortion）を適用します。これにより、画面の端が
// 外側に膨張するような効果が生まれ、レトロなCRTの視覚を再現します。
// - Parameters:

Koshimizu-Takehito

#include <metal_stdlib>
using namespace metal;

// ============================================================================
// Compute: 1 step of Game of Life
// ============================================================================

/**
 * @brief   Perform a single step update of Conway's Game of Life.
 *

Koshimizu-Takehito

import SwiftUI

struct FibonacciLayout: Layout {
    struct Cache {
        var fib: [Int128]
    }

    func makeCache(subviews: Subviews) -> Cache {
        switch subviews.count {
        case ...2:

Koshimizu-Takehito

import SwiftUI

// MARK: - Demo Screen

/// A demo screen showcasing a custom color-based segmented control component.
/// Displays a list of segments and shows the selected segment's value in a large, bold title.
struct ColorSegmentedControlDemoScreen: View {
    /// The static list of selectable segments.
    private static let demoItems: [ColorItem] = [
        ColorItem(value: "Apple", color: .red),

Koshimizu-Takehito

import Observation

/// An observable view‑model that drives a numeric badge.
///
/// `BadgeModel` keeps track of the current count (`number`) and the
/// badge’s visual appearance (`style`).  It also exposes two derived
/// properties that make it easy to bind the model to SwiftUI controls:
///
/// * `slider` – Bridges the `Int`‐based `number` to floating‑point
///   controls such as `Slider`.

Koshimizu-Takehito

import SwiftUI

// MARK: - Demo Screen

/// A sample screen demonstrating three stacked stroke effects produced by
/// `StrokeModifier`.
/// Each call to `.stroke(_:width:)` adds an additional blurred outline,
/// resulting in a multi-layered border.
struct StrokeModifierDemoScreen: View {
    var body: some View {

Koshimizu-Takehito

import SwiftUI

// MARK: - Demo Screen

/// Demonstrates `OrbitingDotsLoadingView` and lets you preview it at any
/// built-in `ControlSize`.
///
/// The loader is centered, while the bottom `ControlSizePicker` writes
/// to `controlSize`, automatically propagating the value down the view
/// hierarchy through `.controlSize(_:)`.

Koshimizu-Takehito

import SwiftUI

struct ContentView: View {
    var body: some View {
        TextShape(sample)
            .fill(.orange)
            .stroke(.blue, lineWidth: 2)
    }

    var sample: AttributedString {