Koshimizu-Takehito

import SwiftUI
import MapKit

struct ContentView: View {
    @State var position = MapCameraPosition.region(
        MKCoordinateRegion(
            center: CLLocationCoordinate2DMake(35.685175, 139.7528),
            span: MKCoordinateSpan(latitudeDelta: 0.03, longitudeDelta: 0.03)
        )
    )

Koshimizu-Takehito

import SwiftUI
import MapKit

struct MonotoneMap: View {
    @State var position = MapCameraPosition.region(
        MKCoordinateRegion(
            center: CLLocationCoordinate2DMake(35.685175, 139.7528),
            span: MKCoordinateSpan(latitudeDelta: 0.03, longitudeDelta: 0.03)
        )
    )

Koshimizu-Takehito

import SwiftUI

struct ShaderView: View {
    let name: String
    private let start = Date()

    var body: some View {
        let shader = ShaderFunction(library: .default, name: name)
        TimelineView(.animation) { context in
            let seconds = context.date.timeIntervalSince(start)

Koshimizu-Takehito

import SwiftUI

struct Item: Identifiable, Hashable {
    var id = UUID()
}

struct ContentView: View {
    @State var items = [Item()]

    var body: some View {

Koshimizu-Takehito

import SwiftUI

// MARK: - Model
@MainActor
@Observable
final class Model {
    var angles: [[Angle]]

    init(row: Int, column: Int) {
        angles = (0..<row).map { _ in

Koshimizu-Takehito

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

constant int MAX_RADIUS = 100;
constant int MAX_KERNEL_SIZE = 2 * MAX_RADIUS + 1;

float gaussian(float x, float sigma) {
    return exp(-0.5 * x * x / (sigma * sigma)) / (sigma * sqrt(2.0 * M_PI_F));
}

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)