369 lines
12 KiB
HTML
369 lines
12 KiB
HTML
<!doctype html>
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<html lang="ko">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
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<title>Tree of Life</title>
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<style>
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:root{
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--sky-top: #bfe3f0;
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--sky-bottom: #eaf6ee;
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--text: #1c2b22;
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--muted: #4c6155;
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}
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@media (prefers-color-scheme: dark){
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:root{
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--sky-top: #16222a;
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--sky-bottom: #0c1712;
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--text: #eaf3ec;
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--muted: #9db3a6;
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}
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}
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:root[data-theme="dark"]{
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--sky-top: #16222a; --sky-bottom: #0c1712;
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--text: #eaf3ec; --muted: #9db3a6;
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}
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:root[data-theme="light"]{
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--sky-top: #bfe3f0; --sky-bottom: #eaf6ee;
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--text: #1c2b22; --muted: #4c6155;
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}
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*{ box-sizing:border-box; }
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html,body{
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height:100%; margin:0; overscroll-behavior:none;
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}
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body{
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display:flex; flex-direction:column; align-items:center; justify-content:center;
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gap:0.9rem;
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padding: 1.4rem 1rem;
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background: linear-gradient(180deg, var(--sky-top), var(--sky-bottom));
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color: var(--text);
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font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Pretendard, Roboto, sans-serif;
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text-align:center;
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overflow:hidden;
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}
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h1{
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margin:0;
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font-size: clamp(1.5rem, 5vw, 2.2rem);
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letter-spacing: 0.01em;
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font-weight: 700;
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}
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.stage{
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position:relative;
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width:min(94vw, 520px);
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aspect-ratio: 3/4;
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max-height: 62vh;
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border-radius: 20px;
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overflow:hidden;
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touch-action: none;
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cursor: grab;
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}
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.stage.grabbing{ cursor: grabbing; }
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.stage canvas{ display:block; width:100%; height:100%; }
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p.hint{
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margin:0;
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color: var(--muted);
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font-size: 0.92rem;
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}
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noscript{ color: var(--muted); }
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</style>
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</head>
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<body>
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<h1>Tree of Life</h1>
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<div class="stage" id="stage"></div>
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<p class="hint">나무를 드래그해서 흔들어 보세요 🍎</p>
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<script src="./vendor/three.min.js"></script>
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<script>
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const stage = document.getElementById('stage');
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// ---------- renderer / scene / camera ----------
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const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: false, powerPreference: 'low-power' });
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renderer.setPixelRatio(Math.min(window.devicePixelRatio || 1, 2));
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stage.appendChild(renderer.domElement);
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const scene = new THREE.Scene();
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const skyColor = new THREE.Color(0xbfe3f0);
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scene.background = skyColor;
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scene.fog = new THREE.Fog(skyColor.getHex(), 9, 16);
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const camera = new THREE.PerspectiveCamera(42, 1, 0.1, 50);
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camera.position.set(0, 3.1, 7.2);
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camera.lookAt(0, 2.0, 0);
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function syncSky(){
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const dark = matchMedia('(prefers-color-scheme: dark)').matches;
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const root = document.documentElement.getAttribute('data-theme');
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const isDark = root ? root === 'dark' : dark;
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const hex = isDark ? 0x16222a : 0xbfe3f0;
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skyColor.setHex(hex);
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scene.background = skyColor;
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scene.fog.color.setHex(hex);
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}
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syncSky();
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matchMedia('(prefers-color-scheme: dark)').addEventListener?.('change', syncSky);
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new MutationObserver(syncSky).observe(document.documentElement, { attributes:true, attributeFilter:['data-theme'] });
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// ---------- lights ----------
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scene.add(new THREE.AmbientLight(0xffffff, 0.65));
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const sun = new THREE.DirectionalLight(0xfff2d8, 0.9);
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sun.position.set(4, 6, 3);
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scene.add(sun);
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// ---------- ground ----------
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const groundMat = new THREE.MeshStandardMaterial({ color: 0x5f9e63, roughness: 1 });
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const ground = new THREE.Mesh(new THREE.CircleGeometry(6, 32), groundMat);
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ground.rotation.x = -Math.PI / 2;
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scene.add(ground);
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// soft blob-shadow texture (radial gradient on a canvas)
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function makeShadowTexture(){
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const c = document.createElement('canvas');
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c.width = c.height = 128;
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const ctx = c.getContext('2d');
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const g = ctx.createRadialGradient(64,64,4,64,64,64);
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g.addColorStop(0, 'rgba(0,0,0,0.35)');
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g.addColorStop(1, 'rgba(0,0,0,0)');
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ctx.fillStyle = g;
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ctx.fillRect(0,0,128,128);
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return new THREE.CanvasTexture(c);
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}
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const shadowTex = makeShadowTexture();
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function makeShadowBlob(size){
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const m = new THREE.Mesh(
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new THREE.PlaneGeometry(size, size),
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new THREE.MeshBasicMaterial({ map: shadowTex, transparent:true, depthWrite:false })
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);
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m.rotation.x = -Math.PI/2;
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m.position.y = 0.01;
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return m;
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}
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const treeShadow = makeShadowBlob(3.6);
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scene.add(treeShadow);
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// ---------- tree ----------
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const treeGroup = new THREE.Group();
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scene.add(treeGroup);
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const trunkGeo = new THREE.CylinderGeometry(0.26, 0.4, 2.2, 8);
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trunkGeo.translate(0, 1.1, 0);
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const trunkMat = new THREE.MeshStandardMaterial({ color: 0x6b4a35, roughness: 1, flatShading:true });
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const trunk = new THREE.Mesh(trunkGeo, trunkMat);
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treeGroup.add(trunk);
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const foliageSpecs = [
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{ pos:[0, 3.3, 0], r:1.15, c:0x4f9d6e },
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{ pos:[0.95, 2.7, 0.5], r:0.95, c:0x3f8a5d },
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{ pos:[-0.95, 2.7, -0.4], r:0.95, c:0x5aab77 },
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{ pos:[0.55, 2.25,-0.95], r:0.85, c:0x3f8a5d },
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{ pos:[-0.6, 2.15, 0.85], r:0.85, c:0x4f9d6e },
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{ pos:[0, 2.6, 0], r:1.0, c:0x5aab77 },
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];
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const treeHitMeshes = [trunk];
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for (const spec of foliageSpecs){
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const geo = new THREE.IcosahedronGeometry(spec.r, 0);
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const mat = new THREE.MeshStandardMaterial({ color: spec.c, roughness: 0.9, flatShading:true });
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const blob = new THREE.Mesh(geo, mat);
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blob.position.set(...spec.pos);
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treeGroup.add(blob);
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treeHitMeshes.push(blob);
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}
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// ---------- apples ----------
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const appleHomes = [
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new THREE.Vector3(1.55, 2.75, 0.65),
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new THREE.Vector3(-1.5, 2.65, -0.55),
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new THREE.Vector3(0.25, 3.75, 0.85),
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new THREE.Vector3(0.95, 1.95, -1.25),
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new THREE.Vector3(-0.85, 1.9, 1.15),
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];
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const appleGeo = new THREE.SphereGeometry(0.16, 10, 8);
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const appleMat = new THREE.MeshStandardMaterial({ color: 0xd1453b, roughness: 0.5, flatShading:true });
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const stemGeo = new THREE.CylinderGeometry(0.015, 0.02, 0.14, 5);
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const stemMat = new THREE.MeshStandardMaterial({ color: 0x5a3d24, roughness:1 });
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const GROUND_Y = 0.16;
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const GRAVITY = -9.2;
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const RESPAWN_AFTER = 2.6; // seconds resting on the ground before it grows back
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const apples = appleHomes.map((home) => {
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const mesh = new THREE.Mesh(appleGeo, appleMat);
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const stem = new THREE.Mesh(stemGeo, stemMat);
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stem.position.y = 0.16;
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mesh.add(stem);
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mesh.position.copy(home);
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treeGroup.add(mesh);
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const shadow = makeShadowBlob(0.5);
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shadow.visible = false;
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scene.add(shadow);
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return {
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mesh, home, shadow,
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state: 'attached', // attached | falling | resting | popping
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velocity: new THREE.Vector3(),
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timer: 0,
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};
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});
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// ---------- drag-to-shake interaction ----------
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const raycaster = new THREE.Raycaster();
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const pointerNdc = new THREE.Vector2();
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let dragging = false;
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let lastX = 0, lastY = 0;
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const angle = { x: 0, z: 0 };
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const angVel = { x: 0, z: 0 };
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const SPRING_K = 42, SPRING_C = 7;
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let shakeEnergy = 0;
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let lastDetachAt = -10;
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function toNdc(clientX, clientY){
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const rect = renderer.domElement.getBoundingClientRect();
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pointerNdc.x = ((clientX - rect.left) / rect.width) * 2 - 1;
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pointerNdc.y = -((clientY - rect.top) / rect.height) * 2 + 1;
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}
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function hitsTree(clientX, clientY){
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toNdc(clientX, clientY);
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raycaster.setFromCamera(pointerNdc, camera);
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return raycaster.intersectObjects(treeHitMeshes, false).length > 0;
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}
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renderer.domElement.addEventListener('pointerdown', (e) => {
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if (!hitsTree(e.clientX, e.clientY)) return;
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dragging = true;
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lastX = e.clientX; lastY = e.clientY;
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stage.classList.add('grabbing');
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renderer.domElement.setPointerCapture(e.pointerId);
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});
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renderer.domElement.addEventListener('pointermove', (e) => {
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if (!dragging) return;
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const dx = (e.clientX - lastX) / renderer.domElement.clientWidth;
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const dy = (e.clientY - lastY) / renderer.domElement.clientHeight;
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lastX = e.clientX; lastY = e.clientY;
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const sensitivity = 26;
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angVel.z += dx * sensitivity;
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angVel.x += -dy * sensitivity * 0.6;
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});
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function releaseDrag(e){
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if (!dragging) return;
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dragging = false;
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stage.classList.remove('grabbing');
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try { renderer.domElement.releasePointerCapture(e.pointerId); } catch {}
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}
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renderer.domElement.addEventListener('pointerup', releaseDrag);
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renderer.domElement.addEventListener('pointercancel', releaseDrag);
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renderer.domElement.addEventListener('pointerleave', releaseDrag);
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function detachApple(apple){
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const world = new THREE.Vector3();
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apple.mesh.getWorldPosition(world);
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const q = new THREE.Quaternion();
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apple.mesh.getWorldQuaternion(q);
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scene.add(apple.mesh);
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apple.mesh.position.copy(world);
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apple.mesh.quaternion.copy(q);
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apple.mesh.scale.set(1,1,1);
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apple.velocity.set(
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(Math.random() - 0.5) * 1.4 + angVel.z * 0.05,
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1.0 + Math.random() * 0.6,
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(Math.random() - 0.5) * 1.4
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);
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apple.state = 'falling';
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apple.shadow.visible = true;
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}
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function respawnApple(apple){
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treeGroup.add(apple.mesh);
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apple.mesh.position.copy(apple.home);
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apple.mesh.quaternion.identity();
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apple.mesh.scale.set(0.001,0.001,0.001);
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apple.state = 'popping';
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apple.timer = 0;
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apple.shadow.visible = false;
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}
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// ---------- animation loop ----------
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const clock = new THREE.Clock();
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function resize(){
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const w = stage.clientWidth, h = stage.clientHeight;
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renderer.setSize(w, h, false);
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camera.aspect = w / h;
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camera.updateProjectionMatrix();
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}
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new ResizeObserver(resize).observe(stage);
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resize();
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function tick(){
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const dt = Math.min(clock.getDelta(), 1/30);
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// spring-damped shake
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const accelZ = -SPRING_K * angle.z - SPRING_C * angVel.z;
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const accelX = -SPRING_K * angle.x - SPRING_C * angVel.x;
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angVel.z += accelZ * dt;
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angVel.x += accelX * dt;
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angle.z = THREE.MathUtils.clamp(angle.z + angVel.z * dt, -0.55, 0.55);
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angle.x = THREE.MathUtils.clamp(angle.x + angVel.x * dt, -0.4, 0.4);
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treeGroup.rotation.z = angle.z;
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treeGroup.rotation.x = angle.x;
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treeGroup.updateMatrixWorld();
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const rawEnergy = Math.abs(angVel.z) + Math.abs(angVel.x);
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shakeEnergy += (rawEnergy - shakeEnergy) * 0.15;
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const now = clock.elapsedTime;
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if (shakeEnergy > 1.1 && now - lastDetachAt > 0.18){
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const attached = apples.filter(a => a.state === 'attached');
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if (attached.length){
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const chance = 1 - Math.exp(-shakeEnergy * dt * 0.9);
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if (Math.random() < chance){
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detachApple(attached[Math.floor(Math.random() * attached.length)]);
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lastDetachAt = now;
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}
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}
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}
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for (const apple of apples){
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if (apple.state === 'falling'){
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apple.velocity.y += GRAVITY * dt;
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apple.mesh.position.addScaledVector(apple.velocity, dt);
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apple.mesh.rotation.x += apple.velocity.z * dt;
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apple.mesh.rotation.z -= apple.velocity.x * dt;
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if (apple.mesh.position.y <= GROUND_Y){
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apple.mesh.position.y = GROUND_Y;
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if (Math.abs(apple.velocity.y) > 0.6){
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apple.velocity.y *= -0.35;
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apple.velocity.x *= 0.55;
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apple.velocity.z *= 0.55;
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} else {
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apple.velocity.set(0,0,0);
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apple.state = 'resting';
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apple.timer = 0;
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}
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}
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apple.shadow.position.set(apple.mesh.position.x, 0.01, apple.mesh.position.z);
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const h = Math.max(apple.mesh.position.y - GROUND_Y, 0);
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apple.shadow.material.opacity = THREE.MathUtils.clamp(1 - h * 0.7, 0.15, 1);
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} else if (apple.state === 'resting'){
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apple.timer += dt;
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if (apple.timer > RESPAWN_AFTER) respawnApple(apple);
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} else if (apple.state === 'popping'){
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apple.timer += dt;
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const t = Math.min(apple.timer / 0.45, 1);
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const s = t < 1 ? THREE.MathUtils.lerp(0.001, 1, 1 - Math.pow(1 - t, 3)) : 1;
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apple.mesh.scale.setScalar(s);
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if (t >= 1) apple.state = 'attached';
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}
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}
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renderer.render(scene, camera);
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requestAnimationFrame(tick);
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}
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requestAnimationFrame(tick);
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</script>
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</body>
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</html>
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