{"id":"gen-1785787258-WQKhPNhhekhWfHnYi1D2","choices":[{"finish_reason":"stop","index":0,"logprobs":null,"message":{"content":"# 🌳 The Whispering Tree — Interactive 3D Scene\n\nA complete procedural 3D tree experience featuring:\n\n- **Procedurally grown tree** — recursive branching algorithm with trunk flare, roots, and leaf clusters\n- **Generated textures** — bark (streaks, cracks, knots), leaf clusters, grass, all painted on canvas at runtime\n- **Custom wind shaders** — vertex displacement injected into the materials: trunk bending, branch swaying, per-cluster leaf fluttering + falling leaf particles\n- **Lighting** — dynamic sun/moon with shadows, hemisphere light, ACES tone mapping, gradient sky shader with sun disc\n- **Generative sound** — wind noise, leaf rustling, birds by day, crickets by night (Web Audio API, no files)\n- **Day/night cycle + 4 seasonal color palettes**\n\n```html\n\n\n\n\n\nThe Whispering Tree\n\n\n\n\n

The Whispering Tree

procedural · wind · light · sound

Wind strength

Sun / time of day

\n Season\n

\n \n \n \n \n

\n \n

Drag to orbit · Scroll to zoom
🎧 headphones recommended

\n\n\n\n\n\n\n\n```\n\n**Try this:** slide **Wind** to max and watch the canopy shiver while leaves tear off and swirl away (the rustling sound swells too) — then drag the **Sun** slider to night: the sky fades, stars appear, moonlight takes over, and crickets replace the birds. Switch to **Autumn** for a golden crown, or **Blossom** for pink petals drifting in the breeze.","refusal":null,"role":"assistant","annotations":null,"audio":null,"function_call":null,"tool_calls":null,"reasoning":"The user wants a 3D tree with:\n- Generated textures\n- Colors\n- Sounds\n- Winds\n- Shader with light\n- Clean tree with branches and leaves\n\nI'll create a complete HTML file using Three.js that includes:\n1. A procedurally generated 3D tree (trunk, branches, leaves)\n2. Procedurally generated textures (bark texture, leaf texture using canvas)\n3. Nice colors\n4. Wind animation (vertex shader displacement for leaves, branch swaying)\n5. Sound generation (wind/ambient sounds using Web Audio API)\n6. Custom shaders with lighting\n7. Clean scene setup\n\nLet me build this carefully:\n\n1. **Tree generation**: Recursive branch generation - trunk splits into branches, each branch has leaves at the ends.\n\n2. **Textures**: \n - Bark texture: generated with canvas - noise-based vertical streaks\n - Leaf texture: canvas-generated with a leaf shape/gradient\n - Ground texture maybe\n\n3. **Wind**: \n - Custom shader material for leaves with vertex displacement based on time and position\n - Branch sway via rotation animation\n\n4. **Sound**: Web Audio API - generate wind noise using filtered noise (brown/pink noise with LFO on filter frequency), maybe subtle rustling\n\n5. **Lighting shader**: Custom shader for leaves with lambert-ish lighting + subsurface scattering look, or use MeshStandardMaterial with onBeforeCompile to add wind. Actually a custom ShaderMaterial gives more control. Let me use custom ShaderMaterial with:\n - Vertex shader: wind displacement\n - Fragment shader: leaf texture + diffuse lighting + ambient + rim light\n\n6. **UI**: Buttons to toggle sound, sliders for wind strength, maybe time of day.\n\nLet me write the code:\n\n```html\n\n\n\n...\n\n\n\n...\n\n\n```\n\nKey components:\n\n**Bark texture generation:**\n```js\nfunction createBarkTexture() {\n const canvas = document.createElement('canvas');\n canvas.width = 256; canvas.height = 512;\n const ctx = canvas.getContext('2d');\n // base color\n ctx.fillStyle = '#5a4230';\n ctx.fillRect(0,0,256,512);\n // vertical streaks with noise\n for (let i = 0; i < 3000; i++) {\n const x = Math.random()*256;\n const y = Math.random()*512;\n const h = 10 + Math.random()*40;\n const shade = Math.random();\n ctx.fillStyle = shade > 0.5 ? `rgba(70,50,35,${Math.random()*0.5})` : `rgba(95,75,55,${Math.random()*0.5})`;\n ctx.fillRect(x, y, 1+Math.random()*3, h);\n }\n // cracks\n ...\n const tex = new THREE.CanvasTexture(canvas);\n tex.wrapS = tex.wrapT = THREE.RepeatWrapping;\n return tex;\n}\n```\n\n**Leaf texture:**\n```js\nfunction createLeafTexture() {\n const canvas = document.createElement('canvas');\n canvas.width = canvas.height = 128;\n const ctx = canvas.getContext('2d');\n // draw a leaf shape with gradient and vein\n ...\n}\n```\n\nActually for leaves, I could make clusters - quads with leaf texture, or actual leaf-shaped geometry. A common approach: use PlaneGeometry with alpha-tested leaf texture, or use custom geometry. For a \"clean\" look, I'll generate leaf clusters made of several crossed planes with a leaf sprite texture (a cluster of small leaves drawn on canvas).\n\nBetter: draw a cluster of leaves on canvas — many small ellipses in green shades with veins. Alpha test in shader.\n\n**Tree generation (recursive):**\n```js\nfunction generateBranch(depth, length, radius) {\n // cylinder geometry, positioned along +Y, pivot at bottom\n // add children branches rotated\n}\n```\n\nI'll build branches as cylinders merged or as group hierarchy. For wind sway on branches, I can apply a shader-based sway too, or animate via hierarchy. Simpler and cleaner: use a custom shader for bark too with subtle sway based on height. Actually simplest robust approach: put whole tree in a group, sway trunk slightly by rotating group; leaves get shader wind. Also branch-level sway can be faked by vertex displacement in bark shader proportional to y position.\n\nLet me write a bark ShaderMaterial too with wind displacement + lighting + texture. That keeps consistency.\n\nActually, to keep it manageable and \"clean\", I'll use:\n- Bark: MeshStandardMaterial with generated texture + onBeforeCompile injecting wind sway (height-based).\n- Leaves: custom ShaderMaterial with full control: wind flutter, lighting (diffuse + ambient + specular + translucency), alpha test, fog.\n\nHmm, mixing might complicate. Alternatively use onBeforeCompile for both — that gives shadows, fog, etc. for free. But the user asked for \"shader with light\" — a custom ShaderMaterial with lighting demonstrates that better. Let me do a full custom ShaderMaterial for leaves with nice lighting, and for bark use custom ShaderMaterial as well with the generated texture, lambert + specular. I can implement fog manually or skip fog... Fog adds depth. I can include THREE fog chunks manually. Simpler: skip scene fog, use a nice gradient background sky via shader on a big sphere or just renderer clear color + CSS gradient. I'll make a sky using a large sphere with gradient shader — that also counts as \"shader with light\" (sun glow).\n\nLet me include:\n- Sky shader (gradient + sun glow)\n- Ground (generated grass texture, receiveShadow)\n- Shadows: with custom ShaderMaterial, receiving shadows is complex. I could use THREE's shadow via including shadowmap chunks — complicated. Alternative: use MeshStandardMaterial with onBeforeCompile for wind — gets shadows + lighting for free, and it IS a shader with light (standard PBR lighting). Plus I can add a custom leaf ShaderMaterial... \n\nDecision: Use MeshStandardMaterial + onBeforeCompile for bark and leaves. This gives:\n- Real PBR lighting with directional sun light + hemisphere light\n- Shadows (cast + receive)\n- Wind vertex displacement injected\n- Clean and robust\n\nPlus a custom sky gradient shader and maybe custom grass. This satisfies \"shader with light\" since the standard material has lighting and we modify its shader. I can also add a subtle custom \"glow\" or use ACES tone mapping for beauty.\n\nHmm, but to really show off a \"shader\", let me make the leaves a true ShaderMaterial with lambert lighting computed manually... Shadows would be lost. Trade-off. I think visual quality wins: MeshStandardMaterial + onBeforeCompile wind injection, with shadows. I'll write the lighting through Three's standard pipeline (which is shader lighting).\n\nActually — I can do both: leaves as ShaderMaterial WITH shadow support by including the shadowmap chunks. That's advanced but doable:\n\n```glsl\n#include \n#include \n#include \n...\n```\n\nAnd in vertex: `#include ` requires worldPosition etc. It's finicky but I've seen it work. Risk of bugs. Given \"clean tree\" requirement, I'll go with MeshStandardMaterial + onBeforeCompile. It's reliable, beautiful, has lights and shadows.\n\n**Wind system:**\n- Global `windUniforms = { uTime: {value:0}, uWindStrength: {value:1}, uWindDir... }`\n- Bark sway: displacement in vertex shader: `pos.x += sin(uTime*1.2 + pos.y*0.5) * pow(max(pos.y,0.0)/maxHeight, 2.0) * uWindStrength * 0.15;`\n- Leaf flutter: per-leaf random phase. Since leaves will be merged geometry for performance, add an attribute `aPhase` and `aFlex` (flexibility). Displacement: sway + flutter (normal-based jitter).\n- Leaf clusters as instanced or merged geometry. Merging with BufferGeometryUtils... I'm loading three from CDN r128 — BufferGeometryUtils available via examples js? For r128, there's `https://cdn.jsdelivr.net/npm/three@0.128.0/examples/js/utils/BufferGeometryUtils.js`. Or I can merge manually by creating the leaf quads transformed and merging attributes myself. Simpler: use THREE.InstancedMesh? Wind per-instance phase via instanceMatrix position hash — can derive phase from world position in shader, no extra attribute needed. InstancedMesh with onBeforeCompile works. But leaves orientation per instance set via matrix. That's clean.\n\nActually merging manually isn't hard: create plane, apply matrix, push attributes. But r128 has Geometry/BufferGeometry — merge via BufferGeometryUtils from CDN examples. Let me use the jsDelivr examples URL for r128 to be safe:\n\n`https://cdn.jsdelivr.net/npm/three@0.128.0/examples/js/utils/BufferGeometryUtils.js` — this attaches `THREE.BufferGeometryUtils`. Good.\n\nOr use OrbitControls from same: `https://cdn.jsdelivr.net/npm/three@0.128.0/examples/js/controls/OrbitControls.js`.\n\nLet me use three r128 from cdnjs (core) and examples from jsDelivr — version match 0.128.0. Good.\n\n**Leaves rendering:** clusters: each leaf = 2-3 crossed planes? For a fluffy canopy look, I'll place leaf cluster sprites (quads with cluster texture) at branch tips, random rotation, maybe 2 quads crossed per cluster. Alpha test 0.5 in material (alphaTest). DoubleSide.\n\nWind for leaves in vertex shader:\n```glsl\nvec3 wp = position; // local\nfloat phase = position.x * 2.0 + position.z * 1.7; // variance\n// Actually better per-cluster phase: use a custom attribute\n```\nI'll add attribute `aData` (x: phase, y: flex). When building merged geometry, fill per-vertex.\n\nVertex displacement:\n```glsl\nfloat sway = sin(uTime * 1.4 + phase) * 0.5 + sin(uTime * 2.3 + phase * 1.3) * 0.3;\nfloat gust = uWindStrength * (0.6 + 0.4 * sin(uTime * 0.4 + phase * 0.2));\ntransformed += windDir * sway * gust * flex * 0.35;\ntransformed += normal * sin(uTime * 5.0 + phase * 7.0) * 0.03 * uWindStrength * flex;\n```\n\nFor bark, flex based on height^2.\n\n**Sound (Web Audio):**\n- Wind: buffer of white noise -> lowpass filter with LFO on frequency + gain LFO -> stereo panners. Two layers for depth.\n- Leaves rustle: bandpass-filtered noise at higher freq, gain modulated by wind strength, only when audio on.\n- Maybe subtle birds? Random chirps with oscillators — nice touch! Random bird chirps: oscillator freq sweeps. Add toggle.\n- Audio starts on user gesture (button \"Enable Sound\"). Show a mute button.\n\nWind strength slider also affects sound volume/filter — nice integration.\n\n**UI:**\n- Title overlay\n- Controls: wind slider, sound toggle, maybe season color presets (green / autumn / cherry?) — \"colors\" requested. Add color palette buttons: Summer Green, Autumn, Cherry Blossom, Mystic Blue. Changes leaf material color tint + maybe fog/light tint. \n- Time of day slider? Could be nice: changes sun position/color, sky colors. That's impressive but adds complexity to sky shader — doable: sky shader takes uSunDir and colors computed. Let me implement day cycle slider: sun elevation -> sky gradient colors mix (day/sunset/night), light intensity/color, stars at night? Stars could be points... maybe skip stars, keep it clean-ish. I'll do sun slider affecting: sun light position/color/intensity, sky shader uniforms, hemisphere light. Nice.\n\nKeep UI minimal and pretty: glassmorphism panel top-left.\n\n**Ground:** circle geometry with generated grass texture (canvas noise greens) + subtle color variation. Receive shadow. Maybe a few flowers/rocks? Keep clean — just grass + soft radial darkening.\n\n**Petals/particles falling?** Could add falling leaves particles when wind strong — nice touch but optional. Maybe skip to keep code size manageable... Actually a few falling leaf sprites using Points with custom shader would be lovely and \"wind\" visible. Hmm, code length is already big. I'll add simple falling leaves points system — it strongly sells \"wind\". Let me include a compact version: 150 points, spawn in canopy radius, fall with sway, respawn. Color matches palette.\n\n**Sky:** big sphere, ShaderMaterial gradient: top color, bottom color, sun glow around sun dir, uniforms updated by time-of-day.\n\n**Lighting:**\n- DirectionalLight (sun) with shadows, 2048 map.\n- HemisphereLight sky/ground.\n- Tone mapping ACESFilmic, exposure ~1.1.\n- renderer.outputEncoding sRGB.\n\n**Tree generation details:**\nRecursive:\n```js\nconst treeGroup = new THREE.Group();\nconst branches = []; // {matrix stuff}\nfunction grow(position, direction, length, radius, depth) {\n const seg = new THREE.CylinderGeometry(radius*0.7, radius, length, 7, 1);\n seg.translate(0, length/2, 0);\n // orient: quaternion from up to direction\n ...\n merge into bark geometry with aFlex attribute based on depth\n if depth === 0 -> spawn leaf clusters at tip + along\n else spawn 2-3 children\n}\n```\nMerge all bark cylinders into one BufferGeometry with per-vertex `aFlex` = (worldY/maxY)^2. For bark I'll compute flex in shader from world position instead — easier: in shader use transformed world y. Since tree is static geometry merged, position.y works. Trunk bottom y=0 flex=0, top flex=1. Good, no attribute needed for bark.\n\nBut individual branch sway would be nicer with per-branch pivot... merged whole-tree sway (bend from base) looks natural for wind. Fine.\n\nLeaf clusters: at each terminal branch tip, add 1-3 cluster quads (size 1.2-2.2). Also add some along outer branches for fullness. Each cluster quad: PlaneGeometry(1,1), rotate random, translate to tip + slight offset. Record per-vertex aData: phase = random*2PI per cluster, flex = 1 (or random 0.7-1). Also store aColor variation? Could tint per-cluster hue slightly via attribute — nice for richness. I'll add attribute aTint (float) mixing two leaf colors in shader... but using MeshStandardMaterial color is uniform-wide. With onBeforeCompile I can inject attribute tint into diffuse. Doable: add `attribute float aTint; varying float vTint;` then `diffuseColor.rgb *= mix(vec3(1.0), tintColor, vTint)`. I'll inject into fragment. Let's do it: tint variations of green/yellow.\n\nLeaf texture on canvas: draw ~40 small leaf shapes (ellipses rotated) in varying greens with darker vein lines, within circle radius, transparent bg. alphaTest handles clipping. Also generate an autumn version? Changing palette can just re-tint via material color multiply; texture is grayscale-ish green? If texture is green and palette tints multiply, autumn = multiply by orange — green*orange = muddy. Better: make leaf texture mostly luminance/white-ish with alpha, and let material color drive hue. I'll draw leaves with white-to-light-gray gradients + subtle vein shading, then material.color sets hue (green/orange/pink). Tint attribute adds secondary variation. \n\nLeaf alpha texture: shape = ellipse cluster; shading light gray highlights. Good.\n\nRoughness ~0.8, and to get translucency feel, add emissive slight? Standard material: use `emissive` small same color * 0.15 to fake light-through. Or custom. Keep small emissive via onBeforeCompile? Material emissive property exists — set material.emissive = color.clone().multiplyScalar(0.12). When palette changes update both.\n\n**Shadows:** leaves castShadow with alphaTest — standard material handles alpha in shadow depth? Shadow depth material doesn't respect alphaTest unless customDepthMaterial. Leaves casting blob shadows: acceptable to let full quad cast? That'd make square shadows — ugly. Use customDepthMaterial = new THREE.MeshDistanceMaterial? For directional shadow it's MeshDepthMaterial with alphaTest and map: \n```js\nleafMesh.customDepthMaterial = new THREE.MeshDepthMaterial({depthPacking: THREE.RGBADepthPacking, map: leafTex, alphaTest: 0.5});\n```\nBut our vertex wind displacement won't apply to depth material — shadow won't sway, subtle, acceptable. Actually wind in depth: we can also onBeforeCompile the depth material same way... keep simple: accept static-ish shadow or small. Hmm wind sway amplitude ~0.3 — shadow mismatch noticeable but minor; most viewers won't mind. I could inject the same vertex code into the depth material — easy since it's same chunk replacement. Let me do it: apply wind patch function to both material and customDepthMaterial. \n\n**Birds sound:** simple chirp generator: setInterval-ish random, osc sine freq envelope 2000->3000 quick blips x3. Keep subtle, toggle with sound.\n\nNow the code structure. Also handle resize, animate loop, controls damping.\n\nPalette presets:\n- Summer: leaf #4a9b3f tint secondary #8fce5a, sky day\n- Autumn: #e07b2a / #f4c542\n- Blossom: #f2a7c3 / #ffffff\n- Mystic: #58c1c9? maybe #7de0d3 with purple-ish light\n\nFalling leaves color follows palette.\n\nTime of day slider 0..1 mapped: sunrise(0.15)->noon(0.5)->sunset(0.8)->night edges. Simplify: slider \"sun angle\" 0..1 -> elevation = sin(pi*t)*... Let me map t in [0,1] to sun angle theta from 0..PI (horizon to horizon), azimuth fixed-ish. Sun elevation sin. Colors: day when elevation high; sunset near horizon; night when below small threshold clamp. Compute colors by mixing keyframes. Keep 3 keyframes: night, sunset, day. \n\nskyColor sets: \n- day: top #3a7bd5 bottom #aad4f5, sun white-ish\n- sunset: top #2b2e5f bottom #ff9a5a\n- night: top #0a0e2a bottom #14264a\nMix by elevation. Directional light color/intensity similarly, hemisphere too. Implement with THREE.Color lerp.\n\nSun mesh? Sky shader draws sun disc glow at uSunDir. Also add a lens-ish glow. Good.\n\nStars: add Points with random positions on sphere, visible at night via opacity uniform. Compact to add — include, it's pretty. Hmm... code size. I'll include ~400 star points, material opacity tied to night factor. Small addition, big effect.\n\n**Grass texture canvas:** base green, thousands of tiny strokes/variations, some darker patches. Repeat 8x. Also slight vertical gradient via lighting anyway.\n\nAdd subtle flowers? skip.\n\n**Sound engine details:**\n```js\nclass WindAudio {\n constructor(){ ctx=null }\n start(){ create ctx; noise buffer 2s white; \n // Layer 1 wind: source->lowpass(400)->gainWind->master, LFO(0.1Hz)->filter.freq, LFO2->gain\n // Layer 2 leaves: source2->bandpass(2500,Q1)->gainLeaves->master, modulate by windStrength param\n // master gain 0.0 -> ramp to set\n }\n setWind(v){ targets for gains/filter }\n toggle()\n}\n```\nBird chirps: function chirp(){ if(!ctx||muted) return; osc + gain env; schedule next via setTimeout random 3-9s }\n\nAutoplay policy: start on button click. Button: \"🔊 Sound: Off/On\".\n\nWind slider also calls windAudio.setWind.\n\nNow writing all code carefully. Length will be large (~700+ lines) but that's fine.\n\nLet me write vertex wind injection helper:\n\n```js\nfunction addWind(material, opts){\n material.onBeforeCompile = (shader)=>{\n shader.uniforms.uTime = windUniforms.uTime;\n shader.uniforms.uWind = windUniforms.uWind;\n shader.uniforms.uGust = windUniforms.uGust;\n shader.vertexShader = `\n uniform float uTime;\n uniform float uWind;\n uniform float uGust;\n ${opts.leaves ? 'attribute vec2 aData; attribute float aTint; varying float vTint;' : ''}\n ` + shader.vertexShader;\n shader.vertexShader = shader.vertexShader.replace('#include ', `\n #include \n ${opts.leaves ? leafWindCode : barkWindCode}\n `);\n if(opts.leaves){\n shader.fragmentShader = 'varying float vTint;\\n' + shader.fragmentShader;\n shader.fragmentShader = shader.fragmentShader.replace('#include ', `\n #include \n diffuseColor.rgb = mix(diffuseColor.rgb, diffuseColor.rgb * vec3(1.25,1.15,0.55), vTint);\n `);\n // hmm tint toward yellowish\n }\n material.userData.shader = shader;\n };\n}\n```\n\nWait — tint toward yellow via multiplying by (1.25,1.15,0.55) pushes yellow. vTint in 0..~0.6 random. OK.\n\nBark wind code:\n```glsl\nfloat hNorm = clamp(transformed.y / uTreeHeight, 0.0, 1.0);\nfloat bendAmt = hNorm * hNorm;\nfloat wob = sin(uTime * 1.3 + transformed.y * 0.35) + 0.5 * sin(uTime * 2.7 + transformed.x * 0.5 + transformed.y*0.2);\nvec2 windVec = vec2(0.83, 0.55); // normalized wind dir xz\ntransformed.x += windVec.x * wob * bendAmt * uWind * uGust * 0.35;\ntransformed.z += windVec.y * wob * bendAmt * uWind * uGust * 0.35;\n```\nuTreeHeight uniform constant ~ e.g., 9.\n\nLeaf wind code:\n```glsl\nvTint = aTint;\nfloat phase = aData.x;\nfloat flex = aData.y;\nfloat t = uTime;\nfloat gust = uGust * (0.7 + 0.3 * sin(t*0.35 + phase*0.15));\nfloat sway = sin(t*1.5 + phase)*0.6 + sin(t*2.9 + phase*1.7)*0.4;\nvec2 windVec = vec2(0.83,0.55);\ntransformed.x += windVec.x * sway * gust * uWind * flex * 0.45;\ntransformed.z += windVec.y * sway * gust * uWind * flex * 0.45;\ntransformed.y += sin(t*1.1 + phase)*0.08*uWind*gust*flex;\n// flutter along normal\nfloat fl = sin(t*6.0 + phase*9.0 + transformed.x*3.0)*0.05*uWind*flex;\ntransformed += normalize(vec3(0.0,1.0,0.0)+vec3(0.0001)) * fl; // use objectNormal\n```\nBetter use objectNormal: `transformed += objectNormal * fl;` — in begin_vertex, objectNormal exists (defined in beginnormal_vertex which comes before begin_vertex in standard material? Order in meshphysical vertex shader: `#include ` ... then ``. Yes objectNormal defined before. Good.\n\nGust uniform: computed on CPU each frame: gust = 0.6+0.4*noise-ish (sin combos). Fine.\n\nNow the depth material patch: customDepthMaterial = MeshDepthMaterial({depthPacking, map, alphaTest}); apply addWind with same leaf code. MeshDepthMaterial vertex shader includes begin_vertex too. It lacks objectNormal (no beginnormal in depth material!). Depth material vertex shader: includes `` etc but not beginnormal_vertex? Let me recall depth vertex template: it has `#include ` and `#include `, plus skinning/morph. objectNormal NOT defined. So in leaf code for depth, avoid objectNormal: use flutter along fixed up vector instead. I'll parametrize: pass opts.simple to skip normal flutter, or define flutter along (0,1,0). Simpler: in leaf wind code use `vec3 nrm = vec3(0.0,1.0,0.0);`? But then main material loses normal flutter — acceptable! Use up-vector flutter for both, keep code identical for material & depth. Actually nicer: flutter radially from cluster center... we don't have center. Up-vector flutter fine.\n\nAlso aTint attribute doesn't exist on depth — guard with opts.\n\nMerging geometry: BufferGeometryUtils.mergeBufferGeometries needs same attributes. Plane geometry has position/normal/uv. I add aData + aTint to each before merge. For bark cylinders: position/normal/uv only — merge separately. Good.\n\nBuilding tree:\n\n```js\nfunction buildTree(){\n const barkGeos=[], leafGeos=[];\n const tmpObj... \n function branch(pos, dir, len, rad, depth){\n const g = new THREE.CylinderGeometry(rad*0.62, rad, len, 8, 3);\n g.translate(0, len/2, 0);\n const q = new THREE.Quaternion().setFromUnitVectors(new THREE.Vector3(0,1,0), dir.clone().normalize());\n const m = new THREE.Matrix4().compose(pos, q, new THREE.Vector3(1,1,1));\n g.applyMatrix4(m);\n barkGeos.push(g);\n const tip = pos.clone().add(dir.clone().multiplyScalar(len));\n if(depth >= maxDepth || rad < 0.02){\n // leaf clusters: 2-3\n addLeafCluster(tip, ...); \n return;\n }\n const n = depth===0? 4 : (2 + (rand<0.5?1:0));\n for(i...){\n const angle = (i/n)*PI*2 + rand;\n const spread = 0.5+rand*0.5; // radians from parent dir\n // build child dir: rotate parent dir by spread around perpendicular axis\n const axis = new THREE.Vector3(rand-0.5, rand-0.5, rand-0.5).cross(dir).normalize();\n const nd = dir.clone().applyAxisAngle(axis, spread*(0.6+Math.random()*0.6));\n // add upward bias\n nd.lerp(new THREE.Vector3(0,1,0), 0.15+depth*0.05).normalize();\n const startPos = pos.clone().add(dir.clone().multiplyScalar(len*(0.55+Math.random()*0.45)));\n branch(startPos, nd, len*(0.62+rand*0.2), rad*0.6, depth+1);\n }\n // sometimes a leaf cluster mid-branch for fullness at outer depths\n if(depth>=2 && Math.random()<0.5) addLeafCluster(point along, ...)\n }\n branch(new THREE.Vector3(0,0,0), new THREE.Vector3(0,1,0), 3.2, 0.35, 0);\n}\n```\n\nAdd slight trunk curve? Keep straight-ish; children give shape. Maybe give trunk slight lean and taper handled by radius ratios.\n\nLeaf cluster: \n```js\nfunction addLeafCluster(center, size){\n const planes = 2; // crossed\n const phase = Math.random()*Math.PI*2;\n const tint = Math.random()*0.7;\n for(let i=0;i terminal count maybe 150-250 clusters *2 quads = manageable (~500 quads = 1000 tris? plane=2 tris each; trivial). Cylinders segments 8 radial, 3 height — fine.\n\nMake canopy balanced: spread wider at top (spreading crown): upward bias small, spread big. Tune: depth0 children spread 0.7-1.0 rad, upward bias 0.25. Should look like a decent broadleaf tree. Also shorten children: len*0.68.\n\nLeaf size: 1.3-2.0 depending on depth (deeper = larger clusters to fill). size = 1.1 + depth*0.15.\n\nGround: CircleGeometry radius 30, rotated flat, grass texture repeat. Also scatter a few low-poly rocks? skip. Maybe a soft radial gradient darkening ring via second canvas texture — incorporate into grass canvas edges? The circle UVs — radial gradient needs radial UV mapping; simpler: big ground plane (100x100) with repeat texture; fog handles distance. Use fog! THREE.Fog matching sky bottom color, updates with time of day. Standard materials get fog free. \n\nFog color uniform updated with palette/time. scene.fog = new THREE.Fog(color, 25, 90).\n\nSky sphere radius 200, BackSide, fog:false in shader material. Stars at radius 180.\n\nFalling leaves: THREE.Points, 120, custom ShaderMaterial:\n- attributes: position (spawn in canopy ellipsoid), aRand\n- uniforms: uTime, uWind, uColor, uPixelRatio\n- vertex: y = mod(startY - t*speed, range); x += sin sway + wind push; size ~ 10-18 px; rotate? points can't rotate sprite texture w/o shader trick — pass rotation angle, rotate UV in fragment. Leaf sprite small texture reuse leafTexture? Draw a tiny single-leaf canvas texture. Rotate uv by angle in fragment. \n- fade near ground (y<0.2 -> alpha 0, respawn logic inherent via mod).\nSimple enough. Let me write it.\n\nSpawn logic: each particle has seed; y = H - mod(t*speed + seed*H, H) where H=8; x = baseX + sway + wind drift proportional to fall progress... Using mod, drift resets — fine visually if modest.\n\nPosition attribute = base spawn pos in disc radius 4 around trunk at heights 3..8. In shader compute animated pos. Alpha fade in bottom 0.5 and top spawn 0.3.\n\nOnly spawn count scaled by wind: discard points when aRand > uWindNorm? Vary alpha = step. Nice: more wind => more falling leaves.\n\nSound: \n```js\nlet audioCtx, masterGain, windGain, leafGain, windFilter, rustleFilter, started=false, muted=false;\nfunction initAudio(){ ... }\n```\nWhite noise buffer 2 sec, looped.\n\nWind layer: noise -> lowpass(300) -> gain(0.5). LFO osc 0.07Hz -> gain node(150) -> connect filter.frequency. Another LFO 0.11Hz on windGain.gain ±0.15.\nRustle: noise -> bandpass(3200, Q 0.8) -> gain 0.05. LFO 0.5Hz + wind factor.\nMaster gain 0.9 -> destination. Maybe a convolver? skip.\n\nsetWindLevel(v): windGain.gain.target = 0.15+v*0.5; rustle 0.02+v*0.18; filter freq target 250+v*400.\n\nBirds: chirp(): osc sine, freq.setValueCurve quick warbles: use linearRamp sequences: f 2400->3100->2600 over 0.15s repeated 2-3 times; gain env 0->0.12->0. schedule next 2.5-8s. Only when sound on & daytime? Fun: birds only in day; at night maybe crickets: rapid pulses at 4200Hz bandpass noise ticks... crickets = short noise bursts through highpass repeating 15Hz amplitude. Could do osc square 20Hz gating noise gain. Implement simple cricket: noise->bandpass(4500)->gain gated by square osc via gain.gain with setValueCurve? Simpler: osc(saw 4200)*tremolo. Eh — implement: cricketGain with LFO square 22Hz connected to gain.gain (scaled). Toggle by night factor. Might be annoying; volume tiny 0.03. OK include, subtle.\n\nKeep audio code compact but complete.\n\nUI HTML: \n- top-left panel: title \"Whispering Tree\", wind slider, sun slider, palette buttons (4 colored dots), sound button, info line (drag to orbit).\n- Loading? No.\n\nFonts: use system + Google font? Keep system stack to avoid extra deps, or include a Google font link for prettiness — fine to include.\n\nNow, sky shader:\n\n```glsl\nvarying vec3 vDir;\nuniform vec3 uTop; uniform vec3 uBottom; uniform vec3 uSunDir; uniform vec3 uSunColor; uniform float uSunI;\nvoid main(){\n vec3 d = normalize(vDir);\n float h = clamp(d.y, 0.0, 1.0);\n vec3 col = mix(uBottom, uTop, pow(h, 0.6));\n float s = max(dot(d, uSunDir), 0.0);\n col += uSunColor * (pow(s, 350.0) * 1.5 * uSunI); // disc\n col += uSunColor * (pow(s, 8.0) * 0.25 * uSunI); // halo\n // horizon glow\n col += uSunColor * 0.12 * pow(1.0 - abs(d.y), 6.0) * uSunI;\n gl_FragColor = vec4(col, 1.0);\n}\n```\nBelow horizon keep bottom color (mix handles since h clamped).\n\nTime-of-day mapping t∈[0,1]:\n- ang = lerp(0.05π, 0.95π, t)? Let sun elevation e = sin(π * t) hmm want sunrise at t=0.1, noon .5, sunset .9, with t=0/1 = night. azim = lerp(-1.2, 1.2, t).\n- sunDir = (cos(azim)*cosEl, sinEl, sin(azim)*cosEl) where el = π*(t-0.06)*1.0? Let's: el = lerp(-0.25, π+0.25, t) so sun goes below horizon at ends, giving night. sinEl negative at ends. dayF = smoothstep(0.15,0.45,sinEl)... define:\n - sunH = sin(el) maybe clamp.\n - dayF = smoothstep(0.2, 0.6, sunH)\n - duskF = (1-dayF) * smoothstep(-0.05, 0.2, sunH)?? Define duskF = smoothstep(-0.1,0.25,sunH)*(1-dayF)... simpler: compute three weights:\n nightW = 1 - smoothstep(-0.15, 0.05, sunH)\n dayW = smoothstep(0.25, 0.6, sunH)\n duskW = max(0, 1 - nightW - dayW)\n Colors = night*nightW + dusk*duskW + day*dayW for top, bottom, sun color, fog, light intensity = 0.15*nightW+0.9*duskW+1.25*dayW etc.\n\nUpdate: dirLight position = sunDir*40; color/intensity; hemi intensity 0.2+0.5*dayW; sky uniforms; fog color; star opacity = nightW; falling leaves unaffected.\n\nExposure constant.\n\nAlso cloud? skip — clean.\n\nShadow config: dirLight.shadow.camera ortho box ~ ±12, near 1 far 80, mapSize 2048, bias -0.0005, normalBias 0.02? tune: normalBias 0.5 maybe for leaf acne. Use radius blur (PCFSoft).\n\nCamera: pos (9, 5.5, 12) look at (0,4,0). Controls target (0,4,0), maxPolar 0.49π... allow slight below? min 0.1. enableDamping. maxDistance 40, minDistance 4.\n\nGround y=0. Tree at origin.\n\nGrass texture canvas 256: fill #4e7a3a base? Palette maybe shift with leaf palette? Ground stays greenish but autumn ground could go olive — nice: tint ground color per palette via material.color multiply (texture grayscale-ish). Make grass canvas neutral luminance greens... to keep simpler: draw actual green grass; palette change slightly adjusts material color tint (autumn -> multiply #d8b56a? would muddy). Keep ground static green; fine.\n\nAdd subtle flowers? skip. Rocks: 5 dodecahedron small gray with flat shading — adds composition. Include quickly (cheap). Also maybe a swing? no.\n\nPetals for blossom palette — falling leaves color updates.\n\nEdge cases: WebAudio requires gesture — button click. Also resume on visibility change? skip.\n\nLet me also add devicePixelRatio cap 2.\n\nWrite the final HTML now. Also add OrbitControls + BufferGeometryUtils from jsDelivr matching 0.128.0. Check mergeBufferGeometries exists in r128 — yes (added r125?). It existed as mergeBufferGeometries in r126+. OK.\n\nOne concern: onBeforeCompile with custom attributes — must ensure attributes exist on geometry, which they do. For depth material patch, geometry includes aData so fine, but depth material doesn't declare aTint usage — we skip tint there.\n\nAlso `#include ` exists in meshphysical fragment (map_fragment/color_fragment ordering: `` present). Yes.\n\nVertex: replace `#include ` — present in both standard and depth vertex shaders. \n\nLeaf material: MeshStandardMaterial({map, alphaTest:0.45, side:DoubleSide, roughness:0.85, metalness:0, color, emissive}). transparent false w/ alphaTest — good for depth.\n\nBark: MeshStandardMaterial({map:barkTex, roughness:0.95}) with wind injection (bark code). uTreeHeight uniform.\n\nbark wind must be subtle: amp 0.25*wind.\n\nTrunk base shouldn't move — hNorm^2 handles.\n\nNow grass shader? Standard is fine (with map). The user asked \"shader with light\" — we have multiple custom shaders (sky, falling leaves) + injected wind shaders + full lighting rig. Good enough; also I can add a custom \"leaf glow\" — no, enough.\n\nFalling leaves shader:\n\n```glsl\n// vertex\nattribute float aRand;\nuniform float uTime,uWind;\nvarying float vAlpha; varying float vRot;\nvoid main(){\n vec3 p = position;\n float fall = mod(uTime*(0.55+aRand*0.5)+aRand*17.0, 9.0);\n p.y = 9.0 - fall;\n p.x += sin(uTime*1.2+aRand*40.0)*0.6 + fall*uWind*0.55*vec? \n p.x += fall*0.9*uWind; p.z += fall*0.6*uWind;\n p.x += sin(fall*2.0+aRand*20.)*0.4;\n vRot = uTime*(1.0+aRand*2.0)+aRand*6.28;\n vAlpha = smoothstep(0.0,0.6,9.0-fall)*smoothstep(0.0,0.8,fall-0.0)*...; also gate by aRandwindGain->master\n // rustle\n bandpass 3400 Q0.7, rustleGain 0\n mkNoise()->rustleFilter->rustleGain->master\n // crickets\n const cf=C.createBiquadFilter(); bandpass 4800 Q6; cg gain 0\n const trem=C.createGain(); trem.gain.value=0; // amplitude gate via osc? Use osc square-> gainAudioParam through gain node scaling\n Actually: const lfo=C.createOscillator(); lfo.type='square'; lfo.frequency.value=24; const lg=C.createGain(); lg.gain.value=0.5; lfo.connect(lg).connect(trem.gain); trem.gain.value=0.5; -> pulsing 0..1\n mkNoise()->cf->trem->cg->master\n // wind LFOs\n lfo1 sine 0.07 -> gain 130 -> windFilter.frequency\n lfo2 sine 0.13 -> gain 0.12 -> windGain.gain\n ramp master to 0.9\n this.scheduleBird();\n },\n setWind(v){ if(!this.ctx)return; const t=this.ctx.currentTime; this.windGain.gain.setTargetAtTime(0.06+v*0.30, t, 0.4); this.rustleGain.gain.setTargetAtTime(v*0.14+0.01,t,0.3); this.windFilter.frequency.setTargetAtTime(240+v*520,t,0.5);} ,\n setNight(n){ cricketGain target n*0.05 },\n chirp(){ ... if day & on },\n toggle()\n};\n```\nBrown noise via brownian integrates — careful clipping; scale 3.5 typical.\n\nBird chirp impl:\n```js\nchirp(){ const C=this.ctx; if(!C||!this.on) return; if(dayFactor>0.4){ \n const o=C.createOscillator(), g=C.createGain(); o.type='sine';\n const t=C.currentTime; const f0=2200+Math.random()*1200;\n o.frequency.setValueAtTime(f0,t);\n const n=2+Math.floor(Math.random()*3);\n for(let i=0;ithis.chirp(), 2500+Math.random()*7000); }\n```\nKeep reference via this.birdTimer not needed.\n\nSound toggle button text updates; if first click -> start(); on=true; master ramp.\n\nUI sliders: input events set windUniforms.uWind.value (0..2), audio.setWind, gust CPU computed each frame: gust = 0.55 + 0.45*(sin(t*0.5)*0.5+sin(t*0.23+1.7)*0.5) mapped 0..1 — combine: g=0.5+0.5*sin(...)... keep simple: uGust = 0.6+0.4*Math.sin(t*0.4)+0.2*Math.sin(t*0.9) clamp 0.2..1.2.\n\nSun slider t 0..1 default 0.45.\n\nPalette buttons set leafColor, leafEmissive, tint target?, falling leaf color, maybe blossom also tints light pink? Keep: leaves color+emissive, particles color. Also small flowers? no.\n\nAlso palette changes: autumn ground tint? Set ground material.color: summer #ffffff, autumn #d9c9a8? multiply warm. blossom #ffeef5 slight, mystic #cfe8ff cool. Nice subtle.\n\nMystic palette: leaves teal #37b8a6, light stays. ok.\n\nWrite HTML/CSS: dark glass panel, range styling minimal, buttons. Title. Small credit footer. Responsive panel.\n\nAlso add double-click to reset camera? skip.\n\nLet me now write the whole file carefully, ensuring shader string correctness for r128 (begin_vertex etc. valid; uv attribute named uv; for points gl_PointCoord fine).\n\nBark texture canvas details (512x512): base #6b4f37; horizontal slight variation; vertical streaks; knots: few dark ellipses with rings. Repeat wrapping; on cylinder UV it wraps around circumference 1x and along height; set repeat (2,1)? Cylinder UV u goes around. repeat.set(2,2) maybe. fine.\n\nGrass canvas 256: base #567b3c; many small strokes darker/lighter greens random directions (like blades): 2500 lines len 2-6. plus patch noise: 40 radial blobs alpha 0.08 darker/lighter. repeat 10.\n\nAlso add subtle ground AO ring under tree: circle texture dark center radial? Place a radial-gradient dark circle mesh slightly above ground (y=0.01) opacity 0.35 — grounds the tree. Canvas radial gradient black->transparent. Include (cheap, pretty).\n\nRocks: 4 dodecahedrons random scale 0.2-0.5 gray #8a8d90 roughness 1 flatShading true, positions radius 3-7 random, castShadow.\n\nNow lighting rig:\n- dirLight color from time; intensity 1.3*day+dusk...\n- hemi: sky color top-ish, ground brownish, intensity 0.5+0.3day\n- Maybe small ambient 0.05. Hemi covers.\n\nRenderer: shadowMap PCFSoft, toneMapping ACES, exposure 1.15, outputEncoding sRGB.\n\nTextures encoding: set tex.encoding = sRGBEncoding for color maps.\n\nCamera fov 45.\n\nFrame loop: t=clock.getElapsedTime(); uTime=t; gust update; controls.update; renderer.render.\n\nSun update function called on slider + once.\n\nNow, sky sphere: SphereGeometry(220, 32, 15), BackSide ShaderMaterial, depthWrite false, fog false. Stars Points 500 positions on sphere radius 210 upper hemisphere random full sphere fine; PointsMaterial size 1.2 sizeAttenuation false, transparent, opacity nightW*0.9, color white, depthWrite false. Twinkle skip.\n\nFog: scene.fog = new THREE.Fog(0xaad4f5, 30, 120). Update color per time.\n\nGround plane 200x200? With fog to 120 fine; sky sphere 220 beyond fog far but shader fog false so visible. Ground plane radius 150 circle geometry. Grass repeat 40? PlaneGeometry(300,300) repeat 60. Blades size then ok.\n\nHmm plane 300 with fog far 120: distant ground fully fogged to fog color, sky near horizon bottom color — match fog color to horizon bottom color for seamless. I'll set fog color = bottom sky color each update. \n\ndirLight shadow camera: left/right/top/bottom ±14, near 5 far 90, position sunDir*45 + target 0.\n\nLeaf cluster orientation: random Euler all axes — planes crossed random; double-sided so fine. normal random → lighting varied; with DoubleSide standard material handles flipping? Standard material with DoubleSide lights backface using flipped normal — yes gl_FrontFacing handled.\n\nBut my wind code references objectNormal — fine.\n\nAlso normal flutter removed — using up flutter. ok.\n\nCheck merge: PlaneGeometry attributes: position, normal, uv + our aData(2), aTint(1) — consistent across all leaf geos. mergeBufferGeometries(leafGeos) → one geometry. Also need geometry.computeBoundingSphere after? merge does. ok.\n\nBark cylinders: position/normal/uv consistent (CylinderGeometry has those). Merge → bark mesh.\n\nSet castShadow/receiveShadow: bark cast+receive; leaves cast+receive (self-shadow acne on leaves? normalBias 0.6, bias -0.0002; alphaTest in depth handles holes; leaves receive fine). Ground receive.\n\ncustomDepthMaterial for leaves with map+alphaTest+wind. Also for bark? Bark wind displacement small; shadow mismatch minor; patch anyway same function (bark code) — depth material patch uses begin_vertex replacement, works. Do it for consistency.\n\nWait: MeshDepthMaterial has no map by default—pass map in constructor params works? MeshDepthMaterial supports map. Yes.\n\nAlso for blossom palette, maybe scale? no.\n\nTint injection detail: I said multiply diffuse by vec3(1.25,1.15,0.55)*vTint mix — for blossom palette yellowing pink → salmon, fine.\n\nAlternatively vary lightness: mix(diffuse, diffuse*1.35, vTint) simpler and palette-safe. Use brightness variation: `diffuseColor.rgb *= (1.0 + vTint*0.45);` plus slight hue toward yellow-green only for green? Keep brightness-only — safe. Add subtle: diffuseColor.rgb = mix(diffuseColor.rgb, diffuseColor.rgb*vec3(1.3,1.25,0.9), vTint*0.6); mild warm. ok mild.\n\nNow UI text: english. Buttons: Sound 🔇/🔊. Palette swatches with labels. Sliders labeled Wind, Sun. Hint \"Drag to orbit • Scroll to zoom\".\n\nMobile touch: orbit controls fine.\n\nWrite everything now. Also guard WebGL fail? skip.\n\nEstimate final ~650 lines. Good.\n\nOne more: falling leaves uTex single leaf canvas: draw one leaf: bezier leaf shape greenish-white gradient + vein. Since tinted by uColor uniform, draw white/gray leaf with vein darker, alpha shape.\n\ngl_PointSize with perspective: size*(scale/ -mvPosition.z), scale = height/2 / tan(fov/2)? Use uniform uScale = renderer height * 0.5 / tan(fov*0.5 rad). Simpler: gl_PointSize = uSize * (140.0 / -mv.z). tune constant 140 for fov45 at ~10 dist gives size px = uSize*14. uSize attr 0.6-1.2 → ~8-17px at 10m. ok.\n\nNow colors of sky sets:\n\nday: top #2f6fd0? Let's pick: topDay(0x2a6fd6) bottomDay(0xbfe3f7) sunDay(0xfff3d6)\ndusk: top(0x3a3f77) bottom(0xff9e5e) sun(0xffb257)\nnight: top(0x050a1e) bottom(0x101c3a) sun(0x9fb4ff) — moon glow! At night sun dir below horizon; glow won't show (sun below). Could turn sun into moon: when night, flip sunDir for glow? Nice: moonDir = -sunDir when sunH<0, use moon color, smaller disc. Implement: glowDir = sunH>0.02? sunDir : normalize(-sunDir); sunI: day 1, night 0.5. Moon disc pow 800. Eh keep simple: use same disc with sunI=0.6 & bluish — looks like moon. \n\ndirLight at night: intensity 0.12 color #7e94ff (moonlight), position = -sunDir*45. Handle in update: if sunH<0: light from moon dir.\n\nHemi night: 0.15 bluish.\n\nFog night #0d1730.\n\nFalling leaves unaffected.\n\nStar opacity = nightW.\n\nFireflies at night?? skip. Enough.\n\nAlso initial defaults: wind 1.0, sun t=0.42 (afternoon), palette summer.\n\ndirLight.target at origin default — add to scene.\n\nNow write code. Careful with template literals inside onBeforeCompile strings (use string concat to avoid nested backticks issues — nested backticks fine if separate strings; but ${} interpolation accidental—use plain strings).\n\nAlso add uTreeHeight uniform for bark: constant 8.5.\n\ngust uniform shared object windUniforms.\n\nLet me write bark vertex code string:\n\n```js\nconst BARK_VERT = `\nfloat hN = clamp(transformed.y / uTreeHeight, 0.0, 1.0);\nfloat bendA = hN * hN;\nfloat w1 = sin(uTime * 1.4 + transformed.y * 0.4);\nfloat w2 = sin(uTime * 3.1 + transformed.x * 0.8 + transformed.z * 0.6);\nfloat wob = (w1 + 0.5 * w2) * bendA * uWind * uGust;\ntransformed.x += wob * 0.28 * 0.83;\ntransformed.z += wob * 0.28 * 0.55;\n`;\n```\n\nLEAF_VERT:\n```glsl\nvTint = aTint;\nfloat ph = aData.x;\nfloat fl = aData.y;\nfloat gg = uGust * (0.75 + 0.25 * sin(uTime * 0.4 + ph * 0.35));\nfloat sw = sin(uTime * 1.6 + ph) * 0.6 + sin(uTime * 3.3 + ph * 1.9) * 0.4;\nfloat amp = sw * gg * uWind * fl;\ntransformed.x += amp * 0.42 * 0.83;\ntransformed.z += amp * 0.42 * 0.55;\ntransformed.y += sin(uTime * 1.15 + ph * 1.3) * 0.10 * gg * uWind * fl + sin(uTime * 5.2 + ph * 8.0) * 0.03 * uWind * fl;\n```\namp up to ~0.42*1*gust(≤1.2)*wind(≤2)*1.2 ≈ 1.2 max — strong at wind 2, ok.\n\nuWind slider 0..2 default 0.9.\n\nHeaders for each: \ncommon header: `uniform float uTime; uniform float uWind; uniform float uGust;`\nbark adds `uniform float uTreeHeight;`\nleaf adds `attribute vec2 aData; attribute float aTint; varying float vTint;`\n\nNote: for depth material leaf, attributes declared but depth program also compiled with same geometry — attributes present, fine.\n\nFragment patch leaf: prepend `varying float vTint;` and replace color_fragment.\n\nPotential issue: r128 shader chunk `color_fragment` exists — yes.\n\nAlso must set material.customProgramCacheKey? onBeforeCompile same for both materials but different code paths (leaf vs bark) — default cache key includes onBeforeCompile.toString() — our functions differ via closures but toString may be same source → cache collision! In r128, programCacheKey = onBeforeCompile.toString() — if identical strings, bark might reuse leaf program missing attributes... To be safe set material.customProgramCacheKey = () => unique string. r128 supports customProgramCacheKey (added r118? It's in r128, yes). Set distinct keys.\n\nDepth materials: default depth already has own key; our onBeforeCompile differs similarly—set keys too.\n\nTime to write it all out. I'll aim for polished, commented, organized code.\n\nCSS: panel top-left, backdrop blur, rounded, subtle border, small swatch circles, range inputs styled accent-color. Title big serif? Use 'Georgia' fallback or Google font 'Cormorant'? Use system: font-family: 'Segoe UI' etc. Add letterspacing. Nice enough without external font. Actually a Google font adds charm: use 'Marcellus' or 'Cormorant Garamond' for title + 'Inter' body. Include link. Fine.\n\nStructure:\n\n```html\n

Whispering Tree

Wind

Sun

buttons data-pal\n \n

Drag to orbit · Scroll to zoom

\n```\n\nPalettes: summer 🌿, autumn 🍂, blossom 🌸, mystic 🔮 as swatch circles colored.\n\nJS modules order: renderer/scene/camera/controls → textures → materials w/ wind patch → tree build → ground/rocks/sky/stars/leavesParticles → lights → audio → UI wiring → loop.\n\nResize handler. DPR cap 2. Shadow autoUpdate fine.\n\nWrite final answer with brief description + full code block. Keep explanation concise.\n\nLet me now write out the code fully, mentally checking syntax.\n\n```html\n\n\n\n\n\nWhispering Tree — 3D\n\n\n\n\n

...

maybe css vignette overlay for mood\n\n\n\n\n\n\n```\n\nCSS vignette: pointer-events none, radial gradient.\n\nNow the big script:\n\n```js\n// ---------- Basics ----------\nconst renderer = new THREE.WebGLRenderer({antialias:true});\nrenderer.setPixelRatio(Math.min(devicePixelRatio,2));\nrenderer.setSize(innerWidth,innerHeight);\nrenderer.shadowMap.enabled = true;\nrenderer.shadowMap.type = THREE.PCFSoftShadowMap;\nrenderer.toneMapping = THREE.ACESFilmicToneMapping;\nrenderer.toneMappingExposure = 1.12;\nrenderer.outputEncoding = THREE.sRGBEncoding;\ndocument.body.appendChild(renderer.domElement);\n\nconst scene = new THREE.Scene();\nscene.fog = new THREE.Fog(0xbfe3f7, 28, 110);\n\nconst camera = new THREE.PerspectiveCamera(45, innerWidth/innerHeight, 0.1, 500);\ncamera.position.set(10.5, 5.2, 13.5);\n\nconst controls = new THREE.OrbitControls(camera, renderer.domElement);\ncontrols.target.set(0, 4.2, 0);\ncontrols.enableDamping = true; controls.dampingFactor = 0.06;\ncontrols.maxPolarAngle = Math.PI*0.495; controls.minDistance=4; controls.maxDistance=45;\n```\n\nWind uniforms:\n```js\nconst windUniforms = {\n uTime:{value:0}, uWind:{value:0.9}, uGust:{value:1}, uTreeHeight:{value:8.6}\n};\n```\n\nTextures: bark, leaf cluster, single leaf, grass, AO blob.\n\n```js\nfunction canvasTex(size, draw, repeat){\n const c=document.createElement('canvas'); c.width=c.height=size;\n draw(c.getContext('2d'), size);\n const t=new THREE.CanvasTexture(c);\n t.encoding=THREE.sRGBEncoding;\n if(repeat){t.wrapS=t.wrapT=THREE.RepeatWrapping;}\n return t;\n}\n```\n\nBark draw:\n```js\nconst barkTex = canvasTex(512,(x,s)=>{\n x.fillStyle='#6b4c36'; x.fillRect(0,0,s,s);\n // large soft variation\n for(let i=0;i<60;i++){ const g=x.createRadialGradient(rand*s,rand*s,10,...)... } \n```\nSimplify: vertical streaks loop:\n```js\nfor(let i=0;i<2600;i++){\n const px=Math.random()*s, py=Math.random()*s, len=8+Math.random()*46, w=1+Math.random()*2.5;\n const d=Math.random();\n x.fillStyle = d<0.5 ? `rgba(52,36,24,${0.08+Math.random()*0.22})` : `rgba(140,108,78,${0.06+Math.random()*0.18})`;\n x.fillRect(px,py,w,len);\n}\n// deep cracks\nx.strokeStyle='rgba(30,20,14,0.5)'; \nfor(let i=0;i<40;i++){ x.lineWidth=1+Math.random()*2; x.beginPath(); let px=Math.random()*s, py=Math.random()*s; x.moveTo(px,py); for(let k=0;k<5;k++){px+=(Math.random()-0.5)*14; py+=14+Math.random()*20; x.lineTo(px,py);} x.stroke(); }\n// knots\nfor(let i=0;i<6;i++){ const kx=..., ky=..., r=8+Math.random()*14; const g=x.createRadialGradient(kx,ky,2,kx,ky,r); g.addColorStop(0,'rgba(40,26,18,0.9)'); g.addColorStop(0.6,'rgba(80,58,40,0.5)'); g.addColorStop(1,'rgba(80,58,40,0)'); x.fillStyle=g; x.beginPath(); x.ellipse(kx,ky,r*0.7,r,0,0,7); x.fill(); }\nbarkTex.repeat.set(2,1)? set after creation: barkTex.repeat.set(1.5, 2)? We'll set repeat (2,2).\n```\n\nLeaf cluster texture (drawn light/neutral for tinting):\n```js\nconst leafTex = canvasTex(256,(x,s)=>{\n x.clearRect(0,0,s,s);\n const cx=s/2;\n for(let i=0;i<90;i++){\n const a=Math.random()*Math.PI*2, r=Math.pow(Math.random(),0.6)*s*0.42;\n const px=cx+Math.cos(a)*r, py=cx+Math.sin(a)*r;\n const ls=6+Math.random()*11; const rot=Math.random()*Math.PI;\n const shade=200+Math.floor(Math.random()*55); // light gray-white\n const shade2=shade-70;\n x.save(); x.translate(px,py); x.rotate(rot);\n const g=x.createLinearGradient(0,-ls,0,ls);\n g.addColorStop(0,`rgb(${shade},${shade},${shade})`);\n g.addColorStop(1,`rgb(${shade2},${shade2},${shade2})`);\n x.fillStyle=g;\n x.beginPath(); x.ellipse(0,0,ls*0.45,ls,0,0,Math.PI*2); x.fill();\n // vein\n x.strokeStyle='rgba(90,90,90,0.35)'; x.lineWidth=1;\n x.beginPath(); x.moveTo(0,-ls*0.8); x.lineTo(0,ls*0.8); x.stroke();\n x.restore();\n }\n});\n```\nAlpha from drawing only (transparent bg). ellipse full 2π. good. alphaTest 0.4.\n\nSingle leaf tex 64 similar one ellipse.\n\nGrass:\n```js\nconst grassTex = canvasTex(256,(x,s)=>{\n x.fillStyle='#5d8140'; x.fillRect(0,0,s,s);\n for(let i=0;i<50;i++){ blob radial darker/lighter alpha .07 }\n for(let i=0;i<3200;i++){ const px=rand,py=rand; const l=2+Math.random()*5; const an=-Math.PI/2+(Math.random()-0.5)*1.2;\n const greens = ['#4c7034','#6b9448','#527a38','#7aa354','#41632c']; x.strokeStyle=greens[i%5]; x.globalAlpha=0.5; lineWidth1; line(px,py,px+cos*l,py+sin*l); }\n x.globalAlpha=1;\n}, true); grassTex.repeat.set(48,48);\n```\n\nAO blob texture 128 radial black alpha .5 → 0.\n\nMaterials & wind patch:\n\n```js\nfunction patchWind(mat, kind){\n mat.onBeforeCompile = (sh)=>{\n sh.uniforms.uTime=windUniforms.uTime; sh.uniforms.uWind=windUniforms.uWind; sh.uniforms.uGust=windUniforms.uGust; sh.uniforms.uTreeHeight=windUniforms.uTreeHeight;\n let head = 'uniform float uTime;uniform float uWind;uniform float uGust;uniform float uTreeHeight;\\n';\n let body;\n if(kind==='leaf'){\n head += 'attribute vec2 aData;attribute float aTint;varying float vTint;\\n';\n body = `\n vTint = aTint;\n float ph=aData.x; float fl=aData.y;\n float gg=uGust*(0.75+0.25*sin(uTime*0.45+ph*0.35));\n float sw=sin(uTime*1.6+ph)*0.6+sin(uTime*3.3+ph*1.9)*0.4;\n float amp=sw*gg*uWind*fl;\n transformed.x+=amp*0.35; transformed.z+=amp*0.23;\n transformed.y+=sin(uTime*1.15+ph*1.3)*0.10*gg*uWind*fl+sin(uTime*5.2+ph*8.0+transformed.x*2.0)*0.035*uWind*fl;\n `;\n sh.fragmentShader = 'varying float vTint;\\n'+sh.fragmentShader.replace('#include ', '#include \\n diffuseColor.rgb = mix(diffuseColor.rgb, diffuseColor.rgb*vec3(1.28,1.22,0.82), vTint*0.65);');\n } else {\n body = `\n float hN=clamp(transformed.y/uTreeHeight,0.0,1.0);\n float bendA=hN*hN;\n float wob=(sin(uTime*1.35+transformed.y*0.4)+0.5*sin(uTime*3.0+transformed.x*0.7+transformed.z*0.5))*bendA*uWind*uGust;\n transformed.x+=wob*0.26*0.83; transformed.z+=wob*0.26*0.55;\n `;\n }\n sh.vertexShader = head + sh.vertexShader.replace('#include ', '#include \\n'+body);\n };\n mat.customProgramCacheKey = ()=> 'wind_'+kind;\n}\n```\nWait: for depth materials the cache key must also differ from base depth: customProgramCacheKey 'wind_depth_leaf'. And onBeforeCompile leaf includes attribute declarations — depth program compiled with these, attributes exist in geometry, ok. But vTint varying in depth fragment injection — we inject only for non-depth leaf. Handle kind 'leafDepth': vertex with attributes but no vTint assign? Assign fine (varying declared only in vertex → link error if fragment lacks? Declaring varying in vertex without fragment use is allowed? GLSL: varying declared in vertex but not fragment — linker OK (it's just unused). Actually declaring and writing a varying not declared in fragment is fine. But declaring in vertex without writing also fine. To be safe use separate kind without varying:\n\nkind==='leafDepth': head includes attributes only; body same minus vTint.\n\nSimplify: body uses `#ifdef` no... just create function with flags (isLeaf, isDepth).\n\nMaterials:\n```js\nconst barkMat = new THREE.MeshStandardMaterial({map:barkTex, roughness:0.92, metalness:0.0, color:0xb9a48e? keep white});\n```\nTint bark color slightly: color 0xffffff fine.\npatchWind(barkMat,false,false).\nbarkDepth = new THREE.MeshDepthMaterial({depthPacking:THREE.RGBADepthPacking}); patchWind depth bark.\n\nleafMat = MeshStandardMaterial({map:leafTex, alphaTest:0.42, side:THREE.DoubleSide, roughness:0.8, metalness:0, color: palette.leaf, emissive: palette.leaf, emissiveIntensity:0.12});\nleafDepth = MeshDepthMaterial({depthPacking, map:leafTex, alphaTest:0.42}); patch leaf depth.\n\nTree build (as planned). Then meshes:\n```js\nconst barkMesh=new THREE.Mesh(barkGeo,barkMat); barkMesh.castShadow=true; barkMesh.receiveShadow=true; barkMesh.customDepthMaterial=barkDepth;\nconst leafMesh=new THREE.Mesh(leafGeo,leafMat); castShadow/receive true; customDepthMaterial=leafDepth;\n```\n\nGround: PlaneGeometry(300,300) rotateX(-π/2), MeshStandardMaterial({map:grassTex, roughness:1}); receiveShadow.\nAO circle: PlaneGeometry(9,9) with blobTex transparent depthWrite false, y 0.02, renderOrder 1? blending normal, opacity .55. PolygonOffset to avoid z-fight — y offset enough.\n\nRocks loop.\n\nSky:\n```js\nconst skyUni={ uTop:{value:new THREE.Color()}, uBottom:{value:new THREE.Color()}, uSunDir:{value:new THREE.Vector3(0,1,0)}, uSunColor:{value:new THREE.Color()}, uSunI:{value:1} };\nShaderMaterial side:BackSide, depthWrite:false, fog:false? ShaderMaterial ignores fog unless fog:true + chunks; default false. good.\nvertex: varying vec3 vDir; vDir=position; gl_Position=projectionMatrix*modelViewMatrix*vec4(position,1.0); also gl_Position.z = gl_Position.w * 0.99999? to push far? sphere radius 220 < camera far 500 fine.\nfrag as planned.\n```\n\nStars: BufferGeometry 600 positions random sphere 210 (y>−0.1 filter: if y<0 resample upward? just allow, hidden by ground fog? stars below horizon visible through ground? Ground plane occludes (opaque). fine.) PointsMaterial({color:0xffffff,size:1.6,sizeAttenuation:false,transparent:true,opacity:0,depthWrite:false,fog:false}).\n\nFalling leaves Points with ShaderMaterial:\n```js\nconst fallUni={ uTime:windUniforms.uTime (share), uWind:windUniforms.uWind, uTex:{value:singleLeafTex}, uColor:{value:new THREE.Color(palette.leaf)} };\nvertex:\nattribute float aRand; varying float vA; varying float vR;\nuniform float uTime,uWind;\nvoid main(){\n vec3 p=position;\n float sp=0.5+aRand*0.6;\n float fall=mod(uTime*sp+aRand*20.0,9.5);\n p.y=9.5-fall;\n p.x+=fall*(0.55+0.45*aRand)*uWind*0.83 + sin(uTime*1.3+aRand*40.0+fall)*0.5;\n p.z+=fall*(0.55+0.45*aRand)*uWind*0.55 + cos(uTime*1.1+aRand*30.0+fall*1.2)*0.5;\n vR=uTime*(1.5+aRand*3.0)+aRand*6.28;\n float show=step(aRand, clamp(uWind*0.55+0.15,0.0,1.0));\n vA=smoothstep(0.0,0.5,fall)*smoothstep(9.5,8.6,fall)... \n```\nfade near ground: alpha fade when p.y<0.4: `vA*=smoothstep(0.05,0.5,p.y);` top fade: fall small → p.y near 9.5 spawn fade in: `*smoothstep(9.5,9.0,p.y)`.\n gl_PointSize: `float sz=(0.55+aRand*0.6); gl_PointSize = sz*(180.0/-mv.z);` mv=modelViewMatrix*vec4(p,1.0). At dist 12 → 180/12=15*sz(0.55..1.15) ≈ 8..17px good.\nfragment:\n```\nuniform sampler2D uTex; uniform vec3 uColor; varying float vA,vR;\nvec2 uv=gl_PointCoord-0.5; float c=cos(vR),s=sin(vR); uv=mat2(c,-s,s,c)*uv*1.1; uv+=0.5;\nvec4 t=texture2D(uTex,uv); if(t.a<0.35) discard;\ngl_FragColor=vec4(uColor*(0.75+t.r*0.35), t.a*vA);\n```\ntransparent:true, depthWrite:false.\n\nPositions: 150 pts, x/z in disc r=0.8..4.2 (canopy edge biased), y base 0 (we override y in shader with fall from 9.5? but spawn heights vary by aRand: use p.y=9.5-fall gives all falling from 9.5 top — canopy is ~3.5..8.5; adjust: top=7.0+aRand*2.0; fall range = top (to ground 0). Let me: float top=6.5+aRand*2.5; float fall=mod(uTime*sp+aRand*20.0, top); p.y=top-fall; fades accordingly. top fade smoothstep(top, top-0.5, p.y) i.e. smoothstep(0.0,0.5,fall) works for spawn since fall=0 at top. ground fade smoothstep(0.05,0.5,p.y). good.\n\nLights:\n```js\nconst sun=new THREE.DirectionalLight(0xffffff,1.2); sun.castShadow=true; mapSize 2048; cam ±13; near2 far90; bias -0.0004; normalBias 0.5? normalBias in world units — 0.05? For leaf acne use normalBias 0.1? Try 0.05 & bias -0.0003. Add scene.add(sun); scene.add(sun.target);\nconst hemi=new THREE.HemisphereLight(0xbfd9ff,0x6b5a43,0.55);\n```\n\nTime-of-day update(t):\n```js\nconst el = THREE.MathUtils.lerp(-0.28, Math.PI+0.28, t);\nconst az = THREE.MathUtils.lerp(-1.15, 1.15, t);\nconst sunH=Math.sin(el);\nconst dir=new THREE.Vector3(Math.cos(az)*Math.cos(el), sunH, Math.sin(az)*Math.cos(el)).normalize();\nconst dayW=smooth(0.28,0.62,sunH); const nightW=1-smooth(-0.18,0.04,sunH); const duskW=Math.max(0,1-dayW-nightW);\nfunction mix3(a,b,c){ return a.clone().multiplyScalar(nightW).add(b.clone().multiplyScalar(duskW)).add(c.clone().multiplyScalar(dayW)); }\ntop=mix3(nightTop,duskTop,dayTop) etc.\nskyUni updates; fog.color=bottom-ish (mix toward neutral? just bottom).\nif(sunH>0.02){ lightDir=dir; sunI=0.55+0.65*dayW+0.2? } else { lightDir=dir.clone().negate(); moon mode }\nsun.position.copy(lightDir).multiplyScalar(42); sun.color=mix3(moonC,duskSunC,daySunC); sun.intensity=nightW*0.22+duskW*0.85+dayW*1.35;\nhemi.intensity=0.18+0.45*dayW+0.15*duskW; hemi.color=top lighten; groundColor fixed.\nskyUni.uSunDir: for glow use lightDir always (sun or moon) with uSunI = day? 1.0 : 0.55, uSunColor= sun disc color: night→#cdd8ff, dusk→#ffc98a, day→#fff4d8.\nstars opacity=nightW*0.85.\nAudioSys.setNight(nightW); dayFactor global for birds = dayW.\n```\n\nsmooth helper: `const smooth=(a,b,x)=>{const t=Math.min(1,Math.max(0,(x-a)/(b-a)));return t*t*(3-2*t);}`\n\nPalettes:\n```js\nconst PALETTES={\n summer:{leaf:0x57a83e, emis:0x2f6b1f, ground:0xffffff, fall:0x6fae45},\n autumn:{leaf:0xd9852b, emis:0x8a3f10, ground:0xe6d3ac, fall:0xe09a35},\n blossom:{leaf:0xf4b8d0, emis:0xb3567e, ground:0xffe9f2, fall:0xf7c3d8},\n mystic:{leaf:0x3fb9a8, emis:0x1c5f66, ground:0xd6ecff, fall:0x59cfc0}\n};\napply: leafMat.color.set(p.leaf); leafMat.emissive.set(p.emis); leafMat.emissiveIntensity=0.14; groundMat.color.set(p.ground); fallUni.uColor.value.set(p.fall);\n```\nAlso blossom/emissive glow nicer at dusk. fine.\n\nAudio module (as designed). Birds only if dayW>0.45 and audio on.\n\nUI wiring: sliders; palette buttons (class active); sound button toggles: first creates ctx (resume), set on; label update; also muted toggling master gain ramp.\n\nAnimation loop:\n```js\nconst clock=new THREE.Clock();\nfunction animate(){ requestAnimationFrame(animate);\n const t=clock.getElapsedTime();\n windUniforms.uTime.value=t;\n const g=0.62+0.28*Math.sin(t*0.37)+0.18*Math.sin(t*0.83+1.3)+0.1*Math.sin(t*1.7);\n windUniforms.uGust.value=Math.max(0.15,g);\n controls.update(); renderer.render(scene,camera);\n}\n```\n\nResize.\n\nAlso initial updateSun(0.42); applyPalette('summer'); AudioSys.setWind(0.9) after start.\n\nSound toggle logic:\n```js\nsoundBtn.onclick=()=>{ if(!AudioSys.ctx){AudioSys.init(); AudioSys.setWind(currentWind);} AudioSys.on=!AudioSys.on; const t=AudioSys.ctx.currentTime; AudioSys.master.gain.cancelScheduledValues(t); AudioSys.master.gain.setTargetAtTime(AudioSys.on?0.85:0.0,t,0.3); soundBtn.textContent=AudioSys.on?'🔊 Sound On':'🔇 Sound Off'; soundBtn.classList.toggle('on',AudioSys.on); };\n```\nInit starts birds scheduling loop always but chirp checks this.on.\n\nEdge: AudioContext suspended until gesture — created in click handler so running.\n\nCricket LFO connect: \n```js\nconst lfo=C.createOscillator(); lfo.type='square'; lfo.frequency.value=23;\nconst lfoG=C.createGain(); lfoG.gain.value=0.5;\nlfo.connect(lfoG); lfoG.connect(trem.gain); trem.gain.value=0.5; lfo.start();\n```\ntrem.gain then oscillates 0..1. cg gain small.\n\nWind LFOs similar: lfo sine .07 → g 140 → windFilter.frequency; lfo2 .13 → g .1 → windGain.gain (gain must stay positive: base set by setWind ~0.06..0.36; ±0.1 ok at low end slight negative clamp? WebAudio gain negative = phase invert, no harm audibly. fine.)\n\nNoise source: create two sources (wind/rustle) from same buffer ok.\n\nmaster.connect destination; also maybe gentle compressor: DynamicsCompressor between master & destination — nice to avoid clipping with birds. add.\n\nAlright — also mention in hint that sound includes wind/birds.\n\nNow finalize palette swatch colors for buttons (CSS background = representative color).\n\nI think code is ready to write. Also add subtle camera intro animation? skip.\n\nTitle: \"The Whispering Tree\". Add small footer \"Procedural · Three.js\".\n\nLet me also double check mergeBufferGeometries import name: THREE.BufferGeometryUtils.mergeBufferGeometries(geometries, useGroups=false). yes r128.\n\nCylinderGeometry in r128 exists (CylinderBufferGeometry alias too). PlaneGeometry exists.\n\nOne more check: `x.ellipse` with rotation param: x.ellipse(kx,ky,rx,ry,rot,start,end). For knots used end 7 (~2π). ok.\n\nFor leaf cluster texture ensure leaves cover edges to make alphaTest shape blobby — 90 leaves radius .42*s fine.\n\nLeaf plane size 1.2-1.9; canopy clusters count maybe ~250 → 500 quads ok.\n\nBranch recursion count: depth0: 3-4; depth1..: 2-3 → worst 4*3^4=324 tips — ok. Cylinder radialSegments 7, heightSegments 2.\n\nTrunk: add slight random lean: initial dir (0.05,1,0.03) normalized.\n\nAlso branch start offset: children start at 0.5..0.95 along parent — but geometry branch was drawn from pos to tip; children from midpoints create natural forks. Radius of child ∝ parent remaining? childRad=rad*(0.55+rand*0.15).\n\nLeaf clusters also at some non-terminal outer nodes for fullness: if depth>=2 && rand<0.6 add cluster at point 0.6 along.\n\nCluster size grows with depth: size=1.05+depth*0.18+rand*0.3.\n\nAlso bend branches upward bias stronger at depth: nd.lerp(up, 0.12+0.06*depth).\n\nSpread base: rotate by axis perp: compute perp = cross(dir, randomVec).normalize; if degenerate pick other. angle=0.55+rand*0.55 for depth0 (wide), deeper 0.35+rand*0.45.\n\nRandom helper `const R=Math.random;`\n\nTree height ~ trunk 3.0 + 0.68^depth*3 sums ~ 3+2+1.4+... ≈ 8. uTreeHeight 8.6 good.\n\nNow finalize fragment tint injection string replace target `#include ` present in r128 standard frag — yes.\n\nPotential pitfall: `attribute` keyword in GLSL1 — r128 uses WebGL1-style attributes by default (WebGL2 with `#version 300 es`? r128 default uses GLSL1 shaders compiled; 'attribute'/'varying' valid). Yes fine.\n\nPoints shader material uses attribute aRand declared; position attribute auto. uniforms declarations must not redeclare modelViewMatrix etc (auto-added for ShaderMaterial? ShaderMaterial includes built-in uniforms declarations: modelViewMatrix, projectionMatrix, etc. and attribute position are predeclared in ShaderMaterial vertex? For ShaderMaterial, Three prepends declarations of common uniforms/attributes. Yes: position, normal, uv, modelMatrix... declared. So don't redeclare position; declare only aRand. good.\n\nSky ShaderMaterial same.\n\nCheck points frustumCulled false (since we move in shader) — set fallMesh.frustumCulled=false. Also leafMesh bounding: merged geometry bounds correct (wind displacement beyond bounds ~1.2 — could clip shadow camera? bounds fine for culling since camera near tree; set leafMesh.frustumCulled default true with computed bounds + displacement small ok.)\n\nBark/leaf matrices identity at origin.\n\nWrite CSS:\n\n```css\n*{margin:0;padding:0;box-sizing:border-box}\nhtml,body{height:100%;overflow:hidden;background:#0b1020;font-family:'Inter',sans-serif}\ncanvas{display:block}\n#vignette{position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at center,transparent 55%,rgba(0,0,0,0.35) 100%);}\n#ui{position:fixed;top:18px;left:18px;padding:18px 20px;background:rgba(12,16,28,0.55);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,0.12);border-radius:16px;color:#eef2ff;width:230px;box-shadow:0 10px 40px rgba(0,0,0,0.35);user-select:none}\nh1{font-family:'Cormorant Garamond',serif;font-size:24px;letter-spacing:.5px;margin-bottom:2px;background:linear-gradient(90deg,#cde6b0,#8fd0a8);-webkit-background-clip:text;background-clip:text;color:transparent}\n.sub{font-size:11px;opacity:.6;margin-bottom:14px}\n.row{margin:10px 0}\nlabel{display:block;font-size:11px;text-transform:uppercase;letter-spacing:1.5px;opacity:.75;margin-bottom:5px}\ninput[type=range]{width:100%;accent-color:#8fd0a8;cursor:pointer}\n.pals{display:flex;gap:8px;margin:6px 0 12px}\n.pal{flex:1;height:26px;border-radius:8px;border:2px solid transparent;cursor:pointer;transition:.2s;outline:none}\n.pal.active{border-color:#fff;transform:translateY(-2px)}\n#sound{width:100%;padding:9px;border-radius:10px;border:1px solid rgba(255,255,255,0.18);background:rgba(255,255,255,0.08);color:#eef2ff;font-size:13px;cursor:pointer;transition:.2s;font-family:inherit}\n#sound:hover{background:rgba(255,255,255,0.16)}\n#sound.on{background:rgba(143,208,168,0.25);border-color:rgba(143,208,168,0.6)}\n.hint{margin-top:10px;font-size:10.5px;opacity:.5;text-align:center}\n@media(max-width:600px){#ui{width:190px;padding:14px}}\n```\n\nPalette swatch backgrounds: summer linear-gradient(#57a83e,#9ed66a); autumn (#d9852b,#e8b04a); blossom (#f4b8d0,#ffe3ee); mystic (#3fb9a8,#7ee6d8).\n\nHTML rows: Wind slider with value display? keep simple.\n\nNow write the AudioSys fully:\n\n```js\nconst AudioSys={\n ctx:null,on:false,\n init(){\n const C=this.ctx=new (window.AudioContext||window.webkitAudioContext)();\n this.master=C.createGain(); this.master.gain.value=0;\n const comp=C.createDynamicsCompressor();\n this.master.connect(comp); comp.connect(C.destination);\n const len=C.sampleRate*2, buf=C.createBuffer(1,len,C.sampleRate), d=buf.getChannelData(0);\n let last=0; for(let i=0;i{const s=C.createBufferSource();s.buffer=buf;s.loop=true;s.start();return s;};\n // wind bed\n this.windFilter=C.createBiquadFilter(); this.windFilter.type='lowpass'; this.windFilter.frequency.value=320; this.windFilter.Q.value=0.6;\n this.windGain=C.createGain(); this.windGain.gain.value=0.12;\n src().connect(this.windFilter); this.windFilter.connect(this.windGain); this.windGain.connect(this.master);\n // rustle\n this.rustleFilter=C.createBiquadFilter(); bandpass 3000 Q .8; this.rustleGain gain .04; chain connect.\n // crickets\n const cf=C.createBiquadFilter(); type bandpass freq 5200 Q 8;\n this.trem=C.createGain(); this.trem.gain.value=0.5;\n const lfo3=C.createOscillator(); square 27Hz; const lg=C.createGain(0.5); lfo3.connect(lg); lg.connect(this.trem.gain); lfo3.start();\n this.cricketGain=C.createGain(); gain 0;\n src().connect(cf); cf.connect(this.trem); this.trem.connect(this.cricketGain); this.cricketGain.connect(this.master);\n // wind movement LFOs\n const l1=C.createOscillator(); sine .07; g1 gain 130; l1.connect(g1); g1.connect(this.windFilter.frequency); l1.start();\n const l2=C.createOscillator(); sine .11; g2 gain .35; l2.connect(g2); g2.connect(this.rustleFilter.frequency)? hmm rustle freq wobble 3000±? g2 600. do freq wobble.\n Actually also gain wobble on windGain: l4 sine .09 gain .06 → windGain.gain. base .12 fine.\n this.birdLoop();\n },\n setWind(v){ if(!this.ctx)return; const t=this.ctx.currentTime;\n this.windGain.gain.setTargetAtTime(0.05+v*0.22,t,0.4);\n this.rustleGain.gain.setTargetAtTime(0.008+v*0.10,t,0.25);\n this.windFilter.frequency.setTargetAtTime(240+v*560,t,0.6);\n },\n setNight(n){ if(!this.ctx)return; this.cricketGain.gain.setTargetAtTime(n*0.035,this.ctx.currentTime,1.2); },\n birdLoop(){ const C=this.ctx; if(C){ if(this.on && dayFactor>0.4){ this.chirp(); } } setTimeout(()=>this.birdLoop(), 2600+Math.random()*6500); },\n chirp(){ const C=this.ctx,t=C.currentTime; const o=C.createOscillator(),g=C.createGain(); o.type='sine';\n const f0=2300+Math.random()*1300, n=2+Math.floor(Math.random()*3);\n g.gain.value=0;\n for(let i=0;i use g.rotateX/Y/Z: \n g.rotateX(e.x); g.rotateY(e.y); g.rotateZ(e.z);\n g.translate(center.x+(Math.random()-0.5)*0.4, center.y+(Math.random()-0.5)*0.4, center.z+(Math.random()-0.5)*0.4);\n const cnt=g.attributes.position.count;\n const ad=new Float32Array(cnt*2), at=new Float32Array(cnt);\n for(let v=0;v=MAXD||rad<0.03){ addCluster(tip, 1.1+depth*0.16+Math.random()*0.35); if(Math.random()<0.5) addCluster(tip.clone().add(new THREE.Vector3((Math.random()-0.5), (Math.random()-0.2), (Math.random()-0.5)).multiplyScalar(0.8)), 1.0+depth*0.14); return; }\n const nKids = depth===0?3: (Math.random()<0.6?2:3);\n for(let i=0;i=2&&Math.random()<0.55){ const mp=pos.clone().addScaledVector(dir,len*(0.6+Math.random()*0.3)); addCluster(mp,1.05+depth*0.15+Math.random()*0.3); }\n}\ngrow(new THREE.Vector3(0,0,0), new THREE.Vector3(0.06,1,0.02).normalize(), 3.0, 0.34, 0);\nconst barkGeo=THREE.BufferGeometryUtils.mergeBufferGeometries(barkGeos);\nconst leafGeo=THREE.BufferGeometryUtils.mergeBufferGeometries(leafGeos);\n```\n\nmergeBufferGeometries requires consistent index presence: all indexed (cylinder & plane indexed) good.\n\nleafGeo.computeVertexNormals? Planes already have normals rotated properly. ok.\n\nGround, rocks:\n```js\nconst groundMat=new THREE.MeshStandardMaterial({map:grassTex,roughness:1,metalness:0});\nconst ground=new THREE.Mesh(new THREE.PlaneGeometry(320,320),groundMat);\nground.rotation.x=-Math.PI/2; ground.receiveShadow=true;\n```\ngrassTex.repeat set at creation (48).\n\nAO blob:\n```js\nconst blobTex=canvasTex(128,(x,s)=>{const g=x.createRadialGradient(s/2,s/2,4,s/2,s/2,s/2);g.addColorStop(0,'rgba(0,0,0,0.5)');g.addColorStop(0.7,'rgba(0,0,0,0.18)');g.addColorStop(1,'rgba(0,0,0,0)');x.fillStyle=g;x.fillRect(0,0,s,s);});\nconst blob=new THREE.Mesh(new THREE.PlaneGeometry(10,10),new THREE.MeshBasicMaterial({map:blobTex,transparent:true,depthWrite:false}));\nblob.rotation.x=-Math.PI/2; blob.position.y=0.02;\n```\nsRGB encoding on blob darkens alpha? encoding affects RGB not alpha; black stays black fine.\n\nRocks:\n```js\nconst rockMat=new THREE.MeshStandardMaterial({color:0x8d9094,roughness:0.95,flatShading:true});\nfor(let i=0;i<5;i++){ const r=new THREE.Mesh(new THREE.DodecahedronGeometry(0.25+Math.random()*0.35,0),rockMat); const a=Math.random()*Math.PI*2, d=2.6+Math.random()*5; r.position.set(Math.cos(a)*d,0.12,Math.sin(a)*d); r.rotation.set(Math.random()*3,Math.random()*3,Math.random()*3); r.scale.y=0.7; r.castShadow=r.receiveShadow=true; scene.add(r);}\n```\n\nSky & stars as planned.\n\nFalling leaves points:\n```js\nconst N=140; const pos=new Float32Array(N*3), rnd=new Float32Array(N);\nfor(i){ const a=Math.random()*Math.PI*2, d=0.6+Math.pow(Math.random(),0.7)*3.8; pos[i*3]=Math.cos(a)*d; pos[i*3+1]=0; pos[i*3+2]=Math.sin(a)*d; rnd[i]=Math.random(); }\ngeo set attrs; PointsMaterial→ShaderMaterial:\nconst fallMat=new THREE.ShaderMaterial({uniforms:{uTime:windUniforms.uTime,uWind:windUniforms.uWind,uTex:{value:singleLeafTex},uColor:{value:new THREE.Color(0x6fae45)}},vertexShader:...,fragmentShader:...,transparent:true,depthWrite:false});\nconst fall=new THREE.Points(fallGeo,fallMat); fall.frustumCulled=false;\n```\nSharing uniform objects windUniforms.uTime across materials — same object reference → updates propagate. \n\nupdateSun function with constants:\n\n```js\nconst C_DAY_TOP=new THREE.Color(0x2e6fd3), C_DAY_BOT=new THREE.Color(0xbfe0f2), C_DAY_SUN=new THREE.Color(0xfff3d4);\nconst C_DUSK_TOP=new THREE.Color(0x3a3f78), C_DUSK_BOT=new THREE.Color(0xff9e5e), C_DUSK_SUN=new THREE.Color(0xffc07a);\nconst C_NIGHT_TOP=new THREE.Color(0x04060f), C_NIGHT_BOT=new THREE.Color(0x0d1830), C_NIGHT_SUN=new THREE.Color(0xb9c8ff);\nlet dayFactor=1;\nfunction updateSun(t){ ... compute weights, colors via mixWeights(a,b,c) helper writing into target colors ...\n skyUni.uTop.value.copy(top) etc.\n scene.fog.color.copy(bot).lerp(new THREE.Color(0x000000),0)? just bot.\n renderer.setClearColor? sky sphere covers everything; not needed.\n const ldir = sunH>0.02?dir:dir.clone().negate();\n sun.position.copy(ldir).multiplyScalar(45); sun.position.y=Math.max(sun.position.y,4)? moon dir y = -sunH positive at night fine.\n sun.intensity=0.18*nightW+0.8*duskW+1.35*dayW;\n sun.color.copy(mixWeights(...));\n hemi.intensity=0.16+0.5*dayW+0.12*duskW; hemi.color.copy(top).lerp(new THREE.Color(0xffffff),0.3);\n skyUni.uSunDir.value.copy(ldir); skyUni.uSunColor.copy(discCol); skyUni.uSunI.value=dayW*1.0+duskW*0.9+nightW*0.45;\n starMat.opacity=nightW*0.9;\n dayFactor=dayW;\n AudioSys.setNight(nightW);\n}\n```\nmix helper:\n```js\nfunction mixW(n,d,da,out){ out.setRGB( n.r*nightW+... ) } — write generic:\nfunction mixW(cn,cd,cy,wn,wd,wy){ return new THREE.Color(\n cn.r*wn+cd.r*wd+cy.r*wy, cn.g*wn+cd.g*wd+cy.g*wy, cn.b*wn+cd.b*wd+cy.b*wy);}\n```\nAllocations per slider change only — fine.\n\ndirLight shadow needs target update: sun.target.position.set(0,0,0) default at origin, added to scene once.\n\ndisc color: mixW(nightSun,duskSun,daySun...).\n\nFog near/far constant.\n\nStars material var starMat.\n\nSlider events: sunSlider.addEventListener('input',e=>updateSun(parseFloat(e.target.value))).\n\nWind slider: windUniforms.uWind.value=v; AudioSys.setWind(v).\n\nPalette buttons: querySelectorAll('.pal') data-p.\n\nSound button as designed.\n\nEverything in an init, call animate().\n\nAlso add double-check: MeshDepthMaterial map requires uv attribute — leafGeo has uv yes.\n\nAlphaTest on depth: MeshDepthMaterial({alphaTest:0.42, map}) works in r128 (alphaTest uniform + ALPHATEST define via material.alphaTest>0). Yes.\n\nleafMat.shadowSide? For DoubleSide cast, set leafMesh.material.side DoubleSide and shadowSide default (null → uses material side?) In r128 shadowSide default null meaning use material.side? Actually Material.shadowSide: \"which face casts shadow, default null → front? \" In r128 default shadowSide null → shadow rendering uses material.side? The WebGLShadowMap uses material.shadowSide or falls back to side-based culling: if shadowSide null, uses front/back based on side. Fine.\n\nSet leafMesh.receiveShadow=true may cause acne from own quad shadows — with alphaTest depth and normalBias 0.6? Let me set sun.shadow.normalBias=0.4 (r128 supports normalBias). bias -0.0002. radius 2 for PCFSoft radius ignored? PCFSoft uses radius? PCFSoftShadowMap ignores radius. fine.\n\nBark receive true.\n\nOne more aesthetic: add subtle god-ray? no.\n\nGrass under canopy darker? blob covers.\n\nAlright, also small touch: make trunk flare at base: add a cone (cylinder r bottom 0.55 top 0.34 h 0.8) as root flare in barkGeos before recursion:\n```js\nconst flare=new THREE.CylinderGeometry(0.34,0.55,0.9,9,2); flare.translate(0,0.45,0); barkGeos.push(flare);\n```\nThen trunk from y0 up overlaps fine. Root bumps: few small cones around base? add 4 roots: cylinder r 0.12→0.05 len 0.7 angled outward down — keep simple: skip, flare ok. Actually roots add charm: 5 small tapered cylinders leaning outward at base:\n```js\nfor(i<5){ const a=i/5*2π+rand; const g=new THREE.CylinderGeometry(0.05,0.13,0.9,6,1); g.translate(0,0.45,0); tilt outward: rotateZ? orient along dir (cos a*0.8, 1, sin a*0.8)*... use quaternion from UP to dir normalize( cos*0.9,1.0,sin*0.9 ); position at base offset small; push }\n```\nNice, include.\n\nI think we're set. Write final file with comments and concise intro text. Length is fine.\n\nAlso note: googleapis fonts link — external lib allowed since included in code.\n\nDouble-check OrbitControls path for 0.128.0 jsDelivr: examples/js/controls/OrbitControls.js — exists (non-module build). Yes r128 still had js builds. BufferGeometryUtils at examples/js/utils/BufferGeometryUtils.js — exists r128.\n\nCore from cdnjs r128. Both same version 0.128 — OrbitControls expects global THREE from same version; ok.\n\nEdge: `THREE.sRGBEncoding` exists r128. `outputEncoding` yes.\n\nWrite it.\n\nAlso handle context: hint text \"Headphones recommended 🎧\".\n\nFinal answer: short intro + one HTML code block.","reasoning_details":[{"type":"reasoning.text","text":"The user wants a 3D tree with:\n- Generated textures\n- Colors\n- Sounds\n- Winds\n- Shader with light\n- Clean tree with branches and leaves\n\nI'll create a complete HTML file using Three.js that includes:\n1. A procedurally generated 3D tree (trunk, branches, leaves)\n2. Procedurally generated textures (bark texture, leaf texture using canvas)\n3. Nice colors\n4. Wind animation (vertex shader displacement for leaves, branch swaying)\n5. Sound generation (wind/ambient sounds using Web Audio API)\n6. Custom shaders with lighting\n7. Clean scene setup\n\nLet me build this carefully:\n\n1. **Tree generation**: Recursive branch generation - trunk splits into branches, each branch has leaves at the ends.\n\n2. **Textures**: \n - Bark texture: generated with canvas - noise-based vertical streaks\n - Leaf texture: canvas-generated with a leaf shape/gradient\n - Ground texture maybe\n\n3. **Wind**: \n - Custom shader material for leaves with vertex displacement based on time and position\n - Branch sway via rotation animation\n\n4. **Sound**: Web Audio API - generate wind noise using filtered noise (brown/pink noise with LFO on filter frequency), maybe subtle rustling\n\n5. **Lighting shader**: Custom shader for leaves with lambert-ish lighting + subsurface scattering look, or use MeshStandardMaterial with onBeforeCompile to add wind. Actually a custom ShaderMaterial gives more control. Let me use custom ShaderMaterial with:\n - Vertex shader: wind displacement\n - Fragment shader: leaf texture + diffuse lighting + ambient + rim light\n\n6. **UI**: Buttons to toggle sound, sliders for wind strength, maybe time of day.\n\nLet me write the code:\n\n```html\n\n\n\n...\n\n\n\n...\n\n\n```\n\nKey components:\n\n**Bark texture generation:**\n```js\nfunction createBarkTexture() {\n const canvas = document.createElement('canvas');\n canvas.width = 256; canvas.height = 512;\n const ctx = canvas.getContext('2d');\n // base color\n ctx.fillStyle = '#5a4230';\n ctx.fillRect(0,0,256,512);\n // vertical streaks with noise\n for (let i = 0; i < 3000; i++) {\n const x = Math.random()*256;\n const y = Math.random()*512;\n const h = 10 + Math.random()*40;\n const shade = Math.random();\n ctx.fillStyle = shade > 0.5 ? `rgba(70,50,35,${Math.random()*0.5})` : `rgba(95,75,55,${Math.random()*0.5})`;\n ctx.fillRect(x, y, 1+Math.random()*3, h);\n }\n // cracks\n ...\n const tex = new THREE.CanvasTexture(canvas);\n tex.wrapS = tex.wrapT = THREE.RepeatWrapping;\n return tex;\n}\n```\n\n**Leaf texture:**\n```js\nfunction createLeafTexture() {\n const canvas = document.createElement('canvas');\n canvas.width = canvas.height = 128;\n const ctx = canvas.getContext('2d');\n // draw a leaf shape with gradient and vein\n ...\n}\n```\n\nActually for leaves, I could make clusters - quads with leaf texture, or actual leaf-shaped geometry. A common approach: use PlaneGeometry with alpha-tested leaf texture, or use custom geometry. For a \"clean\" look, I'll generate leaf clusters made of several crossed planes with a leaf sprite texture (a cluster of small leaves drawn on canvas).\n\nBetter: draw a cluster of leaves on canvas — many small ellipses in green shades with veins. Alpha test in shader.\n\n**Tree generation (recursive):**\n```js\nfunction generateBranch(depth, length, radius) {\n // cylinder geometry, positioned along +Y, pivot at bottom\n // add children branches rotated\n}\n```\n\nI'll build branches as cylinders merged or as group hierarchy. For wind sway on branches, I can apply a shader-based sway too, or animate via hierarchy. Simpler and cleaner: use a custom shader for bark too with subtle sway based on height. Actually simplest robust approach: put whole tree in a group, sway trunk slightly by rotating group; leaves get shader wind. Also branch-level sway can be faked by vertex displacement in bark shader proportional to y position.\n\nLet me write a bark ShaderMaterial too with wind displacement + lighting + texture. That keeps consistency.\n\nActually, to keep it manageable and \"clean\", I'll use:\n- Bark: MeshStandardMaterial with generated texture + onBeforeCompile injecting wind sway (height-based).\n- Leaves: custom ShaderMaterial with full control: wind flutter, lighting (diffuse + ambient + specular + translucency), alpha test, fog.\n\nHmm, mixing might complicate. Alternatively use onBeforeCompile for both — that gives shadows, fog, etc. for free. But the user asked for \"shader with light\" — a custom ShaderMaterial with lighting demonstrates that better. Let me do a full custom ShaderMaterial for leaves with nice lighting, and for bark use custom ShaderMaterial as well with the generated texture, lambert + specular. I can implement fog manually or skip fog... Fog adds depth. I can include THREE fog chunks manually. Simpler: skip scene fog, use a nice gradient background sky via shader on a big sphere or just renderer clear color + CSS gradient. I'll make a sky using a large sphere with gradient shader — that also counts as \"shader with light\" (sun glow).\n\nLet me include:\n- Sky shader (gradient + sun glow)\n- Ground (generated grass texture, receiveShadow)\n- Shadows: with custom ShaderMaterial, receiving shadows is complex. I could use THREE's shadow via including shadowmap chunks — complicated. Alternative: use MeshStandardMaterial with onBeforeCompile for wind — gets shadows + lighting for free, and it IS a shader with light (standard PBR lighting). Plus I can add a custom leaf ShaderMaterial... \n\nDecision: Use MeshStandardMaterial + onBeforeCompile for bark and leaves. This gives:\n- Real PBR lighting with directional sun light + hemisphere light\n- Shadows (cast + receive)\n- Wind vertex displacement injected\n- Clean and robust\n\nPlus a custom sky gradient shader and maybe custom grass. This satisfies \"shader with light\" since the standard material has lighting and we modify its shader. I can also add a subtle custom \"glow\" or use ACES tone mapping for beauty.\n\nHmm, but to really show off a \"shader\", let me make the leaves a true ShaderMaterial with lambert lighting computed manually... Shadows would be lost. Trade-off. I think visual quality wins: MeshStandardMaterial + onBeforeCompile wind injection, with shadows. I'll write the lighting through Three's standard pipeline (which is shader lighting).\n\nActually — I can do both: leaves as ShaderMaterial WITH shadow support by including the shadowmap chunks. That's advanced but doable:\n\n```glsl\n#include \n#include \n#include \n...\n```\n\nAnd in vertex: `#include ` requires worldPosition etc. It's finicky but I've seen it work. Risk of bugs. Given \"clean tree\" requirement, I'll go with MeshStandardMaterial + onBeforeCompile. It's reliable, beautiful, has lights and shadows.\n\n**Wind system:**\n- Global `windUniforms = { uTime: {value:0}, uWindStrength: {value:1}, uWindDir... }`\n- Bark sway: displacement in vertex shader: `pos.x += sin(uTime*1.2 + pos.y*0.5) * pow(max(pos.y,0.0)/maxHeight, 2.0) * uWindStrength * 0.15;`\n- Leaf flutter: per-leaf random phase. Since leaves will be merged geometry for performance, add an attribute `aPhase` and `aFlex` (flexibility). Displacement: sway + flutter (normal-based jitter).\n- Leaf clusters as instanced or merged geometry. Merging with BufferGeometryUtils... I'm loading three from CDN r128 — BufferGeometryUtils available via examples js? For r128, there's `https://cdn.jsdelivr.net/npm/three@0.128.0/examples/js/utils/BufferGeometryUtils.js`. Or I can merge manually by creating the leaf quads transformed and merging attributes myself. Simpler: use THREE.InstancedMesh? Wind per-instance phase via instanceMatrix position hash — can derive phase from world position in shader, no extra attribute needed. InstancedMesh with onBeforeCompile works. But leaves orientation per instance set via matrix. That's clean.\n\nActually merging manually isn't hard: create plane, apply matrix, push attributes. But r128 has Geometry/BufferGeometry — merge via BufferGeometryUtils from CDN examples. Let me use the jsDelivr examples URL for r128 to be safe:\n\n`https://cdn.jsdelivr.net/npm/three@0.128.0/examples/js/utils/BufferGeometryUtils.js` — this attaches `THREE.BufferGeometryUtils`. Good.\n\nOr use OrbitControls from same: `https://cdn.jsdelivr.net/npm/three@0.128.0/examples/js/controls/OrbitControls.js`.\n\nLet me use three r128 from cdnjs (core) and examples from jsDelivr — version match 0.128.0. Good.\n\n**Leaves rendering:** clusters: each leaf = 2-3 crossed planes? For a fluffy canopy look, I'll place leaf cluster sprites (quads with cluster texture) at branch tips, random rotation, maybe 2 quads crossed per cluster. Alpha test 0.5 in material (alphaTest). DoubleSide.\n\nWind for leaves in vertex shader:\n```glsl\nvec3 wp = position; // local\nfloat phase = position.x * 2.0 + position.z * 1.7; // variance\n// Actually better per-cluster phase: use a custom attribute\n```\nI'll add attribute `aData` (x: phase, y: flex). When building merged geometry, fill per-vertex.\n\nVertex displacement:\n```glsl\nfloat sway = sin(uTime * 1.4 + phase) * 0.5 + sin(uTime * 2.3 + phase * 1.3) * 0.3;\nfloat gust = uWindStrength * (0.6 + 0.4 * sin(uTime * 0.4 + phase * 0.2));\ntransformed += windDir * sway * gust * flex * 0.35;\ntransformed += normal * sin(uTime * 5.0 + phase * 7.0) * 0.03 * uWindStrength * flex;\n```\n\nFor bark, flex based on height^2.\n\n**Sound (Web Audio):**\n- Wind: buffer of white noise -> lowpass filter with LFO on frequency + gain LFO -> stereo panners. Two layers for depth.\n- Leaves rustle: bandpass-filtered noise at higher freq, gain modulated by wind strength, only when audio on.\n- Maybe subtle birds? Random chirps with oscillators — nice touch! Random bird chirps: oscillator freq sweeps. Add toggle.\n- Audio starts on user gesture (button \"Enable Sound\"). Show a mute button.\n\nWind strength slider also affects sound volume/filter — nice integration.\n\n**UI:**\n- Title overlay\n- Controls: wind slider, sound toggle, maybe season color presets (green / autumn / cherry?) — \"colors\" requested. Add color palette buttons: Summer Green, Autumn, Cherry Blossom, Mystic Blue. Changes leaf material color tint + maybe fog/light tint. \n- Time of day slider? Could be nice: changes sun position/color, sky colors. That's impressive but adds complexity to sky shader — doable: sky shader takes uSunDir and colors computed. Let me implement day cycle slider: sun elevation -> sky gradient colors mix (day/sunset/night), light intensity/color, stars at night? Stars could be points... maybe skip stars, keep it clean-ish. I'll do sun slider affecting: sun light position/color/intensity, sky shader uniforms, hemisphere light. Nice.\n\nKeep UI minimal and pretty: glassmorphism panel top-left.\n\n**Ground:** circle geometry with generated grass texture (canvas noise greens) + subtle color variation. Receive shadow. Maybe a few flowers/rocks? Keep clean — just grass + soft radial darkening.\n\n**Petals/particles falling?** Could add falling leaves particles when wind strong — nice touch but optional. Maybe skip to keep code size manageable... Actually a few falling leaf sprites using Points with custom shader would be lovely and \"wind\" visible. Hmm, code length is already big. I'll add simple falling leaves points system — it strongly sells \"wind\". Let me include a compact version: 150 points, spawn in canopy radius, fall with sway, respawn. Color matches palette.\n\n**Sky:** big sphere, ShaderMaterial gradient: top color, bottom color, sun glow around sun dir, uniforms updated by time-of-day.\n\n**Lighting:**\n- DirectionalLight (sun) with shadows, 2048 map.\n- HemisphereLight sky/ground.\n- Tone mapping ACESFilmic, exposure ~1.1.\n- renderer.outputEncoding sRGB.\n\n**Tree generation details:**\nRecursive:\n```js\nconst treeGroup = new THREE.Group();\nconst branches = []; // {matrix stuff}\nfunction grow(position, direction, length, radius, depth) {\n const seg = new THREE.CylinderGeometry(radius*0.7, radius, length, 7, 1);\n seg.translate(0, length/2, 0);\n // orient: quaternion from up to direction\n ...\n merge into bark geometry with aFlex attribute based on depth\n if depth === 0 -> spawn leaf clusters at tip + along\n else spawn 2-3 children\n}\n```\nMerge all bark cylinders into one BufferGeometry with per-vertex `aFlex` = (worldY/maxY)^2. For bark I'll compute flex in shader from world position instead — easier: in shader use transformed world y. Since tree is static geometry merged, position.y works. Trunk bottom y=0 flex=0, top flex=1. Good, no attribute needed for bark.\n\nBut individual branch sway would be nicer with per-branch pivot... merged whole-tree sway (bend from base) looks natural for wind. Fine.\n\nLeaf clusters: at each terminal branch tip, add 1-3 cluster quads (size 1.2-2.2). Also add some along outer branches for fullness. Each cluster quad: PlaneGeometry(1,1), rotate random, translate to tip + slight offset. Record per-vertex aData: phase = random*2PI per cluster, flex = 1 (or random 0.7-1). Also store aColor variation? Could tint per-cluster hue slightly via attribute — nice for richness. I'll add attribute aTint (float) mixing two leaf colors in shader... but using MeshStandardMaterial color is uniform-wide. With onBeforeCompile I can inject attribute tint into diffuse. Doable: add `attribute float aTint; varying float vTint;` then `diffuseColor.rgb *= mix(vec3(1.0), tintColor, vTint)`. I'll inject into fragment. Let's do it: tint variations of green/yellow.\n\nLeaf texture on canvas: draw ~40 small leaf shapes (ellipses rotated) in varying greens with darker vein lines, within circle radius, transparent bg. alphaTest handles clipping. Also generate an autumn version? Changing palette can just re-tint via material color multiply; texture is grayscale-ish green? If texture is green and palette tints multiply, autumn = multiply by orange — green*orange = muddy. Better: make leaf texture mostly luminance/white-ish with alpha, and let material color drive hue. I'll draw leaves with white-to-light-gray gradients + subtle vein shading, then material.color sets hue (green/orange/pink). Tint attribute adds secondary variation. \n\nLeaf alpha texture: shape = ellipse cluster; shading light gray highlights. Good.\n\nRoughness ~0.8, and to get translucency feel, add emissive slight? Standard material: use `emissive` small same color * 0.15 to fake light-through. Or custom. Keep small emissive via onBeforeCompile? Material emissive property exists — set material.emissive = color.clone().multiplyScalar(0.12). When palette changes update both.\n\n**Shadows:** leaves castShadow with alphaTest — standard material handles alpha in shadow depth? Shadow depth material doesn't respect alphaTest unless customDepthMaterial. Leaves casting blob shadows: acceptable to let full quad cast? That'd make square shadows — ugly. Use customDepthMaterial = new THREE.MeshDistanceMaterial? For directional shadow it's MeshDepthMaterial with alphaTest and map: \n```js\nleafMesh.customDepthMaterial = new THREE.MeshDepthMaterial({depthPacking: THREE.RGBADepthPacking, map: leafTex, alphaTest: 0.5});\n```\nBut our vertex wind displacement won't apply to depth material — shadow won't sway, subtle, acceptable. Actually wind in depth: we can also onBeforeCompile the depth material same way... keep simple: accept static-ish shadow or small. Hmm wind sway amplitude ~0.3 — shadow mismatch noticeable but minor; most viewers won't mind. I could inject the same vertex code into the depth material — easy since it's same chunk replacement. Let me do it: apply wind patch function to both material and customDepthMaterial. \n\n**Birds sound:** simple chirp generator: setInterval-ish random, osc sine freq envelope 2000->3000 quick blips x3. Keep subtle, toggle with sound.\n\nNow the code structure. Also handle resize, animate loop, controls damping.\n\nPalette presets:\n- Summer: leaf #4a9b3f tint secondary #8fce5a, sky day\n- Autumn: #e07b2a / #f4c542\n- Blossom: #f2a7c3 / #ffffff\n- Mystic: #58c1c9? maybe #7de0d3 with purple-ish light\n\nFalling leaves color follows palette.\n\nTime of day slider 0..1 mapped: sunrise(0.15)->noon(0.5)->sunset(0.8)->night edges. Simplify: slider \"sun angle\" 0..1 -> elevation = sin(pi*t)*... Let me map t in [0,1] to sun angle theta from 0..PI (horizon to horizon), azimuth fixed-ish. Sun elevation sin. Colors: day when elevation high; sunset near horizon; night when below small threshold clamp. Compute colors by mixing keyframes. Keep 3 keyframes: night, sunset, day. \n\nskyColor sets: \n- day: top #3a7bd5 bottom #aad4f5, sun white-ish\n- sunset: top #2b2e5f bottom #ff9a5a\n- night: top #0a0e2a bottom #14264a\nMix by elevation. Directional light color/intensity similarly, hemisphere too. Implement with THREE.Color lerp.\n\nSun mesh? Sky shader draws sun disc glow at uSunDir. Also add a lens-ish glow. Good.\n\nStars: add Points with random positions on sphere, visible at night via opacity uniform. Compact to add — include, it's pretty. Hmm... code size. I'll include ~400 star points, material opacity tied to night factor. Small addition, big effect.\n\n**Grass texture canvas:** base green, thousands of tiny strokes/variations, some darker patches. Repeat 8x. Also slight vertical gradient via lighting anyway.\n\nAdd subtle flowers? skip.\n\n**Sound engine details:**\n```js\nclass WindAudio {\n constructor(){ ctx=null }\n start(){ create ctx; noise buffer 2s white; \n // Layer 1 wind: source->lowpass(400)->gainWind->master, LFO(0.1Hz)->filter.freq, LFO2->gain\n // Layer 2 leaves: source2->bandpass(2500,Q1)->gainLeaves->master, modulate by windStrength param\n // master gain 0.0 -> ramp to set\n }\n setWind(v){ targets for gains/filter }\n toggle()\n}\n```\nBird chirps: function chirp(){ if(!ctx||muted) return; osc + gain env; schedule next via setTimeout random 3-9s }\n\nAutoplay policy: start on button click. Button: \"🔊 Sound: Off/On\".\n\nWind slider also calls windAudio.setWind.\n\nNow writing all code carefully. Length will be large (~700+ lines) but that's fine.\n\nLet me write vertex wind injection helper:\n\n```js\nfunction addWind(material, opts){\n material.onBeforeCompile = (shader)=>{\n shader.uniforms.uTime = windUniforms.uTime;\n shader.uniforms.uWind = windUniforms.uWind;\n shader.uniforms.uGust = windUniforms.uGust;\n shader.vertexShader = `\n uniform float uTime;\n uniform float uWind;\n uniform float uGust;\n ${opts.leaves ? 'attribute vec2 aData; attribute float aTint; varying float vTint;' : ''}\n ` + shader.vertexShader;\n shader.vertexShader = shader.vertexShader.replace('#include ', `\n #include \n ${opts.leaves ? leafWindCode : barkWindCode}\n `);\n if(opts.leaves){\n shader.fragmentShader = 'varying float vTint;\\n' + shader.fragmentShader;\n shader.fragmentShader = shader.fragmentShader.replace('#include ', `\n #include \n diffuseColor.rgb = mix(diffuseColor.rgb, diffuseColor.rgb * vec3(1.25,1.15,0.55), vTint);\n `);\n // hmm tint toward yellowish\n }\n material.userData.shader = shader;\n };\n}\n```\n\nWait — tint toward yellow via multiplying by (1.25,1.15,0.55) pushes yellow. vTint in 0..~0.6 random. OK.\n\nBark wind code:\n```glsl\nfloat hNorm = clamp(transformed.y / uTreeHeight, 0.0, 1.0);\nfloat bendAmt = hNorm * hNorm;\nfloat wob = sin(uTime * 1.3 + transformed.y * 0.35) + 0.5 * sin(uTime * 2.7 + transformed.x * 0.5 + transformed.y*0.2);\nvec2 windVec = vec2(0.83, 0.55); // normalized wind dir xz\ntransformed.x += windVec.x * wob * bendAmt * uWind * uGust * 0.35;\ntransformed.z += windVec.y * wob * bendAmt * uWind * uGust * 0.35;\n```\nuTreeHeight uniform constant ~ e.g., 9.\n\nLeaf wind code:\n```glsl\nvTint = aTint;\nfloat phase = aData.x;\nfloat flex = aData.y;\nfloat t = uTime;\nfloat gust = uGust * (0.7 + 0.3 * sin(t*0.35 + phase*0.15));\nfloat sway = sin(t*1.5 + phase)*0.6 + sin(t*2.9 + phase*1.7)*0.4;\nvec2 windVec = vec2(0.83,0.55);\ntransformed.x += windVec.x * sway * gust * uWind * flex * 0.45;\ntransformed.z += windVec.y * sway * gust * uWind * flex * 0.45;\ntransformed.y += sin(t*1.1 + phase)*0.08*uWind*gust*flex;\n// flutter along normal\nfloat fl = sin(t*6.0 + phase*9.0 + transformed.x*3.0)*0.05*uWind*flex;\ntransformed += normalize(vec3(0.0,1.0,0.0)+vec3(0.0001)) * fl; // use objectNormal\n```\nBetter use objectNormal: `transformed += objectNormal * fl;` — in begin_vertex, objectNormal exists (defined in beginnormal_vertex which comes before begin_vertex in standard material? Order in meshphysical vertex shader: `#include ` ... then ``. Yes objectNormal defined before. Good.\n\nGust uniform: computed on CPU each frame: gust = 0.6+0.4*noise-ish (sin combos). Fine.\n\nNow the depth material patch: customDepthMaterial = MeshDepthMaterial({depthPacking, map, alphaTest}); apply addWind with same leaf code. MeshDepthMaterial vertex shader includes begin_vertex too. It lacks objectNormal (no beginnormal in depth material!). Depth material vertex shader: includes `` etc but not beginnormal_vertex? Let me recall depth vertex template: it has `#include ` and `#include `, plus skinning/morph. objectNormal NOT defined. So in leaf code for depth, avoid objectNormal: use flutter along fixed up vector instead. I'll parametrize: pass opts.simple to skip normal flutter, or define flutter along (0,1,0). Simpler: in leaf wind code use `vec3 nrm = vec3(0.0,1.0,0.0);`? But then main material loses normal flutter — acceptable! Use up-vector flutter for both, keep code identical for material & depth. Actually nicer: flutter radially from cluster center... we don't have center. Up-vector flutter fine.\n\nAlso aTint attribute doesn't exist on depth — guard with opts.\n\nMerging geometry: BufferGeometryUtils.mergeBufferGeometries needs same attributes. Plane geometry has position/normal/uv. I add aData + aTint to each before merge. For bark cylinders: position/normal/uv only — merge separately. Good.\n\nBuilding tree:\n\n```js\nfunction buildTree(){\n const barkGeos=[], leafGeos=[];\n const tmpObj... \n function branch(pos, dir, len, rad, depth){\n const g = new THREE.CylinderGeometry(rad*0.62, rad, len, 8, 3);\n g.translate(0, len/2, 0);\n const q = new THREE.Quaternion().setFromUnitVectors(new THREE.Vector3(0,1,0), dir.clone().normalize());\n const m = new THREE.Matrix4().compose(pos, q, new THREE.Vector3(1,1,1));\n g.applyMatrix4(m);\n barkGeos.push(g);\n const tip = pos.clone().add(dir.clone().multiplyScalar(len));\n if(depth >= maxDepth || rad < 0.02){\n // leaf clusters: 2-3\n addLeafCluster(tip, ...); \n return;\n }\n const n = depth===0? 4 : (2 + (rand<0.5?1:0));\n for(i...){\n const angle = (i/n)*PI*2 + rand;\n const spread = 0.5+rand*0.5; // radians from parent dir\n // build child dir: rotate parent dir by spread around perpendicular axis\n const axis = new THREE.Vector3(rand-0.5, rand-0.5, rand-0.5).cross(dir).normalize();\n const nd = dir.clone().applyAxisAngle(axis, spread*(0.6+Math.random()*0.6));\n // add upward bias\n nd.lerp(new THREE.Vector3(0,1,0), 0.15+depth*0.05).normalize();\n const startPos = pos.clone().add(dir.clone().multiplyScalar(len*(0.55+Math.random()*0.45)));\n branch(startPos, nd, len*(0.62+rand*0.2), rad*0.6, depth+1);\n }\n // sometimes a leaf cluster mid-branch for fullness at outer depths\n if(depth>=2 && Math.random()<0.5) addLeafCluster(point along, ...)\n }\n branch(new THREE.Vector3(0,0,0), new THREE.Vector3(0,1,0), 3.2, 0.35, 0);\n}\n```\n\nAdd slight trunk curve? Keep straight-ish; children give shape. Maybe give trunk slight lean and taper handled by radius ratios.\n\nLeaf cluster: \n```js\nfunction addLeafCluster(center, size){\n const planes = 2; // crossed\n const phase = Math.random()*Math.PI*2;\n const tint = Math.random()*0.7;\n for(let i=0;i terminal count maybe 150-250 clusters *2 quads = manageable (~500 quads = 1000 tris? plane=2 tris each; trivial). Cylinders segments 8 radial, 3 height — fine.\n\nMake canopy balanced: spread wider at top (spreading crown): upward bias small, spread big. Tune: depth0 children spread 0.7-1.0 rad, upward bias 0.25. Should look like a decent broadleaf tree. Also shorten children: len*0.68.\n\nLeaf size: 1.3-2.0 depending on depth (deeper = larger clusters to fill). size = 1.1 + depth*0.15.\n\nGround: CircleGeometry radius 30, rotated flat, grass texture repeat. Also scatter a few low-poly rocks? skip. Maybe a soft radial gradient darkening ring via second canvas texture — incorporate into grass canvas edges? The circle UVs — radial gradient needs radial UV mapping; simpler: big ground plane (100x100) with repeat texture; fog handles distance. Use fog! THREE.Fog matching sky bottom color, updates with time of day. Standard materials get fog free. \n\nFog color uniform updated with palette/time. scene.fog = new THREE.Fog(color, 25, 90).\n\nSky sphere radius 200, BackSide, fog:false in shader material. Stars at radius 180.\n\nFalling leaves: THREE.Points, 120, custom ShaderMaterial:\n- attributes: position (spawn in canopy ellipsoid), aRand\n- uniforms: uTime, uWind, uColor, uPixelRatio\n- vertex: y = mod(startY - t*speed, range); x += sin sway + wind push; size ~ 10-18 px; rotate? points can't rotate sprite texture w/o shader trick — pass rotation angle, rotate UV in fragment. Leaf sprite small texture reuse leafTexture? Draw a tiny single-leaf canvas texture. Rotate uv by angle in fragment. \n- fade near ground (y<0.2 -> alpha 0, respawn logic inherent via mod).\nSimple enough. Let me write it.\n\nSpawn logic: each particle has seed; y = H - mod(t*speed + seed*H, H) where H=8; x = baseX + sway + wind drift proportional to fall progress... Using mod, drift resets — fine visually if modest.\n\nPosition attribute = base spawn pos in disc radius 4 around trunk at heights 3..8. In shader compute animated pos. Alpha fade in bottom 0.5 and top spawn 0.3.\n\nOnly spawn count scaled by wind: discard points when aRand > uWindNorm? Vary alpha = step. Nice: more wind => more falling leaves.\n\nSound: \n```js\nlet audioCtx, masterGain, windGain, leafGain, windFilter, rustleFilter, started=false, muted=false;\nfunction initAudio(){ ... }\n```\nWhite noise buffer 2 sec, looped.\n\nWind layer: noise -> lowpass(300) -> gain(0.5). LFO osc 0.07Hz -> gain node(150) -> connect filter.frequency. Another LFO 0.11Hz on windGain.gain ±0.15.\nRustle: noise -> bandpass(3200, Q 0.8) -> gain 0.05. LFO 0.5Hz + wind factor.\nMaster gain 0.9 -> destination. Maybe a convolver? skip.\n\nsetWindLevel(v): windGain.gain.target = 0.15+v*0.5; rustle 0.02+v*0.18; filter freq target 250+v*400.\n\nBirds: chirp(): osc sine, freq.setValueCurve quick warbles: use linearRamp sequences: f 2400->3100->2600 over 0.15s repeated 2-3 times; gain env 0->0.12->0. schedule next 2.5-8s. Only when sound on & daytime? Fun: birds only in day; at night maybe crickets: rapid pulses at 4200Hz bandpass noise ticks... crickets = short noise bursts through highpass repeating 15Hz amplitude. Could do osc square 20Hz gating noise gain. Implement simple cricket: noise->bandpass(4500)->gain gated by square osc via gain.gain with setValueCurve? Simpler: osc(saw 4200)*tremolo. Eh — implement: cricketGain with LFO square 22Hz connected to gain.gain (scaled). Toggle by night factor. Might be annoying; volume tiny 0.03. OK include, subtle.\n\nKeep audio code compact but complete.\n\nUI HTML: \n- top-left panel: title \"Whispering Tree\", wind slider, sun slider, palette buttons (4 colored dots), sound button, info line (drag to orbit).\n- Loading? No.\n\nFonts: use system + Google font? Keep system stack to avoid extra deps, or include a Google font link for prettiness — fine to include.\n\nNow, sky shader:\n\n```glsl\nvarying vec3 vDir;\nuniform vec3 uTop; uniform vec3 uBottom; uniform vec3 uSunDir; uniform vec3 uSunColor; uniform float uSunI;\nvoid main(){\n vec3 d = normalize(vDir);\n float h = clamp(d.y, 0.0, 1.0);\n vec3 col = mix(uBottom, uTop, pow(h, 0.6));\n float s = max(dot(d, uSunDir), 0.0);\n col += uSunColor * (pow(s, 350.0) * 1.5 * uSunI); // disc\n col += uSunColor * (pow(s, 8.0) * 0.25 * uSunI); // halo\n // horizon glow\n col += uSunColor * 0.12 * pow(1.0 - abs(d.y), 6.0) * uSunI;\n gl_FragColor = vec4(col, 1.0);\n}\n```\nBelow horizon keep bottom color (mix handles since h clamped).\n\nTime-of-day mapping t∈[0,1]:\n- ang = lerp(0.05π, 0.95π, t)? Let sun elevation e = sin(π * t) hmm want sunrise at t=0.1, noon .5, sunset .9, with t=0/1 = night. azim = lerp(-1.2, 1.2, t).\n- sunDir = (cos(azim)*cosEl, sinEl, sin(azim)*cosEl) where el = π*(t-0.06)*1.0? Let's: el = lerp(-0.25, π+0.25, t) so sun goes below horizon at ends, giving night. sinEl negative at ends. dayF = smoothstep(0.15,0.45,sinEl)... define:\n - sunH = sin(el) maybe clamp.\n - dayF = smoothstep(0.2, 0.6, sunH)\n - duskF = (1-dayF) * smoothstep(-0.05, 0.2, sunH)?? Define duskF = smoothstep(-0.1,0.25,sunH)*(1-dayF)... simpler: compute three weights:\n nightW = 1 - smoothstep(-0.15, 0.05, sunH)\n dayW = smoothstep(0.25, 0.6, sunH)\n duskW = max(0, 1 - nightW - dayW)\n Colors = night*nightW + dusk*duskW + day*dayW for top, bottom, sun color, fog, light intensity = 0.15*nightW+0.9*duskW+1.25*dayW etc.\n\nUpdate: dirLight position = sunDir*40; color/intensity; hemi intensity 0.2+0.5*dayW; sky uniforms; fog color; star opacity = nightW; falling leaves unaffected.\n\nExposure constant.\n\nAlso cloud? skip — clean.\n\nShadow config: dirLight.shadow.camera ortho box ~ ±12, near 1 far 80, mapSize 2048, bias -0.0005, normalBias 0.02? tune: normalBias 0.5 maybe for leaf acne. Use radius blur (PCFSoft).\n\nCamera: pos (9, 5.5, 12) look at (0,4,0). Controls target (0,4,0), maxPolar 0.49π... allow slight below? min 0.1. enableDamping. maxDistance 40, minDistance 4.\n\nGround y=0. Tree at origin.\n\nGrass texture canvas 256: fill #4e7a3a base? Palette maybe shift with leaf palette? Ground stays greenish but autumn ground could go olive — nice: tint ground color per palette via material.color multiply (texture grayscale-ish). Make grass canvas neutral luminance greens... to keep simpler: draw actual green grass; palette change slightly adjusts material color tint (autumn -> multiply #d8b56a? would muddy). Keep ground static green; fine.\n\nAdd subtle flowers? skip. Rocks: 5 dodecahedron small gray with flat shading — adds composition. Include quickly (cheap). Also maybe a swing? no.\n\nPetals for blossom palette — falling leaves color updates.\n\nEdge cases: WebAudio requires gesture — button click. Also resume on visibility change? skip.\n\nLet me also add devicePixelRatio cap 2.\n\nWrite the final HTML now. Also add OrbitControls + BufferGeometryUtils from jsDelivr matching 0.128.0. Check mergeBufferGeometries exists in r128 — yes (added r125?). It existed as mergeBufferGeometries in r126+. OK.\n\nOne concern: onBeforeCompile with custom attributes — must ensure attributes exist on geometry, which they do. For depth material patch, geometry includes aData so fine, but depth material doesn't declare aTint usage — we skip tint there.\n\nAlso `#include ` exists in meshphysical fragment (map_fragment/color_fragment ordering: `` present). Yes.\n\nVertex: replace `#include ` — present in both standard and depth vertex shaders. \n\nLeaf material: MeshStandardMaterial({map, alphaTest:0.45, side:DoubleSide, roughness:0.85, metalness:0, color, emissive}). transparent false w/ alphaTest — good for depth.\n\nBark: MeshStandardMaterial({map:barkTex, roughness:0.95}) with wind injection (bark code). uTreeHeight uniform.\n\nbark wind must be subtle: amp 0.25*wind.\n\nTrunk base shouldn't move — hNorm^2 handles.\n\nNow grass shader? Standard is fine (with map). The user asked \"shader with light\" — we have multiple custom shaders (sky, falling leaves) + injected wind shaders + full lighting rig. Good enough; also I can add a custom \"leaf glow\" — no, enough.\n\nFalling leaves shader:\n\n```glsl\n// vertex\nattribute float aRand;\nuniform float uTime,uWind;\nvarying float vAlpha; varying float vRot;\nvoid main(){\n vec3 p = position;\n float fall = mod(uTime*(0.55+aRand*0.5)+aRand*17.0, 9.0);\n p.y = 9.0 - fall;\n p.x += sin(uTime*1.2+aRand*40.0)*0.6 + fall*uWind*0.55*vec? \n p.x += fall*0.9*uWind; p.z += fall*0.6*uWind;\n p.x += sin(fall*2.0+aRand*20.)*0.4;\n vRot = uTime*(1.0+aRand*2.0)+aRand*6.28;\n vAlpha = smoothstep(0.0,0.6,9.0-fall)*smoothstep(0.0,0.8,fall-0.0)*...; also gate by aRandwindGain->master\n // rustle\n bandpass 3400 Q0.7, rustleGain 0\n mkNoise()->rustleFilter->rustleGain->master\n // crickets\n const cf=C.createBiquadFilter(); bandpass 4800 Q6; cg gain 0\n const trem=C.createGain(); trem.gain.value=0; // amplitude gate via osc? Use osc square-> gainAudioParam through gain node scaling\n Actually: const lfo=C.createOscillator(); lfo.type='square'; lfo.frequency.value=24; const lg=C.createGain(); lg.gain.value=0.5; lfo.connect(lg).connect(trem.gain); trem.gain.value=0.5; -> pulsing 0..1\n mkNoise()->cf->trem->cg->master\n // wind LFOs\n lfo1 sine 0.07 -> gain 130 -> windFilter.frequency\n lfo2 sine 0.13 -> gain 0.12 -> windGain.gain\n ramp master to 0.9\n this.scheduleBird();\n },\n setWind(v){ if(!this.ctx)return; const t=this.ctx.currentTime; this.windGain.gain.setTargetAtTime(0.06+v*0.30, t, 0.4); this.rustleGain.gain.setTargetAtTime(v*0.14+0.01,t,0.3); this.windFilter.frequency.setTargetAtTime(240+v*520,t,0.5);} ,\n setNight(n){ cricketGain target n*0.05 },\n chirp(){ ... if day & on },\n toggle()\n};\n```\nBrown noise via brownian integrates — careful clipping; scale 3.5 typical.\n\nBird chirp impl:\n```js\nchirp(){ const C=this.ctx; if(!C||!this.on) return; if(dayFactor>0.4){ \n const o=C.createOscillator(), g=C.createGain(); o.type='sine';\n const t=C.currentTime; const f0=2200+Math.random()*1200;\n o.frequency.setValueAtTime(f0,t);\n const n=2+Math.floor(Math.random()*3);\n for(let i=0;ithis.chirp(), 2500+Math.random()*7000); }\n```\nKeep reference via this.birdTimer not needed.\n\nSound toggle button text updates; if first click -> start(); on=true; master ramp.\n\nUI sliders: input events set windUniforms.uWind.value (0..2), audio.setWind, gust CPU computed each frame: gust = 0.55 + 0.45*(sin(t*0.5)*0.5+sin(t*0.23+1.7)*0.5) mapped 0..1 — combine: g=0.5+0.5*sin(...)... keep simple: uGust = 0.6+0.4*Math.sin(t*0.4)+0.2*Math.sin(t*0.9) clamp 0.2..1.2.\n\nSun slider t 0..1 default 0.45.\n\nPalette buttons set leafColor, leafEmissive, tint target?, falling leaf color, maybe blossom also tints light pink? Keep: leaves color+emissive, particles color. Also small flowers? no.\n\nAlso palette changes: autumn ground tint? Set ground material.color: summer #ffffff, autumn #d9c9a8? multiply warm. blossom #ffeef5 slight, mystic #cfe8ff cool. Nice subtle.\n\nMystic palette: leaves teal #37b8a6, light stays. ok.\n\nWrite HTML/CSS: dark glass panel, range styling minimal, buttons. Title. Small credit footer. Responsive panel.\n\nAlso add double-click to reset camera? skip.\n\nLet me now write the whole file carefully, ensuring shader string correctness for r128 (begin_vertex etc. valid; uv attribute named uv; for points gl_PointCoord fine).\n\nBark texture canvas details (512x512): base #6b4f37; horizontal slight variation; vertical streaks; knots: few dark ellipses with rings. Repeat wrapping; on cylinder UV it wraps around circumference 1x and along height; set repeat (2,1)? Cylinder UV u goes around. repeat.set(2,2) maybe. fine.\n\nGrass canvas 256: base #567b3c; many small strokes darker/lighter greens random directions (like blades): 2500 lines len 2-6. plus patch noise: 40 radial blobs alpha 0.08 darker/lighter. repeat 10.\n\nAlso add subtle ground AO ring under tree: circle texture dark center radial? Place a radial-gradient dark circle mesh slightly above ground (y=0.01) opacity 0.35 — grounds the tree. Canvas radial gradient black->transparent. Include (cheap, pretty).\n\nRocks: 4 dodecahedrons random scale 0.2-0.5 gray #8a8d90 roughness 1 flatShading true, positions radius 3-7 random, castShadow.\n\nNow lighting rig:\n- dirLight color from time; intensity 1.3*day+dusk...\n- hemi: sky color top-ish, ground brownish, intensity 0.5+0.3day\n- Maybe small ambient 0.05. Hemi covers.\n\nRenderer: shadowMap PCFSoft, toneMapping ACES, exposure 1.15, outputEncoding sRGB.\n\nTextures encoding: set tex.encoding = sRGBEncoding for color maps.\n\nCamera fov 45.\n\nFrame loop: t=clock.getElapsedTime(); uTime=t; gust update; controls.update; renderer.render.\n\nSun update function called on slider + once.\n\nNow, sky sphere: SphereGeometry(220, 32, 15), BackSide ShaderMaterial, depthWrite false, fog false. Stars Points 500 positions on sphere radius 210 upper hemisphere random full sphere fine; PointsMaterial size 1.2 sizeAttenuation false, transparent, opacity nightW*0.9, color white, depthWrite false. Twinkle skip.\n\nFog: scene.fog = new THREE.Fog(0xaad4f5, 30, 120). Update color per time.\n\nGround plane 200x200? With fog to 120 fine; sky sphere 220 beyond fog far but shader fog false so visible. Ground plane radius 150 circle geometry. Grass repeat 40? PlaneGeometry(300,300) repeat 60. Blades size then ok.\n\nHmm plane 300 with fog far 120: distant ground fully fogged to fog color, sky near horizon bottom color — match fog color to horizon bottom color for seamless. I'll set fog color = bottom sky color each update. \n\ndirLight shadow camera: left/right/top/bottom ±14, near 5 far 90, position sunDir*45 + target 0.\n\nLeaf cluster orientation: random Euler all axes — planes crossed random; double-sided so fine. normal random → lighting varied; with DoubleSide standard material handles flipping? Standard material with DoubleSide lights backface using flipped normal — yes gl_FrontFacing handled.\n\nBut my wind code references objectNormal — fine.\n\nAlso normal flutter removed — using up flutter. ok.\n\nCheck merge: PlaneGeometry attributes: position, normal, uv + our aData(2), aTint(1) — consistent across all leaf geos. mergeBufferGeometries(leafGeos) → one geometry. Also need geometry.computeBoundingSphere after? merge does. ok.\n\nBark cylinders: position/normal/uv consistent (CylinderGeometry has those). Merge → bark mesh.\n\nSet castShadow/receiveShadow: bark cast+receive; leaves cast+receive (self-shadow acne on leaves? normalBias 0.6, bias -0.0002; alphaTest in depth handles holes; leaves receive fine). Ground receive.\n\ncustomDepthMaterial for leaves with map+alphaTest+wind. Also for bark? Bark wind displacement small; shadow mismatch minor; patch anyway same function (bark code) — depth material patch uses begin_vertex replacement, works. Do it for consistency.\n\nWait: MeshDepthMaterial has no map by default—pass map in constructor params works? MeshDepthMaterial supports map. Yes.\n\nAlso for blossom palette, maybe scale? no.\n\nTint injection detail: I said multiply diffuse by vec3(1.25,1.15,0.55)*vTint mix — for blossom palette yellowing pink → salmon, fine.\n\nAlternatively vary lightness: mix(diffuse, diffuse*1.35, vTint) simpler and palette-safe. Use brightness variation: `diffuseColor.rgb *= (1.0 + vTint*0.45);` plus slight hue toward yellow-green only for green? Keep brightness-only — safe. Add subtle: diffuseColor.rgb = mix(diffuseColor.rgb, diffuseColor.rgb*vec3(1.3,1.25,0.9), vTint*0.6); mild warm. ok mild.\n\nNow UI text: english. Buttons: Sound 🔇/🔊. Palette swatches with labels. Sliders labeled Wind, Sun. Hint \"Drag to orbit • Scroll to zoom\".\n\nMobile touch: orbit controls fine.\n\nWrite everything now. Also guard WebGL fail? skip.\n\nEstimate final ~650 lines. Good.\n\nOne more: falling leaves uTex single leaf canvas: draw one leaf: bezier leaf shape greenish-white gradient + vein. Since tinted by uColor uniform, draw white/gray leaf with vein darker, alpha shape.\n\ngl_PointSize with perspective: size*(scale/ -mvPosition.z), scale = height/2 / tan(fov/2)? Use uniform uScale = renderer height * 0.5 / tan(fov*0.5 rad). Simpler: gl_PointSize = uSize * (140.0 / -mv.z). tune constant 140 for fov45 at ~10 dist gives size px = uSize*14. uSize attr 0.6-1.2 → ~8-17px at 10m. ok.\n\nNow colors of sky sets:\n\nday: top #2f6fd0? Let's pick: topDay(0x2a6fd6) bottomDay(0xbfe3f7) sunDay(0xfff3d6)\ndusk: top(0x3a3f77) bottom(0xff9e5e) sun(0xffb257)\nnight: top(0x050a1e) bottom(0x101c3a) sun(0x9fb4ff) — moon glow! At night sun dir below horizon; glow won't show (sun below). Could turn sun into moon: when night, flip sunDir for glow? Nice: moonDir = -sunDir when sunH<0, use moon color, smaller disc. Implement: glowDir = sunH>0.02? sunDir : normalize(-sunDir); sunI: day 1, night 0.5. Moon disc pow 800. Eh keep simple: use same disc with sunI=0.6 & bluish — looks like moon. \n\ndirLight at night: intensity 0.12 color #7e94ff (moonlight), position = -sunDir*45. Handle in update: if sunH<0: light from moon dir.\n\nHemi night: 0.15 bluish.\n\nFog night #0d1730.\n\nFalling leaves unaffected.\n\nStar opacity = nightW.\n\nFireflies at night?? skip. Enough.\n\nAlso initial defaults: wind 1.0, sun t=0.42 (afternoon), palette summer.\n\ndirLight.target at origin default — add to scene.\n\nNow write code. Careful with template literals inside onBeforeCompile strings (use string concat to avoid nested backticks issues — nested backticks fine if separate strings; but ${} interpolation accidental—use plain strings).\n\nAlso add uTreeHeight uniform for bark: constant 8.5.\n\ngust uniform shared object windUniforms.\n\nLet me write bark vertex code string:\n\n```js\nconst BARK_VERT = `\nfloat hN = clamp(transformed.y / uTreeHeight, 0.0, 1.0);\nfloat bendA = hN * hN;\nfloat w1 = sin(uTime * 1.4 + transformed.y * 0.4);\nfloat w2 = sin(uTime * 3.1 + transformed.x * 0.8 + transformed.z * 0.6);\nfloat wob = (w1 + 0.5 * w2) * bendA * uWind * uGust;\ntransformed.x += wob * 0.28 * 0.83;\ntransformed.z += wob * 0.28 * 0.55;\n`;\n```\n\nLEAF_VERT:\n```glsl\nvTint = aTint;\nfloat ph = aData.x;\nfloat fl = aData.y;\nfloat gg = uGust * (0.75 + 0.25 * sin(uTime * 0.4 + ph * 0.35));\nfloat sw = sin(uTime * 1.6 + ph) * 0.6 + sin(uTime * 3.3 + ph * 1.9) * 0.4;\nfloat amp = sw * gg * uWind * fl;\ntransformed.x += amp * 0.42 * 0.83;\ntransformed.z += amp * 0.42 * 0.55;\ntransformed.y += sin(uTime * 1.15 + ph * 1.3) * 0.10 * gg * uWind * fl + sin(uTime * 5.2 + ph * 8.0) * 0.03 * uWind * fl;\n```\namp up to ~0.42*1*gust(≤1.2)*wind(≤2)*1.2 ≈ 1.2 max — strong at wind 2, ok.\n\nuWind slider 0..2 default 0.9.\n\nHeaders for each: \ncommon header: `uniform float uTime; uniform float uWind; uniform float uGust;`\nbark adds `uniform float uTreeHeight;`\nleaf adds `attribute vec2 aData; attribute float aTint; varying float vTint;`\n\nNote: for depth material leaf, attributes declared but depth program also compiled with same geometry — attributes present, fine.\n\nFragment patch leaf: prepend `varying float vTint;` and replace color_fragment.\n\nPotential issue: r128 shader chunk `color_fragment` exists — yes.\n\nAlso must set material.customProgramCacheKey? onBeforeCompile same for both materials but different code paths (leaf vs bark) — default cache key includes onBeforeCompile.toString() — our functions differ via closures but toString may be same source → cache collision! In r128, programCacheKey = onBeforeCompile.toString() — if identical strings, bark might reuse leaf program missing attributes... To be safe set material.customProgramCacheKey = () => unique string. r128 supports customProgramCacheKey (added r118? It's in r128, yes). Set distinct keys.\n\nDepth materials: default depth already has own key; our onBeforeCompile differs similarly—set keys too.\n\nTime to write it all out. I'll aim for polished, commented, organized code.\n\nCSS: panel top-left, backdrop blur, rounded, subtle border, small swatch circles, range inputs styled accent-color. Title big serif? Use 'Georgia' fallback or Google font 'Cormorant'? Use system: font-family: 'Segoe UI' etc. Add letterspacing. Nice enough without external font. Actually a Google font adds charm: use 'Marcellus' or 'Cormorant Garamond' for title + 'Inter' body. Include link. Fine.\n\nStructure:\n\n```html\n

Whispering Tree

Wind

Sun

buttons data-pal\n \n

Drag to orbit · Scroll to zoom

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