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Canopy Part Titlethree.js · Link onlyLeaves sweep through the frame and part to reveal the headline. Idea only: The repo's CREDITS.md says the origin of its two leaf textures…Code 3D Extrudethree.js · Apache-2.0Syntax-highlighted code on a lit, beveled 3D slab that rotates through real space and settles to a readable rest — true WebGL depth and…Code Particle Assemblethree.js · Apache-2.0Thousands of GPU points scatter through space and fly to the exact glyph pixels of the code, resolving into readable syntax-highlighted…Code Shader Dissolvethree.js · Apache-2.0The code compiles into existence: a GPU fragment shader resolves it out of seeded noise with a chromatic dissolve front and edge glow, then…Cuboid Carouselthree.js · Apache-2.0A chain of bevelled cuboids rides a traveling wave as a content carousel.Exploded Stackthree.js · Apache-2.0Isometric layer plates explode apart with a label beside each layer, hold, then collapse back into one stack. Built for architecture and…Frost Sequence Camera Orbitthree.js · Link onlyAn orbiting camera follows an ice logo as it breaks apart, reforms into two text moments, and fades. Idea only: The repo's CREDITS.md says…Gallery Tunnelthree.js · Apache-2.0An infinite corridor of panels: a square tunnel receding to a vanishing point, its floor, ceiling and walls tiled with saturated color…Glass Herothree.js · Apache-2.0A solid glass object rises in front of a giant headline and keeps turning, so the type bends and splits into color through it.Glass Shard Titlethree.js · Link onlyGlass shards fly in through fog and tile themselves into the headline. Idea only: The repo's CREDITS.md says the origin of its matcap image…iOS 26 Liquid Glass Home Screenthree.js · Apache-2.03D iPhone with a normal iOS 26 home screen, liquid glass app icons, shader wallpaper, dock, and fluid glass notifications that drop from…Liquid Glass Notificationthree.js · Apache-2.0Frosted glass notification cards floating over an aurora shader background. The repo marks it experimental.Liquid Glass Widgetsthree.js · Apache-2.0Frosted glass stat cards, showcase panel and pill chips over an aurora shader background. The repo marks it experimental.macOS Tahoe Liquid Glass Desktopthree.js · Apache-2.03D MacBook with a macOS Tahoe-style desktop, glass menu bar, Finder window, dock, and cinematic device camera move. The repo marks it…Orbit Cardthree.js · Apache-2.0A single feature card orbits a dot sphere on approved Blender camera motion.Product Turntablethree.js · Apache-2.0A product turns a full revolution on a studio plinth in a seamless loop. Drop in a GLB or glTF model, or keep the built-in drink can with…Spiral Galaxythree.js · Apache-2.0A spiral galaxy seen from outside, turning with real differential rotation: inner stars orbit faster than outer ones, so the arms wind up…iPhone & MacBook 3D Showcasethree.js · Apache-2.0Real GLTF iPhone 15 Pro Max and MacBook Pro models with live HTML-in-Canvas screen content, morphing glass lens, product review camera…Liquid Backgroundthree.js · Apache-2.0Organic liquid simulation with vertex displacement on a subdivided plane. HTML content floats above rippling fluid surface with real-time…Liquid Glassthree.js · Apache-2.0A sample landing page (headline and stat cards) seen through a liquid-glass parallax layer, drawn with HTML-in-canvas and WebGL. The repo…Portalthree.js · Apache-2.0A sample light-mode page opens through a portal into a second page: an HTML-in-canvas WebGL transition. The repo marks it experimental.Shatterthree.js · Apache-2.0A sample page breaks like glass to show the page behind it: HTML-in-canvas panels shattered in WebGL. The repo marks it experimental.Wireframe Portal Titlethree.js · Apache-2.0A wireframe portal bursts open, the title comes through, then its letters swap into a second phrase.Three Orbiting Cardsthree.js · Apache-2.0A Three.js-powered orbit scene driven by a paused GSAP timeline for deterministic renders. Paste-in snippet: it registers no timeline, you…Path-Traced 3Dthree.js · Apache-2.0A three.js scene with a fast raster preview and an opt-in path-traced export, with three-gpu-pathtracer vendored beside it. In the examples…threejs-animationthree.js · Link onlythree.js animation: keyframes, skeletons, morph targets, mixing.threejs-fundamentalsthree.js · Link onlythree.js basics: scene, cameras, renderer, object hierarchy, coordinates.threejs-geometrythree.js · Link onlythree.js geometry: built-in shapes, buffer geometry, custom shapes, instancing.threejs-interactionthree.js · Link onlythree.js interaction: raycasting, controls, pointer input, selection.threejs-lightingthree.js · Link onlythree.js lighting: light types, shadows, environment lighting.threejs-loadersthree.js · Link onlythree.js asset loading: glTF, textures, HDR environments, async patterns.threejs-materialsthree.js · Link onlythree.js materials: PBR, basic, shader materials and their properties.threejs-postprocessingthree.js · Link onlythree.js post-processing: bloom, depth of field, screen effects.threejs-shadersthree.js · Link onlythree.js shaders: GLSL, uniforms, custom effects.threejs-texturesthree.js · Link onlythree.js textures: types, UV mapping, environment maps, settings.threejs-world-generationthree.js · Link onlyBuilding editable three.js worlds you can fly a camera through, from text or a structured brief.FlatPanelthree.js · Apache-2.0A flat textured panel with a contact shadow for real 3D page shots.hero3d (3D hero object)three.js · Apache-2.0A three.js layer on the same clock for one physical hero: a logo extruded from SVG paths, extruded text, a coin, a glass slab, a phone or a…three.js r186 and addons (bundled)three.js · Apache-2.0The three.js module build and stock example add-ons (loaders, post-processing passes, RoundedBox and Text geometry), edited only to import…opentype.js 1.3.4 (bundled)three.js · Apache-2.0Font parser used to extrude 3D text. MIT (Frederik De Bleser and contributors); bundles tiny-inflate and a codePointAt polyfill, both MIT.threejs-game-directorthree.js · MITThe entry skill: sets how far to take a three.js browser game from the user's own words (a small arcade game is not a request for the…threejs-gameplay-systemsthree.js · MITHow to make a playable loop: a one-page design brief, a core-loop contract proved in code, a level plan, then small ownership folders…threejs-game-ui-designerthree.js · MITHow to design a game's HUD, menus and touch controls as game interface, not a web dashboard: hierarchy (status, objective, feedback…threejs-debug-profilerthree.js · MITHow to find why a three.js page is blank, broken or slow: reproduce first, then an ordered checklist for blank canvases (canvas size, WebGL…threejs-qa-releasethree.js · MITHow to prove a three.js game works the way a player meets it: build, open in a real browser, check console errors and non-blank canvas…threejs-3d-generatorthree.js · MITDrives the paid Tripo API to make 3D models for a three.js project: text to 3D, image to 3D, texturing, auto-rigging, animation…threejs-image-generatorthree.js · MITDrives Google's Gemini image API to make the 2D layer of a 3D project: concept sheets, clean reference images for image-to-3D, texture…threejs-audio-generatorthree.js · MITDrives the paid ElevenLabs API for game sound: short sound effects, looping ambience, music tracks, spoken lines, voice conversion from a…Renderer and environment map setupthree.js · MITFive lines that give a scene studio reflections with no HDR file: sRGB output, ACES tone mapping, and a RoomEnvironment baked once through…Painted metal materialthree.js · MITClearcoat over a colored base, for a car body or a hull panel. One line of three.js; assumes the environment map setup.Bare brushed metal materialthree.js · MITRaw steel that needs the environment map to read as metal. One line of three.js; assumes the environment map setup.Rubber materialthree.js · MITNear-black, almost no reflection, for tyres and grips. One line of three.js; assumes the environment map setup.Matte plastic materialthree.js · MITMid roughness with a muted reflection, for housings and crates. One line of three.js; assumes the environment map setup.Glossy ceramic materialthree.js · MITA sharp wet-look reflection with full clearcoat. In our trial the white version bloomed as hard as the emissive ball under a bright light…Emissive signal materialthree.js · MITA dark base with a glow strong enough to feed bloom, for beacons, status lights and pickup cores. One line of three.js; assumes the…Cloth materialthree.js · MITHigh roughness plus sheen for the soft edge highlight of fabric. One line of three.js; assumes the environment map setup.Real refractive glass materialthree.js · MITTrue transmission for one or two hero surfaces seen close. Costly: every transmissive material adds a whole extra scene render each frame…Cheap fake glass materialthree.js · MITTransparent clearcoat with no extra render pass, for repeated windows, visors and shields. One line of three.js; assumes the environment…Fresnel rim glowthree.js · MITAdds a colored glow at the grazing edges of a standard material by injecting three lines of GLSL with onBeforeCompile, so the lit material…Scrolling emissive panelsthree.js · MITBands of light that travel along a surface, for energy conduits, charge bars and data flowing through a pipe. Time is one uniform (uTime)…Wind swaythree.js · MITSways grass cards, flags or cables in the vertex shader, anchored at the base, with each instance of an InstancedMesh out of phase by its…Dissolve and spawnthree.js · MITMakes an object appear or vanish in small blocks with a glowing edge. One uniform, uProgress from 0 to 1, is the whole state, which makes…Gradient sky domethree.js · MITA back-facing sphere with a small shader: a top color, a horizon color, a sun disc and its halo. One draw call and no textures, for any…Post-processing chainthree.js · MITThe finishing pass: EffectComposer with a render pass, bloom (strength 0.45, radius 0.3, threshold 0.85), a small vignette shader, and…Vertex-colour ambient occlusionthree.js · MITDarkens creases by baking a color attribute into the mesh: contact shading with no texture and no extra draw call.Polygon-offset decalsthree.js · MITA flat mesh laid on a surface with polygonOffset so it does not flicker: panel lines, numbers and marks.Fake contact shadowthree.js · MITA flat plane with a radial-gradient canvas texture under an object: grounds a floating thing with one draw call and no shadow map.Emissive level-of-detail signalsthree.js · MITRaise emissiveIntensity or swap material by distance so far lights still read; keep the color the same so identity survives.Matcap propsthree.js · MITMeshMatcapMaterial bakes lighting into one texture: the cheapest lit-looking material for background props. It ignores scene lights.TweenManager and three easingsthree.js · MITA 40-line tween runner with easeInQuad, easeOutCubic and easeOutBack (the one that overshoots), advanced by a delta you pass in. No…Trauma-based screenshakethree.js · MITCamera shake where shake equals trauma squared, trauma decays 1.4 per second and is capped at 1, and the noise comes from accumulated time…Hitstopthree.js · MITA 60 to 90 ms near-freeze on a heavy hit: scale the gameplay delta to 0.05 while the camera and feedback keep real time. In a video it is…Squash and stretchthree.js · MITDeform on impact and bounce back with easeOutBack, keeping volume: when one axis scales by s the other two scale by 1 / sqrt(s). About 0.9…Camera kick and FOV punchthree.js · MITAdd 4 to 8 degrees of field of view on a boost or a hit and let it decay with a 0.2 s time constant; remember updateProjectionMatrix()…Impact flashthree.js · MITPulse a material's emissiveIntensity to a peak and tween it back in 0.22 s; for big events add a one-frame white overlay div fading over…Pickup popthree.js · MITA collected thing scales up to 1.6, rises and fades over 0.28 s, with a 120 ms scale punch on its counter. A good recipe for a number or an…Gamepad rumblethree.js · MITFeature-detected controller vibration with a swallowed promise. Interactive use only; nothing to render. Code is in the reference page…Audio pitch variance and duckingthree.js · MITVary each playback's pitch by plus or minus 6 percent from a seeded generator so repeats do not sound machine-made, and duck the bed under…Rapier setup with a fixed timestepthree.js · MITHow to add real physics to a three.js scene: Rapier's world, a 1/60 s fixed step fed by a clamped accumulator, bodies and colliders…Loop.tsthree.js · MITA 30-line animation loop: requestAnimationFrame, delta in seconds capped at 0.05, update then render. It reads the browser's clock; to…Renderer.tsthree.js · MITcreateRenderer (antialias, sRGB output, ACES tone mapping at 1.05 exposure, PCF shadows) and resizeRenderer, which keeps canvas size, pixel…CameraRig.tsthree.js · MITA follow camera at a fixed offset that eases toward its target with an exponential lag (1 - exp(-dt / lag)) and looks slightly ahead of it…random.ts (seeded random)three.js · MITmulberry32 in nine lines: createSeededRandom(seed) returns a function that gives the same sequence every time. The thing to use in place of…dispose.tsthree.js · MITdisposeObject3D walks a three.js object and frees its geometries, materials and every texture on them. Use it when a scene is torn down so…InputController.tsthree.js · MITKeyboard (WASD and arrows, Space or Shift to dash) and a touch stick merged into one movement vector, with pointer-cancel handling so a…AudioSystem.tsthree.js · MITA Web Audio context unlocked on the first key or pointer press, and one synthesised pickup blip (a triangle wave swept up over 0.12 s)…GameAudio manager shapethree.js · MITA 25-line Web Audio manager: unlock on a gesture, load and decode buffers by id, play through named gain groups (master, sfx, ui, ambience…3dviz-pro-maxthree.js · MITOne agent skill for making 3D scenes and explainers in three.js, with Blender as an optional helper. A ten-step workflow (intent, reason…Arm in Motionthree.js · MITA registered bone-and-muscle elbow study with an approximate hinge and opposing biceps/triceps shape changes. Example study (anatomy and…Inside the Brainthree.js · MITA registered-anatomy inspection of selected cortical gyri, white matter, cerebellum, and brainstem components. Example study (anatomy and…Breath by Breaththree.js · MITA registered lung-lobe study with an authored thoracic expansion field, schematic diaphragm, and directional airway cues. Example study…The Living Heartthree.js · MITA registered-anatomy heart study with an anterior cutaway, selected vessels and valves, and an authored cardiac-cycle pose. Example study…The Moving Kneethree.js · MITA registered bone assembly for resting, exploded, and approximate hinge inspection of the knee. Example study (anatomy and physiology): a…Upper-body Muscle Atlasthree.js · MITA source-registered inspection atlas for selected upper-body muscle portions and their skeletal framework. Example study (anatomy and…Coopered barrel kitthree.js · MITA coopered oak barrel with bulged staves, four iron hoops and a three-plank head, parameterised by height, radius, stave count, bulge and…Biped walker kitthree.js · MITA hatted village figure - tapering torso, belted tunic, two-joint legs and arms - with a procedural walk cycle whose arms counter-swing the…Two-wheeled farm cart kitthree.js · MITA two-wheeled farm cart with eight-spoke wheels, a planked bed, side stanchions and draught shafts, with an animate(dt) that rolls the…Pegged clothesline kitthree.js · MITTwo braced poles carrying a sagging line of pegged washing, each sheet at its own width, drop, yaw and lean, parameterised by span, height…Nailed shipping crate kitthree.js · MITA nailed shipping crate of horizontal planks between four corner posts, with a diagonal brace and a battened lid, parameterised by size…Paddock fence run kitthree.js · MITA paddock fence of instanced posts carrying three sagging rail courses, parameterised by length_m, post count, height, sag and seed. A…Iron post lantern (blender gltf) kitthree.js · MITA Blender-authored wrought iron post lantern exported as a 136 KB GLB: post on a stepped base, brass collars, hook arm with a diagonal…Wrought iron lantern post kitthree.js · MITA wrought iron lantern post: stepped base flare, a tapering collared shaft, a scrolled bracket and a glazed head whose panes are emissive…Five-bay timber long hall kitthree.js · MITA five-bay timber long hall with two doors, a covered porch, a hanging sign and a chimney at each end of the ridge, parameterised by width…Trestle market stall kitthree.js · MITA trestle market stall with a striped canopy that sags between its posts, a scalloped valance, a plank counter on trestles, crates, sacks…Quadruped walker kitthree.js · MITA four-legged village animal - barrel body, arched neck, horned head, three-segment legs and a tail - with a procedural diagonal-pair walk…Instanced water reeds kitthree.js · MITA clump of instanced reed blades on a faceted tussock, with seed heads carried on the blade tips and an animate(dt) that bends every blade…Glacial rock cluster kitthree.js · MITA scatter of part-buried boulders built from five facet-jittered shapes and a pebble ring, parameterised by count, spread and seed, with an…Battered round stone tower kitthree.js · MITA battered round stone tower with a corbelled crenellated crown, a conical cap and banner, arrow slits spiralling up the shaft, and an…Hanging signboard kitthree.js · MITA hanging tavern sign: stepped stone foot, timber post, a scrolled iron bracket and a bevelled board with a raised border and a carved boss…Segmental-arch stone bridge kitthree.js · MITA single segmental-arch stone bridge with a voussoir ring and raised keystone, coursed spandrels, four cutwaters, a cobbled deck and a…Stone guildhall (blender gltf) kitthree.js · MITA Blender-authored stone guildhall exported as a 661 KB GLB: plinth, string course, capped chimney, a twelve-course tiled gable roof…Timber-framed cottage kitthree.js · MITA two-bay timber-framed cottage with a tiled gable roof, inset windows and a chimney socket, parameterised by width, depth, storeys, roof…Conifer with countable boughs kitthree.js · MITA conifer with a flared root collar, a leaning tapered bole and eight whorls, each a skirt with nine boughs poking past it, with sway(dt)…Round-crowned broadleaf tree kitthree.js · MITA broadleaf tree with a flared root collar, a four-segment leaning trunk, four branches and a crown of seven overlapping canopy lobes, with…Watermill with a turning wheel kitthree.js · MITA two-storey stone-and-timber mill with an overshot wheel on a wheel socket, a launder feeding it, a first-floor loading door under a hoist…Stone draw-well kitthree.js · MITA stone draw-well: three courses of dressed blocks under a coping ring, two posts, a shingled gable roof, a cranked windlass with coiled…timber-cottage-t3 (baked hero GLB)three.js · MITThe T3 hero: the cottage module's own geometry, baked in Blender. A 1.8 to 1.9 MB GLB: bevelled edges, one UV atlas, baked color, occlusion…watermill-t3 (baked hero GLB)three.js · MITThe T3 hero: the watermill module's own geometry, baked in Blender. A 1.8 to 1.9 MB GLB: bevelled edges, one UV atlas, baked color…bevelled-box primitivethree.js · MITThe base solid of every kit: a chamfered block that can carry edge wear. A building part used inside the building kits; it has no catalog…chimney primitivethree.js · MITA brick stack with corbelled courses, a stone cap and a clay pot. A building part used inside the building kits; it has no catalog record…door-with-step primitivethree.js · MITA plank door recessed in its opening, with iron straps, a ring handle, a stone threshold and a step that breaks the wall plane at the…inset-window primitivethree.js · MITA window recessed behind the wall face: reveal, frame, glazing bars, emissive glass, sill board and its drip groove. A building part used…railing primitivethree.js · MITA run of railing in two builds: turned balusters, or a solid parapet with coping. A building part used inside the building kits; it has no…roof-tile-strip primitivethree.js · MITOne roof slope as lapped tile courses in a single InstancedMesh. A building part used inside the building kits; it has no catalog record or…sign primitivethree.js · MITA hanging trade sign: wrought bracket, eye hooks, a framed board and a painted field. A building part used inside the building kits; it has…stairs primitivethree.js · MITA straight flight: treads, real risers, a raking stringer and worn nosings. A building part used inside the building kits; it has no…timber-frame primitivethree.js · MITExposed half-timber framing that stands proud of a wall face. A building part used inside the building kits; it has no catalog record or…village-layout.jsthree.js · MITPlans a village from a seed: lanes, building plots that face the nearest lane without overlapping, and scatter zones for the gaps. The same…kit-core.jsthree.js · MITThe shared helpers every kit module imports: a material cache, a seeded random generator, a bevelled box, an inset panel, a wall with real…kit-lod.jsthree.js · MITPuts several quality tiers of one object into a single THREE.LOD with switch distances in meters and a hysteresis fraction so a slow orbit…kit-surface.js (procedural surface, tier T2)three.js · MITGives a flat-colored kit a drawn surface with no image files: seeded albedo, normal and roughness canvases for seven families (wood…kit-walk.js (gait maths)three.js · MITThree pure helpers behind the two walkers: twoBoneIk, footCycle and routeStep. The walk advances by distance traveled over stride length…camera-orbit-follow.jsthree.js · MITOrbit camera with damping, named views, a 0.9 s focus tween and a follow mode that yields when the user takes over. rig.update(dt) returns…lighting-sun.jsthree.js · MITOutdoor key, fill and rim. The defaults are dusk golden hour (a warm sun 6 degrees above the horizon, key to fill about 6 to 1); an…lighting-night-lantern.jsthree.js · MITNight made of falloff: a weak blue moon, a dim hemisphere fill and up to twelve warm lantern point lights with physical decay (60 cd at 2.4…lighting-studio.jsthree.js · MITA dark product studio: RoomEnvironment at low intensity plus three RectAreaLight panels (key, fill, rim, about 3 to 1) and one contact…post-stack.jsthree.js · MITBloom, vignette and optional depth of field through the pmndrs postprocessing package, with a careful note on tone mapping: the stack takes…Accessible route clearances and turning spacethree.js · MITPlace a cited turning space in a room and, separately, sweep a conservative clearance envelope, keeping the two reports distinct instead of…Agent Harness execution mapthree.js · MITExplain an authored agent loop with explicit tool and observation boundaries. A written recipe (abstract-systems-data; authored): the parts…Guided vehicle traffic with zone reservationthree.js · MITGive vehicles a reservation rule that they must obtain before entering shared space, so traffic behavior has an inspectable cause. A…Reachable workspace and singular configurationsthree.js · MITMap where an arm can reach and mark the configurations where it loses a direction of motion. A written recipe (robotics-control; sourced)…Autonomous planar phase portrait with time liftthree.js · MITCompare phase trajectories, vector directions and a time-lifted solution for a bounded family of planar autonomous systems. A written…Bicycle drivetrain and gear ratiothree.js · MITConnect chainring and sprocket sizes to wheel rotation through a chain that shares one linear speed. A written recipe (products-assemblies…Wide turns and inner slices on larger cubesthree.js · MITModel a larger cube where a move addresses a contiguous range of layers and center pieces carry individual identity even when they look…Binary heap, sift operations and heapsortthree.js · MITShow one structure in two views at once: the array indices that own the data and the tree that explains the ordering. A written recipe…Binomial outcomes and repeated trialsthree.js · MITConnect independent binary trial paths to exact probabilities and observed counts. A written recipe (probability-statistics; part sourced…Bit-vector SMT: model, wraparound and proof boundarythree.js · MITKeep width, modular arithmetic, signed interpretation and solver evidence explicit. A written recipe (logic-circuits; part sourced, part…Bounded maintenance procedure state playbackthree.js · MITPlay a supplied acyclic maintenance procedure through tasks and exclusive decisions with evidence-gated completion, while keeping planned…Brachial plexus nerve routingthree.js · MITFollow named nerve branches from the typical C5 to T1 roots through trunks, divisions and cords into the arm as an explicit route graph…Breadth-first search and shortest edge countsthree.js · MITExpose discovery order, the FIFO queue and shortest paths on a small unweighted graph. A written recipe (algorithms-data-structures; part…Simply supported bridge load-path beam modelthree.js · MITCompute reactions and one section response for declared point loads on a simply supported beam without presenting the result as structural…Build dependency graph and topological orderthree.js · MITShow a build plan as a directed graph whose valid orders come from its structure, and make a cycle a reported failure. A written recipe…Building service layer coordinationthree.js · MITInspect invented building services with layer toggles and explicit geometric clash markers. A written recipe (architecture-interiors…Buoyancy and floating equilibriumthree.js · MITMake the displaced volume an explicit object so flotation becomes a balance the viewer can watch settle. A written recipe…Interlocking burr and its disassembly orderthree.js · MITDesign an interlocking puzzle whose only freedom at each step is a short list of legal slides, and expose that list. A written recipe…Classical Starling capillary exchange diagramthree.js · MITBuild the classical two-pressure Starling teaching diagram and mark on the same scene where the revised steady-state view disagrees with…Cardiac cycle phases and valve statesthree.js · MITDrive valve states from an explicit phase model so opening and closing follow declared pressure comparisons rather than animation timing. A…CF ocean-current grid particle playbackthree.js · MITAdvect educational tracers over a supplied small regular rectilinear CF lon/lat current grid using one declared frozen local east/north…Precomputed flow field playbackthree.js · MITPlay back a computed flow field as data with provenance, and refuse to let the viewer treat playback as live simulation. A written recipe…Chirality and non-superimposable mirror imagesthree.js · MITLet a viewer attempt to superimpose two mirror-image molecules and fail for a structural reason they can inspect. A written recipe…CityGML stable-ID scenario differencerthree.js · MITCompare a finite set of supplied CityGML-derived urban alternatives by stable feature identity, CRS, epoch and declared attribute/geometry…Car-following waves on a closed single lanethree.js · MITSimulate continuous car-following on a periodic lane and connect every vehicle's motion to its bumper gap, approaching rate and declared…Elastic and inelastic collisions in spacethree.js · MITCompare momentum and kinetic energy across a one-dimensional central collision so that what is conserved and what is not becomes…Commutators and conjugates as piece toolsthree.js · MITBuild move sequences that touch few pieces and show why the algebraic form produces that effect. A written recipe (twisty-puzzles…Double-cone section explorerthree.js · MITRelate a movable plane to its intersection with a double cone. A written recipe (solid-geometry; sourced): the parts to model, the one…Construction task dependency and building playbackthree.js · MITLink supplied construction tasks, times and finish-start dependencies to stable building-element identities, then scrub the resulting…Convex hull of a point cloudthree.js · MITBuild the hull of an editable point set and keep its degenerate outcomes visible instead of hiding them. A written recipe (solid-geometry…Coupled gear kinematicsthree.js · MITDrive meshing gears from a shared angular constraint with inspectable pitch circles. A written recipe (rigid-mechanics; sourced): the parts…Courtyard house cutawaythree.js · MITReveal a fictional courtyard dwelling while keeping room boundaries and levels legible. A written recipe (architecture-interiors…Covariance ellipsoid and principal axesthree.js · MITShow a point cloud together with the ellipsoid built from its covariance, keeping sample estimate and population parameter distinct. A…CP and Tucker tensor component reconstructionthree.js · MITReconstruct a small explicit third-order tensor from supplied CP factors or a Tucker core and factors, linking component terms, slices and…Critical path and combinational delaythree.js · MITMake timing a property of paths through a circuit, with the longest path selected by summation rather than by appearance. A written recipe…Cross product orientation and areathree.js · MITLink ordered vectors, their normal and spanned parallelogram. A written recipe (linear-algebra; sourced): the parts to model, the one state…TLS 1.3 message state: bounded server-authenticated handshakethree.js · MITTeach a bounded TLS 1.3 message order with public metadata and explicit external-verification gates. A written recipe…Reachable cube states and their invariantsthree.js · MITLet a viewer build an impossible cube on purpose and have the model name which invariant is broken. A written recipe (twisty-puzzles…Cubic unit-cell atom accountingthree.js · MITExpose shared atom fractions across repeated cubic cells. A written recipe (molecules-materials; sourced): the parts to model, the one…Curl and circulation around a loopthree.js · MITCompare a local curl component with circulation per unit area, distinguishing the finite-disk average from its shrinking-disk limit. A…Magnetic field of a current loopthree.js · MITBuild a field around a real conductor path and keep the on-axis analytic result distinct from off-axis numerical sampling. A written recipe…Daylight and shading study over a daythree.js · MITDrive shadows from a documented solar position algorithm and keep the difference between geometry and photometry explicit. A written recipe…Delaunay tetrahedra and the empty sphere propertythree.js · MITPartition space around a point set and let the defining empty-sphere condition be tested rather than assumed. A written recipe…