threejs-skills

Sets up WebXR in Three.js — VRButton, ARButton, XRSession, controllers, hand tracking, hit testing, and immersive experiences. Use when the user asks about VR, AR, WebXR, immersive experiences, XR controllers, hand tracking, or augmented reality. Trigger keywords: WebXR, VR, AR, VRButton, ARButton, XRSession, controller, hand tracking, immersive, augmented reality, virtual reality.

Optimizes Three.js performance — instancing, draw call reduction, LOD, frustum culling, geometry merging, texture compression, Stats.js profiling, and GPU debugging. Use when the user asks about performance, FPS, draw calls, instancing, optimization, lag, stuttering, or profiling a Three.js scene. Trigger keywords: performance, fps, draw calls, instancing, InstancedMesh, LOD, profiling, optimization, Stats.

Integrates Three.js in React using React Three Fiber (R3F), @react-three/drei, and @react-three/postprocessing. Use when the user asks about Three.js in React, React Three Fiber, R3F, @react-three/drei, useFrame, useThree, Canvas setup, or 3D in React components. Trigger keywords: React Three Fiber, R3F, drei, useFrame, useThree, Canvas, 3D React, @react-three.

Integrates physics engines with Three.js — cannon-es, Rapier (WASM), and Ammo.js. Covers rigid bodies, constraints, collision detection, character controllers, and physics-visual sync. Use when the user asks about physics, collisions, rigid bodies, gravity, constraints, joints, or physics simulation. Trigger keywords: physics, cannon-es, rapier, ammo.js, rigid body, collision, gravity, constraint, character controller.

Adds post-processing effects to Three.js scenes using EffectComposer — bloom, SSAO, SMAA, depth of field, motion blur, and custom passes. Also covers pmndrs/postprocessing for React Three Fiber. Use when the user asks about post-processing, bloom, glow, SSAO, depth of field, vignette, chromatic aberration, or visual effects pipeline. Trigger keywords: post-processing, bloom, glow, EffectComposer, SSAO, depth of field, vignette, chromatic aberration, UnrealBloom.

Writes custom GLSL shaders in Three.js using ShaderMaterial and RawShaderMaterial — uniforms, varyings, vertex displacement, fragment effects, noise, fresnel, dissolve, and shader chunk injection. Use when the user asks about custom shaders, GLSL, ShaderMaterial, uniforms, vertex shaders, fragment shaders, noise effects, or GPU-based effects. Trigger keywords: shader, GLSL, ShaderMaterial, uniform, vertex shader, fragment shader, noise, fresnel, dissolve, GPU effect.

Loads 3D assets in Three.js — GLTFLoader, DRACOLoader, KTX2Loader, TextureLoader, FontLoader, AudioLoader, LoadingManager, and async/await loading patterns. Use when the user asks about loading 3D models, GLTF, GLB, OBJ, textures, fonts, audio, or asset management. Trigger keywords: GLTFLoader, load model, GLTF, GLB, DRACOLoader, TextureLoader, LoadingManager, async load, asset.

Configures Three.js cameras and controls — PerspectiveCamera, OrthographicCamera, OrbitControls, FlyControls, PointerLockControls, and first-person setup. Use when the user asks about cameras, controls, orbit, fly, first-person, camera movement, or viewport setup. Trigger keywords: camera, OrbitControls, FlyControls, PointerLockControls, perspective, orthographic, first person, viewport, FOV.

Adds spatial and non-spatial audio to Three.js scenes using AudioListener, Audio, PositionalAudio, AudioAnalyser, and AudioLoader. Use when the user asks about 3D audio, spatial sound, positional audio, audio visualization, background music, or Web Audio API integration. Trigger keywords: audio, sound, PositionalAudio, AudioListener, AudioAnalyser, spatial audio, 3D sound, music visualization.

Animates Three.js objects using AnimationMixer, AnimationClip, keyframe tracks, morph targets, skeletal animation, and GSAP integration. Use when the user asks about animations, AnimationMixer, play/pause animations, keyframes, GLTF animations, morph targets, bones, or GSAP with Three.js. Trigger keywords: animation, AnimationMixer, AnimationClip, keyframe, morph target, skeleton, bones, GSAP, tween, play animation.

Configures Three.js lights — AmbientLight, DirectionalLight, PointLight, SpotLight, RectAreaLight, shadows, HDR environment lighting, and light probes. Use when the user asks about lighting, shadows, light setup, HDR, environment maps for lighting, or realistic rendering. Trigger keywords: light, lighting, shadow, DirectionalLight, PointLight, SpotLight, ambient, HDRI, environment.

Configures Three.js materials — MeshStandardMaterial, MeshPhysicalMaterial, PBR pipeline, texture maps (color, normal, roughness, metalness, AO, emissive, environment). Use when the user asks about materials, textures, PBR, shading, opacity, transparency, or material properties. Trigger keywords: material, texture, PBR, roughness, metalness, normal map, emissive, transparent, MeshStandardMaterial.

Creates and manipulates Three.js geometry — built-in primitives, BufferGeometry, custom geometry with attributes, normals, UVs, indexed and non-indexed meshes. Use when the user asks about geometry, shapes, BufferGeometry, custom vertices, normals, UVs, or mesh topology. Trigger keywords: geometry, BufferGeometry, vertices, normals, UVs, mesh topology, custom shape.

Sets up Three.js renderer, scene, WebGL context, animation loop, and resize handling. Use when the user asks to create a 3D scene, set up Three.js from scratch, initialize WebGL, create a render loop, or configure a renderer. Trigger keywords: three.js, threejs, WebGL, 3D scene, renderer, requestAnimationFrame.