--- name: threejs-animation description: Three.js animation - keyframe animation, skeletal animation, morph targets, animation mixing. Use when animating objects, playing GLTF animations, creating procedural motion, or blending animations. risk: critical source: community date_added: "2026-09-04" --- # Three.js Animation ## Detailed Guide Read [the detailed guide](references/detailed-guide.md) before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely. ## When to Use - You need to animate objects, rigs, morph targets, or imported GLTF animations in Three.js. - The task involves mixers, clips, keyframes, procedural motion, or animation blending. - You are building motion behavior in a Three.js scene rather than just static rendering. ## Limitations - Use this skill only when the task clearly matches the scope described above. - Do not treat the output as a substitute for environment-specific validation, testing, or expert review. - Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.