使い方
- インストールコマンドをコピーし、自分の環境へ導入する前にソースを確認します。
- 必要なツール、認証情報、対応環境を原文で確認します。
- 入力と成果物を指定し、出力を資料と照合します。
npx skills add https://github.com/cesartevisual/threejs-skills --skill threejs-scene開始前の確認
- 導入にはモデル契約、API枠、ファイルへのアクセス許可は含まれません。
- スター数や導入数は活動の指標であり、独立した品質・安全性試験ではありません。
見出し、例、コード、表、リンク、参照画像を含む原文を表示しています。
Scenes, Cameras, and Math
Use the project's installed versions and existing architecture. These instructions supplement the user's task; they do not authorize unrelated changes or external actions.
Inspect the host element size, renderer ownership, world scale, handedness, up axis, and camera type before changing the scene. Prefer a single renderer for one experience; use viewports/scissors when multiple views genuinely benefit from shared resources.
Separate imported model transforms from interaction pivots using groups. Distinguish local and world coordinates; update world matrices before synchronous bounds or coordinate queries when transforms just changed. Use quaternion interpolation for orientations and reusable vectors in hot paths. Avoid repeatedly converting between Euler angles and quaternions.
Fit a perspective camera against object bounds and both horizontal and vertical field of view; fitting only height can crop a wide subject. Choose a positive near plane and useful far plane for perspective depth precision. Orthographic cameras may use a zero near plane. Update the projection matrix after projection changes.
Size from the canvas container with ResizeObserver, skip zero dimensions, and keep CSS size separate from drawing-buffer size. Apply a deliberate pixel-ratio budget. Update camera, renderer, and size-dependent render targets together. Do not overwrite layout CSS with renderer sizing.
Use one render-loop owner. setAnimationLoop integrates with XR; an existing framework or requestAnimationFrame loop can be valid outside XR. Stop the loop, disconnect observers, remove listeners, and release owned GPU resources on teardown. Renderer disposal alone does not dispose scene resources.
Verify a non-square container, mobile orientation, hidden-to-visible transitions, repeated mounting, and framing of unusually wide or tall assets.
API reference
Consult the official documentation for exact signatures and revision-specific behavior. If documentation access is unavailable, inspect installed types/source and state any remaining uncertainty.
