360 Secure SkillHub
360 安全技能中心

threejs-camera

该 Skill 面向 Three.js 桌面相机配置，说明 PerspectiveCamera、OrthographicCamera、CubeCamera 等类型的投影矩阵、aspect、FOV、近远裁剪面及动态环境贴图要点，并给出 resize、反射更新与多视图问题的参考建议；WebXR、阴影相机与后期处理相机不在范围内。

full-stack-skills
热度 0.00
最近更新 2026-10-19 03:40:33
分类：开发依赖：纯提示词应用场景：概念解释 / 调试排错 / 工作流

安装技能

复制下面的话术发给你的 Agent，它会通过 secure-skills 检索并安装该技能。

执行命令安装此 skill： npx secure-skills-cli add full-stack-skills/threejs-skills/threejs-camera
Metadata
name
threejs-camera
license
Apache-2.0
description
three.js cameras: Camera base, PerspectiveCamera, OrthographicCamera, CubeCamera, ArrayCamera, StereoCamera; projection matrices, aspect, FOV, orthographic frustum sizes, near/far planes, and dynamic environment maps with CubeCamera. Use when placing views, rendering reflections, or multi-view splits; for XR projections and eye matrices use threejs-webxr; for post pass camera tricks use threejs-postprocessing alongside threejs-renderers.

When to use this skill

ALWAYS use this skill when the user mentions:

  • Switching perspective vs orthographic, fov, aspect, zoom, near, far
  • CubeCamera for real-time environment maps or reflections (update rate caveats)
  • ArrayCamera/StereoCamera for multi-view or stereo off-axis projection (non-XR)

IMPORTANT: camera vs webxr vs post

Topic Skill
Standard desktop projection threejs-camera
XR reference spaces, IPD threejs-webxr
Offscreen pass cameras inside composer threejs-postprocessing

Trigger phrases include:

  • "PerspectiveCamera", "OrthographicCamera", "CubeCamera", "aspect", "near", "far"
  • "透视相机", "正交", "立方体相机"

How to use this skill

  1. Perspective: set aspect = width/height; update on resize (threejs-renderers example workflow).
  2. Orthographic: define left/right/top/bottom in world units for CAD/2.5D views.
  3. Near/far: balance depth precision vs containing scene bounds; relate to fog (threejs-scenes).
  4. CubeCamera: position at reflection probe; call update when scene static enough; use render target outputs per docs.
  5. Stereo/Array: advanced; cite docs for eye parameters; defer XR to threejs-webxr.
  6. Projection matrix: call updateProjectionMatrix() after parameter edits.
  7. Helpers: CameraHelper lives in threejs-helpers.

See examples/workflow-perspective-resize.md.

Doc map (official)

Docs section Representative links
Cameras (index) https://threejs.org/docs/#Cameras
Cameras https://threejs.org/docs/Camera.html
Perspective https://threejs.org/docs/PerspectiveCamera.html
Orthographic https://threejs.org/docs/OrthographicCamera.html
Cube https://threejs.org/docs/CubeCamera.html
Multi-view https://threejs.org/docs/ArrayCamera.html
Stereo (non-XR) https://threejs.org/docs/StereoCamera.html

Scope

  • In scope: Core camera classes and parameters; cube/array/stereo overview.
  • Out of scope: WebXR reference spaces, eye matrices, session lifecycle (threejs-webxr); shadow map camera tuning (threejs-lights); pass-internal cameras in composer (threejs-postprocessing).

Common pitfalls and best practices

  • Wrong aspect after resize stretches image—always sync with canvas.
  • Too small near hurts depth precision in large worlds.
  • CubeCamera every frame is expensive—throttle for performance.

Documentation and version

Camera parameters and CubeCamera update behavior follow the Cameras section of three.js docs. WebXR uses different projection paths—hand off to threejs-webxr when the user mentions headsets or reference spaces.

Agent response checklist

When answering under this skill, prefer responses that:

  1. Link PerspectiveCamera, OrthographicCamera, or CubeCamera as relevant.
  2. Pair resize with threejs-renderers setSize / DPR patterns when relevant.
  3. Route XR/WebXRManager questions to threejs-webxr after one-line renderer mention.
  4. Mention updateProjectionMatrix() after intrinsic changes.
  5. Use threejs-helpers CameraHelper for shadow frustum debug when discussing lights.

References

Keywords

English: perspectivecamera, orthographiccamera, cubecamera, projection, aspect, near, far, three.js

中文： 相机、透视、正交、投影、近裁剪、远裁剪、CubeCamera、three.js