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3d-object

Create a 3D object with three.js, inspect it from every angle in an interactive viewer, and download it as OBJ + MTL or GLB for use in other 3D applications.

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three.js model, downloadable as OBJ or GLB

asgeirtj/system_prompts_leaks

集成工具Blender

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适用场景

Create a 3D object and inspect it from every angle
Export a model for further editing in Blender
Review an object's silhouette and materials

包含的文件（1）

SKILL.md4.2 KB

SKILL.md（原文）

安装前可以查看交给 AI 代理的指令内容。

3D object

Model a 3D object the user can inspect from every angle and download, built with three.js and presented in the three_d_stage starter.

START by calling copy_starter_component with kind: "three_d_stage.js" — it is the whole viewer: studio lighting, ground shadow, orbit controls, an auto-framed camera, and a toolbar that downloads the object as OBJ + MTL or GLB. Read the copied file's usage block and follow its page skeleton exactly. You only write the model-building module script.

Build the page as plain HTML — a .html file with ordinary <script> tags — even when the project's other designs are .dc.html Design Components: DC restricts scripts to <helmet>, which races the stage's mount and can't host this skeleton.

Load three.js ONLY through this exact pinned import map, in <head>, before any module script. Do not change versions, URLs, or hashes, do not add other copies of three.js, and do not import addons beyond the three listed — the map is deliberately a closed set, so anything else fails to resolve rather than loading unverified:

Build the model programmatically, as a THREE.Group composed of named parts:

Compose primitives (BoxGeometry, CylinderGeometry, SphereGeometry, TorusGeometry, LatheGeometry, ExtrudeGeometry with Shape) before reaching for raw BufferGeometry; real objects decompose into far more primitives than you'd guess.
NAME every mesh and every material ("hull", "walnut", "brass") — the names become the o / usemtl entries in the exported OBJ and the node names in the GLB, which is what makes the download usable in Blender.
Use MeshStandardMaterial with a small curated palette (3-5 materials, shared across parts); set roughness/metalness deliberately. Textures don't survive the OBJ export — prefer geometry and material color over texture detail.
Model in real-world meters, y-up, centered on the origin, base resting at the lowest y. Offset deliberately coplanar faces by ~0.001 so nothing z-fights.
Curved surfaces need enough segments to read as smooth at full screen (32+ radial segments on feature surfaces), but don't tessellate what no one will see.

The stage's toolbar gives the user OBJ + MTL (universal, geometry + per-material colors) and GLB (the modern interchange format — keeps the part hierarchy and PBR materials; imports cleanly into Blender, Maya, Cinema 4D, Unity, Unreal). Those two are the export formats on offer — when the user asks for something else (FBX, USDZ, STEP), say plainly that the stage exports OBJ + MTL and GLB.

Iterate with screenshots: the stage keeps its last frame readable, so the ordinary screenshot tools capture the live canvas — no extra steps. After editing a module file, reload with show_html before screenshotting (the iframe caches already-loaded modules). Look at the object from the default framing and refine silhouette, proportion, and material separation — the silhouette carries the object.

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Maintain a private task list with deadlines, next steps, waiting parties, and blockers. Update progress and dependencies, merge duplicate items, and archive closed tasks so ongoing commitments stay clear and easy to follow.

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Record tasks and commitments with deadlines
Track pending replies and reasons work cannot proceed
Update task dependencies when prerequisites are completed