| { |
| "$schema": "https://json-schema.org/draft/2020-12/schema", |
| "title": "3D asset", |
| "description": "One line of metadata.jsonl: one asset, stored in the folder named by its id.", |
| "type": "object", |
| "additionalProperties": false, |
| "required": [ |
| "id", |
| "file_name", |
| "title", |
| "category", |
| "file", |
| "format", |
| "size_bytes", |
| "sha256", |
| "triangles", |
| "author", |
| "source_url", |
| "licence", |
| "modified" |
| ], |
| "dependentRequired": { |
| "length_m": [ |
| "size_source" |
| ], |
| "width_m": [ |
| "size_source" |
| ], |
| "height_m": [ |
| "size_source" |
| ] |
| }, |
| "properties": { |
| "id": { |
| "type": "string", |
| "pattern": "^[a-z0-9_]+$", |
| "description": "Folder name; unique." |
| }, |
| "file_name": { |
| "type": "string", |
| "pattern": "^[a-z0-9_]+/preview\\.png$", |
| "description": "Preview image: <id>/preview.png. The Hub shows it beside the row." |
| }, |
| "title": { |
| "type": "string", |
| "minLength": 1, |
| "description": "The author's title." |
| }, |
| "category": { |
| "type": "string", |
| "minLength": 1, |
| "description": "What the object is, lower case: 'general cargo ship', 'lateral mark'." |
| }, |
| "tags": { |
| "type": "array", |
| "items": { |
| "type": "string", |
| "pattern": "^[a-z0-9-]+$" |
| }, |
| "uniqueItems": true, |
| "description": "Free filters: 'containers', 'photogrammetry', 'low-poly'." |
| }, |
| "description": { |
| "type": "string" |
| }, |
| "length_m": { |
| "type": "number", |
| "exclusiveMinimum": 0, |
| "description": "Real overall length, metres." |
| }, |
| "width_m": { |
| "type": "number", |
| "exclusiveMinimum": 0, |
| "description": "Real overall width (beam), metres." |
| }, |
| "height_m": { |
| "type": "number", |
| "exclusiveMinimum": 0, |
| "description": "Real overall height, lowest to highest point (keel to top for a vessel), metres." |
| }, |
| "size_source": { |
| "type": "string", |
| "minLength": 1, |
| "description": "How the real size is known: a reference object, a standard part measured in the mesh, or native units." |
| }, |
| "file": { |
| "type": "string", |
| "pattern": "^[a-z0-9_]+/[^/]+$", |
| "description": "Path of the main file in the repo: <id>/<name>." |
| }, |
| "format": { |
| "enum": [ |
| "glb", |
| "gltf", |
| "fbx", |
| "obj", |
| "usdz" |
| ] |
| }, |
| "front_axis": { |
| "enum": [ |
| "+z", |
| "-z", |
| "+x", |
| "-x" |
| ], |
| "default": "+z", |
| "description": "Axis of the file the object's front (a vessel's bow) points along. glTF's convention is +z; set it only when the file departs from it." |
| }, |
| "size_bytes": { |
| "type": "integer", |
| "exclusiveMinimum": 0 |
| }, |
| "sha256": { |
| "type": "string", |
| "pattern": "^[0-9a-f]{64}$" |
| }, |
| "triangles": { |
| "type": "integer", |
| "exclusiveMinimum": 0 |
| }, |
| "textures": { |
| "type": "integer", |
| "minimum": 0, |
| "description": "Number of images." |
| }, |
| "texture_max_px": { |
| "type": "integer", |
| "exclusiveMinimum": 0, |
| "description": "Longest side of the largest image." |
| }, |
| "author": { |
| "type": "string", |
| "minLength": 1 |
| }, |
| "source_url": { |
| "type": "string", |
| "pattern": "^https://", |
| "description": "Page the asset was taken from." |
| }, |
| "licence": { |
| "enum": [ |
| "CC0-1.0", |
| "CC-BY-3.0", |
| "CC-BY-4.0" |
| ], |
| "description": "SPDX identifier." |
| }, |
| "modified": { |
| "type": "boolean", |
| "description": "True if the file differs from what the source offers." |
| }, |
| "added": { |
| "type": "string", |
| "format": "date" |
| } |
| } |
| } |
|
|
