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3D Tiles JSON Schema

Parts of 3D Tiles, such as tileset.json, Feature Table, and Batch Table, are represented with JSON. The JSON schema is defined using JSON Schema draft v4 in schema subdirectories.

Usage

A JSON object can be validated against the schema using a JSON schema validator such as Ajv: Another JSON Schema Validator, which supports JSON Schema draft v4. A command-line tool is available on npm as ajv-cli.

Validating against the schema does not prove full compliance with the 3D Tiles specification since not all requirements can be represented with JSON schema. For full compliance validation, see 3d-tiles-tools.

Example

  1. Install : npm install ajv-cli -g
  2. Validate : ajv -s schema/i3dm.featureTable.schema.json -r schema/featureTable.schema.json -d examples/i3dm.featureTable.json
  • The -s flag points to the schema you want to use for validation.
  • Multiple -r flags includes any external dependencies for the schema.
  • The -d flag points to the JSON to validate.