{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://visualspec.dev/schema/1.0/modules/three-d.schema.json",
  "title": "Three D",
  "description": "3D scene intent, geometry instances, LOD, skeletons, skins, rigs and morph targets.",
  "$defs": {
    "joint": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "name": {
          "type": "string",
          "minLength": 1
        },
        "parentRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "transform": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/geometry.schema.json#/$defs/transform"
        },
        "inverseBindMatrix": {
          "type": "array",
          "items": {
            "type": "number"
          },
          "minItems": 16,
          "maxItems": 16
        }
      },
      "required": [
        "id"
      ],
      "additionalProperties": false
    },
    "skeleton": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "joints": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/three-d.schema.json#/$defs/joint"
          },
          "minItems": 1
        },
        "rootRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "extensions": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/extensions"
        }
      },
      "required": [
        "id",
        "joints"
      ],
      "additionalProperties": false
    },
    "mesh": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "assetRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "geometry": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/geometry.schema.json#/$defs/geometry"
        },
        "materialRefs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "skeletonRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "skin": {
          "type": "object",
          "properties": {
            "jointRefs": {
              "type": "array",
              "items": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "uniqueItems": true
            },
            "weightsAssetRef": {
              "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
            },
            "bindPoseAssetRef": {
              "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
            }
          },
          "additionalProperties": false
        },
        "morphTargets": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "id": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "name": {
                "type": "string",
                "minLength": 1
              },
              "assetRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "weight": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              }
            },
            "required": [
              "id"
            ],
            "additionalProperties": false
          }
        },
        "lod": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "distance": {
                "type": "number",
                "minimum": 0
              },
              "assetRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "meshRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "screenCoverage": {
                "type": "number",
                "minimum": 0,
                "maximum": 1
              }
            },
            "required": [
              "distance"
            ],
            "additionalProperties": false
          }
        },
        "instanceRefs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "extensions": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/extensions"
        }
      },
      "required": [
        "id"
      ],
      "additionalProperties": false
    },
    "rig": {
      "type": "object",
      "properties": {
        "id": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "skeletonRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "assetRef": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
        },
        "controls": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "id": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              },
              "jointRefs": {
                "type": "array",
                "items": {
                  "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
                },
                "uniqueItems": true
              },
              "kind": {
                "enum": [
                  "fk",
                  "ik",
                  "look-at",
                  "constraint"
                ]
              },
              "targetRef": {
                "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
              }
            },
            "required": [
              "id",
              "kind"
            ],
            "additionalProperties": false
          }
        },
        "extensions": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/extensions"
        }
      },
      "required": [
        "id"
      ],
      "additionalProperties": false
    },
    "threeD": {
      "type": "object",
      "properties": {
        "sceneRefs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "meshes": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/three-d.schema.json#/$defs/mesh"
          }
        },
        "skeletons": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/three-d.schema.json#/$defs/skeleton"
          }
        },
        "rigs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/three-d.schema.json#/$defs/rig"
          }
        },
        "assetRefs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "animationRefs": {
          "type": "array",
          "items": {
            "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/id"
          },
          "uniqueItems": true
        },
        "extensions": {
          "$ref": "https://visualspec.dev/schema/1.0/modules/common.schema.json#/$defs/extensions"
        }
      },
      "additionalProperties": false
    }
  },
  "$ref": "#/$defs/threeD"
}