`rig.vr.joint`

v1.0.0 · stable maturity: draft 2 fields 1 required

Fields

Field	Type		Meaning
`name`	enumpalm · wrist · thumb-metacarpal · thumb-proximal · thumb-distal · thumb-tip · index-metacarpal · index-proximal · index-intermediate · index-distal · index-tip · middle-metacarpal · middle-proximal · middle-intermediate · middle-distal · middle-tip · ring-metacarpal · ring-proximal · ring-intermediate · ring-distal · ring-tip · little-metacarpal · little-proximal · little-intermediate · little-distal · little-tip	required	Joint in the standard hand set
`radius`	number0 – *	optional	Optional. Sphere radius, scene units. Absent = not measured

One joint of a rig.vr.hand. Format when present.

Pose is rig.spatial.transform. Parent is rig.spatial.relationship.

name is palm, wrist, or a finger joint: thumb, index, middle, ring, little, each with metacarpal, proximal, distal, tip, and (except the thumb) intermediate.

Joint	Parent
`wrist`	the hand entity
`palm`	`wrist`
`thumb-metacarpal`, `index-metacarpal`, `middle-metacarpal`, `ring-metacarpal`, `little-metacarpal`	`wrist`
`*-proximal`	that finger's metacarpal
`*-intermediate`	that finger's proximal
`*-distal`	that finger's intermediate, or `thumb-proximal` for the thumb
`*-tip`	that finger's distal

The thumb has no intermediate. A missing joint in the chain: parent to the nearest present ancestor, then the hand.

Confidence and the raw sample history stay in the host.

JSON Schema

Resolves at https://rig.works/schemas/rig.vr.joint.schema.json — raw file.

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://rig.works/schemas/rig.vr.joint.schema.json",
  "title": "rig.vr.joint",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "name": {
      "type": "string",
      "enum": [
        "palm",
        "wrist",
        "thumb-metacarpal",
        "thumb-proximal",
        "thumb-distal",
        "thumb-tip",
        "index-metacarpal",
        "index-proximal",
        "index-intermediate",
        "index-distal",
        "index-tip",
        "middle-metacarpal",
        "middle-proximal",
        "middle-intermediate",
        "middle-distal",
        "middle-tip",
        "ring-metacarpal",
        "ring-proximal",
        "ring-intermediate",
        "ring-distal",
        "ring-tip",
        "little-metacarpal",
        "little-proximal",
        "little-intermediate",
        "little-distal",
        "little-tip"
      ]
    },
    "radius": {
      "type": "number",
      "minimum": 0
    }
  },
  "required": [
    "name"
  ],
  "x-rig-maturity": "draft"
}

Seen in

vr-room.json