node.OMI_physics_body.motion.schema.json

{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "$id": "node.OMI_physics_body.motion.schema.json",
    "title": "OMI_physics_body Node Motion Property",
    "type": "object",
    "description": "Parameters describing how a node's transform should be driven by physics simulation.",
    "allOf": [ { "$ref": "glTFProperty.schema.json" } ],
    "properties": {
        "type": {
            "type": "string",
            "description": "The motion type of this physics body as a string.",
            "enum": [
                "static",
                "kinematic",
                "dynamic"
            ]
        },
        "mass": {
            "type": "number",
            "description": "The mass of this physics body in kilograms.",
            "default": 1.0
        },
        "centerOfMass": {
            "type": "array",
            "description": "The center of mass of the object in local space.",
            "items": {
                "type": "number"
            },
            "minItems": 3,
            "maxItems": 3,
            "default": [0.0, 0.0, 0.0]
        },
        "inertiaDiagonal": {
            "type": "array",
            "description": "The inertia around principle axes in kilogram meter squared. If zero or not specified, the inertia should be calculated automatically.",
            "default": [0.0, 0.0, 0.0]
        },
        "inertiaOrientation": {
            "type": "array",
            "description": "The inertia orientation as a Quaternion. If not specified, the inertia is not rotated.",
            "default": [0.0, 0.0, 0.0, 1.0]
        },
        "linearVelocity": {
            "type": "array",
            "description": "The initial linear velocity of the body in meters per second.",
            "default": [0.0, 0.0, 0.0]
        },
        "angularVelocity": {
            "type": "array",
            "description": "The initial angular velocity of the body in radians per second.",
            "default": [0.0, 0.0, 0.0]
        },
        "gravityFactor": {
            "type": "number",
            "description": "A multiplier applied to the global acceleration due to gravity.",
            "default": 1.0
        },
        "extensions": { },
        "extras": { }
    },
    "required": [
        "type"
    ]
}