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A value indicating the visibility of an object based on the distance to the camera, specified as two values [NearDistance, FarDistance]. If the array has two elements, the value is constant. If it has three or more elements, they are time-tagged samples arranged as [Time, NearDistance, FarDistance, Time, NearDistance, FarDistance, ...], where Time is an ISO 8601 date and time string or seconds since epoch.

Type: array

Examples:

[ 150, 15000000 ]

[
    0, 150, 15000000,
    300, 10000, 15000000,
    600, 150, 15000000
]