The point to draw, as [x, y, z].
OptionalopacityHow opaque the point is, from 0 (invisible) to 1 (solid).
OptionalsizeSize of the drawn point, in model units.
OptionalcoloursColor of the point as a hex string such as #ff0000; a list of strings is also
accepted.
OptionalupdatableWhen true, the drawn mesh is built so its position can be changed later without redrawing.
OptionalpointA mesh drawn earlier for this point; when given it is updated in place instead of a new one being made.
One point and how to draw it: its size, color and opacity, and whether the drawn mesh will be updated later.