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Gets the zoom level range for the active sphere, passes it to the optional callback function (if provided), and returns it. |
See sendData for how to set these values.
Parameters:
callback
(function): (OPTIONAL) A callback function to execute. It will be passed an object with the following attributes automatically:cameraZoomMin
(number): The minimum valid field of view for the current spherecameraZoomMax
(number): The maximum valid field of view for the current sphere
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