In smart client, user can add Camera Navigator to a view. Is there API in SDK to implement the functionality of camera navigator? Thanks.
There is no API for the camera navigator and it uses the positioning of cameras on the MAP plugin, which there is also no API available for, so you cannot implement the same.
However, you could instead use the geographical positions that can be allocated to cameras either in the Management Client or on the new Smart Map plugin and based on that make your own navigator.