Smart Client active button When Zoom with normal camera

Base on the milestone smart client

https://youtu.be/sWXZIS_RrCw

there are function to move the zoom selection in normal camera, when click on left,right,up ,down arrow button.

Could you give the sample code for the way to do it or algorithm to get do this. As in imageviewWpf we see there are PTZCenter does you guys use this to control the arrow button when in normal camera mode, if so could you give us some advice to use it or the algorithm to calculate it thanks

The Virtual Joystick is not open, the code for it has not been documented or shared. Unfortunately I cannot give you the code from the Virtual Joystick.