Billboards track


I have the traced scene which works well, I would like to put a 3D object in front of the actor, I use the billboards system which masks the scene for me.

My problem occurs when I move the camera that the billboards lose tracking.


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Note, that you are actually tracking the camera and not the billboard. When you switch to the Use Billboards option, you need to determine the position of the billboard's plane in the virtual world. Since there is no straightforward way to tell where is the talent compared to your camera in the real world, you have to set a static position for the billboard by default.
But you also have 2 options for tracking the billboard instead of the static position, more on it here:

Warmest regards,