[Closed] #preRenderEval

#preRenderEval isn’t working correctly for me.

What I’m doing is hiding objects and unhiding objects on a per frame basis at rendertime via a callback.

So at frame 1 I want only the object “Sphere01” visible where as at frame 2 I want “Sphere01” and “Box01” visible, and frame 3 the all of the objects visible (box, sphere, plane).

This sounds easy and using registerTimeCallback() it executes flawlessly in the viewport, but at rendertime, it prints out everything correctly including the current frame, the object nodes and the sort It’s not hiding or unhiding them.

Am I missing an updateObject() function or something?

To recreate:
Create a scene with a plane, box, and sphere (all named default Sphere01…Box01…Plane01)

execute the following script:

global setRenderCallback

fn setRenderCallback = (
	local curTimeInt = ((currentTime as integer)/TicksPerFrame)
	
	format "Frame: %
" curTimeInt
	
	for o in objects do (
		format "   hiding: %
" o.name
	)
	
	case curTimeInt of (
		1: unhide $Sphere01
		2: unhide $Box01
		3: unhide $Plane01
	)
)

callbacks.removeScripts id:#helpMePlease
callbacks.addScript #preRenderEval "setRenderCallback()" id:#helpMePlease

the current frame and object name is listed in the listener window, but nothing happens.

Thanks for your help,
Colin