Alright guys couple of days i am trying to mask an animation in a cube. I have tried booleans but they didnt work because objects that i want to mask are very complex models. and booleans just works very basic. I put a link here the video is very similar to mine.
0:35 (ground animation)
0:40 (cloud animation)
0:44 (map animation)
0:55 (sea animation)
i think these are all made of same idea. mine will be a subway so i need to know how can i do these type of masks