Rect Animation (Android)

[Rogo]

can i do a rect (); animate like that? I tried it for 3 hours but it doesn’t quite work

[Rogo]

I need this without lags

and instead of the right I wanted to take an image like this:

[paulgoux]

I think what you are trying to achieve is oscilating motion.

Please see

3.6 Graphing Sine Wave - Nature of Code

Coding Challenge #159: Simple Pendulum Simulation