01.08.2018, 13:36
For the rotation to work the object also needs to be moved, unfortunately.
So, if you want to rotate an object for 1 second, you need to move it by (for example) 0.1 meters at a speed of 0.1 m/s. If you want it to rotate for 3 seconds, move it by 0.3 meters at a speed of 0.1 m/s or 0.1 meters at a speed of 0.03333 m/s.
Just choose the smallest distance possible (so it doesn't become visible) and use the formula t = d/s so you can easily calculate the speed needed for it to move t seconds.
So, if you want to rotate an object for 1 second, you need to move it by (for example) 0.1 meters at a speed of 0.1 m/s. If you want it to rotate for 3 seconds, move it by 0.3 meters at a speed of 0.1 m/s or 0.1 meters at a speed of 0.03333 m/s.
Just choose the smallest distance possible (so it doesn't become visible) and use the formula t = d/s so you can easily calculate the speed needed for it to move t seconds.