Rotating object stutters

Archived Forums Questions & Answers
1

Hello.
I have some problems with a simple rotating object. It stutters often while spinning around at one axis. I use Time.deltaTime but i have always this stuttering in unity editor, in windows build, web build and on an ipad.
The c# script i use is simply following:

void Update()
{
    transform.Rotate(Vector3.forward * rotationSpeed * Time.deltaTime);
}

I found so many examples and answers where this is the given way to mak some rotating object, but when i try it it hangs every now and then for a frame or so. Not on the same spot mostly on different positions.
What could be the problem?

Maybe other things you have going on. If you have Pro, look in the profiler.

 –

Classic reason would be a garbage collection spike - if you were allocating memory somewhere else

 –

I tried it in a completely empty Project. Just the script, my rotating object and a texture for it. I dont't have pro unfortunately.

 –

1 Answer

1
2

I think its because you are using an undesired method.
transform.Rotate places your object at the exact position, without making any smooth transition or interpolation.

Instead you should try use Quaternion.Slerp

No, the code is using Transform.Rotate. It's perfectly fine. There's no such thing as transform.Rotation anyway.

 –

Oh yeah, transform.Rotate*. My thought was, if the rotationSpeed becamse too big a value, the object would stutter from frame to frame without a proper transition.

 –

My Problem with Slerp is, that i dont have a given time how long the Rotation of the object runs. I think when i use the slerp method to break the Rotation in smaller parts, say 90degree. Then it would sometimes hang or jump when i reach or overcome the next endposition where i would start the next slerp cycle? Or are im thinking something wrong?

 –