Rotation promlems past 90 and 270

Questions & Answers
1

Problem with rotation and I can’t seem to fix it. Here is what I am using:

function Update()
{
transform.rotation.x += 20* Time.deltaTime;
}

or

function Update()
{
transform.RotateAround (transform.position, Vector3.right, 20 * Time.deltaTime);
}

What happens with the first one is it gets to a point and stops moving. The numbers on rotation x seem to stick around 0-1 without actually stopping. The rotate around script animated the object correctly, but the rotation of x goes up from 270 to 90, then counts back down to 270 after flipping the Y and Z rotation from 0 to 180.
If I rotate manually in play mode and switch to the scene view to rotate using tools, it does the same thing.
If I am trying to use something to match the rotation, it’s fine for half the rotation on the x axis, but once it gets past the 90 and starts counting back down it messes it all up.
any idea why it does this?

2

Transform.rotation is a 4D quaternion, and rotation.x does not correspond to the x axis. Use Transform.Rotate instead. There is more than one valid way to represent a quaternion as euler angles (e.g. 0,0,0 is identical to 180,180,180), so reading one axis by itself is somewhat meaningless.

3

Tried to put it in an empty object an then rotate in local space:

transform.Rotate(Vector3.right * Time.deltaTime *20, Space.Self);

That should do it.

4

Hello ,
try to fixe your zone of work , 0 to 90 0 to 180 or 0 to 360

and se ur variable like this

alpha =((transform.eulerAngles.x%360)%180)%90;

So here the % have a role to find the angle betwen 0 and 90 180 360 …

2kpi in math