Emulating a physical dial

Questions & Answers
1

Hello,

I am trying to replicate a physical dial/potentiometer like that which would be found on a synthesizer. So far I am able to rotate a rigidbody cylinder around freely on its x-axis with the z and y locked using the ‘drag rigid body’ script, but I need to limit its rotation to something like -45 to 45, so it has a ‘min’ and ‘max’ value which it can not exceed instead of spinning endlessly.

ANY help or advice would be appreciated,
thanks

2

You can do something something simple in your script like this to limit the rotation…

float currentRotation;

void FixedUpdate()
{
  currentRotation = rigidbody.transform.eulerAngles.x;

  if(currentRotation < -45)
    rigidbody.transform.eulerAngles.x = -45;
  else if(currentRotation > 45)
    rigidbody.transform.eulerAngles.x = 45; 
}

this code is not tested but you get the idea…

3

I’m using the script you posted Meltdown (with javascript modifications) and the lower boundary works, but as the cylinder rotates back up to 0 it just keeps snapping to -100. So basically I can only rotate my dial left, then it keeps snapping back to the lower boundary value. The script looks like this.

    var currentRotation : float;

function FixedUpdate(){
 
currentRotation = rigidbody.transform.eulerAngles.z;
Debug.Log(currentRotation);

  if(currentRotation < -100)
    rigidbody.transform.eulerAngles.z = -100;
  else if(currentRotation > 100)
    rigidbody.transform.eulerAngles.z = 100; 
}