Math Question, Ratio relative to middle of range

I have a max and min value that goes up and down no problem.
I need a ratio where 1 is the middle value and 0 is the min and the max.
let's say min is -90 and max is 90 but please take into account I need to be able to plug any min and max in

 

I don't really understand what you're trying to get...
middle = (min + max) / 2, whatever value you have as min and max.

Or do you want some normalized values (between 0 and 1, 0.5 being the middle) ?

 

I think an absolute sine will do it.
I might be wrong, I'm interested in knowing

 

this might work:

Code (CSharp):

1. float remap (float min, float max, float value)
2.     {
3.         float total = max - min;
4.         float ratio = value - min;
5.         float returnValue = 1 - Mathf.Abs(((ratio / total) * 2) - 1);
6.         return returnValue;
7.     }

 

Or you could just use Mathf.Lerp... isn't that what it's for?

 

if (PCM.xRotator.RotationX > 0) {
vertRatio = 1 - (PCM.xRotator.RotationX / PCM.xRotator.maxX);
} else if (PCM.xRotator.RotationX < 0) {
vertRatio = 1 - (PCM.xRotator.RotationX / PCM.xRotator.minX);
} else {
vertRatio = 1.0f;
}

 

//t = value from 0.0 to 1.0
//0.0 = min, 0.5 = max, 1.0 = min
float range = max - min;
float value = min + Mathf.PingPong(range * (t * 2), range);