koobas.hobune.stream
Mahtf.inverselerp
Hey so i have a simple question
can i get mathf.inverselerp to return a value between -1 and 1 instead of 0 and 1?
Thanks ~Scott
If you want to stretch out inverselerp so 0->-1, 0.5->0, and 1->1 use either tigertrussell's code or something similar to illogicalcrows (just replace lerp with inverselerp).
If you want to keep the accurate values but relax the clamp so InverseLerp is capable of return -1 in instances such as InverseLerp(0, 2, -2) use maccabbe's code.
Best Answer
Multiply by 2 and subtract 1. A little less precise, but it will pretty much never matter. Overall this kind of conversion is a common pattern.
value = 2 * Mathf.lerp(from, to, t) - 1;
Would this work?
float originalLerp = Mathf.InverseLerp(a, b, x);
float specialLerp = Mathf.Lerp(-1, 1, originalLerp);
I think specialLerp holds what you're looking for.
You probably ment:
float specialLerp = $$anonymous$$athf.Lerp(-1, 1, originalLerp);
Lerp(from, to, x) = from(1-x)+to*x
lerp-from=x(to-from)
(lerp-from)/(to-from)=x
so define your own function as
public float InverseLerp(float from, float to, float value){
if(to!=from){
return Mathf.Clamp((value-from)/(to-from), -1f, 1f);
}
return 0;
}
