You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
13 lines
602 B
13 lines
602 B
// `Math.scale` method implementation
|
|
// https://rwaldron.github.io/proposal-math-extensions/
|
|
module.exports = Math.scale || function scale(x, inLow, inHigh, outLow, outHigh) {
|
|
var nx = +x;
|
|
var nInLow = +inLow;
|
|
var nInHigh = +inHigh;
|
|
var nOutLow = +outLow;
|
|
var nOutHigh = +outHigh;
|
|
// eslint-disable-next-line no-self-compare -- NaN check
|
|
if (nx != nx || nInLow != nInLow || nInHigh != nInHigh || nOutLow != nOutLow || nOutHigh != nOutHigh) return NaN;
|
|
if (nx === Infinity || nx === -Infinity) return nx;
|
|
return (nx - nInLow) * (nOutHigh - nOutLow) / (nInHigh - nInLow) + nOutLow;
|
|
};
|
|
|