lerp - nodef/extra-math GitHub Wiki
Linearly interpolate a number between two numbers.
function lerp(x, y, t)
// x: start number
// y: stop number
// t: interpolant ∈ [0, 1]
const xmath = require('extra-math');
xmath.lerp(80, 320, 0.8);
// → 272
xmath.lerp(80, 320, 0.20);
// → 128
xmath.lerp(80, 320, 0.32);
// → 156.8