import {default as value} from "./value.js"; | |
export default function piecewise(interpolate, values) { | |
if (values === undefined) values = interpolate, interpolate = value; | |
var i = 0, n = values.length - 1, v = values[0], I = new Array(n < 0 ? 0 : n); | |
while (i < n) I[i] = interpolate(v, v = values[++i]); | |
return function(t) { | |
var i = Math.max(0, Math.min(n - 1, Math.floor(t *= n))); | |
return I[i](t - i); | |
}; | |
} | |