polate-js

Polate-js is a numerical and color interpolation utility for Javascript and Typescript.

Installation

Setup via NPM

npm install polate-js --save

Setup via Yarn

yarn add polate-js

Usage

Numerical interpolation

// import interpolate from 'polate-js';
import interpolate from "polate-js";
 
var valueToSolveFor = 1;
 
var interpolatedValue = interpolate(valueToSolveFor, {
    inputRange: [0, 2, 3],
    outputRange: [5, 7, 9],
    extrapolate: "clamp"
});
 
console.log(interpolatedValue); // ==> 6

Color interpolation

import interpolate from "polate-js";
 
var valueToSolveFor = 1;
 
var interpolatedValue = interpolate(valueToSolveFor, {
    inputRange: [0, 1],
    outputRange: ["#ff0000", "#ffffff"]
});
 
console.log(interpolatedValue); // ==> #ff8080

InterpolationConfig

Prop	Description	Default
inputRange	An array of any length of numbers to be used as the input range.
outputRange	A range of values to be mapped to the specified input range. It has to be the same length as the inputRange array. Provide an array of numbers to use a numerical interpolation technique, or an array of valid HEX or RGB colors to interpolate between colors.
extrapolate	What technique to use when the value to solve for is not within the input range. Can be either clamp or extend.	extend

License

MIT © Oluwaseun Adedire