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math-range

v1.1.2

Published

A set of range related Math functions

Downloads

7

Readme

A set of range utility functions

This script is an ES6 module.

API

Range.normalize

Takes a numeric value and input range, returns the normalized value (between 0 and 1)

import Range from "math-range";
Range.normalize(50, 0, 100);   // 0.5
Range.normalize(12, 5, 12);    // 1
Range.normalize(7, 7, 22);  // 0

Range.scale

Similar to Range.normalize but scale to an arbitrary range.

import Range from "math-range";
Range.scale(12, 0, 20, -10, 10);   // 2
Range.scale(50, 0, 100, 0, 1);    // 0.5 (same as Range.normalize(50, 0, 100))
Range.scale(0, -100, 100, 0, 20);  // 10

Range.random

Returns a random number in a range

import Range from "math-range";
Range.random(0, 1);   // Same as Math.random();
Range.random(0, 100);
Range.random(-10, 10);

Range.randomInt and Range.randomIntInclusive

Returns a random integer in a range

import Range from "math-range";
Range.randomInt(0, 100); // A random integer between 0 and 100 (100 being excluded)
Range.randomIntInclusive(0, 20); // A random integer between 0 and 20 (20 being included)

Installation

Use jspm to eases the use of ES6 features, the package is installed from the npm registry

jspm install npm:math-range

or simply use npm

npm install math-range --save