Linear map function for node and browser (browserify or similar)
var map = require('linmap')
// map(min1, max1, min2, max2, input)
var result = map(0, 100, 0, 10, 50)
// => 5
Maps the mouseX position from 0 to 10
window.addEventListener('mousemove', function (e) {
var result = map(0, window.innerWidth, 0, 10, e.pageX)
console.log(result)
})