mutilz

Utility math functions for graphics programming like random choices, smoothstep round etc.

Usage

yarn add mutilz

import * as u from 'mutilz';

console.log(u.PI);

PI constant PI TAU constant PI * 2.0

rad(degree) convert degree to radian

rand(min, max) random float between min, max

randInt(min, max) random integer between min, max

arand(values) pick a random item from an array

weightedChoice(weights) pick a random value out of given items based on given weights. Input is in the form [[item, weight], [item2, weight2]], where weight is between 0 and 1, and all weights should add up to 1.

clamp(v, min, max) clamp v to min and max

usin(v) sin value in range 0 and 1

smoothstep(min, max, value) smoothstep value

mix(x, y, a) mix x, y based on a

round(v, d = 100) round value to d digits

map(n, start1, stop1, start2, stop2) map value n from range start1/stop1 to start2/stop2