vue-tronlink/src/utils/math.js

Vue support for the TronLink browser extension

const { PI, cos, sin, abs, sqrt, pow, round, random, atan2 } = Math
const HALF_PI = 0.5 * PI
const TAU = 2 * PI
const TO_RAD = PI / 180
const floor = n => n | 0
const rand = n => n * random()
const randIn = (min, max) => rand(max - min) + min
const randRange = n => n - rand(2 * n)
const fadeIn = (t, m) => t / m
const fadeOut = (t, m) => (m - t) / m
const fadeInOut = (t, m) => {
    const hm = 0.5 * m
    return abs((t + hm) % m - hm) / (hm)
}
const dist = (x1, y1, x2, y2) => sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2))
const angle = (x1, y1, x2, y2) => atan2(y2 - y1, x2 - x1)
const lerp = (n1, n2, speed) => (1 - speed) * n1 + speed * n2

export {
    PI,
    cos,
    sin,
    abs,
    sqrt,
    pow,
    round,
    random,
    atan2,
    HALF_PI,
    TAU,
    TO_RAD,
    floor,
    rand,
    randIn,
    randRange,
    fadeIn,
    fadeInOut,
    fadeOut,
    dist,
    angle,
    lerp
}