pp.js

//--------------------------------------------------------------------------------
// pretty print
//--------------------------------------------------------------------------------

const os = require("os");

function ppNow() {
  return "[" + new Date().toLocaleTimeString().padStart(11) + "]";
}

function ppPath(pth) {
  return pth.replace(os.homedir(), "~");
}

// pp number with 2 decimals
function pp2Dec(num) {
  return (Math.round(num * 100) / 100).toFixed(2);
}

// pp right ascension: 21h36m14.42s
function ppRa([hours, mins, secs]) {
  return `${Math.round(hours)}h${Math.round(mins)}m${pp2Dec(secs)}s`;
}
// pp declination: 57°34'28.16"
function ppDec([degs, mins, secs]) {
  return `${Math.round(degs)}°${Math.round(mins)}'${pp2Dec(secs)}"`;
}

// pp degrees: 57.57°
function ppDeg(degs) {
  return `${pp2Dec(degs)}°`;
}

// pp radians: 0.69rad
function ppRad(degs) {
  return `${pp2Dec(degs)}rad`;
}

// pp J2000: [0.50, 0.76, 0.41][j2000]
function ppJ2000([x, y, z]) {
  return `[j2000 | x:${pp2Dec(x)}, y:${pp2Dec(y)}, z:${pp2Dec(z)}]`;
}

module.exports = {
  ppNow,
  ppPath,
  pp2Dec,
  ppRa,
  ppDec,
  ppDeg,
  ppRad,
  ppJ2000,
};