Tereszka.js

const fs = require("fs");
const utils = require("./utils");
const settings = require("./settings");

const [...fibonacciNumbers] = utils.fibonacci(30);
const phi = (1 + Math.sqrt(5)) / 2;

let frame = 0;

const height = settings.canvas.height * 25.4;
const width = settings.canvas.width * 25.4;
const maxLength = fibonacciNumbers[settings.max];
const minLength = fibonacciNumbers[settings.min];

function calulateDestination(origin, length, angle) {
  const destination = utils.circumferencePoint(length / 2, angle,
    origin);

  if (destination[0] < 0) {
    return origin;
  }
  if (destination[0] > width) {
    return origin;
  }
  if (destination[1] < 0) {
    return origin;
  }
  if (destination[1] > height) {
    return origin;
  }
  return destination;
}

let points = [[0, 965.2]];

function calculateAngle(frame) {
  const v = Math.random() * settings.variance;
  return frame % 360 - v;
}

function calculateLength(frane) {
  const position = frame % (settings.max - settings.min) + settings.min;
  return fibonacciNumbers[position];
}

function next(point) {
  const angle = calculateAngle(frame);
  const length = calculateLength(frame);
  const destination = calulateDestination(point, length, angle);

  return destination;
}

while (frame < settings.lines) {
  const nextPoint = next(points[frame]);
  points.push([nextPoint[0],  nextPoint[1]]);
  frame += 1;
}

// Line Number
function N() {
  const number = frame * settings.file.skip;
  frame += 1;

  return number < 10 ? `N0${number}` : `N${number}`;
}

const stream = fs.createWriteStream("testprogram.txt");

stream.once('open', () => {

  // begin

  // Signals start of data during file transfer.
  stream.write(`%\n`);

  // G01 Linear interpolation
  // G21 Programming in millimeters (mm)
  // stream.write(`${N()} G90 G01 G21 F10\n`);
  stream.write(`${N()} G90 G01 F10\n`);

  // S0 Spindle speed
  stream.write(`${N()} S0\n`);

  // position
  points.forEach(point => {
    stream.write(`${N()} X${point[0] / 25.4} Y${point[1] / 25.4} Z0\n`);
  });

  // end

  // MO2 End program
  stream.write("M02\n");
  stream.end();
});