oscillate.js

oscillate.js

function oscillate(intervals, threshhold) {
  intervals = intervals || (-1*intervals) || 1;
  threshhold = threshhold || (-1*threshhold) || 1;
  
  const distance = threshhold * 2;
  const minute = 60;
  const rateOfChange = (distance / minute);

  console.log({ intervals, threshhold, distance, rateOfChange });

  const UP = 1;
  const DOWN = -1;
  let trajectory = UP;

  let value = 0;
  let graph = [[0, value]]; // start at (0, 0) for 0th interval
  let interation = 0;
  while(++interation <= intervals) {
    if (trajectory === UP)  {
      value += rateOfChange;
      trajectory = value >= threshhold ? DOWN : UP;
    }
    else { // going DOWN
      value -= rateOfChange;
      trajectory = value <= (-1*threshhold) ? UP : DOWN;
    }
    graph.push([interation, value]);
  }

  return graph;
}

const LOVE = oscillate(143, 2);
const GOD = oscillate(777, 3);

console.log({ LOVE, GOD })