import {add, weightedAvg} from "./vector.js";

const assert = (expected, actual) => {
  if (expected !== actual) {
    console.error(`fail: ${expected} !== ${actual}`);
    throw new Error('fail');
  }
  console.log(`${expected} === ${actual}`);
};

// add
{
  const v1 = {x: 1, y: 1};
  const v = add(v1, v1, v1);
  assert('{"x":3,"y":3}', JSON.stringify(v));
}

// weightedAvg

{
  const v1 = {x: 1, y: 1};
  const v2 = {x: -1, y: -1};
  const v3 = {x: 2, y: 2};
  assert('{"x":0,"y":0}', JSON.stringify(weightedAvg([[v1, 1], [v2, 1]])));
  assert('{"x":1,"y":1}', JSON.stringify(weightedAvg([[v1, 1], [v1, 1]])));
  assert('{"x":1.25,"y":1.25}', JSON.stringify(weightedAvg([[v1, 3], [v3, 1]])));
}