/**
 * This calculates a bunch of helper variables and stores them
 */
export const calculateRatios = part => {
  let { store, measurements, options } = part.shorthand();

  // Calculate different values for reducing from chest to hips via waist
  store.set("chest", measurements.chestCircumference * (1 + options.chestEase));
  store.set("waist", measurements.naturalWaist * (1 + options.waistEase));
  store.set("hips", measurements.hipsCircumference * (1 + options.hipsEase));
  store.set("seat", measurements.seatCircumference * (1 + options.seatEase));

  store.set("waistReduction",  store.get("chest") - store.get("waist"));
  store.set("hipsReduction",  store.get("chest") - store.get("hips"));
};