mirrorEventsX - mirror ats choreo events and switch handedness (AudioTrip)

mirror.ts

import * as ATS from '@hn3000/ats-types'

/**
 * Mirrors ats choreo events X-pos across Y-axis and switches handedness.
 * Works for all gems including ribbons! also rotates drums and dirgems.
 */
export const mirrorEventsX = (events: ATS.IChoreoEvent[]): ATS.IChoreoEvent[] => {
  const newEvents: ATS.IChoreoEvent[] = [];
  for (let i = 0; i < events.length; i++) {
    const t = events[i].type;
    newEvents.push({
      type: t === 0 ? 0 : (t % 2 === 1 ? t + 1 : t - 1),
      hasGuide: events[i].hasGuide,
      time: events[i].time,
      beatDivision: events[i].beatDivision,
      position: {
        x: -events[i].position.x,
        y: events[i].position.y,
        z: events[i].position.z,
      },
      subPositions: events[i].subPositions.map(
        (subPos: {x: number, y: number, z: number}) => 
        ({
          x: t < 5 ? -subPos.x : subPos.x, // rotate drums and dirgems
          y: t < 5 ? subPos.y : -subPos.y, // rotate drums and dirgems
          z: subPos.z,
        })
      ),
      broadcastEventID: events[i].broadcastEventID,
    });
  }
  return newEvents;
};

/**
 * Mirrors ats choreo events X-pos across Y-axis *without* switching handedness.
 * Works for all gems including ribbons! also rotates drums and dirgems.
 */
export const mirrorEventsXNoHands = (events: ATS.IChoreoEvent[]): ATS.IChoreoEvent[] => {
  const newEvents: ATS.IChoreoEvent[] = [];
  for (let i = 0; i < events.length; i++) {
    const t = events[i].type;
    newEvents.push({
      type: t,
      hasGuide: events[i].hasGuide,
      time: events[i].time,
      beatDivision: events[i].beatDivision,
      position: {
        x: -events[i].position.x,
        y: events[i].position.y,
        z: events[i].position.z,
      },
      subPositions: events[i].subPositions.map(
        (subPos: {x: number, y: number, z: number}) => 
        ({
          x: t < 5 ? -subPos.x : subPos.x, // rotate drums and dirgems
          y: t < 5 ? subPos.y : -subPos.y, // rotate drums and dirgems
          z: subPos.z,
        })
      ),
      broadcastEventID: events[i].broadcastEventID,
    });
  }
  return newEvents;
};