public class Rig {
  public Vec3 head_pos = Vec3.Zero;
  public Quat head_ori = Quat.Identity;
  public Vec3 view_pos = Vec3.Zero;

  public Hand hand_0 = new();
  public Hand hand_1 = new();
  public Vec3 palm_pos = Vec3.Zero;
  public Quat palm_ori = Quat.Identity;

  public Vec3 perch_pos = Vec3.Zero;

  public void Init() {
  }

  public void Run() {
    hand_0 = Input.Hand(Handed.Left);
    hand_1 = Input.Hand(Handed.Right);
    
    head_pos = Main.Mono.dev && Time.Totalf > 0.5f ? head_pos : Input.Head.position;
    head_ori = Main.Mono.dev && Time.Totalf > 0.5f ? head_ori : Input.Head.orientation;
    view_pos = head_pos + V.XYZ(0, -6*U.cm, 0);



    // Position is specifically defined as the middle of the middle finger's root (metacarpal) bone.
    palm_pos = hand_1.palm.position;
    // For orientation, Forward is the direction the flat of the palm is facing, "Iron Man" style. X+ is to the outside of the right hand, and to the inside of the left hand.
    palm_ori = hand_1.palm.orientation;

    perch_pos = palm_pos + Vec3.Up * 8 * U.cm;
  }

  public struct Btn {
    public bool frameDown, held, frameUp;

    public void Frame(bool down, bool? up = null) {
      if (up != null && held) {
        down = !(bool)up;
      }

      frameDown = down && !held;
      frameUp = !down && held;
      held = down;
    }
  }
}