class_docstr: Actor is a box moving in 2d space
code: def position_at(self, step: int):
      half = self.canvas_size / 2 - 50
      x = half * math.cos(self.omega_x * step + self.fi_x) + half
      y = half * math.cos(self.omega_y * step + self.fi_y) + half
      return (x, y)
  
file_path: norfair/demos/reid/src/video_generator.py
imports: import math
  import random
  import cv2
  import numpy
  from utils import collision_detected, get_color
  from norfair import Detection
label_desc: Use image node_id 2 for calling the Actor obj's underlying member method code with example usage: obj.position_at(step) and returns: x,  y