import cv2
import numpy as np

def draw_arc_contours(
    img_bgr: np.ndarray,
    vertebrae,
    arc_infos,
    colors=((255, 0, 255), (0, 255, 255), (255, 255, 0)),
):
    """Визуализация контура дуги деформации"""
    vis = img_bgr.copy()
    for i, info in enumerate(arc_infos):
        pts = info.get("centerline_pts")
        if pts is None:
            continue
        pts_i = np.round(pts).astype(np.int32).reshape(-1, 1, 2)
        color = colors[i % len(colors)]
        cv2.polylines(vis, [pts_i], isClosed=False, color=color, thickness=3)
    return vis