"""Finger-specific OpenCV panels for example scripts."""

from __future__ import annotations

import cv2
import orisys

from .opencv_maps import depth_colormap


def show_finger_uv_panels(
    unrolled,
    vnormal,
    depth_map,
    *,
    flow_threshold: float = 0.4,
    grid_spacing: int = 20,
    arrow_scale: float = 1.0,
) -> None:
    """Show depth colormap and UV unrolled flow arrows."""
    cv2.imshow("Depth", depth_colormap(depth_map))
    arrows = orisys.util.draw_arrows(
        unrolled,
        vnormal,
        threshold=flow_threshold,
        grid_spacing=grid_spacing,
        arrow_scale=arrow_scale,
    )
    cv2.imshow("UV Unrolled", arrows)