split example visualizaiton pipeline

examples/viz/finger_panels.py

@@ -0,0 +1,29 @@
+"""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)