ImageDraw.line and Coords typing issue #8798
Description
ImageDraw.line is currently using Coords for xy argument.
Line 237 in c7ed097
Line 40 in c7ed097
Coords allows Sequence[Sequence], so it should support both tuple[tuple] and list[list] but currently it doesn't seem to be the case with ImageDraw.line - it fails with list[list] at runtime though there are no typing errors.
See example below.
from PIL import Image, ImageDraw
import numpy as np
img_size = (200, 200)
scale = 1.0
img = Image.new("RGB", img_size, "white")
draw = ImageDraw.Draw(img)
verts = np.array(
[
[[22.0, 105.0], [114.0, 105.0]],
[[22.0, 105.0], [22.0, 23.0]],
[[114.0, 105.0], [114.0, 113.0]],
[[114.0, 113.0], [14.0, 113.0]],
[[14.0, 113.0], [14.0, 15.0]],
[[14.0, 15.0], [114.0, 15.0]],
[[114.0, 15.0], [114.0, 23.0]],
[[114.0, 23.0], [22.0, 23.0]],
]
)
for verts_ in verts:
lst: list[list[float]]
lst = verts_.tolist()
# No typing errors but fails at runtime.
# Traceback (most recent call last):
# File "second_test.py", line 28, in <module>
# draw.line(verts_.tolist(), fill="black", width=2)
# File "\Lib\site-packages\PIL\ImageDraw.py", line 249, in line
# self.draw.draw_lines(xy, ink, width)
# ValueError: incorrect coordinate type
# draw.line(lst, fill="black", width=2)
# Works fine, list of tuples also work fine too.
tple = tuple(tuple(i) for i in verts_)
draw.line(tple, fill="black", width=2)
# Show the image
img.show()