Error raising on unsorted dimensions for draw_rect/draw_rounded_rect

[Intenzi]

With the change in #6978
There is a hidden error now raised due to radius argument for draw_rounded_rectangle

This is in reference to x0, x1 dimensions raising the ValueError: x1 must be greater than or equal to x0

Wherein, the passed dimensions are sorted but when sent to draw_rounded_rectangle, it utilises underlying code of:-
self.draw.draw_rectangle((x0 + r + 1, y0, x1 - r - 1, y1), fill, 1)

Dynamic code such as draw_rounded_rectangle((2, 2), (2 + variable, 10), radius=3)
[variable is >=0]
Thus implicitly fail in certain cases where the variable's value is 4 or less, which explicitly is greater than x0.
The documentation only states for x1 >= x0 and y1 >= y0, which while satisfied will raise the error in the above case.

Question:
Is there an already known solution towards it, for example utilizing x0 + variable + radius + 1 when passing x1's value to the function? Which does not seem very ideal and may cause certain changes to the image generation that I am unaware of.
Can this be documented with a possible solution in such a case?

[radarhere]

So you are saying that

from PIL import Image, ImageDraw
im = Image.new("RGB", (1, 1))
draw = ImageDraw.Draw(im)
draw.rounded_rectangle(((2, 2), (5, 10)), radius=3)

fails with an error? When I try it with Pillow 9.5.0, it doesn't.

If you try the example I just posted, does it fail for you? If it doesn't, and your code does, could you provide the exact code that you're using?

[Intenzi]

Sorry for having you confused
I'm too short on coffee to reliably tell how this is occurring, but here are a few cases where it will lead to an error:-

from PIL import Image, ImageDraw
im = Image.new("RGB", (1, 1))
draw = ImageDraw.Draw(im)
draw.rounded_rectangle(((2, 2), (9, 10)), radius=3)

This leads to an error at line 382, in file -> ImageDraw.py , in rounded_rectangle
self.draw.draw_rectangle(top, ink, 1)
ValueError: x1 must be greater than or equal to x0

The error I have reported, does not get reproduced when utilizing the value as 5, just like you have said.
In my code, I am utilizing tuple shape, radius and the fill parameter

When reproduced with the fill parameter, I do get errors, but not for the reasons I assumed they would be for..
as it is not occurring with values like 3, 4, 5 but only certain values.
Here is the reproduction code, I apologize for being incomplete about my previous report.

from PIL import Image, ImageDraw
im = Image.new("RGB", (1, 1))
draw = ImageDraw.Draw(im)
draw.rounded_rectangle(((2, 2), (9, 10)), radius=3, fill=(0, 151, 62))

File ImageDraw.py, line 383, in rounded_rectangle
    self.draw.draw_rectangle((x0 + r + 1, y0, x1 - r - 1, y1), fill, 1)
ValueError: x1 must be greater than or equal to x0

With the same value 9 and fill parameter, this time the error is different and is the issue I am facing.

[radarhere]

Thanks. When I test your new code, I find that it has already been fixed by #7151.

The fix will be part of Pillow 10, due to be released on July 1.

[Intenzi]

Thankyou! That should resolve it