How to deform with a mesh

[AeroDEmi]

Hi guys,

I have a question, I have a mesh with deformations, like this:

and I would like to deform an image with this mesh. I found that Image.Image.transform has (target , source) but the target is a square while the source is a quadrilateral shape. Is there a way to make the target quadrilateral and the source square?

[radarhere]

What leads you to the conclusion that https://pillow.readthedocs.io/en/stable/reference/Image.html#PIL.Image.Image.transform requires the target to be a square?

[radarhere]

The following code transforms our square test image into a quadrilateral target.

from PIL import Image
im = Image.open("hopper.png")
w, h = im.size
out = im.transform(im.size, Image.Transform.QUAD, (-w//2, -h//2, 0, h, w*2, h*2, w, 0), Image.Resampling.BILINEAR)