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Add imagetools.py.

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This commit is contained in:
Ethan Dalool 2020-02-04 19:26:12 -08:00
parent 98f716256c
commit 1707b40292
1 changed files with 19 additions and 0 deletions
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voussoirkit/imagetools.py Normal file
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def fit_into_bounds(image_width, image_height, frame_width, frame_height, only_shrink=False):
'''
Given the w+h of the image and the w+h of the frame,
return new w+h that fits the image into the frame
while maintaining the aspect ratio.
(1920, 1080, 400, 400) -> (400, 225)
'''
width_ratio = frame_width / image_width
height_ratio = frame_height / image_height
ratio = min(width_ratio, height_ratio)
new_width = int(image_width * ratio)
new_height = int(image_height * ratio)
if only_shrink and (new_width > image_width or new_height > image_height):
return (image_width, image_height)
return (new_width, new_height)