feat: add --compare flag for before/after comparison output#24
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hai-pilgrim wants to merge 1 commit into
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feat: add --compare flag for before/after comparison output#24hai-pilgrim wants to merge 1 commit into
hai-pilgrim wants to merge 1 commit into
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Adds a --compare CLI flag that outputs a side-by-side comparison image instead of just the processed result. The after image is upscaled to the original's dimensions using NEAREST resampling (preserving pixel edges), then placed alongside the original with "Before" / "After" labels. spritegrid input.png --compare -o comparison.png Comparison is suppressed in debug mode (--debug) and when the image is already clean pixel art (1:1 detection). Includes 9 unit tests. Closes marksverdhei#16 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
--compareCLI flag tospritegrid--debugmode and when the image is already clean pixel art (1:1 detection)tests/test_compare.pyUsage
spritegrid input.png --compare -o comparison.png spritegrid input.png --compare -i # show in viewerTest plan
uv run pytest)test_compare.pycovers size, pixel content, RGBA handling, and parameter variantsCloses #16
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