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Description
Expected Behavior
Jimp's .mask() method doesn't give the same output as Gimp. Whether this is a fault of Gimp or Jimp, I'm not certain.
Current Behavior
The input image has image information on the left, and mask information on the right.
The final result of masking (after inverting the mask) in Gimp (left) vs Jimp (right) (with a black background, to better show transparency discrepancies)
Steps to Reproduce
const Jimp = require('jimp');
Jimp.read('input.png')
.then((image) => {
let mask = image
.clone()
.crop(image.bitmap.width / 2, 0, image.bitmap.width / 2, image.bitmap.height)
.invert();
image
.crop(0, 0, image.bitmap.width / 2, image.bitmap.height)
.mask(mask, 0, 0)
.write('output.png');
})
.catch((err) => {
console.log(err);
});
Screenshots
Comparison images
Image as seen in-game:
Context
- Jimp Version:
0.16.2-canary.969.1115.0 - Operating System:
Windows 10 LTSC 1809 Build 17763.1577 - Node version:
v12.18.0
Extra note: Found and read issue #949, and I believed my issue to be different. Please close this issue if you think otherwise.