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Make sure at least 10% has alpha

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This commit is contained in:
Lim Chee Aun 2023-03-15 15:48:26 +08:00
parent ba2e9c29e4
commit eb4b22a265
1 changed files with 6 additions and 3 deletions
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9
src/components/avatar.jsx
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@ -56,9 +56,12 @@ function Avatar({ url, size, alt = '', ...props }) {
canvas.width,
canvas.height,
);
const hasAlpha = allPixels.data.some((pixel, i) => {
return i % 4 === 3 && pixel <= 128;
});
// At least 10% of pixels have alpha <= 128
const hasAlpha =
allPixels.data.filter((pixel, i) => i % 4 === 3 && pixel <= 128)
.length /
(allPixels.data.length / 4) >
0.1;
if (hasAlpha) {
// console.log('hasAlpha', hasAlpha, allPixels.data);
avatarRef.current.classList.add('has-alpha');