| Current Path : C:/inetpub/vhost/binhdinhinvest.gdtvietnam.com/api/node_modules/pngjs/lib/ |
| Current File : C:/inetpub/vhost/binhdinhinvest.gdtvietnam.com/api/node_modules/pngjs/lib/paeth-predictor.js |
"use strict";
module.exports = function paethPredictor(left, above, upLeft) {
let paeth = left + above - upLeft;
let pLeft = Math.abs(paeth - left);
let pAbove = Math.abs(paeth - above);
let pUpLeft = Math.abs(paeth - upLeft);
if (pLeft <= pAbove && pLeft <= pUpLeft) {
return left;
}
if (pAbove <= pUpLeft) {
return above;
}
return upLeft;
};