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Fix #15

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yushijinhun 2018-07-05 23:08:05 +08:00
parent 24e7b71a8a
commit e1651a2f89
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1 changed files with 17 additions and 0 deletions
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17
src/utils.js
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@ -47,10 +47,27 @@ function computeSkinScale(width) {
return width / 64.0;
}
function fixOpaqueSkin(context, width) {
// Some ancient skins don't have transparent pixels (nor have helm).
// We have to make the helm area transparent, otherwise it will be rendered as black.
if (!hasTransparency(context, 0, 0, width, width / 2)) {
let scale = computeSkinScale(width);
let clearArea = (x, y, w, h) => context.clearRect(x * scale, y * scale, w * scale, h * scale);
clearArea(40, 0, 8, 8); // Helm Top
clearArea(48, 0, 8, 8); // Helm Bottom
clearArea(32, 8, 8, 8); // Helm Right
clearArea(40, 8, 8, 8); // Helm Front
clearArea(48, 8, 8, 8); // Helm Left
clearArea(56, 8, 8, 8); // Helm Back
}
}
function convertSkinTo1_8(context, width) {
let scale = computeSkinScale(width);
let copySkin = (sX, sY, w, h, dX, dY, flipHorizontal) => copyImage(context, sX * scale, sY * scale, w * scale, h * scale, dX * scale, dY * scale, flipHorizontal);
fixOpaqueSkin(context, width);
copySkin(4, 16, 4, 4, 20, 48, true); // Top Leg
copySkin(8, 16, 4, 4, 24, 48, true); // Bottom Leg
copySkin(0, 20, 4, 12, 24, 52, true); // Outer Leg