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premultiply colors in sigma

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lana-k
2026-03-29 19:56:24 +02:00
parent 5019013eff
commit 62fb92d824
3 changed files with 243 additions and 7 deletions
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24
patches/sigma+3.0.2.patch Normal file
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@@ -0,0 +1,24 @@
diff --git a/node_modules/sigma/dist/colors-beb06eb2.esm.js b/node_modules/sigma/dist/colors-beb06eb2.esm.js
index b7130d1..bf101b6 100644
--- a/node_modules/sigma/dist/colors-beb06eb2.esm.js
+++ b/node_modules/sigma/dist/colors-beb06eb2.esm.js
@@ -51,7 +51,6 @@ function _nonIterableRest() {
function _slicedToArray(r, e) {
return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest();
}
-
var HTML_COLORS = {
black: "#000000",
silver: "#C0C0C0",
@@ -267,7 +266,10 @@ for (var htmlColor in HTML_COLORS) {
FLOAT_COLOR_CACHE[HTML_COLORS[htmlColor]] = FLOAT_COLOR_CACHE[htmlColor];
}
function rgbaToFloat(r, g, b, a, masking) {
- INT32[0] = a << 24 | b << 16 | g << 8 | r;
+ const r_= Math.floor(r * a / 255)
+ const g_= Math.floor(g * a / 255)
+ const b_= Math.floor(b * a / 255)
+ INT32[0] = a << 24 | b_ << 16 | g_ << 8 | r_;
if (masking) INT32[0] = INT32[0] & 0xfeffffff;
return FLOAT32[0];
}