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Ensure removeAlpha removes all alpha channels #2266

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Lovell Fuller
2025-02-20 09:26:52 +00:00
parent 9d01dd20bf
commit edad89c531
10 changed files with 33 additions and 46 deletions
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4
src/utilities.cc
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@@ -233,10 +233,10 @@ Napi::Value _maxColourDistance(const Napi::CallbackInfo& info) {
double maxColourDistance;
try {
// Premultiply and remove alpha
if (sharp::HasAlpha(image1)) {
if (image1.has_alpha()) {
image1 = image1.premultiply().extract_band(1, VImage::option()->set("n", image1.bands() - 1));
}
if (sharp::HasAlpha(image2)) {
if (image2.has_alpha()) {
image2 = image2.premultiply().extract_band(1, VImage::option()->set("n", image2.bands() - 1));
}
// Calculate colour distance