mirror of
https://github.com/Winds-Studio/Leaf.git
synced 2025-12-21 07:59:26 +00:00
41 lines
1.8 KiB
Diff
41 lines
1.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Barnaby <22575741+barnabwhy@users.noreply.github.com>
|
|
Date: Sat, 29 Jun 2024 12:04:48 +0100
|
|
Subject: [PATCH] Paper PR: Optimise color distance check in MapPalette by
|
|
removing floating point math
|
|
|
|
Original license: GPLv3
|
|
Original project: https://github.com/PaperMC/Paper
|
|
Paper pull request: https://github.com/PaperMC/Paper/pull/11000
|
|
|
|
diff --git a/src/main/java/org/bukkit/map/MapPalette.java b/src/main/java/org/bukkit/map/MapPalette.java
|
|
index 7d4172dbe5247f4cbe776334d99c4e4c40ac7dbb..1cda69ab051a327694215b6eb75e02ce3273beeb 100644
|
|
--- a/src/main/java/org/bukkit/map/MapPalette.java
|
|
+++ b/src/main/java/org/bukkit/map/MapPalette.java
|
|
@@ -31,14 +31,19 @@ public final class MapPalette {
|
|
}
|
|
|
|
private static double getDistance(@NotNull Color c1, @NotNull Color c2) {
|
|
- double rmean = (c1.getRed() + c2.getRed()) / 2.0;
|
|
- double r = c1.getRed() - c2.getRed();
|
|
- double g = c1.getGreen() - c2.getGreen();
|
|
+ // Paper start - Optimize color distance calculation by removing floating point math
|
|
+ int rsum = c1.getRed() + c2.getRed(); // Use sum instead of mean for no division
|
|
+ int r = c1.getRed() - c2.getRed();
|
|
+ int g = c1.getGreen() - c2.getGreen();
|
|
int b = c1.getBlue() - c2.getBlue();
|
|
- double weightR = 2 + rmean / 256.0;
|
|
- double weightG = 4.0;
|
|
- double weightB = 2 + (255 - rmean) / 256.0;
|
|
+ // All weights are 512x their original to avoid floating point division
|
|
+ int weightR = 1024 + rsum;
|
|
+ int weightG = 2048;
|
|
+ int weightB = 1024 + (255*2 - rsum);
|
|
+
|
|
+ // Division by 256 here is unnecessary as this won't change the result of the sort
|
|
return weightR * r * r + weightG * g * g + weightB * b * b;
|
|
+ // Paper end
|
|
}
|
|
|
|
@NotNull
|