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Fix diff and getDistance

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This commit is contained in:
epserv 2020-12-02 23:19:50 +05:00
parent dddce98c99
commit 106b7092c1
2 changed files with 67 additions and 59 deletions
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2
PATCHES.md
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@ -87,9 +87,9 @@ # Patches
| server | Modify default configs | tr7zw | |
| server | Nuke streams off BlockPosition | Ivan Pekov | |
| server | Nuke streams off SectionPosition | Ivan Pekov | |
| api | Optimise Bukkit's MapPalette | epserv | |
| server | Optimise portals | Ivan Pekov | |
| server | Optimize BehaviorController | MrIvanPlays | |
| api | Optimize Bukkit's MapPalette | epserv | |
| server | Optimize TileEntity load/unload | tr7zw | |
| server | Optimize Villagers | Ivan Pekov | |
| server | Optimize advancement loading | Ivan Pekov | |

112
patches/api/0011-Optimize-Bukkit-s-MapPalette.patch
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@ -1,91 +1,99 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: epserv <admin@epserv.ru>
Date: Wed, 2 Dec 2020 21:47:11 +0500
Subject: [PATCH] Optimize Bukkit's MapPalette
Date: Wed, 2 Dec 2020 19:31:20 +0200
Subject: [PATCH] Optimise Bukkit's MapPalette
diff --git a/src/main/java/org/bukkit/map/MapPalette.java b/src/main/java/org/bukkit/map/MapPalette.java
index 95fe3f4d081053a6cf484e4ef07b474f2dc2ab02..819362eeb8c2fd17583184730e5ed938f74d842b 100644
index 95fe3f4d081053a6cf484e4ef07b474f2dc2ab02..bb8a189d9323ca9d487a60feaa47a9b88c4fa9e5 100644
--- a/src/main/java/org/bukkit/map/MapPalette.java
+++ b/src/main/java/org/bukkit/map/MapPalette.java
@@ -6,6 +6,7 @@ import java.awt.Image;
import java.awt.image.BufferedImage;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
+import java.util.Arrays;
/**
* Represents the palette that map items use.
@@ -22,15 +23,11 @@ public final class MapPalette {
return new Color(r, g, b);
@@ -23,6 +23,8 @@ 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();
- int b = c1.getBlue() - c2.getBlue();
- double weightR = 2 + rmean / 256.0;
- double weightG = 4.0;
- double weightB = 2 + (255 - rmean) / 256.0;
- return weightR * r * r + weightG * g * g + weightB * b * b;
+ private static int getDistance(@NotNull Color c1, @NotNull Color c2) {
+ if (c1.getRGB() == c2.getRGB())
+ return 0;
+ final int r = c1.getRed() - c2.getRed(), g = c1.getGreen() - c2.getGreen(), b = c1.getBlue() - c2.getBlue();
+ return r * r + g * g + b * b;
private static double getDistance(@NotNull Color c1, @NotNull Color c2) {
+ // Yatopia start - faster method
+ /*
double rmean = (c1.getRed() + c2.getRed()) / 2.0;
double r = c1.getRed() - c2.getRed();
double g = c1.getGreen() - c2.getGreen();
@@ -31,6 +33,16 @@ public final class MapPalette {
double weightG = 4.0;
double weightB = 2 + (255 - rmean) / 256.0;
return weightR * r * r + weightG * g * g + weightB * b * b;
+ */
+ if (c1.getRGB() == c2.getRGB()) {
+ return 0.0;
+ }
+ double r = c1.getRed() - c2.getRed(),
+ g = c1.getGreen() - c2.getGreen(),
+ b = c1.getBlue() - c2.getBlue(),
+ x = (c1.getRed() + c2.getRed()) / 512d + 2d;
+ return x * r * r + 4 * g * g + (4.99609375d - x) * b * b;
+ // Yatopia end
}
@NotNull
@@ -96,6 +93,15 @@ public final class MapPalette {
@@ -96,6 +108,17 @@ public final class MapPalette {
c(14, 127, 93), c(17, 155, 114), c(20, 180, 133), c(10, 95, 70)
};
+ // Yatopia start - all colors as rgb integers
+ @NotNull
+ static final int[] rgbColors = new int[colors.length];
+
+ static {
+ for (int i = 0; i < colors.length; i++)
+ for (int i = 0; i < colors.length; i++) {
+ rgbColors[i] = colors[i].getRGB();
+ Arrays.sort(rgbColors);
+ }
+ java.util.Arrays.sort(rgbColors);
+ }
+ // Yatopia end
+
// Interface
/**
* @deprecated Magic value
@@ -235,19 +241,29 @@ public final class MapPalette {
@@ -235,19 +258,43 @@ public final class MapPalette {
public static byte matchColor(@NotNull Color color) {
if (color.getAlpha() < 128) return 0;
- int index = 0;
- double best = -1;
+ short index = 0;
+ short binaryIndex = (short) Arrays.binarySearch(rgbColors, color.getRGB());
+ if (binaryIndex != -1)
+ // Yatopia start - binary search first
+ int binaryIndex = java.util.Arrays.binarySearch(rgbColors, color.getRGB());
+ if (binaryIndex != -1) {
+ return (byte) (binaryIndex < 128 ? binaryIndex : binaryIndex - 256);
+ int best = -1;
+ }
+ // Yatopia end
+
int index = 0;
double best = -1;
- for (int i = 4; i < colors.length; i++) {
- double distance = getDistance(color, colors[i]);
- if (distance < best || best == -1) {
+ int distance;
+ for (short i = 4; i < MapPalette.colors.length; i++) {
+ if (i == 4) {
+ if ((best = distance = getDistance(color, MapPalette.colors[i])) == 0)
+ return (byte) (i < 128 ? i : i - 256);
+ best = distance;
+ index = i;
+ } else if ((distance = getDistance(color, MapPalette.colors[i])) < best) {
+ if (distance == 0)
+ return (byte) (i < 128 ? i : i - 256);
for (int i = 4; i < colors.length; i++) {
double distance = getDistance(color, colors[i]);
+ // Yatopia start - optimise this
+ /*
if (distance < best || best == -1) {
best = distance;
index = i;
}
+ */
+ if (i == 4) {
+ if (distance == 0) {
+ return (byte) i;
+ }
+ best = distance;
+ index = i;
+ } else if (distance < best) {
+ if (distance == 0) {
+ return (byte) i;
+ }
+ best = distance;
+ index = i;
+ }
+ // Yatopia end
}
// Minecraft has 143 colors, some of which have negative byte representations
- return (byte) (index < 128 ? index : -129 + (index - 127));
+ return (byte) (index < 128 ? index : index - 256);
+ return (byte) (index < 128 ? index : index - 256); // Yatopia
}
/**