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Properly implement color diff

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Semi fixes #239
This commit is contained in:
KennyTV 2020-07-30 15:22:27 +02:00
parent c5ba1864d1
commit fd529ce967
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1 changed files with 9 additions and 6 deletions
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15
core/src/main/java/nl/matsv/viabackwards/protocol/protocol1_15_2to1_16/chat/TranslatableRewriter1_16.java
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@ -98,13 +98,16 @@ public class TranslatableRewriter1_16 extends TranslatableRewriter {
} }
// Check by the greatest diff of the 3 values // Check by the greatest diff of the 3 values
int rDiff = Math.abs(color.r - r); int rAverage = (color.r + r) / 2;
int gDiff = Math.abs(color.g - g); int rDiff = color.r - r;
int bDiff = Math.abs(color.b - b); int gDiff = color.g - g;
int maxDiff = Math.max(Math.max(rDiff, gDiff), bDiff); int bDiff = color.b - b;
if (closest == null || maxDiff < smallestDiff) { int diff = ((2 + (rAverage >> 8)) * rDiff * rDiff)
+ (4 * gDiff * gDiff)
+ ((2 + ((255 - rAverage) >> 8)) * bDiff * bDiff);
if (closest == null || diff < smallestDiff) {
closest = color; closest = color;
smallestDiff = maxDiff; smallestDiff = diff;
} }
} }
return closest.colorName; return closest.colorName;