Update GilbertCurve.cpp

mcychan · Feb 6, 2025 · 41d9ec3 · 41d9ec3
1 parent 3584130
commit 41d9ec3
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/nQuantCpp/GilbertCurve.cpp b/nQuantCpp/GilbertCurve.cpp
@@ -278,15 +278,15 @@ namespace Peano
 		m_hasAlpha = weight < 0;
 
 		errorq.clear();
-		sortedByYDiff = !m_hasAlpha && m_saliencies && m_nMaxColor >= 128 && weight >= .052;
 		weight = abs(weight);
 		margin = weight < .0025 ? 12 : weight < .004 ? 8 : 6;
+		sortedByYDiff = !m_hasAlpha && m_saliencies && m_nMaxColor >= 128 && weight >= .052;
 		beta = m_nMaxColor > 8 ? m_nMaxColor > 24 ? .25f : .7f : 1;
 		if (m_nMaxColor > 64 || weight > .02)
 			beta *= .4f;
 		DITHER_MAX = weight < .01 ? (weight > .0025) ? (BYTE)25 : 16 : 9;
 		auto edge = m_hasAlpha ? 1 : exp(weight) + .25;
-		auto deviation = weight > .002 ? .25 : 1;
+		auto deviation = !hasAlpha && weight > .002 ? .25 : 1;
 		ditherMax = (m_hasAlpha || DITHER_MAX > 9) ? (BYTE)sqr(_sqrt(DITHER_MAX) + edge * deviation) : DITHER_MAX;
 		int density = m_nMaxColor > 16 ? 3200 : 1500;
 		if (m_nMaxColor / weight > 5000 && (weight > .045 || (weight > .01 && m_nMaxColor <= 64)))