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introduce GRAFX2_QUANTIZE_CLUSTER_POPULATION_SPLIT macro to change cluster splitting method

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Thomas Bernard 2017-12-23 14:26:08 +01:00
parent 9ec4adae80
commit 5d47a76a50
1 changed files with 13 additions and 1 deletions
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14
src/op_c.c
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@ -2,6 +2,7 @@
*/
/* Grafx2 - The Ultimate 256-color bitmap paint program
Copyright 2017 Thomas Bernard
Copyright 2010 Alexander Filyanov
Copyright 2007 Adrien Destugues
Copyright 1996-2001 Sunset Design (Guillaume Dorme & Karl Maritaud)
@ -32,6 +33,11 @@
#include "errors.h"
#include "colorred.h"
// If GRAFX2_QUANTIZE_CLUSTER_POPULATION_SPLIT is defined,
// the clusters are splitted in two half of equal (pixel) population.
// Otherwise, they are splitted in two half of equal volume.
//#define GRAFX2_QUANTIZE_CLUSTER_POPULATION_SPLIT
int Convert_24b_bitmap_to_256_fast(T_Bitmap256 dest,T_Bitmap24B source,int width,int height,T_Components * palette);
/// Convert RGB to HSL.
@ -473,6 +479,7 @@ ENDCRUSH:
}
#ifndef GRAFX2_QUANTIZE_CLUSTER_POPULATION_SPLIT
/// Split a cluster on its longest axis.
/// c = source cluster, c1, c2 = output after split
/// the two output cluster have half volume (and not half population)
@ -532,6 +539,7 @@ void Cluster_split_volume(T_Cluster * c, T_Cluster * c1, T_Cluster * c2, int hue
}
}
#else // GRAFX2_QUANTIZE_CLUSTER_POPULATION_SPLIT
/// Split a cluster on its longest axis.
/// c = source cluster, c1, c2 = output after split
/// the two output clusters have half population (and not half volume)
@ -663,6 +671,7 @@ void Cluster_split(T_Cluster * c, T_Cluster * c1, T_Cluster * c2, int hue,
c2->bmin=b; c2->bmax=c->bmax;
}
}
#endif // GRAFX2_QUANTIZE_CLUSTER_POPULATION_SPLIT
/// Compute the mean R, G, B (for palette generation) and H, L (for palette sorting)
@ -861,8 +870,11 @@ void CS_Generate(T_Cluster_set * cs, const T_Occurrence_table * const to, CT_Tre
free(current);
break;
}
#ifndef GRAFX2_QUANTIZE_CLUSTER_POPULATION_SPLIT
Cluster_split_volume(current, &Nouveau1, &Nouveau2, current->data.cut.plus_large);
//Cluster_split(current, &Nouveau1, &Nouveau2, current->data.cut.plus_large, to);
#else
Cluster_split(current, &Nouveau1, &Nouveau2, current->data.cut.plus_large, to);
#endif
free(current);
// Pack the 2 new clusters (the split may leave some empty space between the