forked from tTh/FloatImg
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
/*
|
|
* FLOATIMG - a kluge from tTh
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
|
|
#include "../floatimg.h"
|
|
|
|
extern int verbosity;
|
|
|
|
/*
|
|
* a place for moving here Fonderie effects
|
|
*/
|
|
/* -------------------------------------------------------------- */
|
|
int fimg_binarize(FloatImg *pimg, int notused)
|
|
{
|
|
float mm[6], mR, mG, mB;
|
|
int foo, size;
|
|
|
|
#if DEBUG_LEVEL
|
|
fprintf(stderr, ">>> %s ( %p %d )\n", __func__, pimg, notused);
|
|
#endif
|
|
|
|
foo = fimg_get_minmax_rgb(pimg, mm);
|
|
mR = (mm[1] - mm[0]) / 2.0;
|
|
mG = (mm[3] - mm[2]) / 2.0;
|
|
mB = (mm[5] - mm[4]) / 2.0;
|
|
|
|
if (verbosity > 1)
|
|
fprintf(stderr, "%s: %f %f %f\n", __func__, mR, mG, mB);
|
|
|
|
size = pimg->width * pimg->height;
|
|
|
|
for (foo=0; foo<size; foo++) {
|
|
if (pimg->R[foo] < mR) pimg->R[foo] = mm[0];
|
|
else pimg->R[foo] = mm[1];
|
|
if (pimg->G[foo] < mG) pimg->G[foo] = mm[2];
|
|
else pimg->G[foo] = mm[3];
|
|
if (pimg->B[foo] < mB) pimg->B[foo] = mm[4];
|
|
else pimg->B[foo] = mm[5];
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
/* -------------------------------------------------------------- */
|
|
|
|
int fimg_trinarize(FloatImg *pimg, int notused)
|
|
{
|
|
float mm[6], mRa, mGa, mBa, mRb, mGb, mBb;
|
|
float *fptr;
|
|
int foo, size;
|
|
|
|
#if DEBUG_LEVEL
|
|
fprintf(stderr, ">>> %s ( %p %d )\n", __func__, pimg, notused);
|
|
#endif
|
|
|
|
foo = fimg_get_minmax_rgb(pimg, mm);
|
|
mRa = (mm[1] - mm[0]) * 0.33333;
|
|
mGa = (mm[3] - mm[2]) * 0.33333;
|
|
mBa = (mm[5] - mm[4]) * 0.33333;
|
|
mRb = (mm[1] - mm[0]) * 0.66666;
|
|
mGb = (mm[3] - mm[2]) * 0.66666;
|
|
mBb = (mm[5] - mm[4]) * 0.66666;
|
|
|
|
size = pimg->width * pimg->height;
|
|
|
|
for (foo=0; foo<size; foo++) {
|
|
|
|
fptr = pimg->R;
|
|
if (fptr[foo] < mRa || fptr[foo] > mRb)
|
|
fptr[foo] = mm[0];
|
|
else
|
|
fptr[foo] = mm[1];
|
|
|
|
fptr = pimg->G;
|
|
if (fptr[foo] < mGa || fptr[foo] > mGb)
|
|
fptr[foo] = mm[2];
|
|
else
|
|
fptr[foo] = mm[3];
|
|
|
|
fptr = pimg->B;
|
|
if (fptr[foo] < mBa || fptr[foo] > mBb)
|
|
fptr[foo] = mm[4];
|
|
else
|
|
fptr[foo] = mm[5];
|
|
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
/* -------------------------------------------------------------- */
|
|
|