FloatImg4PythonBinding/funcs/sfx4.c

77 lines
1.8 KiB
C

/*
* FLOATIMG - a kluge from tTh
* ---------------------------
*
* some strange effects on floating pictures.
*/
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <sys/time.h>
#include "../floatimg.h"
extern int verbosity;
/* -------------------------------------------------------------- */
int fimg_sfx_triplemul(FloatImg *src, FloatImg *dst, int notused)
{
int x, y, foo;
float in[3], out[3];
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %p 0x%04x )\n", __func__, src, dst, notused);
#endif
for (y=0; y<src->height; y++) {
for (x=0; x<src->width; x++) {
foo = fimg_get_rgb(src, x, y, in);
if (foo) return foo;
out[0] = in[1] * in[2];
out[1] = in[0] * in[2];
out[2] = in[0] * in[1];
// fprintf(stderr, "%9f %9f %9f\n", out[0], out[1], out[2]);
foo = fimg_put_rgb(dst, x, y, out);
if (foo) return foo;
}
}
return 0;
}
/* -------------------------------------------------------------- */
/*
* see also:
sfx3.c:fimg_crump_hard()
*/
int fimg_split_level(FloatImg *src, FloatImg *dst, int notused)
{
float means[4];
float in[3];
int foo, idx, surface;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %p 0x%04x )\n", __func__, src, dst, notused);
#endif
foo = fimg_meanvalues(src, means);
if (foo) {
return -66;
}
surface = src->width*src->height;
for(idx=0; idx<surface; idx++) {
if (src->R[idx]<means[0]) dst->R[idx]=src->R[idx]*2.0;
else dst->R[idx]=(src->R[idx]-means[0])*2.0;
if (src->G[idx]<means[1]) dst->G[idx]=src->G[idx]*2.0;
else dst->G[idx]=(src->G[idx]-means[1])*2.0;
if (src->B[idx]<means[2]) dst->B[idx]=src->B[idx]*2.0;
else dst->B[idx]=(src->B[idx]-means[2])*2.0;
}
return 0;
}
/* -------------------------------------------------------------- */
/* -------------------------------------------------------------- */