57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/*
|
|
* FLOATIMG
|
|
* distorsions géométriques - coredumping ?
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "../floatimg.h"
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
/*
|
|
* really crude function, need more work...
|
|
*/
|
|
int fimg_halfsize_0(FloatImg *src, FloatImg *dst, int notused)
|
|
{
|
|
int wd, hd;
|
|
int foo, x, y;
|
|
float pixel[3];
|
|
|
|
#if DEBUG_LEVEL
|
|
fprintf(stderr, ">>> %s ( %p %p %d )\n", __func__,
|
|
src, dst, notused);
|
|
#endif
|
|
|
|
/* no magic check here ? */
|
|
if (dst->width || dst->height) {
|
|
fprintf(stderr, "*** %s: image at %p not empty\n", __func__, dst);
|
|
fimg_describe(dst, "destination halfsize");
|
|
return -2;
|
|
}
|
|
|
|
wd = src->width / 2; hd = src->height / 2;
|
|
foo = fimg_create(dst, wd, hd, FIMG_TYPE_RGB);
|
|
if (foo) {
|
|
fprintf(stderr, "%s: err create %d\n", __func__, foo);
|
|
return -3;
|
|
}
|
|
|
|
for (y=0; y<hd; y++) {
|
|
for (x=0; x<wd; x++) {
|
|
foo = fimg_get_rgb(src, x*2, y*2, pixel);
|
|
if (foo) {
|
|
fprintf(stderr, "%s: err get %d\n", foo);
|
|
abort();
|
|
}
|
|
foo = fimg_plot_rgb(dst, x, y, pixel[0], pixel[1], pixel[2]);
|
|
if (foo) {
|
|
fprintf(stderr, "%s: err plot %d\n", foo);
|
|
abort();
|
|
}
|
|
}
|
|
|
|
}
|
|
return 0;
|
|
}
|
|
/* --------------------------------------------------------------------- */
|