Bibliothèque de traitements d'images en virgule flottante. http://la.buvette.org/photos/cumul/
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/*
testing some random funcs.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <string.h>
#include "floatimg.h"
int verbosity;
/* --------------------------------------------------------------------- */
int add(FloatImg *a, FloatImg *b)
{
int x, y;
int offset;
double tb;
fimg_timer_set(0);
for (x=0; x<a->width; x++) {
for (y=0; y<a->height; y++) {
offset = x + (y * a->width);
a->R[offset] += b->R[offset];
a->G[offset] += b->G[offset];
a->B[offset] += b->B[offset];
}
}
tb = fimg_timer_get(0);
fprintf(stderr, "%s = %f seconds\n", __func__, tb);
return 0;
}
/* --------------------------------------------------------------------- */
void fait_un_dessin(char *fname)
{
FloatImg dessin;
double tb;
puts("");
fimg_timer_set(0);
fimg_create(&dessin, 3200, 2400, 3);
fimg_draw_something(&dessin);
fimg_dump_to_file(&dessin, "dessin.fimg", 0);
fimg_destroy(&dessin);
tb = fimg_timer_get(0);
fprintf(stderr, "%s = %f seconds\n", __func__, tb);
puts("");
}
/* --------------------------------------------------------------------- */
int parse_WxH(char *str, int *pw, int *ph)
{
// char *ptr;
int foo, w, h;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( '%s' %p %p )\n", __func__,
str, pw, ph);
#endif
foo = sscanf(str, "%dx%d", &w, &h);
if (2 != foo) {
fprintf(stderr, "%s : arg '%s' is invalid\n", __func__, str);
return foo;
}
*pw = w; *ph = h;
return 2;
}
/* --------------------------------------------------------------------- */
void help(int k)
{
puts("Options :");
puts("\t-d WxH\timage size");
exit(0);
}
/* --------------------------------------------------------------------- */
int main(int argc, char *argv[])
{
FloatImg fimgA, fimgB;
int foo, opt;
int W = 800, H = 600;
double tb;
while ((opt = getopt(argc, argv, "d:hv")) != -1) {
switch(opt) {
case 'd': parse_WxH(optarg, &W, &H);
break;
case 'h': help(0); break;
case 'v': verbosity++; break;
}
}
if (verbosity) fimg_print_version(0);
fimg_create(&fimgA, W, H, 3);
fimg_create(&fimgB, W, H, 3);
fimg_timer_set(0);
fimg_drand48(&fimgB, 100.0);
fimg_drand48(&fimgA, 100.0);
add(&fimgA, &fimgB);
tb = fimg_timer_get(0);
fprintf(stderr, "%s = %f seconds\n", __func__, tb);
foo = fimg_save_as_pnm(&fimgA, "drand48.pnm", 0);
fimg_destroy(&fimgA);
fimg_destroy(&fimgB);
return 0;
}
/* --------------------------------------------------------------------- */