124 lines
2.4 KiB
C
124 lines
2.4 KiB
C
/*
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* programme de test pour
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* les fonctions de base.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <math.h>
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#include "../floatimg.h"
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int verbosity;
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/* ---------------------------------------------------------------- */
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int petit_dessin(FloatImg *img)
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{
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int x, y;
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float r, g, b;
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for (y=0; y<img->height; y++) {
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r = (float)y / (float)img->height;
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for (x=0; x<img->width; x++) {
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g = (float)x / (float)img->width;
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b = 0.0;;
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fimg_plot_rgb(img, x, y, r, g, b);
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}
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}
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return -1;
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}
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/* ---------------------------------------------------------------- */
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int essai_2gray(FloatImg *picz, char *outname)
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{
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int foo;
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FloatImg gray;
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fprintf(stderr, ">>> %s ( %p '%s' )\n", __func__, picz, outname);
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foo = fimg_create(&gray, picz->width, picz->height, FIMG_TYPE_GRAY);
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if (foo) {
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fprintf(stderr, "%s : err %d on fimg create\n", __func__, foo);
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exit(1);
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}
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foo = fimg_mk_gray_from(picz, &gray, 0);
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if (foo) {
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fprintf(stderr, "%s : err %d on fimg mk_gray_from\n", __func__, foo);
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exit(1);
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}
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foo = fimg_save_as_pnm(&gray, outname, 0);
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if (foo) {
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fprintf(stderr, "%s : err %d on save_as_pnm\n", __func__, foo);
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exit(1);
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}
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fimg_destroy(&gray);
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return 0;
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}
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/* ---------------------------------------------------------------- */
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int essai_contraste(char *fname)
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{
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int foo;
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FloatImg dessin, copy;
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double maxi;
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foo = fimg_create_from_dump(fname, &dessin);
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foo = fimg_clone(&dessin, ©, 0);
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maxi = (double)fimg_get_maxvalue(&dessin);
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fprintf(stderr, "avant power_2 valeur maxi = %f\n", maxi);
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fimg_power_2(&dessin, ©, maxi);
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maxi = (double)fimg_get_maxvalue(&dessin);
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fprintf(stderr, "apres power_2 valeur maxi = %f\n", maxi);
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fimg_dump_to_file(©, "power2.fimg", 0);
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fimg_square_root(&dessin, ©, maxi);
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maxi = (double)fimg_get_maxvalue(&dessin);
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fprintf(stderr, "apres square_root valeur maxi = %f\n", maxi);
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fimg_dump_to_file(©, "squareroot.fimg", 0);
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fimg_destroy(&dessin);
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return -1;
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}
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/* ---------------------------------------------------------------- */
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#define W 320
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#define H 240
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int main(int argc, char *argv[])
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{
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int foo, idx, opt;
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// char outname[100];
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int gray = 0;
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while ((opt = getopt(argc, argv, "gn:v")) != -1) {
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switch(opt) {
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case 'g': gray++; break;
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case 'n': foo=atoi(optarg); break;
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case 'v': verbosity++; break;
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}
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}
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if (verbosity) fimg_print_version(0);
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foo = essai_contraste("src.fimg");
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fprintf(stderr, "retour essai contraste -> %d\n", foo);
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return 0;
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}
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