89 lines
1.7 KiB
C
89 lines
1.7 KiB
C
#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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#define W 2048
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#define H 2048
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int main(int argc, char *argv[])
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{
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int foo;
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FloatImg dessin, noise, result;
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verbosity = 1;
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fimg_print_version(1);
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foo = fimg_create(&dessin, W, H, 3);
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petit_dessin(&dessin);
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foo = fimg_create(&noise, W, H, 3);
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fimg_drand48(&noise, 0.1);
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foo = fimg_create(&result, W, H, 3);
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foo = fimg_mul(&dessin, &noise, &result);
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essai_2gray(&result, "gray.pnm");
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fimg_destroy(&dessin), fimg_destroy(&noise), fimg_destroy(&result);
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return 0;
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}
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