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