76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
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* FLOATIMG - a kluge from tTh
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* ---------------------------
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*
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* some strange effects on floating pictures.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include "../floatimg.h"
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extern int verbosity;
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/* -------------------------------------------------------------- */
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int fimg_sfx_triplemul(FloatImg *src, FloatImg *dst, int notused)
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{
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int x, y, foo;
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float in[3], out[3];
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p 0x%04x )\n", __func__, src, dst, notused);
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#endif
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for (y=0; y<src->height; y++) {
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for (x=0; x<src->width; x++) {
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foo = fimg_get_rgb(src, x, y, in);
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if (foo) return foo;
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out[0] = in[1] * in[2];
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out[1] = in[0] * in[2];
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out[2] = in[0] * in[1];
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// fprintf(stderr, "%9f %9f %9f\n", out[0], out[1], out[2]);
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foo = fimg_put_rgb(dst, x, y, out);
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if (foo) return foo;
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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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/*
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* see also:
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sfx3.c:fimg_crump_hard()
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*/
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int fimg_split_level(FloatImg *src, FloatImg *dst, int notused)
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{
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float means[4];
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float in[3], out[3];
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int foo, idx, surface;
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p 0x%04x )\n", __func__, src, dst, notused);
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#endif
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foo = fimg_meanvalues(src, means);
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if (foo) {
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return -66;
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}
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surface = src->width*src->height;
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for(idx=0; idx<surface; idx++) {
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if (src->R[idx]<means[0]) dst->R[idx]=src->R[idx]*2.0;
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else dst->R[idx]=(src->R[idx]-means[0])*2.0;
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if (src->G[idx]<means[1]) dst->G[idx]=src->G[idx]*2.0;
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else dst->G[idx]=(src->G[idx]-means[1])*2.0;
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if (src->B[idx]<means[2]) dst->B[idx]=src->B[idx]*2.0;
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else dst->B[idx]=(src->B[idx]-means[2])*2.0;
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}
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return 0;
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}
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/* -------------------------------------------------------------- */
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/* -------------------------------------------------------------- */
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