forked from tTh/FloatImg
add "reverse flag" to fimg_contour_2x2
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414bff491b
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8206a1ac0a
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@ -98,7 +98,7 @@ int fimg_lissage_2x2(FloatImg *img);
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int fimg_filter_3x3(FloatImg *s, FloatImg *d, FimgFilter3x3 *filtr);
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int fimg_contour_2x2(FloatImg *psrc, FloatImg *pdst, int notused);
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int fimg_contour_2x2(FloatImg *psrc, FloatImg *pdst, int reverse);
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/* 'sfx0' module */
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int fimg_killcolors_a(FloatImg *fimg, float fval);
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@ -14,10 +14,11 @@ int verbosity;
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/* --------------------------------------------------------------------- */
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/* nouveau 4 octobre 2020, juste avant sonoptic de la pluie craignos */
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int fimg_contour_2x2(FloatImg *psrc, FloatImg *pdst, int notused)
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int fimg_contour_2x2(FloatImg *psrc, FloatImg *pdst, int reverse)
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{
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float avg[4];
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int foo, x, y, q;
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float v1, v2;
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int tbl[] = /* deep magic inside */
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{
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@ -28,9 +29,16 @@ int tbl[] = /* deep magic inside */
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};
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#if DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p %d )\n", __func__, psrc, pdst, notused);
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fprintf(stderr, ">>> %s ( %p %p %d )\n", __func__, psrc, pdst, reverse);
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#endif
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if (reverse) {
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v1 = 0.0; v2 = 1.0;
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}
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else {
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v1 = 1.0; v2 = 0.0;
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}
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foo = fimg_meanvalues(psrc, avg);
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if (verbosity) {
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fprintf(stderr, "mean values : %f %f %f\n", avg[0], avg[1], avg[2]);
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@ -48,19 +56,19 @@ for (y=0; y<psrc->height-1; y++) {
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( RP(x+1, y) << 2 ) |
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( RP(x, y+1) << 1 ) |
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( RP(x+1, y+1) ) );
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pdst->R[(y*psrc->width)+x] = tbl[q] ? 1.0 : 0.0 ;
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pdst->R[(y*psrc->width)+x] = tbl[q] ? v1 : v2 ;
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q = ( ( GP(x, y) << 3 ) |
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( GP(x+1, y) << 2 ) |
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( GP(x, y+1) << 1 ) |
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( GP(x+1, y+1) ) );
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pdst->G[(y*psrc->width)+x] = tbl[q] ? 1.0 : 0.0 ;
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pdst->G[(y*psrc->width)+x] = tbl[q] ? v1 : v2 ;
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q = ( ( BP(x, y) << 3 ) |
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( BP(x+1, y) << 2 ) |
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( BP(x, y+1) << 1 ) |
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( BP(x+1, y+1) ) );
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pdst->B[(y*psrc->width)+x] = tbl[q] ? 1.0 : 0.0 ;
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pdst->B[(y*psrc->width)+x] = tbl[q] ? v1 : v2 ;
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}
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