forked from tTh/FloatImg
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
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/*
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* FLOATIMG - a kluge from tTh
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* effets spéciaux bizarres sur les couleurs.
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* nouveau pour un truc chelou avec Maëva
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*/
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#include <stdio.h>
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#include <string.h>
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#include "../floatimg.h"
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/* WARNING
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some crapy code cuted & pasted here */
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/* --------------------------------------------------------------------- */
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static void highlight_red(FloatImg *src, FloatImg *dst, float fval)
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{
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int sz, idx;
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sz = src->width * src->height;
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for (idx=0; idx<sz; idx++) {
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dst->G[idx] = src->G[idx];
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dst->B[idx] = src->B[idx];
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if ( (src->G[idx] < src->R[idx]) &&
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(src->B[idx] < src->R[idx]) ) {
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dst->R[idx] = src->R[idx] * fval;
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}
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else {
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dst->R[idx] = src->R[idx];
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}
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}
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}
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/* --------------------------------------------------------------------- */
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static void highlight_green(FloatImg *src, FloatImg *dst, float fval)
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{
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int sz, idx;
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sz = src->width * src->height;
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for (idx=0; idx<sz; idx++) {
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dst->R[idx] = src->R[idx];
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dst->B[idx] = src->B[idx];
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if ( (src->R[idx] < src->R[idx]) &&
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(src->B[idx] < src->R[idx]) ) {
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dst->G[idx] = src->G[idx] * fval;
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}
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else {
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dst->G[idx] = src->G[idx];
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}
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}
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}
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/* --------------------------------------------------------------------- */
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static void highlight_blue(FloatImg *src, FloatImg *dst, float fval)
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{
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int sz, idx;
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sz = src->width * src->height;
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for (idx=0; idx<sz; idx++) {
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dst->G[idx] = src->G[idx];
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dst->R[idx] = src->R[idx];
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if ( (src->G[idx] < src->B[idx]) &&
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(src->R[idx] < src->B[idx]) ) {
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dst->B[idx] = src->B[idx] * fval;
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}
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else {
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dst->B[idx] = src->B[idx];
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}
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}
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}
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/* --------------------------------------------------------------------- */
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int fimg_highlight_color(FloatImg *src, FloatImg *dst, char color, float fval)
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{
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int sz;
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#ifdef DEBUG_LEVEL
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fprintf(stderr, ">>> %s ( %p %p [%c] %f )\n", __func__,
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src, dst, color, fval);
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#endif
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if (FIMG_TYPE_RGB != src->type) {
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fprintf(stderr, "%s: bad src type %d on %p\n", __func__,
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src->type, src);
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return -8;
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}
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if (fimg_images_not_compatible(src, dst)) {
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fprintf(stderr, "oh fuck in %s\n", __func__);
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return -9;
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}
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switch (color) {
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case 'r': case 'R':
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highlight_red(src, dst, fval); break;
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case 'g': case 'G':
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highlight_green(src, dst, fval); break;
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case 'b': case 'B':
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highlight_blue(src, dst, fval); break;
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default:
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fprintf(stderr, "%s: '%c' is invalid\n", __func__, color);
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return -11;
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break; /* nottreached */
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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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