forked from tTh/FloatImg
77 lines
1.6 KiB
C
77 lines
1.6 KiB
C
/*
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* SPECIAL EFFECTS
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*
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* Du code bien cracra / tTh / Tetalab
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include <floatimg.h>
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#include "fonctions.h"
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/* -------------------------------------------------------------- */
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/* global vars from main
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*/
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extern int verbosity;
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/* -------------------------------------------------------------- */
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/* -------------------------------------------------------------- */
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int brotche_rand48_a(FloatImg *fimg, float ratio, float mval)
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{
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int nbpix, todo, foo;
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int x, y;
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float fval;
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nbpix = fimg->width * fimg->height;
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todo = (int)((float)nbpix * ratio);
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if (verbosity > 1) {
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fprintf(stderr, "%s: ratio %f nbpix %d todo %d\n", __func__,
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ratio, nbpix, todo);
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}
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for (foo=0; foo<todo; foo++)
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{
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fval = (float)drand48() * mval;
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x = rand() % fimg->width;
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y = rand() % fimg->height;
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fimg_plot_rgb(fimg, x, y, fval, fval, fval);
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}
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return 0;
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}
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/* -------------------------------------------------------------- */
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int brotche_rand48_b(FloatImg *fimg, float ratio, float mval)
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{
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int nbpix, todo, foo;
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int x, y;
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float fval;
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nbpix = fimg->width * fimg->height;
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todo = (int)((float)nbpix * ratio);
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if (verbosity > 1) {
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fprintf(stderr, "%s: ratio %f nbpix %d todo %d\n", __func__,
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ratio, nbpix, todo);
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}
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for (foo=0; foo<todo; foo++)
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{
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fval = (float)drand48() * mval;
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x = 1 + (rand() % (fimg->width-2));
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y = rand() % fimg->height;
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fimg_plot_rgb(fimg, x-1, y, fval, 0.0, 0.0);
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fimg_plot_rgb(fimg, x , y, 0.0, 0.0, fval);
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fimg_plot_rgb(fimg, x+1, y, 0.0, fval, 0.0);
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}
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return 0;
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}
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/* -------------------------------------------------------------- */
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