forked from tTh/FloatImg
52 lines
1.0 KiB
C
52 lines
1.0 KiB
C
|
/*
|
||
|
|
* glitches.c
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#include "../floatimg.h"
|
||
|
|
|
||
|
|
extern int verbosity;
|
||
|
|
|
||
|
|
/* -------------------------------------------------------------- */
|
||
|
|
int kill_a_random_line(FloatImg *pvictime, float fval, int notused)
|
||
|
|
{
|
||
|
|
int line, xpos, offset;
|
||
|
|
|
||
|
|
#if DEBUG_LEVEL
|
||
|
|
fprintf(stderr, ">>> %s ( %p %d )\n", __func__, pvictime, notused);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
line = rand() % pvictime->height;
|
||
|
|
|
||
|
|
if (verbosity > 1) {
|
||
|
|
fprintf(stderr, "%s: try to kill line %d\n", __func__, line);
|
||
|
|
}
|
||
|
|
|
||
|
|
offset = pvictime->width * line;
|
||
|
|
|
||
|
|
for (xpos=offset; xpos<pvictime->width; xpos++) {
|
||
|
|
pvictime->R[offset] = fval;
|
||
|
|
pvictime->G[offset] = 0.0;
|
||
|
|
pvictime->B[offset] = fval;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
/* -------------------------------------------------------------- */
|
||
|
|
int kill_a_few_lines(FloatImg *who, float fval, int number)
|
||
|
|
{
|
||
|
|
int idx, foo;
|
||
|
|
|
||
|
|
/* Frag the pixels */
|
||
|
|
for (idx=0; idx<number; idx++) {
|
||
|
|
foo = kill_a_random_line(who, fval, 0);
|
||
|
|
if (foo) abort();
|
||
|
|
}
|
||
|
|
|
||
|
|
return foo;
|
||
|
|
}
|
||
|
|
/* -------------------------------------------------------------- */
|
||
|
|
|