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util.c
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util.c
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#include <stdio.h>
#include <stdlib.h>
#include "types.h"
#include "util.h"
float
clamp(float value)
{
if (value >= 1.f) return 1.f;
else if (value <= 0.f) return 0.f;
else return value;
}
u32
parse_uint(char *src)
{
u32 buf = 0;
for (; *src; ++src) {
if (*src >= '0' && *src <= '9')
buf = (buf * 10) + (*src - '0');
}
return buf;
}
void
version(void *data, char **pars, const int pars_count)
{
fprintf(stdout, "mandelica v0.0.1\n");
exit(0);
}
void
handle_u32(void *data, char **pars, const int pars_count)
{
*((u32*) data) = parse_uint(pars[0]);
}
void
handle_float(void *data, char **pars, const int pars_count)
{
*((float*) data) = strtof(pars[0], NULL);
}
void
handle_bool(void *data, char **pars, const int pars_count)
{
*((bool*) data) = TRUE;
}
void
help(void *data, char **pars, const int pars_count)
{
printf("usage: mandelica [FLAGS] [OPTIONS]\n");
printf("\nFLAGS:\n");
printf(" -v --verbose print verbose information.\n");
printf(" -V --version print version and exit.\n");
printf(" --help print this help message and exit.\n");
printf("\nOPTIONS:\n");
printf(" -i --iters [ITERS] level of detail of resulting set. (default: 100)\n");
printf(" -w --width [WIDTH] width of resulting image. (default: 800)\n");
printf(" -h --height [HEIGHT] height of resulting image. (default: 650)\n");
printf(" --leftbdr [VALUE] minimum real of resulting set. (default: -2.0)\n");
printf(" --rightbdr [VALUE] maximum real of resulting set. (default: 1.0)\n");
printf(" --downbdr [VALUE] minimum imaginary of resulting set. (default: -1.2)\n");
printf(" --topbdr [VALUE] maximum imaginary of resulting set. (default: 1.2375)\n");
printf("\nReport bugs to https://github.com/lptstr/mandelica.\n");
exit(0);
}