filter.c

用于2维的射线追踪

#include <stdlib.h>
#include <string.h>


#include "filter.h"

int parse_filter_value(char *filter_string, struct ray_filter_t *rf)
{   
    int nb_filter=0;
    float tab[3] = {.0, .0, .0};
    char *p;

    if (!filter_string) {
	rf->residual_max = tab[0];
        rf->delta_max    = tab[1];
        rf->nb_event_min = (int)tab[2];
	return (3);
    }
    p = strtok(filter_string, ",");

    if (!p) {
	    return(-1);
    }
    
    do {
	tab[nb_filter] = atof(p);
	nb_filter++;
	if (nb_filter > 3)  {
		return(-1);
	}
    } while ((p = strtok(NULL, ",")) != NULL);
    
    rf->residual_max = tab[0];
    rf->delta_max    = tab[1];
    rf->nb_event_min = (int)tab[2];

    return (nb_filter);
}