File: vector.c

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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "gis.h"
#include "vector.h"


/* init vector structure */
void 
vector_init ( void ) 
{
    vector.count = 0;
    vector.alloc = 0;
    vector.layer = NULL;
}

/* allocate at least one free space for layer */
void 
vector_alloc ( void )
{
    if ( vector.count == vector.alloc ) {
	vector.alloc += 20;
	vector.layer = (LAYER *) G_realloc ( vector.layer, vector.alloc * sizeof (LAYER) );
    }
}