/***********************************************************************
* pc_pointlist.c
*
*  Point list handling. Create, get and set values from the
*  basic PCPOINTLIST structure.
*
* Portions Copyright (c) 2012, OpenGeo
*
***********************************************************************/

#include "pc_api_internal.h"

PCPOINTLIST *
pc_pointlist_make(uint32_t npoints)
{
	PCPOINTLIST *pl = pcalloc(sizeof(PCPOINTLIST));
	pl->points = pcalloc(sizeof(PCPOINT*) * npoints);
	pl->maxpoints = npoints;
	pl->npoints = 0;
	pl->readonly = PC_FALSE;
	return pl;
}

void
pc_pointlist_free(PCPOINTLIST *pl)
{
	int i;
	for ( i = 0; i < pl->npoints; i++ )
	{
		pc_point_free(pl->points[i]);
	}
	pcfree(pl->points);
	pcfree(pl);
	return;
}

void
pc_pointlist_add_point(PCPOINTLIST *pl, PCPOINT *pt)
{
	if ( pl->npoints >= pl->maxpoints )
	{
		if ( pl->maxpoints < 1 ) pl->maxpoints = 1;
		pl->maxpoints *= 2;
		pl->points = pcrealloc(pl->points, pl->maxpoints * sizeof(PCPOINT*));
	}
	
	pl->points[pl->npoints] = pt;
	pl->npoints += 1;
	return;
}