/*
 * Copyright (c) 2008-2009 Bill Whitacre http://rampancy.g0dsoft.com
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
*/

#include "hull_circle.h"

rat_hull *rat_hull_circle_create(vector2 center,rat_real radius)
{
	rat_hull_circle *hull=rat_alloc(sizeof(rat_hull_circle));
	memset(hull,0,sizeof(rat_hull_circle));

	rat_init_hull_classes();

	hull->type=rat_hull_type_circle;
	hull->clas=&rat_circle_class;

	hull->userdata=NULL;

	hull->center=center;
	hull->radius=radius;

	rat_hull_circle_update_cache((rat_hull *)hull,0);

	return (rat_hull *)hull;
}

void rat_hull_circle_destroy(rat_hull *hull) {}

void rat_hull_circle_update_cache(rat_hull *hull,int is_static)
{
	if (!is_static)
	{
		rat_hull_circle *circle=((rat_hull_circle *)hull);

		circle->cached_bb.a.x=circle->center.x-circle->radius;
		circle->cached_bb.a.y=circle->center.y-circle->radius;

		circle->cached_bb.b.x=circle->center.x+circle->radius;
		circle->cached_bb.b.y=circle->center.y+circle->radius;
	}
}

rat_real rat_hull_circle_get_angle(rat_hull *hull)
{
	return ((rat_hull_circle *)hull)->angle;
}

vector2 rat_hull_circle_get_center(rat_hull *hull)
{
	return ((rat_hull_circle *)hull)->center;
}

void rat_hull_circle_set_angle(rat_hull *hull,rat_real angle)
{
	((rat_hull_circle *)hull)->angle=angle;
}

void rat_hull_circle_set_center(rat_hull *hull,vector2 center)
{
	((rat_hull_circle *)hull)->center=center;
}

int rat_hull_circle_point_query(rat_hull *hull,vector2 point)
{
	return vector2_distance(((rat_hull_circle *)hull)->center,point)<((rat_hull_circle *)hull)->radius;
}