/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

/*
 * This code is based on Broken Sword 2.5 engine
 *
 * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
 *
 * Licensed under GNU GPL v2
 *
 */

/*
    BS_Vertex
    ---------

    Autor: Malte Thiesen
*/

#ifndef SWORD25_VERTEX_H
#define SWORD25_VERTEX_H

// Includes
#include <math.h>
#include "common/rect.h"
#include "sword25/kernel/common.h"

struct lua_State;

#if defined(MACOSX) || defined(SOLARIS) || defined(__MINGW32__)
#define sqrtf(x)	((float)sqrt(x))
#endif

namespace Sword25 {

/**
 * Defines a 2-D Vertex
 */
class Vertex : public Common::Point {
public:
	Vertex() : Point() {}
	Vertex(int x_, int y_) : Point(x_, y_) {}
	Vertex(Point p) : Point(p) {}

	/**
	 * Calculates the square of the distance between two Vertecies.
	 * @param Vertex        The vertex for which the distance is to be calculated
	 * @return              Returns the square of the distance between itself and the passed vertex
	 * @remark              If only distances should be compared, sqrDist() should be used, since it is faster.
	 */
	inline int distance(const Vertex &vertex) const {
		return (int)(sqrtf(static_cast<float>(sqrDist(vertex))) + 0.5);
	}

	static Vertex &luaVertexToVertex(lua_State *L, int StackIndex, Vertex &vertex);
	static void vertexToLuaVertex(lua_State *L, const Vertex &vertex);
};

} // End of namespace Sword25

#endif