love / src / modules / physics / box2d / PolygonShape.h

/**
 * Copyright (c) 2006-2013 LOVE Development Team
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 **/

#ifndef LOVE_PHYSICS_BOX2D_POLYGON_SHAPE_H
#define LOVE_PHYSICS_BOX2D_POLYGON_SHAPE_H

// Module
#include "Shape.h"

namespace love
{
namespace physics
{
namespace box2d
{

/**
 * You should know what a Polygon is. :)
 *
 * This class is needed so that we can easily get
 * the transformed points in Lua. By calling shape:getPoints(),
 * the result can be passed directly to love.graphics.polygon().
 **/
class PolygonShape : public Shape
{
public:

	/**
	 * Create a new PolygonShape from a Box2D polygon definition.
	 * @param p The polygon definition.
	 **/
	PolygonShape(b2PolygonShape *p, bool own = true);

	virtual ~PolygonShape();

	/**
	 * Returns the transformed points of the polygon.
	 * This function is useful for debug drawing and such.
	 *
	 * The result can be directly passed into love.graphics.polygon().
	 **/
	int getPoints(lua_State *L);

	/**
	 * Validate convexity.
	 **/
	bool validate() const;
};

} // box2d
} // physics
} // love

#endif // LOVE_PHYSICS_BOX2D_POLYGON_SHAPE_H
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