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

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* Copyright (c) 2006-2011 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.
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* 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.
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*    misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.


// Module
#include "Joint.h"

namespace love
namespace physics
namespace box2d
	* The PulleyJoint The pulley connects two bodies to ground and 
	* to each other. As one body goes up, the other goes down. The 
	* total length of the pulley rope is conserved according to the 
	* initial configuration: length1 + ratio * length2 <= constant.
	class PulleyJoint : public Joint
		// The Box2D DistanceJoint object.
		b2PulleyJoint * joint;

		* Creates a PulleyJoint connecting bodyA to bodyB. 
		PulleyJoint(Body * bodyA, Body * bodyB, b2Vec2 groundAnchorA, b2Vec2 groundAnchorB, b2Vec2 anchorA, b2Vec2 anchorB, float ratio, bool collideConnected);
		virtual ~PulleyJoint();
		* Gets the ground anchors position in world
		* coordinates.
		int getGroundAnchors(lua_State * L);
		* Gets the current length of the segment attached to bodyA.
		float getLengthA() const;
		* Gets the current length of the segment attached to bodyB.
		float getLengthB() const;
		* Gets the pulley ratio.
		float getRatio() const;

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