C# Class Project290.Physics.Dynamics.Joints.PulleyJoint

The pulley joint is connected to two bodies and two fixed ground points. The pulley supports a ratio such that: length1 + ratio * length2 = ant Yes, the force transmitted is scaled by the ratio. The pulley also enforces a maximum length limit on both sides. This is useful to prevent one side of the pulley hitting the top.

Inheritance: Joint

Show file Open project: scastle/Solitude Class Usage Examples

Public Properties

Property	Type	Description
GroundAnchorA	Vector2
GroundAnchorB	Vector2
LocalAnchorA	Vector2
LocalAnchorB	Vector2
MinPulleyLength	float

Public Methods

Method	Description
GetReactionForce ( float inv_dt ) : Vector2
GetReactionTorque ( float inv_dt ) : float
PulleyJoint ( Body bodyA, Body bodyB, Vector2 groundAnchorA, Vector2 groundAnchorB, Vector2 localAnchorA, Vector2 localAnchorB, float ratio ) : System	Initialize the bodies, anchors, lengths, max lengths, and ratio using the world anchors. This requires two ground anchors, two dynamic body anchor points, max lengths for each side, and a pulley ratio.

Private Methods

Method	Description
InitVelocityConstraints ( TimeStep &step ) : void
SolvePositionConstraints ( ) : bool
SolveVelocityConstraints ( TimeStep &step ) : void

Method Details

GetReactionForce() public method

public GetReactionForce ( float inv_dt ) : Vector2
inv_dt	float
return	Vector2

GetReactionTorque() public method

public GetReactionTorque ( float inv_dt ) : float
inv_dt	float
return	float

PulleyJoint() public method

Initialize the bodies, anchors, lengths, max lengths, and ratio using the world anchors. This requires two ground anchors, two dynamic body anchor points, max lengths for each side, and a pulley ratio.

public PulleyJoint ( Body bodyA, Body bodyB, Vector2 groundAnchorA, Vector2 groundAnchorB, Vector2 localAnchorA, Vector2 localAnchorB, float ratio ) : System
bodyA	Body	The first body.
bodyB	Body	The second body.
groundAnchorA	Vector2	The ground anchor for the first body.
groundAnchorB	Vector2	The ground anchor for the second body.
localAnchorA	Vector2	The first body anchor.
localAnchorB	Vector2	The second body anchor.
ratio	float	The ratio.
return	System

Property Details

GroundAnchorA public property

Get the first ground anchor.

public Vector2 GroundAnchorA
return	Vector2

GroundAnchorB public property

Get the second ground anchor.

public Vector2 GroundAnchorB
return	Vector2

LocalAnchorA public property

public Vector2 LocalAnchorA
return	Vector2

LocalAnchorB public property

public Vector2 LocalAnchorB
return	Vector2

MinPulleyLength public property

public float MinPulleyLength
return	float