java.lang.Object
- org.jbox2d.dynamics.joints.Joint
- - org.jbox2d.dynamics.joints.FrictionJoint

public class FrictionJoint
extends Joint

Field Summary

Fields
Modifier and Type	Field	Description
`private float`	`m_angularImpulse`
`private float`	`m_angularMass`
`private int`	`m_indexA`
`private int`	`m_indexB`
`private float`	`m_invIA`
`private float`	`m_invIB`
`private float`	`m_invMassA`
`private float`	`m_invMassB`
`private Vec2`	`m_linearImpulse`
`private Mat22`	`m_linearMass`
`private Vec2`	`m_localAnchorA`
`private Vec2`	`m_localAnchorB`
`private Vec2`	`m_localCenterA`
`private Vec2`	`m_localCenterB`
`private float`	`m_maxForce`
`private float`	`m_maxTorque`
`private Vec2`	`m_rA`
`private Vec2`	`m_rB`

Fields inherited from class org.jbox2d.dynamics.joints.Joint
m_bodyA, m_bodyB, m_edgeA, m_edgeB, m_islandFlag, m_next, m_prev, m_userData, pool

Constructor Summary

Constructors
Modifier Constructor Description

protected FrictionJoint(IWorldPool argWorldPool, FrictionJointDef def)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`getAnchorA(Vec2 argOut)`	get the anchor point on bodyA in world coordinates.
`void`	`getAnchorB(Vec2 argOut)`	get the anchor point on bodyB in world coordinates.
`Vec2`	`getLocalAnchorA()`
`Vec2`	`getLocalAnchorB()`
`float`	`getMaxForce()`
`float`	`getMaxTorque()`
`void`	`getReactionForce(float inv_dt, Vec2 argOut)`	get the reaction force on body2 at the joint anchor in Newtons.
`float`	`getReactionTorque(float inv_dt)`	get the reaction torque on body2 in N*m.
`void`	`initVelocityConstraints(SolverData data)`
`void`	`setMaxForce(float force)`
`void`	`setMaxTorque(float torque)`
`boolean`	`solvePositionConstraints(SolverData data)`	This returns true if the position errors are within tolerance.
`void`	`solveVelocityConstraints(SolverData data)`

Methods inherited from class org.jbox2d.dynamics.joints.Joint
create, destroy, destructor, getBodyA, getBodyB, getCollideConnected, getNext, getType, getUserData, isActive, setUserData

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

m_localAnchorA
```
private final Vec2 m_localAnchorA
```

m_localAnchorB
```
private final Vec2 m_localAnchorB
```

m_linearImpulse
```
private final Vec2 m_linearImpulse
```

m_angularImpulse
```
private float m_angularImpulse
```

m_maxForce
```
private float m_maxForce
```

m_maxTorque
```
private float m_maxTorque
```

m_indexA
```
private int m_indexA
```

m_indexB
```
private int m_indexB
```

m_rA
```
private final Vec2 m_rA
```

m_rB
```
private final Vec2 m_rB
```

m_localCenterA
```
private final Vec2 m_localCenterA
```

m_localCenterB
```
private final Vec2 m_localCenterB
```

m_invMassA
```
private float m_invMassA
```

m_invMassB
```
private float m_invMassB
```

m_invIA
```
private float m_invIA
```

m_invIB
```
private float m_invIB
```

m_linearMass
```
private final Mat22 m_linearMass
```

m_angularMass
```
private float m_angularMass
```

Constructor Detail

FrictionJoint

protected FrictionJoint(IWorldPool argWorldPool,
                        FrictionJointDef def)

Method Detail
- getLocalAnchorA
```
public Vec2 getLocalAnchorA()
```
- getLocalAnchorB
```
public Vec2 getLocalAnchorB()
```
- getAnchorA
```
public void getAnchorA(Vec2 argOut)
```
  Description copied from class: Joint
  
  get the anchor point on bodyA in world coordinates.
  
  Specified by:
  
  getAnchorA in class Joint
- getAnchorB
```
public void getAnchorB(Vec2 argOut)
```
  Description copied from class: Joint
  
  get the anchor point on bodyB in world coordinates.
  
  Specified by:
  
  getAnchorB in class Joint
- getReactionForce
```
public void getReactionForce(float inv_dt,
                             Vec2 argOut)
```
  Description copied from class: Joint
  
  get the reaction force on body2 at the joint anchor in Newtons.
  
  Specified by:
  
  getReactionForce in class Joint
- getReactionTorque
```
public float getReactionTorque(float inv_dt)
```
  Description copied from class: Joint
  
  get the reaction torque on body2 in N*m.
  
  Specified by:
  
  getReactionTorque in class Joint
  
  Returns:
- setMaxForce
```
public void setMaxForce(float force)
```
- getMaxForce
```
public float getMaxForce()
```
- setMaxTorque
```
public void setMaxTorque(float torque)
```
- getMaxTorque
```
public float getMaxTorque()
```
- initVelocityConstraints
```
public void initVelocityConstraints(SolverData data)
```
  Specified by:
  
  initVelocityConstraints in class Joint
  
  See Also:
  
  org.jbox2d.dynamics.joints.Joint#initVelocityConstraints(org.jbox2d.dynamics.TimeStep)
- solveVelocityConstraints
```
public void solveVelocityConstraints(SolverData data)
```
  Specified by:
  
  solveVelocityConstraints in class Joint
- solvePositionConstraints
```
public boolean solvePositionConstraints(SolverData data)
```
  Description copied from class: Joint
  
  This returns true if the position errors are within tolerance.
  
  Specified by:
  
  solvePositionConstraints in class Joint
  
  Returns:

Class FrictionJoint

Field Summary

Fields inherited from class org.jbox2d.dynamics.joints.Joint

Constructor Summary

Method Summary

Methods inherited from class org.jbox2d.dynamics.joints.Joint

Methods inherited from class java.lang.Object

Field Detail

m_localAnchorA

m_localAnchorB

m_linearImpulse

m_angularImpulse

m_maxForce

m_maxTorque

m_indexA

m_indexB

m_rA

m_rB

m_localCenterA

m_localCenterB

m_invMassA

m_invMassB

m_invIA

m_invIB

m_linearMass

m_angularMass

Constructor Detail

FrictionJoint

Method Detail

getLocalAnchorA

getLocalAnchorB

getAnchorA

getAnchorB

getReactionForce

getReactionTorque

setMaxForce

getMaxForce

setMaxTorque

getMaxTorque

initVelocityConstraints

solveVelocityConstraints

solvePositionConstraints