Package org.jbox2d.dynamics.joints
Class FrictionJoint
- java.lang.Object
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- org.jbox2d.dynamics.joints.Joint
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- org.jbox2d.dynamics.joints.FrictionJoint
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public class FrictionJoint extends Joint
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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
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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
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Constructor Summary
Constructors Modifier Constructor Description protected
FrictionJoint(IWorldPool argWorldPool, FrictionJointDef def)
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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)
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Methods inherited from class org.jbox2d.dynamics.joints.Joint
create, destroy, destructor, getBodyA, getBodyB, getCollideConnected, getNext, getType, getUserData, isActive, setUserData
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Field Detail
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m_localAnchorA
private final Vec2 m_localAnchorA
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m_localAnchorB
private final Vec2 m_localAnchorB
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m_linearImpulse
private final Vec2 m_linearImpulse
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m_angularImpulse
private float m_angularImpulse
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m_maxForce
private float m_maxForce
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m_maxTorque
private float m_maxTorque
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m_indexA
private int m_indexA
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m_indexB
private int m_indexB
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m_rA
private final Vec2 m_rA
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m_rB
private final Vec2 m_rB
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m_localCenterA
private final Vec2 m_localCenterA
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m_localCenterB
private final Vec2 m_localCenterB
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m_invMassA
private float m_invMassA
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m_invMassB
private float m_invMassB
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m_invIA
private float m_invIA
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m_invIB
private float m_invIB
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m_linearMass
private final Mat22 m_linearMass
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m_angularMass
private float m_angularMass
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Constructor Detail
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FrictionJoint
protected FrictionJoint(IWorldPool argWorldPool, FrictionJointDef def)
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Method Detail
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getLocalAnchorA
public Vec2 getLocalAnchorA()
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getLocalAnchorB
public Vec2 getLocalAnchorB()
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getAnchorA
public void getAnchorA(Vec2 argOut)
Description copied from class:Joint
get the anchor point on bodyA in world coordinates.- Specified by:
getAnchorA
in classJoint
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getAnchorB
public void getAnchorB(Vec2 argOut)
Description copied from class:Joint
get the anchor point on bodyB in world coordinates.- Specified by:
getAnchorB
in classJoint
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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 classJoint
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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 classJoint
- Returns:
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setMaxForce
public void setMaxForce(float force)
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getMaxForce
public float getMaxForce()
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setMaxTorque
public void setMaxTorque(float torque)
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getMaxTorque
public float getMaxTorque()
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initVelocityConstraints
public void initVelocityConstraints(SolverData data)
- Specified by:
initVelocityConstraints
in classJoint
- See Also:
org.jbox2d.dynamics.joints.Joint#initVelocityConstraints(org.jbox2d.dynamics.TimeStep)
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solveVelocityConstraints
public void solveVelocityConstraints(SolverData data)
- Specified by:
solveVelocityConstraints
in classJoint
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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 classJoint
- Returns:
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