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java.lang.Objectorg.jbox2d.dynamics.joints.Joint
org.jbox2d.dynamics.joints.DistanceJoint
public class DistanceJoint
A distance joint constrains two points on two bodies to remain at a fixed distance from each other. You can view this as a massless, rigid rod.
| Field Summary |
|---|
| 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 | |
|---|---|
protected |
DistanceJoint(IWorldPool argWorld,
DistanceJointDef def)
|
| Method Summary | |
|---|---|
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. |
float |
getDampingRatio()
|
float |
getFrequency()
|
float |
getLength()
|
Vec2 |
getLocalAnchorA()
|
Vec2 |
getLocalAnchorB()
|
void |
getReactionForce(float inv_dt,
Vec2 argOut)
Get the reaction force given the inverse time step. |
float |
getReactionTorque(float inv_dt)
Get the reaction torque given the inverse time step. |
void |
initVelocityConstraints(SolverData data)
|
void |
setDampingRatio(float damp)
|
void |
setFrequency(float hz)
|
void |
setLength(float argLength)
|
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 |
| Constructor Detail |
|---|
protected DistanceJoint(IWorldPool argWorld,
DistanceJointDef def)
| Method Detail |
|---|
public void setFrequency(float hz)
public float getFrequency()
public float getLength()
public void setLength(float argLength)
public void setDampingRatio(float damp)
public float getDampingRatio()
public void getAnchorA(Vec2 argOut)
Joint
getAnchorA in class Jointpublic void getAnchorB(Vec2 argOut)
Joint
getAnchorB in class Jointpublic Vec2 getLocalAnchorA()
public Vec2 getLocalAnchorB()
public void getReactionForce(float inv_dt,
Vec2 argOut)
getReactionForce in class Jointpublic float getReactionTorque(float inv_dt)
getReactionTorque in class Jointpublic void initVelocityConstraints(SolverData data)
initVelocityConstraints in class Jointpublic void solveVelocityConstraints(SolverData data)
solveVelocityConstraints in class Jointpublic boolean solvePositionConstraints(SolverData data)
Joint
solvePositionConstraints in class Joint
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