|  | Box2D
    2.3.0
    A 2D Physics Engine for Games | 
#include <b2RevoluteJoint.h>
 
  
| Public Member Functions | |
| b2Vec2 | GetAnchorA () const | 
| Get the anchor point on bodyA in world coordinates. | |
| b2Vec2 | GetAnchorB () const | 
| Get the anchor point on bodyB in world coordinates. | |
| const b2Vec2 & | GetLocalAnchorA () const | 
| The local anchor point relative to bodyA's origin. | |
| const b2Vec2 & | GetLocalAnchorB () const | 
| The local anchor point relative to bodyB's origin. | |
| float32 | GetReferenceAngle () const | 
| Get the reference angle. | |
| float32 | GetJointAngle () const | 
| Get the current joint angle in radians. | |
| float32 | GetJointSpeed () const | 
| Get the current joint angle speed in radians per second. | |
| bool | IsLimitEnabled () const | 
| Is the joint limit enabled? | |
| void | EnableLimit (bool flag) | 
| Enable/disable the joint limit. | |
| float32 | GetLowerLimit () const | 
| Get the lower joint limit in radians. | |
| float32 | GetUpperLimit () const | 
| Get the upper joint limit in radians. | |
| void | SetLimits (float32 lower, float32 upper) | 
| Set the joint limits in radians. | |
| bool | IsMotorEnabled () const | 
| Is the joint motor enabled? | |
| void | EnableMotor (bool flag) | 
| Enable/disable the joint motor. | |
| void | SetMotorSpeed (float32 speed) | 
| Set the motor speed in radians per second. | |
| float32 | GetMotorSpeed () const | 
| Get the motor speed in radians per second. | |
| void | SetMaxMotorTorque (float32 torque) | 
| Set the maximum motor torque, usually in N-m. | |
| float32 | GetMaxMotorTorque () const | 
| b2Vec2 | GetReactionForce (float32 inv_dt) const | 
| float32 | GetReactionTorque (float32 inv_dt) const | 
| float32 | GetMotorTorque (float32 inv_dt) const | 
| void | Dump () | 
| Dump to b2Log. | |
|  Public Member Functions inherited from b2Joint | |
| b2JointType | GetType () const | 
| Get the type of the concrete joint. | |
| b2Body * | GetBodyA () | 
| Get the first body attached to this joint. | |
| b2Body * | GetBodyB () | 
| Get the second body attached to this joint. | |
| b2Joint * | GetNext () | 
| Get the next joint the world joint list. | |
| const b2Joint * | GetNext () const | 
| void * | GetUserData () const | 
| Get the user data pointer. | |
| void | SetUserData (void *data) | 
| Set the user data pointer. | |
| bool | IsActive () const | 
| Short-cut function to determine if either body is inactive. | |
| bool | GetCollideConnected () const | 
| virtual void | ShiftOrigin (const b2Vec2 &newOrigin) | 
| Shift the origin for any points stored in world coordinates. | |
| Protected Member Functions | |
| b2RevoluteJoint (const b2RevoluteJointDef *def) | |
| void | InitVelocityConstraints (const b2SolverData &data) | 
| void | SolveVelocityConstraints (const b2SolverData &data) | 
| bool | SolvePositionConstraints (const b2SolverData &data) | 
|  Protected Member Functions inherited from b2Joint | |
| b2Joint (const b2JointDef *def) | |
| Protected Attributes | |
| b2Vec2 | m_localAnchorA | 
| b2Vec2 | m_localAnchorB | 
| b2Vec3 | m_impulse | 
| float32 | m_motorImpulse | 
| bool | m_enableMotor | 
| float32 | m_maxMotorTorque | 
| float32 | m_motorSpeed | 
| bool | m_enableLimit | 
| float32 | m_referenceAngle | 
| float32 | m_lowerAngle | 
| float32 | m_upperAngle | 
| int32 | m_indexA | 
| int32 | m_indexB | 
| b2Vec2 | m_rA | 
| b2Vec2 | m_rB | 
| b2Vec2 | m_localCenterA | 
| b2Vec2 | m_localCenterB | 
| float32 | m_invMassA | 
| float32 | m_invMassB | 
| float32 | m_invIA | 
| float32 | m_invIB | 
| b2Mat33 | m_mass | 
| float32 | m_motorMass | 
| b2LimitState | m_limitState | 
|  Protected Attributes inherited from b2Joint | |
| b2JointType | m_type | 
| b2Joint * | m_prev | 
| b2Joint * | m_next | 
| b2JointEdge | m_edgeA | 
| b2JointEdge | m_edgeB | 
| b2Body * | m_bodyA | 
| b2Body * | m_bodyB | 
| int32 | m_index | 
| bool | m_islandFlag | 
| bool | m_collideConnected | 
| void * | m_userData | 
| Friends | |
| class | b2Joint | 
| class | b2GearJoint | 
| Additional Inherited Members | |
|  Static Protected Member Functions inherited from b2Joint | |
| static b2Joint * | Create (const b2JointDef *def, b2BlockAllocator *allocator) | 
| static void | Destroy (b2Joint *joint, b2BlockAllocator *allocator) | 
A revolute joint constrains two bodies to share a common point while they are free to rotate about the point. The relative rotation about the shared point is the joint angle. You can limit the relative rotation with a joint limit that specifies a lower and upper angle. You can use a motor to drive the relative rotation about the shared point. A maximum motor torque is provided so that infinite forces are not generated.
| float32 b2RevoluteJoint::GetMotorTorque | ( | float32 | inv_dt | ) | const | 
Get the current motor torque given the inverse time step. Unit is N*m.
| 
 | virtual | 
Get the reaction force given the inverse time step. Unit is N.
Implements b2Joint.
| 
 | virtual | 
Get the reaction torque due to the joint limit given the inverse time step. Unit is N*m.
Implements b2Joint.
 1.8.17
 1.8.17