Public Member Functions | Protected Member Functions | Protected Attributes | Friends
b2PulleyJoint Class Reference

#include <b2PulleyJoint.h>

Inheritance diagram for b2PulleyJoint:
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List of all members.

Public Member Functions

void Dump ()
 Dump joint to dmLog.
b2Vec2 GetAnchorA () const
 Get the anchor point on bodyA in world coordinates.
b2Vec2 GetAnchorB () const
 Get the anchor point on bodyB in world coordinates.
float32 GetCurrentLengthA () const
 Get the current length of the segment attached to bodyA.
float32 GetCurrentLengthB () const
 Get the current length of the segment attached to bodyB.
b2Vec2 GetGroundAnchorA () const
 Get the first ground anchor.
b2Vec2 GetGroundAnchorB () const
 Get the second ground anchor.
float32 GetLengthA () const
 Get the current length of the segment attached to bodyA.
float32 GetLengthB () const
 Get the current length of the segment attached to bodyB.
float32 GetRatio () const
 Get the pulley ratio.
b2Vec2 GetReactionForce (float32 inv_dt) const
 Get the reaction force on bodyB at the joint anchor in Newtons.
float32 GetReactionTorque (float32 inv_dt) const
 Get the reaction torque on bodyB in N*m.
void ShiftOrigin (const b2Vec2 &newOrigin)
 Implement b2Joint::ShiftOrigin.

Protected Member Functions

 b2PulleyJoint (const b2PulleyJointDef *data)
void InitVelocityConstraints (const b2SolverData &data)
bool SolvePositionConstraints (const b2SolverData &data)
void SolveVelocityConstraints (const b2SolverData &data)

Protected Attributes

float32 m_constant
b2Vec2 m_groundAnchorA
b2Vec2 m_groundAnchorB
float32 m_impulse
int32 m_indexA
int32 m_indexB
float32 m_invIA
float32 m_invIB
float32 m_invMassA
float32 m_invMassB
float32 m_lengthA
float32 m_lengthB
b2Vec2 m_localAnchorA
b2Vec2 m_localAnchorB
b2Vec2 m_localCenterA
b2Vec2 m_localCenterB
float32 m_mass
b2Vec2 m_rA
float32 m_ratio
b2Vec2 m_rB
b2Vec2 m_uA
b2Vec2 m_uB

Friends

class b2Joint

Detailed Description

The pulley joint is connected to two bodies and two fixed ground points. The pulley supports a ratio such that: length1 + ratio * length2 <= constant Yes, the force transmitted is scaled by the ratio. Warning: the pulley joint can get a bit squirrelly by itself. They often work better when combined with prismatic joints. You should also cover the the anchor points with static shapes to prevent one side from going to zero length.

Definition at line 79 of file b2PulleyJoint.h.


Constructor & Destructor Documentation

b2PulleyJoint::b2PulleyJoint ( const b2PulleyJointDef data) [protected]

Definition at line 54 of file b2PulleyJoint.cpp.


Member Function Documentation

void b2PulleyJoint::Dump ( ) [virtual]

Dump joint to dmLog.

Reimplemented from b2Joint.

Definition at line 325 of file b2PulleyJoint.cpp.

b2Vec2 b2PulleyJoint::GetAnchorA ( ) const [virtual]

Get the anchor point on bodyA in world coordinates.

Implements b2Joint.

Definition at line 262 of file b2PulleyJoint.cpp.

b2Vec2 b2PulleyJoint::GetAnchorB ( ) const [virtual]

Get the anchor point on bodyB in world coordinates.

Implements b2Joint.

Definition at line 267 of file b2PulleyJoint.cpp.

Get the current length of the segment attached to bodyA.

Definition at line 309 of file b2PulleyJoint.cpp.

Get the current length of the segment attached to bodyB.

Definition at line 317 of file b2PulleyJoint.cpp.

Get the first ground anchor.

Definition at line 284 of file b2PulleyJoint.cpp.

Get the second ground anchor.

Definition at line 289 of file b2PulleyJoint.cpp.

Get the current length of the segment attached to bodyA.

Definition at line 294 of file b2PulleyJoint.cpp.

Get the current length of the segment attached to bodyB.

Definition at line 299 of file b2PulleyJoint.cpp.

Get the pulley ratio.

Definition at line 304 of file b2PulleyJoint.cpp.

b2Vec2 b2PulleyJoint::GetReactionForce ( float32  inv_dt) const [virtual]

Get the reaction force on bodyB at the joint anchor in Newtons.

Implements b2Joint.

Definition at line 272 of file b2PulleyJoint.cpp.

float32 b2PulleyJoint::GetReactionTorque ( float32  inv_dt) const [virtual]

Get the reaction torque on bodyB in N*m.

Implements b2Joint.

Definition at line 278 of file b2PulleyJoint.cpp.

void b2PulleyJoint::InitVelocityConstraints ( const b2SolverData data) [protected, virtual]

Implements b2Joint.

Definition at line 73 of file b2PulleyJoint.cpp.

void b2PulleyJoint::ShiftOrigin ( const b2Vec2 newOrigin) [virtual]

Implement b2Joint::ShiftOrigin.

Reimplemented from b2Joint.

Definition at line 344 of file b2PulleyJoint.cpp.

bool b2PulleyJoint::SolvePositionConstraints ( const b2SolverData data) [protected, virtual]

Implements b2Joint.

Definition at line 190 of file b2PulleyJoint.cpp.

void b2PulleyJoint::SolveVelocityConstraints ( const b2SolverData data) [protected, virtual]

Implements b2Joint.

Definition at line 163 of file b2PulleyJoint.cpp.


Friends And Related Function Documentation

friend class b2Joint [friend]

Definition at line 117 of file b2PulleyJoint.h.


Member Data Documentation

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Definition at line 140 of file b2PulleyJoint.h.


The documentation for this class was generated from the following files:


mvsim
Author(s):
autogenerated on Thu Jun 6 2019 22:08:35