Public Member Functions | Protected Member Functions | Protected Attributes | Friends | List of all members
b2PulleyJoint Class Reference

#include <b2PulleyJoint.h>

Inheritance diagram for b2PulleyJoint:
Inheritance graph
[legend]

Public Member Functions

void Dump ()
 Dump joint to dmLog. More...
 
b2Vec2 GetAnchorA () const
 Get the anchor point on bodyA in world coordinates. More...
 
b2Vec2 GetAnchorB () const
 Get the anchor point on bodyB in world coordinates. More...
 
float32 GetCurrentLengthA () const
 Get the current length of the segment attached to bodyA. More...
 
float32 GetCurrentLengthB () const
 Get the current length of the segment attached to bodyB. More...
 
b2Vec2 GetGroundAnchorA () const
 Get the first ground anchor. More...
 
b2Vec2 GetGroundAnchorB () const
 Get the second ground anchor. More...
 
float32 GetLengthA () const
 Get the current length of the segment attached to bodyA. More...
 
float32 GetLengthB () const
 Get the current length of the segment attached to bodyB. More...
 
float32 GetRatio () const
 Get the pulley ratio. More...
 
b2Vec2 GetReactionForce (float32 inv_dt) const
 Get the reaction force on bodyB at the joint anchor in Newtons. More...
 
float32 GetReactionTorque (float32 inv_dt) const
 Get the reaction torque on bodyB in N*m. More...
 
void ShiftOrigin (const b2Vec2 &newOrigin)
 Implement b2Joint::ShiftOrigin. More...
 
- Public Member Functions inherited from b2Joint
b2BodyGetBodyA ()
 Get the first body attached to this joint. More...
 
b2BodyGetBodyB ()
 Get the second body attached to this joint. More...
 
bool GetCollideConnected () const
 
b2JointGetNext ()
 Get the next joint the world joint list. More...
 
const b2JointGetNext () const
 
b2JointType GetType () const
 Get the type of the concrete joint. More...
 
voidGetUserData () const
 Get the user data pointer. More...
 
bool IsActive () const
 Short-cut function to determine if either body is inactive. More...
 
void SetUserData (void *data)
 Set the user data pointer. More...
 

Protected Member Functions

 b2PulleyJoint (const b2PulleyJointDef *data)
 
void InitVelocityConstraints (const b2SolverData &data)
 
bool SolvePositionConstraints (const b2SolverData &data)
 
void SolveVelocityConstraints (const b2SolverData &data)
 
- Protected Member Functions inherited from b2Joint
 b2Joint (const b2JointDef *def)
 
virtual ~b2Joint ()
 

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
 
- Protected Attributes inherited from b2Joint
b2Bodym_bodyA
 
b2Bodym_bodyB
 
bool m_collideConnected
 
b2JointEdge m_edgeA
 
b2JointEdge m_edgeB
 
int32 m_index
 
bool m_islandFlag
 
b2Jointm_next
 
b2Jointm_prev
 
b2JointType m_type
 
voidm_userData
 

Friends

class b2Joint
 

Additional Inherited Members

- Static Protected Member Functions inherited from b2Joint
static b2JointCreate (const b2JointDef *def, b2BlockAllocator *allocator)
 
static void Destroy (b2Joint *joint, b2BlockAllocator *allocator)
 

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.

float32 b2PulleyJoint::GetCurrentLengthA ( ) const

Get the current length of the segment attached to bodyA.

Definition at line 309 of file b2PulleyJoint.cpp.

float32 b2PulleyJoint::GetCurrentLengthB ( ) const

Get the current length of the segment attached to bodyB.

Definition at line 317 of file b2PulleyJoint.cpp.

b2Vec2 b2PulleyJoint::GetGroundAnchorA ( ) const

Get the first ground anchor.

Definition at line 284 of file b2PulleyJoint.cpp.

b2Vec2 b2PulleyJoint::GetGroundAnchorB ( ) const

Get the second ground anchor.

Definition at line 289 of file b2PulleyJoint.cpp.

float32 b2PulleyJoint::GetLengthA ( ) const

Get the current length of the segment attached to bodyA.

Definition at line 294 of file b2PulleyJoint.cpp.

float32 b2PulleyJoint::GetLengthB ( ) const

Get the current length of the segment attached to bodyB.

Definition at line 299 of file b2PulleyJoint.cpp.

float32 b2PulleyJoint::GetRatio ( ) const

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)
protectedvirtual

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)
protectedvirtual

Implements b2Joint.

Definition at line 190 of file b2PulleyJoint.cpp.

void b2PulleyJoint::SolveVelocityConstraints ( const b2SolverData data)
protectedvirtual

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

float32 b2PulleyJoint::m_constant
protected

Definition at line 132 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_groundAnchorA
protected

Definition at line 124 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_groundAnchorB
protected

Definition at line 125 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_impulse
protected

Definition at line 134 of file b2PulleyJoint.h.

int32 b2PulleyJoint::m_indexA
protected

Definition at line 137 of file b2PulleyJoint.h.

int32 b2PulleyJoint::m_indexB
protected

Definition at line 138 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_invIA
protected

Definition at line 147 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_invIB
protected

Definition at line 148 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_invMassA
protected

Definition at line 145 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_invMassB
protected

Definition at line 146 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_lengthA
protected

Definition at line 126 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_lengthB
protected

Definition at line 127 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_localAnchorA
protected

Definition at line 130 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_localAnchorB
protected

Definition at line 131 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_localCenterA
protected

Definition at line 143 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_localCenterB
protected

Definition at line 144 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_mass
protected

Definition at line 149 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_rA
protected

Definition at line 141 of file b2PulleyJoint.h.

float32 b2PulleyJoint::m_ratio
protected

Definition at line 133 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_rB
protected

Definition at line 142 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_uA
protected

Definition at line 139 of file b2PulleyJoint.h.

b2Vec2 b2PulleyJoint::m_uB
protected

Definition at line 140 of file b2PulleyJoint.h.


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


mvsim
Author(s):
autogenerated on Fri May 7 2021 03:05:52