Box2D  2.4.1
A 2D physics engine for games
b2WeldJoint Class Reference

#include <b2_weld_joint.h>

Inheritance diagram for b2WeldJoint:

Public Member Functions

b2Vec2 GetAnchorA () const override
 Get the anchor point on bodyA in world coordinates.
b2Vec2 GetAnchorB () const override
 Get the anchor point on bodyB in world coordinates.
b2Vec2 GetReactionForce (float inv_dt) const override
 Get the reaction force on bodyB at the joint anchor in Newtons.
float GetReactionTorque (float inv_dt) const override
 Get the reaction torque on bodyB in N*m.
const b2Vec2GetLocalAnchorA () const
 The local anchor point relative to bodyA's origin.
const b2Vec2GetLocalAnchorB () const
 The local anchor point relative to bodyB's origin.
float GetReferenceAngle () const
 Get the reference angle.
void SetStiffness (float hz)
 Set/get stiffness in N*m.
float GetStiffness () const
void SetDamping (float damping)
 Set/get damping in N*m*s.
float GetDamping () const
void Dump () override
 Dump to b2Log.
- Public Member Functions inherited from b2Joint
b2JointType GetType () const
 Get the type of the concrete joint.
b2BodyGetBodyA ()
 Get the first body attached to this joint.
b2BodyGetBodyB ()
 Get the second body attached to this joint.
b2JointGetNext ()
 Get the next joint the world joint list.
const b2JointGetNext () const
b2JointUserDataGetUserData ()
 Get the user data pointer.
bool IsEnabled () const
 Short-cut function to determine if either body is enabled.
bool GetCollideConnected () const
virtual void ShiftOrigin (const b2Vec2 &newOrigin)
 Shift the origin for any points stored in world coordinates.
virtual void Draw (b2Draw *draw) const
 Debug draw this joint.

Protected Member Functions

 b2WeldJoint (const b2WeldJointDef *def)
void InitVelocityConstraints (const b2SolverData &data) override
void SolveVelocityConstraints (const b2SolverData &data) override
bool SolvePositionConstraints (const b2SolverData &data) override
- Protected Member Functions inherited from b2Joint
 b2Joint (const b2JointDef *def)

Protected Attributes

float m_stiffness
float m_damping
float m_bias
b2Vec2 m_localAnchorA
b2Vec2 m_localAnchorB
float m_referenceAngle
float m_gamma
b2Vec3 m_impulse
int32 m_indexA
int32 m_indexB
b2Vec2 m_rA
b2Vec2 m_rB
b2Vec2 m_localCenterA
b2Vec2 m_localCenterB
float m_invMassA
float m_invMassB
float m_invIA
float m_invIB
b2Mat33 m_mass
- Protected Attributes inherited from b2Joint
b2JointType m_type
b2JointEdge m_edgeA
b2JointEdge m_edgeB
int32 m_index
bool m_islandFlag
bool m_collideConnected
b2JointUserData m_userData


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

A weld joint essentially glues two bodies together. A weld joint may distort somewhat because the island constraint solver is approximate.

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