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Box2D
2.2.1
Box2D API Reference for Kobold2D developers
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#include <b2RopeJoint.h>
Inheritance diagram for b2RopeJoint: Collaboration diagram for b2RopeJoint: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. | |
| 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. | |
| 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. | |
| void | SetMaxLength (float32 length) |
| Set/Get the maximum length of the rope. | |
| float32 | GetMaxLength () const |
| b2LimitState | GetLimitState () const |
| void | Dump () |
| Dump joint to dmLog. | |
Protected Member Functions | |
| b2RopeJoint (const b2RopeJointDef *data) | |
| void | InitVelocityConstraints (const b2SolverData &data) |
| void | SolveVelocityConstraints (const b2SolverData &data) |
| bool | SolvePositionConstraints (const b2SolverData &data) |
Protected Attributes | |
| b2Vec2 | m_localAnchorA |
| b2Vec2 | m_localAnchorB |
| float32 | m_maxLength |
| float32 | m_length |
| float32 | m_impulse |
| int32 | m_indexA |
| int32 | m_indexB |
| b2Vec2 | m_u |
| b2Vec2 | m_rA |
| b2Vec2 | m_rB |
| b2Vec2 | m_localCenterA |
| b2Vec2 | m_localCenterB |
| float32 | m_invMassA |
| float32 | m_invMassB |
| float32 | m_invIA |
| float32 | m_invIB |
| float32 | m_mass |
| b2LimitState | m_state |
Friends | |
| class | b2Joint |
A rope joint enforces a maximum distance between two points on two bodies. It has no other effect. Warning: if you attempt to change the maximum length during the simulation you will get some non-physical behavior. A model that would allow you to dynamically modify the length would have some sponginess, so I chose not to implement it that way. See b2DistanceJoint if you want to dynamically control length.
| void b2RopeJoint::Dump | ( | ) | [virtual] |
Dump joint to dmLog.
Reimplemented from b2Joint.
| b2Vec2 b2RopeJoint::GetAnchorA | ( | ) | const [virtual] |
Get the anchor point on bodyA in world coordinates.
Implements b2Joint.
| b2Vec2 b2RopeJoint::GetAnchorB | ( | ) | const [virtual] |
Get the anchor point on bodyB in world coordinates.
Implements b2Joint.
| const b2Vec2& b2RopeJoint::GetLocalAnchorA | ( | ) | const [inline] |
The local anchor point relative to bodyA's origin.
| const b2Vec2& b2RopeJoint::GetLocalAnchorB | ( | ) | const [inline] |
The local anchor point relative to bodyB's origin.
| b2Vec2 b2RopeJoint::GetReactionForce | ( | float32 | inv_dt | ) | const [virtual] |
Get the reaction force on bodyB at the joint anchor in Newtons.
Implements b2Joint.
| float32 b2RopeJoint::GetReactionTorque | ( | float32 | inv_dt | ) | const [virtual] |
Get the reaction torque on bodyB in N*m.
Implements b2Joint.
| void b2RopeJoint::SetMaxLength | ( | float32 | length | ) | [inline] |
Set/Get the maximum length of the rope.
1.7.5 
