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Box2D
2.2.1
Box2D API Reference for Kobold2D developers
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#include <b2GearJoint.h>
Inheritance diagram for b2GearJoint: Collaboration diagram for b2GearJoint: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. | |
| b2Joint * | GetJoint1 () |
| Get the first joint. | |
| b2Joint * | GetJoint2 () |
| Get the second joint. | |
| void | SetRatio (float32 ratio) |
| Set/Get the gear ratio. | |
| float32 | GetRatio () const |
| void | Dump () |
| Dump joint to dmLog. | |
Protected Member Functions | |
| b2GearJoint (const b2GearJointDef *data) | |
| void | InitVelocityConstraints (const b2SolverData &data) |
| void | SolveVelocityConstraints (const b2SolverData &data) |
| bool | SolvePositionConstraints (const b2SolverData &data) |
Protected Attributes | |
| b2Joint * | m_joint1 |
| b2Joint * | m_joint2 |
| b2JointType | m_typeA |
| b2JointType | m_typeB |
| b2Body * | m_bodyC |
| b2Body * | m_bodyD |
| b2Vec2 | m_localAnchorA |
| b2Vec2 | m_localAnchorB |
| b2Vec2 | m_localAnchorC |
| b2Vec2 | m_localAnchorD |
| b2Vec2 | m_localAxisC |
| b2Vec2 | m_localAxisD |
| float32 | m_referenceAngleA |
| float32 | m_referenceAngleB |
| float32 | m_constant |
| float32 | m_ratio |
| float32 | m_impulse |
| int32 | m_indexA |
| int32 | m_indexB |
| int32 | m_indexC |
| int32 | m_indexD |
| b2Vec2 | m_lcA |
| b2Vec2 | m_lcB |
| b2Vec2 | m_lcC |
| b2Vec2 | m_lcD |
| float32 | m_mA |
| float32 | m_mB |
| float32 | m_mC |
| float32 | m_mD |
| float32 | m_iA |
| float32 | m_iB |
| float32 | m_iC |
| float32 | m_iD |
| b2Vec2 | m_JvAC |
| b2Vec2 | m_JvBD |
| float32 | m_JwA |
| float32 | m_JwB |
| float32 | m_JwC |
| float32 | m_JwD |
| float32 | m_mass |
Friends | |
| class | b2Joint |
A gear joint is used to connect two joints together. Either joint can be a revolute or prismatic joint. You specify a gear ratio to bind the motions together: coordinate1 + ratio * coordinate2 = constant The ratio can be negative or positive. If one joint is a revolute joint and the other joint is a prismatic joint, then the ratio will have units of length or units of 1/length.
| void b2GearJoint::Dump | ( | ) | [virtual] |
Dump joint to dmLog.
Reimplemented from b2Joint.
| b2Vec2 b2GearJoint::GetAnchorA | ( | ) | const [virtual] |
Get the anchor point on bodyA in world coordinates.
Implements b2Joint.
| b2Vec2 b2GearJoint::GetAnchorB | ( | ) | const [virtual] |
Get the anchor point on bodyB in world coordinates.
Implements b2Joint.
| b2Joint* b2GearJoint::GetJoint1 | ( | ) | [inline] |
Get the first joint.
| b2Joint* b2GearJoint::GetJoint2 | ( | ) | [inline] |
Get the second joint.
| b2Vec2 b2GearJoint::GetReactionForce | ( | float32 | inv_dt | ) | const [virtual] |
Get the reaction force on bodyB at the joint anchor in Newtons.
Implements b2Joint.
| float32 b2GearJoint::GetReactionTorque | ( | float32 | inv_dt | ) | const [virtual] |
Get the reaction torque on bodyB in N*m.
Implements b2Joint.
| void b2GearJoint::SetRatio | ( | float32 | ratio | ) |
Set/Get the gear ratio.
1.7.5 
