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Box2D
2.2.1
Box2D API Reference for Kobold2D developers
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#include <b2MouseJoint.h>
Inheritance diagram for b2MouseJoint: Collaboration diagram for b2MouseJoint:Public Member Functions | |
| b2Vec2 | GetAnchorA () const |
| Implements b2Joint. | |
| b2Vec2 | GetAnchorB () const |
| Implements b2Joint. | |
| b2Vec2 | GetReactionForce (float32 inv_dt) const |
| Implements b2Joint. | |
| float32 | GetReactionTorque (float32 inv_dt) const |
| Implements b2Joint. | |
| void | SetTarget (const b2Vec2 &target) |
| Use this to update the target point. | |
| const b2Vec2 & | GetTarget () const |
| void | SetMaxForce (float32 force) |
| Set/get the maximum force in Newtons. | |
| float32 | GetMaxForce () const |
| void | SetFrequency (float32 hz) |
| Set/get the frequency in Hertz. | |
| float32 | GetFrequency () const |
| void | SetDampingRatio (float32 ratio) |
| Set/get the damping ratio (dimensionless). | |
| float32 | GetDampingRatio () const |
| void | Dump () |
| The mouse joint does not support dumping. | |
Protected Member Functions | |
| b2MouseJoint (const b2MouseJointDef *def) | |
| void | InitVelocityConstraints (const b2SolverData &data) |
| void | SolveVelocityConstraints (const b2SolverData &data) |
| bool | SolvePositionConstraints (const b2SolverData &data) |
Protected Attributes | |
| b2Vec2 | m_localAnchorB |
| b2Vec2 | m_targetA |
| float32 | m_frequencyHz |
| float32 | m_dampingRatio |
| float32 | m_beta |
| b2Vec2 | m_impulse |
| float32 | m_maxForce |
| float32 | m_gamma |
| int32 | m_indexA |
| int32 | m_indexB |
| b2Vec2 | m_rB |
| b2Vec2 | m_localCenterB |
| float32 | m_invMassB |
| float32 | m_invIB |
| b2Mat22 | m_mass |
| b2Vec2 | m_C |
Friends | |
| class | b2Joint |
A mouse joint is used to make a point on a body track a specified world point. This a soft constraint with a maximum force. This allows the constraint to stretch and without applying huge forces. NOTE: this joint is not documented in the manual because it was developed to be used in the testbed. If you want to learn how to use the mouse joint, look at the testbed.
| void b2MouseJoint::Dump | ( | ) | [inline, virtual] |
The mouse joint does not support dumping.
Reimplemented from b2Joint.
| b2Vec2 b2MouseJoint::GetReactionForce | ( | float32 | inv_dt | ) | const [virtual] |
| float32 b2MouseJoint::GetReactionTorque | ( | float32 | inv_dt | ) | const [virtual] |
| void b2MouseJoint::SetDampingRatio | ( | float32 | ratio | ) |
Set/get the damping ratio (dimensionless).
| void b2MouseJoint::SetFrequency | ( | float32 | hz | ) |
Set/get the frequency in Hertz.
| void b2MouseJoint::SetMaxForce | ( | float32 | force | ) |
Set/get the maximum force in Newtons.
| void b2MouseJoint::SetTarget | ( | const b2Vec2 & | target | ) |
Use this to update the target point.
1.7.5 
