C# Class FarseerPhysics.Dynamics.Joints.PrismaticJoint

A prismatic joint. This joint provides one degree of freedom: translation along an axis fixed in bodyA. Relative rotation is prevented. You can use a joint limit to restrict the range of motion and a joint motor to drive the motion or to model joint friction.

Inheritance: Joint

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Méthodes publiques

Свойство	Type	Description
localAnchorA	Vector2
localAnchorB	Vector2
motorImpulse	float
referenceAngle	float

Méthodes publiques

Méthode	Description
PrismaticJoint ( Body bodyA, Body bodyB, Vector2 anchorA, Vector2 anchorB, Vector2 axis, bool useWorldCoordinates = false ) : System	This requires defining a line of motion using an axis and an anchor point. The definition uses local anchor points and a local axis so that the initial configuration can violate the constraint slightly. The joint translation is zero when the local anchor points coincide in world space. Using local anchors and a local axis helps when saving and loading a game.
PrismaticJoint ( Body bodyA, Body bodyB, Vector2 anchor, Vector2 axis, bool useWorldCoordinates = false ) : System
getMotorForce ( float invDt ) : float	Gets the motor force.
getReactionForce ( float invDt ) : Vector2
getReactionTorque ( float invDt ) : float
initialize ( Vector2 localAnchorA, Vector2 localAnchorB, Vector2 axis, bool useWorldCoordinates ) : void
setLimits ( float lower, float upper ) : void	Set the joint limits, usually in meters.

Private Methods

Méthode	Description
PrismaticJoint ( ) : System
initVelocityConstraints ( SolverData &data ) : void
solvePositionConstraints ( SolverData &data ) : bool
solveVelocityConstraints ( SolverData &data ) : void

Method Details

PrismaticJoint() public méthode

This requires defining a line of motion using an axis and an anchor point. The definition uses local anchor points and a local axis so that the initial configuration can violate the constraint slightly. The joint translation is zero when the local anchor points coincide in world space. Using local anchors and a local axis helps when saving and loading a game.

public PrismaticJoint ( Body bodyA, Body bodyB, Vector2 anchorA, Vector2 anchorB, Vector2 axis, bool useWorldCoordinates = false ) : System
bodyA	Body	The first body.
bodyB	Body	The second body.
anchorA	Vector2	The first body anchor.
anchorB	Vector2	The second body anchor.
axis	Vector2	The axis.
useWorldCoordinates	bool	Set to true if you are using world coordinates as anchors.
Résultat	System

PrismaticJoint() public méthode

public PrismaticJoint ( Body bodyA, Body bodyB, Vector2 anchor, Vector2 axis, bool useWorldCoordinates = false ) : System
bodyA	Body
bodyB	Body
anchor	Vector2
axis	Vector2
useWorldCoordinates	bool
Résultat	System

getMotorForce() public méthode

Gets the motor force.

public getMotorForce ( float invDt ) : float
invDt	float	The inverse delta time
Résultat	float

getReactionForce() public méthode

public getReactionForce ( float invDt ) : Vector2
invDt	float
Résultat	Vector2

getReactionTorque() public méthode

public getReactionTorque ( float invDt ) : float
invDt	float
Résultat	float

initialize() public méthode

public initialize ( Vector2 localAnchorA, Vector2 localAnchorB, Vector2 axis, bool useWorldCoordinates ) : void
localAnchorA	Vector2
localAnchorB	Vector2
axis	Vector2
useWorldCoordinates	bool
Résultat	void

setLimits() public méthode

Set the joint limits, usually in meters.

public setLimits ( float lower, float upper ) : void
lower	float	The lower limit
upper	float	The upper limit
Résultat	void

Property Details

localAnchorA public_oe property

The local anchor point on BodyA

public Vector2 localAnchorA
Résultat	Vector2

localAnchorB public_oe property

The local anchor point on BodyB

public Vector2 localAnchorB
Résultat	Vector2

motorImpulse public_oe property

Get the current motor impulse, usually in N.

public float motorImpulse
Résultat	float

referenceAngle public_oe property

The reference angle.

public float referenceAngle
Résultat	float