fisica

Class FJoint

java.lang.Object

fisica.FDrawable

fisica.FJoint

Direct Known Subclasses:

FConstantVolumeJoint, FDistanceJoint, FGearJoint, FMouseJoint, FPrismaticJoint, FRevoluteJoint

public abstract class FJoint
extends FDrawable

Represents a joint between two or more bodies. A joint establishes some kind of relation between two or more bodies. Depending on the specific joint the relation might be a distance relation, a rotation relation or even a volume conservation relation. This class cannot be be instantiated, instead use one of the derived classes.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	m_collideConnected
protected org.jbox2d.dynamics.joints.Joint	m_joint
protected FWorld	m_world

Fields inherited from class fisica.FDrawable

m_drawable, m_fill, m_fillColor, m_image, m_imageAlpha, m_mask, m_stroke, m_strokeColor, m_strokeWeight

Constructor Summary

Constructors

Constructor and Description
FJoint()

Method Summary

Modifier and Type	Method and Description
void	addToWorld(FWorld world)
FBody	getBody1() Returns the first body attached to this joint.
FBody	getBody2() Returns the second body attached to this joint.
org.jbox2d.dynamics.joints.Joint	getBox2dJoint() WARNING: This method is internal only and may change someday.
protected org.jbox2d.dynamics.joints.JointDef	getJointDef(FWorld world)
float	getReactionForceX() Returns the horizontal component of the reaction force on the second body at the joint anchor.
float	getReactionForceY() Returns the vertical component of the reaction force on the second body at the joint anchor.
float	getReactionTorque() Returns the reaction torque on the second body at the joint anchor.
protected void	postDraw(def.processing.core.PGraphics applet)
protected void	postDrawDebug(def.processing.core.PGraphics applet)
protected void	preDraw(def.processing.core.PGraphics applet)
protected void	preDrawDebug(def.processing.core.PGraphics applet)
protected void	processJoint(org.jbox2d.dynamics.World world, org.jbox2d.dynamics.joints.JointDef jd)
void	removeFromWorld()
void	setCollideConnected(boolean value) Sets whether the bodies connected by the joint should collide with each other.

Methods inherited from class fisica.FDrawable

appletFill, appletFillStroke, appletStroke, attachImage, dettachImage, draw, drawDebug, drawImage, getFillColor, getImageAlpha, isDrawable, setDrawable, setFill, setFill, setFill, setFill, setFillColor, setImageAlpha, setNoFill, setNoStroke, setStroke, setStroke, setStroke, setStroke, setStrokeColor, setStrokeWeight, updateStyle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

m_joint

protected org.jbox2d.dynamics.joints.Joint m_joint

m_world

protected FWorld m_world

m_collideConnected

protected boolean m_collideConnected

Constructor Detail

FJoint

public FJoint()

Method Detail

getBox2dJoint

public org.jbox2d.dynamics.joints.Joint getBox2dJoint()

WARNING: This method is internal only and may change someday. If you are using this method please contact the developer since there should be a better way or we may add something to the library.

Returns:

the internal JBox2D joint

processJoint

protected void processJoint(org.jbox2d.dynamics.World world,
                            org.jbox2d.dynamics.joints.JointDef jd)

addToWorld

public void addToWorld(FWorld world)

removeFromWorld

public void removeFromWorld()

getJointDef

protected org.jbox2d.dynamics.joints.JointDef getJointDef(FWorld world)

preDraw

protected void preDraw(def.processing.core.PGraphics applet)

postDraw

protected void postDraw(def.processing.core.PGraphics applet)

preDrawDebug

protected void preDrawDebug(def.processing.core.PGraphics applet)

postDrawDebug

protected void postDrawDebug(def.processing.core.PGraphics applet)

getBody1

public FBody getBody1()

Returns the first body attached to this joint.

Returns:

first of the bodies connected by this joint

getBody2

public FBody getBody2()

Returns the second body attached to this joint.

Returns:

second of the bodies connected by this joint

setCollideConnected

public void setCollideConnected(boolean value)

Sets whether the bodies connected by the joint should collide with each other.

Parameters:

value - if true the bodies connected by this joint will be allowed to collide with each other

getReactionForceX

public float getReactionForceX()

Returns the horizontal component of the reaction force on the second body at the joint anchor.

Returns:

horizontal component of the reaction force

getReactionForceY

public float getReactionForceY()

Returns the vertical component of the reaction force on the second body at the joint anchor.

Returns:

vertical component of the reaction force

getReactionTorque

public float getReactionTorque()

Returns the reaction torque on the second body at the joint anchor.

Returns:

reaction torque