fisica

Class FConstantVolumeJoint

java.lang.Object

fisica.FDrawable

fisica.FJoint

fisica.FConstantVolumeJoint

public class FConstantVolumeJoint
extends FJoint

Represents constant volume joint that tries to keep the volume enclosed by a group of bodies constant. This joint is similar to connecting multiple springs between the bodies in order to maintain the volume inside their position constant. This is the joint used to create the FBlob body.

Field Summary

Fields

Modifier and Type	Field and Description
protected ArrayList	m_bodies
protected float	m_damping
protected float	m_frequency

Fields inherited from class fisica.FJoint

m_collideConnected, m_joint, 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
FConstantVolumeJoint() Constructs an constant volume joint.

Method Summary

Modifier and Type	Method and Description
void	addBody(FBody b) Adds a body to the joint.
void	draw(def.processing.core.PGraphics applet) This method is called when calling world.draw().
void	drawDebug(def.processing.core.PGraphics applet) This method is called when calling world.drawDebug().
ArrayList	getBodies() Return the group of bodies that are connected by this joint.
def.processing.core.PVector	getCentroid()
protected org.jbox2d.dynamics.joints.JointDef	getJointDef(FWorld world)
void	setDamping(float damping) Sets the damping of the springs used to maintain the volume defined by the vertices constant.
void	setFrequency(float frequency) Sets the frequency of the springs used to maintain the volume defined by the vertices constant.

Methods inherited from class fisica.FJoint

addToWorld, getBody1, getBody2, getBox2dJoint, getReactionForceX, getReactionForceY, getReactionTorque, postDraw, postDrawDebug, preDraw, preDrawDebug, processJoint, removeFromWorld, setCollideConnected

Methods inherited from class fisica.FDrawable

appletFill, appletFillStroke, appletStroke, attachImage, dettachImage, 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_bodies

protected ArrayList m_bodies

m_damping

protected float m_damping

m_frequency

protected float m_frequency

Constructor Detail

FConstantVolumeJoint

public FConstantVolumeJoint()

Constructs an constant volume joint. It creates an empty joint, before adding the joint to the world use addBody to add bodies to the joint and to define the initial and target volume of the joint.

Method Detail

getJointDef

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

Overrides:

getJointDef in class FJoint

addBody

public void addBody(FBody b)

Adds a body to the joint. This method must be called before adding the joint to the world.

Parameters:

b - body to be added

getBodies

public ArrayList getBodies()

Return the group of bodies that are connected by this joint.

Returns:

list of bodies (ArrayList of FBody) connected by the joint

setDamping

public void setDamping(float damping)

Sets the damping of the springs used to maintain the volume defined by the vertices constant. This method must be called before adding the joint to the world.

Parameters:

damping - the damping of the springs of the constant volume joint

setFrequency

public void setFrequency(float frequency)

Sets the frequency of the springs used to maintain the volume defined by the vertices constant. This method must be called before adding the joint to the world.

Parameters:

frequency - the frequency of the springs of the constant volume joint

getCentroid

public def.processing.core.PVector getCentroid()

draw

public void draw(def.processing.core.PGraphics applet)

Description copied from class: FDrawable

This method is called when calling world.draw(). This method may be overriden to allow custom drawing of the object.

Overrides:

draw in class FDrawable

Parameters:

applet - the graphics onto which the object must be drawn.

drawDebug

public void drawDebug(def.processing.core.PGraphics applet)

Description copied from class: FDrawable

This method is called when calling world.drawDebug(). This method may be overriden to allow custom debug drawing of the object.

Overrides:

drawDebug in class FDrawable

Parameters:

applet - the graphics onto which the object must be drawn.