fisica
Class FJoint

java.lang.Object
  fisica.FJoint

Direct Known Subclasses:

FConstantVolumeJoint, FDistanceJoint, FGearJoint, FMouseJoint, FPrismaticJoint, FRevoluteJoint

public abstract class FJoint
extends java.lang.Object

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.

Constructor Summary

FJoint()

Method Summary

void	addToWorld(FWorld world)
void	attachImage(processing.core.PImage img) Attach an image to the object.
void	dettachImage() Dettach any image that has been attached to the object.
void	draw(processing.core.PApplet applet)
void	draw(processing.core.PGraphics applet) This method is called when calling world.draw().
FBody	getBody1() Returns the first body attached to this joint.
FBody	getBody2() Returns the second body attached to this joint.
int	getFillColor() Returns the fill color of the object.
float	getImageAlpha() Get the opacity with which to draw the attached image.
float	getReactionForceX(float invDt) Returns the horizontal component of the reaction force on the second body at the joint anchor.
float	getReactionForceY(float invDt) Returns the vertical component of the reaction force on the second body at the joint anchor.
float	getReactionTorque(float invDt) Returns the reaction torque on the second body at the joint anchor.
boolean	isDrawable() Get whether the object must be drawn or not.
void	removeFromWorld()
void	setCollideConnected(boolean value) Sets whether the bodies connected by the joint should collide with each other.
void	setDrawable(boolean drawable) Set whether the object must be drawn or not.
void	setFill(float g) Set the fill color of the object.
void	setFill(float g, float a) Set the fill color of the object.
void	setFill(float r, float g, float b) Set the fill color of the object.
void	setFill(float r, float g, float b, float a) Set the fill color of the object.
void	setFillColor(int col) Set the fill color of the object.
void	setImageAlpha(float alpha) Set the opacity with which to draw the attached image.
void	setNoFill() Set that the object must be drawn without fill.
void	setNoStroke() Set that the object must be drawn without stroke.
void	setStroke(float g) Set the stroke color of the object.
void	setStroke(float g, float a) Set the stroke color of the object.
void	setStroke(float r, float g, float b) Set the stroke color of the object.
void	setStroke(float r, float g, float b, float a) Set the stroke color of the object.
void	setStrokeColor(int col) Set the stroke color of the object.
void	setStrokeWeight(float weight) Set the stroke weight of the object.

Methods inherited from class java.lang.Object

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

Constructor Detail

FJoint

public FJoint()

Method Detail

addToWorld

public void addToWorld(FWorld world)

removeFromWorld

public void removeFromWorld()

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(float invDt)

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(float invDt)

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(float invDt)

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

Returns:

reaction torque

draw

public void draw(processing.core.PGraphics applet)

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

Parameters:

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

draw

public void draw(processing.core.PApplet applet)

attachImage

public void attachImage(processing.core.PImage img)

Attach an image to the object. This method allows to draw an image onto the screen instead of calling the draw(PApplet) method.

Parameters:

img - the PImage to attach to the object.

dettachImage

public void dettachImage()

Dettach any image that has been attached to the object.

See Also:

attachImage(PImage)

getImageAlpha

public float getImageAlpha()

Get the opacity with which to draw the attached image.

Returns:

the opacity, a value from 0.0 to 1.0 with which to draw the attached image

See Also:

attachImage(PImage), setImageAlpha(float)

setImageAlpha

public void setImageAlpha(float alpha)

Set the opacity with which to draw the attached image.

Parameters:

alpha - the opacity, a value from 0.0 to 1.0 with which to draw the attached image

See Also:

attachImage(PImage), getImageAlpha()

setDrawable

public void setDrawable(boolean drawable)

Set whether the object must be drawn or not.

Parameters:

drawable - if true the object will be drawn, else it will not

See Also:

isDrawable()

isDrawable

public boolean isDrawable()

Get whether the object must be drawn or not.

Returns:

drawable if true the object will be drawn, else it will not

See Also:

setDrawable(boolean)

getFillColor

public int getFillColor()

Returns the fill color of the object.

Returns:

a Processing color type. e.g. myBody.setFillColor(color(20,100,30,90));

See Also:

setNoFill(), setFill(float), setFill(float,float), setFill(float,float,float), setFill(float,float,float,float)

setFillColor

public void setFillColor(int col)

Set the fill color of the object. This method must be used in conjunction with Processing's color(). In most cases users will find it more convenient to use the versions of setFill(float), setFill(float,float), setFill(float,float,float) or setFill(float,float,float,float)

Parameters:

col - a Processing color type. e.g. myBody.setFillColor(color(20,100,30,90));

See Also:

setNoFill(), setFill(float), setFill(float,float), setFill(float,float,float), setFill(float,float,float,float)

setNoFill

public void setNoFill()

Set that the object must be drawn without fill.

See Also:

setFill(float), setFill(float,float), setFill(float,float,float), setFill(float,float,float,float)

setFill

public void setFill(float g)

Set the fill color of the object.

Parameters:

g - gray value

See Also:

setFill(float), setFill(float,float), setFill(float,float,float), setFill(float,float,float,float)

setFill

public void setFill(float g,
                    float a)

Set the fill color of the object.

Parameters:

g - gray value

a - alpha (opacity) value

See Also:

setFill(float), setFill(float,float), setFill(float,float,float), setFill(float,float,float,float)

setFill

public void setFill(float r,
                    float g,
                    float b)

Set the fill color of the object.

Parameters:

r - red value

g - green value

b - blue value

See Also:

setFill(float), setFill(float,float), setFill(float,float,float), setFill(float,float,float,float)

setFill

public void setFill(float r,
                    float g,
                    float b,
                    float a)

Set the fill color of the object.

Parameters:

r - red value

g - green value

b - blue value

a - alpha (opacity) value

See Also:

setFill(float), setFill(float,float), setFill(float,float,float), setFill(float,float,float,float)

setStrokeColor

public void setStrokeColor(int col)

Set the stroke color of the object. This method must be used in conjunction with Processing's color(). In most cases users will find it more convenient to use the versions of setStroke(float), setStroke(float,float), setStroke(float,float,float) or setStroke(float,float,float,float)

Parameters:

col - a Processing color type. e.g. myBody.setStrokeColor(color(20,100,30,90));

See Also:

setNoStroke(), setStroke(float), setStroke(float,float), setStroke(float,float,float), setStroke(float,float,float,float)

setNoStroke

public void setNoStroke()

Set that the object must be drawn without stroke.

See Also:

setStroke(float), setStroke(float,float), setStroke(float,float,float), setStroke(float,float,float,float)

setStroke

public void setStroke(float g)

Set the stroke color of the object.

Parameters:

g - gray value

See Also:

setStroke(float), setStroke(float,float), setStroke(float,float,float), setStroke(float,float,float,float)

setStroke

public void setStroke(float g,
                      float a)

Set the stroke color of the object.

Parameters:

g - gray value

a - alpha (opacity) value

See Also:

setStroke(float), setStroke(float,float), setStroke(float,float,float), setStroke(float,float,float,float)

setStroke

public void setStroke(float r,
                      float g,
                      float b)

Set the stroke color of the object.

Parameters:

r - red value

g - green value

b - blue value

See Also:

setStroke(float), setStroke(float,float), setStroke(float,float,float), setStroke(float,float,float,float)

setStroke

public void setStroke(float r,
                      float g,
                      float b,
                      float a)

Set the stroke color of the object.

Parameters:

r - red value

g - green value

b - blue value

a - alpha (opacity) value

See Also:

setStroke(float), setStroke(float,float), setStroke(float,float,float), setStroke(float,float,float,float)

setStrokeWeight

public void setStrokeWeight(float weight)

Set the stroke weight of the object.

Parameters:

weight - weight value in pixels

See Also:

setStroke(float), setStroke(float,float), setStroke(float,float,float), setStroke(float,float,float,float)