JSci.physics

Class RigidBody2D

java.lang.Object

JSci.physics.Particle

JSci.physics.ClassicalParticle2D

JSci.physics.RigidBody2D

All Implemented Interfaces:

java.io.Serializable

public class RigidBody2D
extends ClassicalParticle2D

The RigidBody2D class provides an object for encapsulating rigid bodies that live in 2D.

Version:

1.0

Author:

Mark Hale

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected double	ang Angle (orientation).
protected double	angMass Moment of inertia.
protected double	angVel Angular velocity.

Fields inherited from class JSci.physics.ClassicalParticle2D

mass, vx, vy, x, y

Constructor Summary

Constructors

Constructor and Description
RigidBody2D() Constructs a rigid body.

Method Summary

Methods

Modifier and Type	Method and Description
RigidBody2D	angularAccelerate(double a, double dt)
RigidBody2D	angularCollide(RigidBody2D p, double e) Collides this particle with another.
ClassicalParticle2D	applyForce(Force2D F, double dt)
RigidBody2D	applyTorque(double T, double dt)
RigidBody2D	collide(RigidBody2D p, double e) Collides this particle with another.
double	energy() Returns the kinetic and rotational energy.
double	getAngle() Returns the angle (orientation) of this body.
double	getAngularMomentum()
double	getAngularVelocity()
double	getMomentOfInertia()
ClassicalParticle2D	move(double dt) Evolves the particle forward according to its kinematics.
RigidBody2D	rotate(double dt)
void	setAngle(double angle) Sets the angle (orientation) of this body.
void	setAngularMomentum(double angleMom)
void	setAngularVelocity(double angleVel)
void	setMomentOfInertia(double MoI)

Methods inherited from class JSci.physics.ClassicalParticle2D

accelerate, applyForce, collide, getMass, getXMomentum, getXPosition, getXVelocity, getYMomentum, getYPosition, getYVelocity, gravitate, setMass, setMomentum, setPosition, setVelocity, setXPosition, setYPosition, speed, translate

Methods inherited from class java.lang.Object

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

Field Detail

angMass

protected double angMass

Moment of inertia.

ang

protected double ang

Angle (orientation).

angVel

protected double angVel

Angular velocity.

Constructor Detail

RigidBody2D

public RigidBody2D()

Constructs a rigid body.

Method Detail

setMomentOfInertia

public void setMomentOfInertia(double MoI)

getMomentOfInertia

public double getMomentOfInertia()

setAngle

public void setAngle(double angle)

Sets the angle (orientation) of this body.

Parameters:

angle - an angle in radians

getAngle

public double getAngle()

Returns the angle (orientation) of this body.

Returns:

an angle in radians

setAngularVelocity

public void setAngularVelocity(double angleVel)

getAngularVelocity

public double getAngularVelocity()

setAngularMomentum

public void setAngularMomentum(double angleMom)

getAngularMomentum

public double getAngularMomentum()

energy

public double energy()

Returns the kinetic and rotational energy.

Overrides:

energy in class ClassicalParticle2D

move

public ClassicalParticle2D move(double dt)

Evolves the particle forward according to its kinematics.

Overrides:

move in class ClassicalParticle2D

rotate

public RigidBody2D rotate(double dt)

angularAccelerate

public RigidBody2D angularAccelerate(double a,
                            double dt)

applyTorque

public RigidBody2D applyTorque(double T,
                      double dt)

applyForce

public ClassicalParticle2D applyForce(Force2D F,
                             double dt)

Overrides:

applyForce in class ClassicalParticle2D

collide

public RigidBody2D collide(RigidBody2D p,
                  double e)

Collides this particle with another.

Parameters:

e - coefficient of restitution

angularCollide

public RigidBody2D angularCollide(RigidBody2D p,
                         double e)

Collides this particle with another.

Parameters:

e - coefficient of restitution