game.motion
Class ConstantAcceleration

java.lang.Object
  game.motion.Stationary
      game.motion.ConstantVelocity
          game.motion.ConstantAcceleration

All Implemented Interfaces:

Trajectory

public class ConstantAcceleration
extends ConstantVelocity
implements Trajectory

Extends ConstantVelocity by contributing a constant (but not necessarily zero) acceleration.

Author:

Ron Cytron

Constructor Summary

ConstantAcceleration(lab4.Point origin, lab4.Vector v, lab4.Vector a)
A new Trajectory based on the point of origin, a velocity, and an acceleration

ConstantAcceleration(Trajectory old, lab4.Vector v, lab4.Vector a)
Constructs a new Trajectory based on the current location of the supplied one.

Method Summary

lab4.Vector	getCurrentAcceleration() Current acceleration
lab4.Vector	getCurrentVelocity() Current velocity computed as v + at
lab4.Point	getLocation(Time t) Current location computed as origin + vt + 1/2at^2

Methods inherited from class game.motion.Stationary

getCurrentLocation, getT0

Methods inherited from class java.lang.Object

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

Methods inherited from interface game.motion.Trajectory

getCurrentLocation, getT0

Constructor Detail

ConstantAcceleration

public ConstantAcceleration(Trajectory old,
                            lab4.Vector v,
                            lab4.Vector a)

Constructs a new Trajectory based on the current location of the supplied one.

Parameters:

old - Trajectory for computing the current location.

v - Velocity of the new Trajectory

a - Acceleration of the new Trajectory

ConstantAcceleration

public ConstantAcceleration(lab4.Point origin,
                            lab4.Vector v,
                            lab4.Vector a)

A new Trajectory based on the point of origin, a velocity, and an acceleration

Parameters:

origin - Point of origin

v - original velocity

a - constant acceleration

Method Detail

getLocation

public lab4.Point getLocation(Time t)

Current location computed as origin + vt + 1/2at^2

Specified by:

getLocation in interface Trajectory

Overrides:

getLocation in class ConstantVelocity

Parameters:

t - time at which location should be computed, relative to time origin.

Returns:

current location at time t

getCurrentVelocity

public lab4.Vector getCurrentVelocity()

Current velocity computed as v + at

Specified by:

getCurrentVelocity in interface Trajectory

Overrides:

getCurrentVelocity in class ConstantVelocity

Returns:

current velocity

getCurrentAcceleration

public lab4.Vector getCurrentAcceleration()

Current acceleration

Specified by:

getCurrentAcceleration in interface Trajectory

Overrides:

getCurrentAcceleration in class Stationary

Returns:

current acceleration