aim4.util
Class MotionMath

java.lang.Object
  aim4.util.MotionMath

public class MotionMath
extends Object

This class provides utility functions for calculating the motion of the vehicles.

Method Summary

static double	calcDuration(double v1, double v2, double accel) Calculate the time it takes to accelerate (or decelerate) from the initial velocity to the end velocity.
static double	calcDuration(double v1, double v2, double accel, double distance) Calculate the time it takes to accelerate (or decelerate) from the initial velocity to the end velocity.
static double	calcEndVelocity(double v1, double accel, double dist) Calculate the velocity after accelerating for a given distance, starting with a given velocity.

Methods inherited from class java.lang.Object

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

Method Detail

calcEndVelocity

public static double calcEndVelocity(double v1,
                                     double accel,
                                     double dist)

Calculate the velocity after accelerating for a given distance, starting with a given velocity.

Parameters:

v1 - the initial velocity

accel - the (constant) acceleration

dist - the distance traveled

Returns:

the end velocity; Double.NaN if there is no solution

calcDuration

public static double calcDuration(double v1,
                                  double v2,
                                  double accel)

Calculate the time it takes to accelerate (or decelerate) from the initial velocity to the end velocity.

Parameters:

v1 - the initial velocity

v2 - the end velocity

accel - the acceleration

Returns:

the time it takes to accelerate from v1 to v2; Double.NaN if the acceleration is zero.

calcDuration

public static double calcDuration(double v1,
                                  double v2,
                                  double accel,
                                  double distance)

Calculate the time it takes to accelerate (or decelerate) from the initial velocity to the end velocity. If the acceleration is zero, it uses the distance traveled to compute the time.

Parameters:

v1 - the initial velocity

v2 - the end velocity

accel - the acceleration

distance - the distance traveled

Returns:

the time it takes to accelerate from v1 to v2; Double.NaN if both the acceleration and the initial velocity is zero.