jist.swans.misc
Class Location.Location2D

java.lang.Object
  jist.swans.misc.Location
      jist.swans.misc.Location.Location2D

All Implemented Interfaces:

java.lang.Cloneable, JistAPI.Timeless

Enclosing class:

Location

public static final class Location.Location2D
extends Location

A planar location implementation.

Since:

SWANS1.0

Author:

Rimon Barr <barr+jist@cs.cornell.edu>

Nested Class Summary

Nested classes/interfaces inherited from class jist.swans.misc.Location

Location.Location2D, Location.Location3D

Field Summary

private float	height co-ordinates.
private float	x co-ordinates.
private float	y co-ordinates.

Constructor Summary

Location.Location2D(float x, float y)
Create two-dimensional coordinate at default height.

Location.Location2D(float x, float y, float height)
Create two-dimensional coordinate.

Method Summary

void	add(Location l) Vector addition of locations...
float	distance(Location l) Compute distance between two locations.
float	distanceSqr(Location l) Compute distance squared between two locations.
float	getHeight() Return height of location.
float	getX() Return X-coordinate of location.
float	getY() Return Y-coordinate of location.
boolean	inside(Location bounds) Determine whether point is inside bounds.
boolean	inside(Location min, Location max) Determine whether points is inside bounds.
Location	step(Location l, int steps) Divide (scale) vector from current to second location into a number of equal step (displacement) vectors.
java.lang.String	toString()

Methods inherited from class jist.swans.misc.Location

getClone, parse

Methods inherited from class java.lang.Object

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

Field Detail

x

private float x

co-ordinates.

y

private float y

co-ordinates.

height

private float height

co-ordinates.

Constructor Detail

Location.Location2D

public Location.Location2D(float x,
                           float y)

Create two-dimensional coordinate at default height.

Parameters:

x - x-coordinate

y - y-coordinate

Location.Location2D

public Location.Location2D(float x,
                           float y,
                           float height)

Create two-dimensional coordinate.

Parameters:

x - x-coordinate

y - y-coordinate

height - z-coordinate

Method Detail

distanceSqr

public float distanceSqr(Location l)

Compute distance squared between two locations.

Specified by:

distanceSqr in class Location

Parameters:

l - second location

Returns:

distance squared between current and second location

distance

public float distance(Location l)

Compute distance between two locations.

Specified by:

distance in class Location

Parameters:

l - second location

Returns:

distance between current and second location

step

public Location step(Location l,
                     int steps)

Divide (scale) vector from current to second location into a number of equal step (displacement) vectors.

Specified by:

step in class Location

Parameters:

l - destination location

steps - number of steps to destination

Returns:

step displacement vector

getX

public float getX()

Return X-coordinate of location.

Specified by:

getX in class Location

Returns:

x-coordinate of location

getY

public float getY()

Return Y-coordinate of location.

Specified by:

getY in class Location

Returns:

y-coordinate of location

getHeight

public float getHeight()

Return height of location.

Specified by:

getHeight in class Location

Returns:

height of location

inside

public boolean inside(Location bounds)

Determine whether point is inside bounds.

Specified by:

inside in class Location

Parameters:

bounds - bounds to test again

Returns:

whether point within bounds

inside

public boolean inside(Location min,
                      Location max)

Determine whether points is inside bounds.

Specified by:

inside in class Location

Parameters:

min - lower left bound

max - upper right bound

Returns:

whether point within bounds

add

public void add(Location l)

Vector addition of locations... Be careful! This method mutates the current object.

Specified by:

add in class Location

Parameters:

l - second location / displacement

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object