jist.swans.misc
Class Location

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

All Implemented Interfaces:

java.lang.Cloneable, JistAPI.Timeless

Direct Known Subclasses:

Location.Location2D, Location.Location3D

public abstract class Location
extends java.lang.Object
implements JistAPI.Timeless, java.lang.Cloneable

Location (of a node).

Since:

SWANS1.0

Version:

$Id: Location.java,v 1.12 2004/04/06 16:07:48 barr Exp $

Author:

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

Nested Class Summary

static class	Location.Location2D A planar location implementation.
static class	Location.Location3D A three-dimensional location implementation.

Constructor Summary

Location()

Method Summary

abstract void	add(Location l) Vector addition of locations...
abstract float	distance(Location l) Compute distance between two locations.
abstract float	distanceSqr(Location l) Compute distance squared between two locations.
Location	getClone() Return clone of location object.
abstract float	getHeight() Return height of location.
abstract float	getX() Return X-coordinate of location.
abstract float	getY() Return Y-coordinate of location.
abstract boolean	inside(Location bounds) Determine whether point is inside bounds.
abstract boolean	inside(Location min, Location max) Determine whether points is inside bounds.
static Location	parse(java.lang.String s) Parse string into 2d or 3d Location object.
abstract Location	step(Location l, int steps) Divide (scale) vector from current to second location into a number of equal step (displacement) vectors.

Methods inherited from class java.lang.Object

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

Constructor Detail

Location

public Location()

Method Detail

getX

public abstract float getX()

Return X-coordinate of location.

Returns:

x-coordinate of location

getY

public abstract float getY()

Return Y-coordinate of location.

Returns:

y-coordinate of location

getHeight

public abstract float getHeight()

Return height of location.

Returns:

height of location

distance

public abstract float distance(Location l)

Compute distance between two locations.

Parameters:

l - second location

Returns:

distance between current and second location

distanceSqr

public abstract float distanceSqr(Location l)

Compute distance squared between two locations.

Parameters:

l - second location

Returns:

distance squared between current and second location

step

public abstract Location step(Location l,
                              int steps)

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

Parameters:

l - destination location

steps - number of steps to destination

Returns:

step displacement vector

inside

public abstract boolean inside(Location bounds)

Determine whether point is inside bounds.

Parameters:

bounds - bounds to test again

Returns:

whether point within bounds

inside

public abstract boolean inside(Location min,
                               Location max)

Determine whether points is inside bounds.

Parameters:

min - lower left bound

max - upper right bound

Returns:

whether point within bounds

add

public abstract void add(Location l)

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

Parameters:

l - second location / displacement

getClone

public Location getClone()

Return clone of location object.

Returns:

clone of location object

parse

public static Location parse(java.lang.String s)

Parse string into 2d or 3d Location object.

Parameters:

s - string to be parsed: format = x,y[,h]

Returns:

string parsed into Location object