com.tinyline.tiny2d
Class TinyRect

java.lang.Object
  com.tinyline.tiny2d.TinyRect

public final class TinyRect

extends java.lang.Object

The TinyRect class specifies an area in a coordinate space that is enclosed by the TinyRect object's top-left point (xmin, ymin ) and down-right point (xmax, ymax ) in the coordinate space.

Version:

1.7

Author:

Andrew Girow

Field Summary

int	xmax the down-right corner X coordinate
int	xmin the top-left corner X coordinate
int	ymax the down-right corner Y coordinate
int	ymin the top-left corner Y coordinate

Constructor Summary

TinyRect()
Constructs a new TinyRect empty rectangle.

TinyRect(int x0, int y0, int x1, int y1)
Constructs a new TinyRect whose top-left corner is specified as (x0, y0) and whose down-right corner is specified as (x1, y1).

TinyRect(TinyRect rect)
Constructs a new TinyRect, initialized from the specificed TinyRect.

Method Summary

void	add(TinyPoint point) Adds a point to this TinyRect.
boolean	contains(TinyPoint point) Checks whether or not this TinyRect contains the specified Point.
void	copy(TinyRect src) Copyies TinyRect src to this TinyRect .
TinyRect	grow(int dx, int dy) This TinyRect grows from the center in each direction.
TinyRect	intersection(TinyRect r) Computes the intersection of this TinyRect with the specified TinyRect.
boolean	intersects(TinyRect rect) Determines whether or not this TinyRect and the specified TinyRect intersect.
boolean	isEmpty() Determines whether or not this TinyRect is empty.
void	setEmpty() Sets this TinyRect empty.
void	union(TinyRect rect) Computes the union of this TinyRect with the specified TinyRect.

Methods inherited from class java.lang.Object

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

Field Detail

xmin

public int xmin

the top-left corner X coordinate

ymin

public int ymin

the top-left corner Y coordinate

xmax

public int xmax

the down-right corner X coordinate

ymax

public int ymax

the down-right corner Y coordinate

Constructor Detail

TinyRect

public TinyRect()

Constructs a new TinyRect empty rectangle.

TinyRect

public TinyRect(TinyRect rect)

Constructs a new TinyRect, initialized from the specificed TinyRect.

Parameters:

rect - the TinyRect from which to copy initial values.

TinyRect

public TinyRect(int x0,
                int y0,
                int x1,
                int y1)

Constructs a new TinyRect whose top-left corner is specified as (x0, y0) and whose down-right corner is specified as (x1, y1).

Method Detail

copy

public void copy(TinyRect src)

Copyies TinyRect src to this TinyRect .

[this] = [src]

Parameters:

src - the TinyRect object.

grow

public TinyRect grow(int dx,
                     int dy)

This TinyRect grows from the center in each direction. Returs a new TinyRect whose top-left corner is specified as ((xmin - dx, ymin - dy) and whose down-right corner is specified as (xmax + dx, ymax + dy).

Parameters:

dx - and dy are the specified coordinates deltas.

Returns:

the new TinyRect.

setEmpty

public void setEmpty()

Sets this TinyRect empty.

union

public void union(TinyRect rect)

Computes the union of this TinyRect with the specified TinyRect. Returns a new TinyRect that represents the union of the two rectangles

Parameters:

rect - the specified TinyRect

Returns:

the smallest TinyRect containing both the specified TinyRect and this TinyRect.

intersection

public TinyRect intersection(TinyRect r)

Computes the intersection of this TinyRect with the specified TinyRect. Returns a new rectangle that represents the intersection of the two rectangles.

Parameters:

r - the specified TinyRect.

Returns:

the largest TinyRect contained in both the specified TinyRect and in this TinyRect.

add

public void add(TinyPoint point)

Adds a point to this TinyRect. The resulting TinyRect is the smallest TinyRect that contains both the original TinyRect and the specified point.

Parameters:

point - the new point

isEmpty

public boolean isEmpty()

Determines whether or not this TinyRect is empty.

Returns:

true if this TinyRect is empty; false otherwise.

contains

public boolean contains(TinyPoint point)

Checks whether or not this TinyRect contains the specified Point.

Parameters:

point - the Point to test

Returns:

true if the Point (x, y) is inside this TinyRect; false otherwise.

intersects

public boolean intersects(TinyRect rect)

Determines whether or not this TinyRect and the specified TinyRect intersect.

Parameters:

rect - the specified TinyRect

Returns:

true if the specified TinyRect and this TinyRect insersect; false otherwise.