com.nomagic.awt

Class Line

java.lang.Object

com.nomagic.awt.Line

@OpenApiAll
public class Line
extends java.lang.Object

The Line represents a line segment in (x, y) coordinate space.

Field Summary

Fields

Modifier and Type	Field and Description
java.awt.Point	A The first point of the line.
java.awt.Point	B The second point of the line.

Constructor Summary

Constructors

Constructor and Description
Line() Constructs a new line whose first point is at (0,0) in the coordinate space, and whose second point is at (0, 0) in the coordinate space.
Line(int x1, int y1, int x2, int y2) Constructs a new line whose first point is specified as (x, y) and whose second point is specified as (x, y).
Line(Line l) Constructs a new line, initialized to match the values of the specificed line.
Line(java.awt.Point p1, java.awt.Point p2) Constructs a new line whose first point is specified as p1 and whose second point is specified as p2.

Method Summary

Modifier and Type	Method and Description
boolean	belongs(java.awt.Point p) Checks whether specified point belongs to this line.
boolean	equals(java.lang.Object obj) Checks whether two lines are equal.
java.awt.Rectangle	getBounds() Gets the bounding rectangle of this line.
int	hashCode() Returns hash code for this object.
java.awt.Point	intersection(Line l) Computes the intersection of this line with the specified line.
java.awt.Point	intersection(java.awt.Point p) Computes the intersection of this line with the line perpendicular to this line.
boolean	intersects(Line l) Determines whether this line and the specified line intersect.
boolean	isVertical()
java.lang.String	toString() Returns a string representation of this line and its values.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

A

public java.awt.Point A

The first point of the line.

B

public java.awt.Point B

The second point of the line.

Constructor Detail

Line

public Line()

Constructs a new line whose first point is at (0,0) in the coordinate space, and whose second point is at (0, 0) in the coordinate space.

Line

public Line(Line l)

Constructs a new line, initialized to match the values of the specificed line.

Parameters:

l - a line from which to copy initial values.

Line

public Line(java.awt.Point p1,
            java.awt.Point p2)

Constructs a new line whose first point is specified as p1 and whose second point is specified as p2.

Parameters:

p1 - the first point.

p2 - the second point.

Line

public Line(int x1,
            int y1,
            int x2,
            int y2)

Constructs a new line whose first point is specified as (x, y) and whose second point is specified as (x, y).

Parameters:

x1 - the first point x coordinate.

y1 - the first point y coordinate.

x2 - the second point x coordinate.

y2 - the second point y coordinate.

Method Detail

intersects

public boolean intersects(Line l)

Determines whether this line and the specified line intersect.

Parameters:

l - a line.

Returns:

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

intersection

public java.awt.Point intersection(Line l)

Computes the intersection of this line with the specified line. Returns a new point that represents the intersection of the two lines.

Parameters:

l - a line.

Returns:

the lines intersection point

intersection

public java.awt.Point intersection(java.awt.Point p)

Computes the intersection of this line with the line perpendicular to this line. Perpendicular line go throught specified point. Returns a new point that represents the intersection of the two lines.

Parameters:

p - a point.

Returns:

the lines intersection point

belongs

public boolean belongs(java.awt.Point p)

Checks whether specified point belongs to this line.

The result is true if and only if the argument is not null and belongs to this line.

Parameters:

p - a point.

Returns:

true if specified point belongs to this line; false otherwise.

equals

public boolean equals(java.lang.Object obj)

Checks whether two lines are equal.

The result is true if and only if the argument is not null and is a Line object that has the same first point and second point as this line.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the object to compare with.

Returns:

true if the objects are equal; false otherwise.

toString

@OpenApi
public java.lang.String toString()

Returns a string representation of this line and its values.

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this line.

getBounds

public java.awt.Rectangle getBounds()

Gets the bounding rectangle of this line.

This method is included for completeness, to parallel the getBounds method of Component.

Returns:

a new rectangle, equal to the bounding rectangle for this line.

See Also:

Component.getBounds()

hashCode

public int hashCode()

Returns hash code for this object. Just calls super.hashCode().

Overrides:

hashCode in class java.lang.Object

isVertical

public boolean isVertical()

Returns:

true if line is more vertical than horizontal.