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Class ncsa.horizon.awt.Line

java.lang.Object
  |
  +--java.awt.geom.RectangularShape
        |
        +--java.awt.geom.Rectangle2D
              |
              +--java.awt.Rectangle
                    |
                    +--ncsa.horizon.awt.Line

public class Line

extends java.awt.Rectangle

Line class is a geometry entity represent a line segment vector with start point and x, y vector components.

Now, it just extends java.awt.Rectangle with Rectangle's x, y as start point and width, height as x, y vector components.

Since it extends Rectangle, outside objects have access to (x, y), which is the start point of the Line, and width, height which are the x, y components of the line.

See Also:

Serialized Form

Inner classes inherited from class java.awt.geom.Rectangle2D

java.awt.geom.Rectangle2D.Double, java.awt.geom.Rectangle2D.Float

Fields inherited from class java.awt.Rectangle

height, width, x, y

Fields inherited from class java.awt.geom.Rectangle2D

OUT_BOTTOM, OUT_LEFT, OUT_RIGHT, OUT_TOP

Constructor Summary

Line()
Constructs a new Line whose start point is at (0, 0)

Line(int delta_x, int delta_y)
Constructs a new Line whose start point is at (0, 0)

Line(int x, int y, int delta_x, int delta_y)
Constructs a new Line whose start point is at (x, y), vector componet delta_x, and delta_y

Line(java.awt.Point p)
Constructs a new line whose start is the specified point argument and whose x, y components are 0, 0.

Line(java.awt.Point p, int delta_x, int delta_y)
Constructs a new line whose start is the specified point argument and whose x, y components are delta_x, delta_y

Line(java.awt.Point p1, java.awt.Point p2)
create a line that spans from one point to another

Method Summary

java.awt.Point	endPoint() Return a copy of the end point.
int	length() Return line length.
java.awt.Point	startPoint() return a copy of start point.

Methods inherited from class java.awt.Rectangle

add, add, add, contains, contains, contains, contains, createIntersection, createUnion, equals, getBounds, getHeight, getLocation, getSize, getWidth, getX, getY, grow, hashCode, inside, intersection, intersects, isEmpty, move, outcode, reshape, resize, setBounds, setBounds, setLocation, setLocation, setRect, setSize, setSize, toString, translate, union

Methods inherited from class java.awt.geom.Rectangle2D

add, add, add, contains, contains, createIntersection, createUnion, equals, getBounds2D, getPathIterator, getPathIterator, intersect, intersectsLine, intersectsLine, intersects, outcode, outcode, setFrame, setRect, setRect, union

Methods inherited from class java.awt.geom.RectangularShape

clone, contains, contains, contains, contains, getBounds2D, getBounds, getCenterX, getCenterY, getFrame, getHeight, getMaxX, getMaxY, getMinX, getMinY, getPathIterator, getPathIterator, getWidth, getX, getY, intersects, intersects, isEmpty, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal, setFrame, setFrame, setFrame

Methods inherited from class java.lang.Object

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

Constructor Detail

Line

public Line()

Constructs a new Line whose start point is at (0, 0), vector componet 0, and 0.

Line

public Line(int delta_x,
            int delta_y)

Constructs a new Line whose start point is at (0, 0), vector componet delta_x, and delta_y

Parameters:

delta_x - the Line's x component

delta_y - the Line's y component

Line

public Line(int x,
            int y,
            int delta_x,
            int delta_y)

Constructs a new Line whose start point is at (x, y), vector componet delta_x, and delta_y

Parameters:

x - the x coordinate of start point

y - the y coordinate of start point

delta_x - the Line's x component

delta_y - the Line's y component

Line

public Line(java.awt.Point p)

Constructs a new line whose start is the specified point argument and whose x, y components are 0, 0.

Parameters:

p - start point

Line

public Line(java.awt.Point p,
            int delta_x,
            int delta_y)

Constructs a new line whose start is the specified point argument and whose x, y components are delta_x, delta_y

Parameters:

p - start point

delta_x - the Line's x component

delta_y - the Line's y component

Line

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

create a line that spans from one point to another

Method Detail

endPoint

public java.awt.Point endPoint()

Return a copy of the end point.

length

public int length()

Return line length.

Returns:

length of this Line.

startPoint

public java.awt.Point startPoint()

return a copy of start point.