All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class tw.edu.ncnu.im.cnclab.Tools.MathIntVector

java.lang.Object
   |
   +----tw.edu.ncnu.im.cnclab.Tools.MathIntVector

public class MathIntVector
extends Object
implements Cloneable

The MathIntVector class provides methods for geometric problem to deal with integer coordinates. Usually be used to draw lines at java.awt.Canvas It is useful while:

Invert the direction of the vector.
Getting the perpendicular of specified vectors/lines.
Modified the length of specified vector.

Version:: 0.4 Jul 8, 1999
Author:: Ding-Yi Chen

x
y

MathIntVector(int, int): Constructor of the MathIntVector.

clone(): Returns a clone of this MathIntVector.
getLength(): Get the length of this vector.
negative(): Invert the direction of this vector.
perpendicular(): Rotatae this vertor 90 degree conterclockwise.
setLength(double): Set the length of this vector.

 public int x

 public int y

MathIntVector

 public MathIntVector(int x,
                      int y)

Constructor of the MathIntVector.

Parameters:: x - The coordinate x.; y - The coordinate y.

clone

 public Object clone()

Returns a clone of this MathIntVector.

Returns:: a dclone of this MathIntVector.
Overrides:: clone in class Object

negative

 public void negative()

Invert the direction of this vector.

perpendicular

 public void perpendicular()

Rotatae this vertor 90 degree conterclockwise.

getLength

 public double getLength()

Get the length of this vector.

Returns:: The length of this vector.

setLength

 public void setLength(double newLength)

Set the length of this vector.

Parameters:: newLength - The new length of this vector.

All Packages  Class Hierarchy  This Package  Previous  Next  Index