org.globalse.arena.frag.util
Class MathVector

java.lang.Object
  |
  +--org.globalse.arena.frag.util.MathVector

public class MathVector

extends java.lang.Object

implements java.lang.Cloneable, java.io.Serializable

class for a 3-D vector and some calc on it.

See Also:

Serialized Form

Field Summary
double	x
double	y
double	z

 

Constructor Summary

MathVector()           Default Constructor.

MathVector(double _x, double _y, double _z)           Constructor for setting the coordinates with the values of the parameters

 

Method Summary
MathVector	add(MathVector other)           Adds the coordinates of the other MathVector to the coordinates of the current vector.
java.lang.Object	clone()           Returns a copy of the instance of the object.
boolean	equals(java.lang.Object obj)           Calculates wether the parameter object is equal with the current vector.
double	length()           Returns the legth of the vector.
MathVector	normalize()           Returns normalized MathVector.
MathVector	scale(double value)           Multiplies each coordinate of the vector with the parameter value.
MathVector	sub(MathVector other)           Substracts the coordinates of the oteher MathVector from the current vector.
java.lang.String	toString()           Return the coordinates of the vector as a string.

 

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

 

Field Detail

x

public double x

y

public double y

z

public double z

MathVector

public MathVector()

Default Constructor. Initializes the variables.

MathVector

public MathVector(double _x,
                  double _y,
                  double _z)

Constructor for setting the coordinates with the values of the parameters

Parameters:

_x - the x coordinate

_y - the y coordinate

_z - the z coordinate

clone

public java.lang.Object clone()

Returns a copy of the instance of the object.

Returns:

copy of the instance

Overrides:

clone in class java.lang.Object

length

public double length()

Returns the legth of the vector.

Returns:

the length of the vector

add

public MathVector add(MathVector other)

Adds the coordinates of the other MathVector to the coordinates of the current vector.

Parameters:

other - the second vector

Returns:

the result of the two vectors

sub

public MathVector sub(MathVector other)

Substracts the coordinates of the oteher MathVector from the current vector.

Parameters:

other - the second vector

Returns:

a substraction of the two vectors.

scale

public MathVector scale(double value)

Multiplies each coordinate of the vector with the parameter value.

Parameters:

value - the value for the multiplication

Returns:

MathVector a new MathVector object after the calculation

normalize

public MathVector normalize()

Returns normalized MathVector. If the legnth of the current vector is negativ, a vector with zero coordinates is returned.

Returns:

the normalezed vector

equals

public boolean equals(java.lang.Object obj)

Calculates wether the parameter object is equal with the current vector.

Parameters:

obj - the second object

Returns:

a boolean value of the calculation; equals or not

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Return the coordinates of the vector as a string. return a string with the coordinates of the vector

Returns:

String string with the coordinates

Overrides:

toString in class java.lang.Object