org.freehep.graphics3d
Class Vector3

java.lang.Object
  org.freehep.graphics3d.Vector3

Direct Known Subclasses:

Scale, Translate

public class Vector3

extends Object

Keeps a 3 dimensional vector.

Original ArcBall C code from Ken Shoemake, Graphics Gems IV, 1993.

Version:

$Id: Vector3.java,v 1.2 2002/06/12 23:15:15 duns Exp $

Author:

Mark Donszelmann

Source Code:

Vector3.java

Field Summary

double	x
double	y
double	z

Constructor Summary

Vector3()
creates null vector

Vector3(double x, double y, double z)
creates vector from x,y,z

Vector3(Vector3 v)
creates vector from v

Method Summary

Vector3	add(Vector3 v, Vector3 r)
Vector3	bisect(Vector3 v, Vector3 r)
Vector3	cross(Vector3 v, Vector3 r)
double	dot(Vector3 v)
double	length()
Vector3	negate(Vector3 r)
Vector3	normalize(Vector3 r)
Vector3	scale(double s, Vector3 r)
Vector3	set(double x, double y, double z)
Vector3	sub(Vector3 s, Vector3 r)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

x

public double x

y

public double y

z

public double z

Constructor Detail

Vector3

public Vector3(double x,
               double y,
               double z)

creates vector from x,y,z

Vector3

public Vector3()

creates null vector

Vector3

public Vector3(Vector3 v)

creates vector from v

Method Detail

toString

public String toString()

Returns:

string representation of vector

length

public double length()

Returns:

length

normalize

public Vector3 normalize(Vector3 r)

Returns:

normal vector , or null if length is 0

scale

public Vector3 scale(double s,
                     Vector3 r)

Returns:

vector scaled by s

sub

public Vector3 sub(Vector3 s,
                   Vector3 r)

Returns:

difference between vector and s

add

public Vector3 add(Vector3 v,
                   Vector3 r)

Returns:

sum of vector and v

negate

public Vector3 negate(Vector3 r)

Returns:

the negation of vector

dot

public double dot(Vector3 v)

Returns:

dot product of vector and v

cross

public Vector3 cross(Vector3 v,
                     Vector3 r)

Returns:

cross produc of vector x v

bisect

public Vector3 bisect(Vector3 v,
                      Vector3 r)

Returns:

half arc between vector and v

set

public Vector3 set(double x,
                   double y,
                   double z)

Returns:

the vector set to x,y,z