org.gvsig.dwg.lib.util

Class Vector3D

java.lang.Object

org.gvsig.dwg.lib.util.Vector3D

public final class Vector3D
extends Object

3dim double vector. A vector is transformed different than a point. The class is now declared final to allow a more aggresive optimization.

See Also:

dxfviewer.math.Point3D;

Field Summary

Fields

Modifier and Type	Field and Description
double	x
double	y
double	z

Constructor Summary

Constructors

Constructor and Description
Vector3D()
Vector3D(double xx, double yy, double zz)
Vector3D(Point3D p) Copy from a point.
Vector3D(Vector3D v) Copy constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(Vector3D v) Add a vector.
Vector3D	cross(Vector3D v) Cross product.
double	length() Calculate the length.
Point3D	minus(Point3D p) Get difference with point.
Vector3D	minus(Vector3D v) Get difference with vector.
double	mult(Vector3D v) Scalar product.
void	normalize() Normalize.
Point3D	plus(Point3D p) Get sum of this vector and point.
Vector3D	plus(Vector3D v) Get sum of vectors.
void	scale(double f) Scale.
void	sub(Vector3D v) Substract a vector from this.
String	toString() Output.

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

Vector3D

public Vector3D()

Vector3D

public Vector3D(Vector3D v)

Copy constructor.

Parameters:

v - vector to copy

Vector3D

public Vector3D(Point3D p)

Copy from a point.

Parameters:

p - point to copy

Vector3D

public Vector3D(double xx,
        double yy,
        double zz)

Parameters:

xx - x coord

yy - y coord

zz - z coord

Method Detail

length

public double length()

Calculate the length.

Returns:

length of vector

scale

public void scale(double f)

Scale.

Parameters:

f - scaling factor

normalize

public void normalize()

Normalize. Scale vector so it has length 1.

add

public void add(Vector3D v)

Add a vector.

Parameters:

v - vector to add

plus

public Vector3D plus(Vector3D v)

Get sum of vectors.

Parameters:

v - vector to add

Returns:

this+v

plus

public Point3D plus(Point3D p)

Get sum of this vector and point.

Parameters:

p - point to add

Returns:

this+p

sub

public void sub(Vector3D v)

Substract a vector from this.

Parameters:

v - vector to substract

minus

public Point3D minus(Point3D p)

Get difference with point.

Parameters:

p - point to substract

Returns:

this-p = -(p-this)

minus

public Vector3D minus(Vector3D v)

Get difference with vector.

Parameters:

v - vector to substract

Returns:

this-v

mult

public double mult(Vector3D v)

Scalar product.

Parameters:

v - vector to multiply

Returns:

this*v

cross

public Vector3D cross(Vector3D v)

Cross product.

Parameters:

v - vector to multiply

Returns:

this x v

toString

public String toString()

Output.

Overrides:

toString in class Object

Returns:

string representation