Vector3D

java.lang.Object
- org.gvsig.dwg.lib.util.Vector3D

```
public final class Vector3D
extends java.lang.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

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

All Methods Instance Methods Concrete 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.
`java.lang.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 java.lang.String toString()
```
    Output.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    string representation

Class Vector3D

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

x

y

z

Constructor Detail

Vector3D

Vector3D

Vector3D

Vector3D

Method Detail

length

scale

normalize

add

plus

plus

sub

minus

minus

mult

cross

toString