Matrix4D

java.lang.Object
- org.gvsig.dwg.lib.util.Matrix4D

```
public final class Matrix4D
extends java.lang.Object
```
4x4dim double matrix used for perspective transformations. The class is now declared final to allow a more aggresive optimization.

Field Summary

Fields
Modifier and Type	Field and Description
`double`	`ww`
`double`	`wx`
`double`	`wy`
`double`	`wz`
`double`	`xw`
`double`	`xx`
`double`	`xy`
`double`	`xz`
`double`	`yw`
`double`	`yx`
`double`	`yy`
`double`	`yz`
`double`	`zw`
`double`	`zx`
`double`	`zy`
`double`	`zz`

Constructor Summary

Constructors
Constructor and Description
`Matrix4D()` Create identity matrix.
`Matrix4D(double mxx, double mxy, double mxz, double mxw, double myx, double myy, double myz, double myw, double mzx, double mzy, double mzz, double mzw, double mwx, double mwy, double mwz, double mww)`
`Matrix4D(Matrix4D m)` Copy constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`identity()` Reset to identity
`void`	`moveBy(double x, double y, double z)` Move the stuff.
`void`	`moveBy(Vector3D v)` Translate the origin
`Matrix4D`	`mult(Matrix4D m)` Matrix multiplication.
`Point3D`	`mult(Point3D p)` Matrix multiplication of point.
`Vector3D`	`mult(Vector3D v)` Matrix multiplication of vector.
`void`	`multBy(Matrix4D m)` Matrix multiplication.
`void`	`multLeftBy(Matrix4D m)` Matrix multiplication from left.
`void`	`scale(double f)` Scale.
`void`	`scale(double fx, double fy, double fz)` Scale different in x,y,z.
`java.lang.String`	`toString()` Output
`void`	`transform(Point3D p)` Transformation of 1 point.
`void`	`transform(Point3D[] v, int[] tx, int[] ty, int[] tz, int npoints)` Transform some points.
`void`	`transform(Vector3D v)` Transformation of 1 vector.
`void`	`transformXY(Point3D p)` Transformacion de un punto considerando solo el plano horizontal
`void`	`translate(double x, double y, double z)` Translate the origin.
`void`	`translate(Vector3D v)` Translate the origin
`void`	`translateLeft(double x, double y, double z)` Translate.
`void`	`translateLeft(Vector3D v)` Translate the origin
`void`	`transponize()` Transponize.
`void`	`xrot(double theta)` Rotate theta degrees about the x axis.
`void`	`yrot(double theta)` Rotate theta degrees about the y axis.
`void`	`zrot(double theta)` Rotate theta degrees about the z axis.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - xx
```
public double xx
```
  - xy
```
public double xy
```
  - xz
```
public double xz
```
  - xw
```
public double xw
```
  - yx
```
public double yx
```
  - yy
```
public double yy
```
  - yz
```
public double yz
```
  - yw
```
public double yw
```
  - zx
```
public double zx
```
  - zy
```
public double zy
```
  - zz
```
public double zz
```
  - zw
```
public double zw
```
  - wx
```
public double wx
```
  - wy
```
public double wy
```
  - wz
```
public double wz
```
  - ww
```
public double ww
```
- Constructor Detail
  - Matrix4D
```
public Matrix4D()
```
    Create identity matrix.
  - Matrix4D
```
public Matrix4D(Matrix4D m)
```
    Copy constructor.
    
    Parameters:
    
    m - matrix to copy
  - Matrix4D
```
public Matrix4D(double mxx,
                double mxy,
                double mxz,
                double mxw,
                double myx,
                double myy,
                double myz,
                double myw,
                double mzx,
                double mzy,
                double mzz,
                double mzw,
                double mwx,
                double mwy,
                double mwz,
                double mww)
```
    Parameters:
    
    mxx - 1st elem in 1st row
    
    mxy - 2nd elem in 1st row
    
    mxz - 3rd elem in 1st row
    
    mxw - 4th elem in 1st row
    
    myx - 1st elem in 2nd row
    
    myy - 2nd elem in 2nd row
    
    myz - 3rd elem in 2nd row
    
    myw - 4th elem in 2nd row
    
    mzx - 1st elem in 3rd row
    
    mzy - 2nd elem in 3rd row
    
    mzz - 3rd elem in 3rd row
    
    mzw - 4th elem in 3rd row
    
    mwx - 1st elem in 4th row
    
    mwy - 2nd elem in 4th row
    
    mwz - 3rd elem in 4th row
    
    mww - 4th elem in 4th row
- Method Detail
  - identity
```
public void identity()
```
    Reset to identity
  - transponize
```
public void transponize()
```
    Transponize.
  - mult
```
public Vector3D mult(Vector3D v)
```
    Matrix multiplication of vector.
    
    Parameters:
    
    v - vector to transform
    
    Returns:
    
    transformed vector
  - transform
```
public void transform(Vector3D v)
```
    Transformation of 1 vector.
    
    Parameters:
    
    v - vector to transform
  - mult
```
public Point3D mult(Point3D p)
```
    Matrix multiplication of point.
    
    Parameters:
    
    p - point to transform
    
    Returns:
    
    transformed point
  - transform
```
public void transform(Point3D p)
```
    Transformation of 1 point.
    
    Parameters:
    
    p - point to transform
  - transformXY
```
public void transformXY(Point3D p)
```
    Transformacion de un punto considerando solo el plano horizontal
  - mult
```
public Matrix4D mult(Matrix4D m)
```
    Matrix multiplication.
    
    Parameters:
    
    m - matrix to multiply with
    
    Returns:
    
    this * m
  - multBy
```
public void multBy(Matrix4D m)
```
    Matrix multiplication.
    
    Parameters:
    
    m - matrix to multply with
  - multLeftBy
```
public void multLeftBy(Matrix4D m)
```
    Matrix multiplication from left.
    
    Parameters:
    
    m - matrix to multiply with.
  - translate
```
public void translate(double x,
                      double y,
                      double z)
```
    Translate the origin.
    
    Parameters:
    
    x - translation in x
    
    y - translation in y
    
    z - translation in z
  - translate
```
public void translate(Vector3D v)
```
    Translate the origin
    
    Parameters:
    
    v - translation vector
  - translateLeft
```
public void translateLeft(double x,
                          double y,
                          double z)
```
    Translate.
    
    Parameters:
    
    x - translation in x
    
    y - translation in y
    
    z - translation in z
  - translateLeft
```
public void translateLeft(Vector3D v)
```
    Translate the origin
    
    Parameters:
    
    v - tranbslation vector
  - moveBy
```
public void moveBy(double x,
                   double y,
                   double z)
```
    Move the stuff.
    
    Parameters:
    
    x - translation in x
    
    y - translation in y
    
    z - translation in z
  - moveBy
```
public void moveBy(Vector3D v)
```
    Translate the origin
    
    Parameters:
    
    v - translation vector
  - yrot
```
public void yrot(double theta)
```
    Rotate theta degrees about the y axis.
    
    Parameters:
    
    theta - rotation angle in rad
  - xrot
```
public void xrot(double theta)
```
    Rotate theta degrees about the x axis.
    
    Parameters:
    
    theta - rotation angle in rad
  - zrot
```
public void zrot(double theta)
```
    Rotate theta degrees about the z axis.
    
    Parameters:
    
    theta - rotation angle in rad
  - scale
```
public void scale(double f)
```
    Scale.
    
    Parameters:
    
    f - factor to scale with.
  - scale
```
public void scale(double fx,
                  double fy,
                  double fz)
```
    Scale different in x,y,z.
    
    Parameters:
    
    fx - scaling factor in x
    
    fy - scaling factor in y
    
    fz - scaling factor in z
  - transform
```
public void transform(Point3D[] v,
                      int[] tx,
                      int[] ty,
                      int[] tz,
                      int npoints)
```
    Transform some points.
    
    Parameters:
    
    v - points to transform
    
    tx - transformed points x coord
    
    ty - transformed points y coord
    
    tz - transformed points z coord
    
    npoints - nr of points to transform
  - toString
```
public java.lang.String toString()
```
    Output
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    String representing this.

Class Matrix4D

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

xx

xy

xz

xw

yx

yy

yz

yw

zx

zy

zz

zw

wx

wy

wz

ww

Constructor Detail

Matrix4D

Matrix4D

Matrix4D

Method Detail

identity

transponize

mult

transform

mult

transform

transformXY

mult

multBy

multLeftBy

translate

translate

translateLeft

translateLeft

moveBy

moveBy

yrot

xrot

zrot

scale

scale

transform

toString