org.gvsig.fmap.geom.jts.transform

Class Transform3D

java.lang.Object

org.gvsig.fmap.geom.jts.transform.Transform3D

All Implemented Interfaces:

Transform

public class Transform3D
extends Object
implements Transform

Field Summary

Fields

Modifier and Type	Field and Description
static double	ACCURACY The constant used for testing results.
protected double	m00 coefficients for x coordinate.
protected double	m01 coefficients for x coordinate.
protected double	m02 coefficients for x coordinate.
protected double	m03 coefficients for x coordinate.
protected double	m10 coefficients for y coordinate.
protected double	m11 coefficients for y coordinate.
protected double	m12 coefficients for y coordinate.
protected double	m13 coefficients for y coordinate.
protected double	m20 coefficients for z coordinate.
protected double	m21 coefficients for z coordinate.
protected double	m22 coefficients for z coordinate.
protected double	m23 coefficients for z coordinate.

Constructor Summary

Constructors

Constructor and Description
Transform3D()
Transform3D(double[] coefs)
Transform3D(double xx, double yx, double zx, double tx, double xy, double yy, double zy, double ty, double xz, double yz, double zz, double tz)

Method Summary

Modifier and Type	Method and Description
double[]	coefficients() Returns the affine coefficients of the transform.
Transform	concatenate(Transform other) Returns the affine transform created by applying first the affine transform given by that, then this affine transform.
boolean	equals(Object obj) Compares two transforms.
Transform3D	inverse() Computes the inverse affine transform.
boolean	isIdentity()
Transform3D	preConcatenate(Transform other) Return the affine transform created by applying first this affine transform, then the affine transform given by that.
Point	transform(Point src) Transforms the input point.
Point[]	transform(Point[] src, Point[] dst) Transforms the input point array, stores the result in the pre-allocated array, and returns a pointer to the result array.

Methods inherited from class java.lang.Object

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

Field Detail

ACCURACY

public static final double ACCURACY

The constant used for testing results.

See Also:

Constant Field Values

m00

protected double m00

coefficients for x coordinate.

m01

protected double m01

coefficients for x coordinate.

m02

protected double m02

coefficients for x coordinate.

m03

protected double m03

coefficients for x coordinate.

m10

protected double m10

coefficients for y coordinate.

m11

protected double m11

coefficients for y coordinate.

m12

protected double m12

coefficients for y coordinate.

m13

protected double m13

coefficients for y coordinate.

m20

protected double m20

coefficients for z coordinate.

m21

protected double m21

coefficients for z coordinate.

m22

protected double m22

coefficients for z coordinate.

m23

protected double m23

coefficients for z coordinate.

Constructor Detail

Transform3D

public Transform3D()

Transform3D

public Transform3D(double[] coefs)

Transform3D

public Transform3D(double xx,
                   double yx,
                   double zx,
                   double tx,
                   double xy,
                   double yy,
                   double zy,
                   double ty,
                   double xz,
                   double yz,
                   double zz,
                   double tz)

Method Detail

isIdentity

public boolean isIdentity()

Specified by:

isIdentity in interface Transform

coefficients

public double[] coefficients()

Returns the affine coefficients of the transform. Result is an array of 12 double.

inverse

public Transform3D inverse()

Computes the inverse affine transform.

Specified by:

inverse in interface Transform

concatenate

public Transform concatenate(Transform other)

Returns the affine transform created by applying first the affine transform given by that, then this affine transform.

Specified by:

concatenate in interface Transform

Parameters:

that - the transform to apply first

Returns:

the composition this * that

preConcatenate

public Transform3D preConcatenate(Transform other)

Return the affine transform created by applying first this affine transform, then the affine transform given by that.

Specified by:

preConcatenate in interface Transform

Parameters:

other - the transform to apply in a second step

Returns:

the composition that * this

transform

public Point[] transform(Point[] src,
                         Point[] dst)

Transforms the input point array, stores the result in the pre-allocated array, and returns a pointer to the result array. A new array is created if res is null or has length smaller than of src.

Specified by:

transform in interface Transform

Parameters:

src -

dst -

Returns:

transform

public Point transform(Point src)

Transforms the input point.

Specified by:

transform in interface Transform

Parameters:

src -

Returns:

equals

public boolean equals(Object obj)

Compares two transforms. Returns true if all inner fields are equal up to the precision given by Shape3D.ACCURACY.

Overrides:

equals in class Object