org.apache.commons.math3.geometry.euclidean.twod
Class Line.LineTransform

java.lang.Object
  org.apache.commons.math3.geometry.euclidean.twod.Line.LineTransform

All Implemented Interfaces:

Transform<Euclidean2D,Euclidean1D>

Enclosing class:

Line

private static class Line.LineTransform
extends Object
implements Transform<Euclidean2D,Euclidean1D>

Class embedding an affine transform.

This class is used in order to apply an affine transform to a line. Using a specific object allow to perform some computations on the transform only once even if the same transform is to be applied to a large number of lines (for example to a large polygon)./

Field Summary

private double	c11
private double	c1X
private double	c1Y
private double	cX1
private double	cXX
private double	cXY
private double	cY1
private double	cYX
private double	cYY

Constructor Summary

Line.LineTransform(AffineTransform transform)
Build an affine line transform from a n AffineTransform.

Method Summary

Line	apply(Hyperplane<Euclidean2D> hyperplane) Transform an hyperplane of a space.
SubHyperplane<Euclidean1D>	apply(SubHyperplane<Euclidean1D> sub, Hyperplane<Euclidean2D> original, Hyperplane<Euclidean2D> transformed) Transform a sub-hyperplane embedded in an hyperplane.
Vector2D	apply(Vector<Euclidean2D> point) Transform a point of a space.

Methods inherited from class java.lang.Object

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

Field Detail

cXX

private double cXX

cXY

private double cXY

cX1

private double cX1

cYX

private double cYX

cYY

private double cYY

cY1

private double cY1

c1Y

private double c1Y

c1X

private double c1X

c11

private double c11

Constructor Detail

Line.LineTransform

public Line.LineTransform(AffineTransform transform)
                   throws MathIllegalArgumentException

Build an affine line transform from a n AffineTransform.

Parameters:

transform - transform to use (must be invertible otherwise the apply(Hyperplane) method would work only for some lines, and fail for other ones)

Throws:

MathIllegalArgumentException - if the transform is non invertible

Method Detail

apply

public Vector2D apply(Vector<Euclidean2D> point)

Transform a point of a space.

Specified by:

apply in interface Transform<Euclidean2D,Euclidean1D>

Parameters:

point - point to transform

Returns:

a new object representing the transformed point

apply

public Line apply(Hyperplane<Euclidean2D> hyperplane)

Transform an hyperplane of a space.

Specified by:

apply in interface Transform<Euclidean2D,Euclidean1D>

Parameters:

hyperplane - hyperplane to transform

Returns:

a new object representing the transformed hyperplane

apply

public SubHyperplane<Euclidean1D> apply(SubHyperplane<Euclidean1D> sub,
                                        Hyperplane<Euclidean2D> original,
                                        Hyperplane<Euclidean2D> transformed)

Transform a sub-hyperplane embedded in an hyperplane.

Specified by:

apply in interface Transform<Euclidean2D,Euclidean1D>

Parameters:

sub - sub-hyperplane to transform

original - hyperplane in which the sub-hyperplane is defined (this is the original hyperplane, the transform has not been applied to it)

transformed - hyperplane in which the sub-hyperplane is defined (this is the transformed hyperplane, the transform has been applied to it)

Returns:

a new object representing the transformed sub-hyperplane