Jcg.geometry

Class Transformation_2

java.lang.Object

Jcg.geometry.Transformation_2

public class Transformation_2
extends java.lang.Object

Define a 2D transformation (for points in the projective plane, using homogeneous coordinates)

Author:

Luca Castelli Aleardi

Field Summary

Fields

Modifier and Type	Field and Description
Jama.Matrix	m

Constructor Summary

Constructors

Constructor and Description
Transformation_2() The identity transformation
Transformation_2(double theta) Define a rotation of an angle theta
Transformation_2(double s1, double s2) Define a scaling by factors s1 and s2
Transformation_2(Jama.Matrix m) The identity transformation
Transformation_2(Vector_2 v) Define a translation by a vector v

Method Summary

Modifier and Type	Method and Description
Transformation_2	compose(Transformation_2 t) Compose two transformations
Point_2	transform(Point_2 p) Apply the transformation to point p (given in cartesian coordinates)

Methods inherited from class java.lang.Object

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

Field Detail

m

public Jama.Matrix m

Constructor Detail

Transformation_2

public Transformation_2(Jama.Matrix m)

The identity transformation

Transformation_2

public Transformation_2()

The identity transformation

Transformation_2

public Transformation_2(Vector_2 v)

Define a translation by a vector v

Transformation_2

public Transformation_2(double s1,
                        double s2)

Define a scaling by factors s1 and s2

Transformation_2

public Transformation_2(double theta)

Define a rotation of an angle theta

Method Detail

transform

public Point_2 transform(Point_2 p)

Apply the transformation to point p (given in cartesian coordinates)

compose

public Transformation_2 compose(Transformation_2 t)

Compose two transformations