net.java.html.leaflet

Class Transformation

java.lang.Object

net.java.html.leaflet.Transformation

public final class Transformation
extends Object

Represents an affine transformation: a set of coefficients a, b, c, d for transforming a point of a form (x, y) into (a*x + b, c*y + d) and doing the reverse.

Constructor Summary

Constructors

Constructor and Description
Transformation(double a, double b, double c, double d) Creates a transformation object with the given coefficients.

Method Summary

Modifier and Type	Method and Description
Point	transform(Point point) Returns a transformed point.
Point	transform(Point point, double scale) Returns a transformed point, multiplied by the given scale.
Point	untransform(Point point) Returns the reverse transformation of the given point, optionally divided by the given scale.
Point	untransform(Point point, double scale) Returns the reverse transformation of the given point, optionally divided by the given scale.

Methods inherited from class java.lang.Object

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

Constructor Detail

Transformation

public Transformation(double a,
                      double b,
                      double c,
                      double d)

Creates a transformation object with the given coefficients.

Parameters:

a - Coefficient a

b - Coefficient b

c - Coefficient c

d - Coefficient d

Method Detail

transform

public Point transform(Point point)

Returns a transformed point.

Parameters:

point - The Point to transform

Returns:

The transformed point

transform

public Point transform(Point point,
                       double scale)

Returns a transformed point, multiplied by the given scale.

Parameters:

point - The Point to transform

scale - The applied scale factor

Returns:

The transformed point

untransform

public Point untransform(Point point)

Returns the reverse transformation of the given point, optionally divided by the given scale.

Parameters:

point - The Point to reverse transform

Returns:

The reverse transformed point

untransform

public Point untransform(Point point,
                         double scale)

Returns the reverse transformation of the given point, optionally divided by the given scale.

Parameters:

point - The Point to reverse transform

scale - The applied scale factor

Returns:

The reverse transformed point