jview
Class SelectTransform

java.lang.Object
  jview.AbstractFormattingTransform
      jview.BasicTransform
          jview.SelectTransform

All Implemented Interfaces:

CoordinateTransforming, DeltaFormattedTransforming, DeltaTransforming, FormattedTransforming, InvertableTransforming

public class SelectTransform
extends BasicTransform

A simple transform that let you define user-space coordinate indices that should be used in calculating the transform.

Field Summary

private int	x The index in the VectorG mapping to the x-coordinate.
static int	XINDEX The default x index.
private int	y The index in the VectorG mapping to the y-coordinate.
static int	YINDEX The default x index.

Constructor Summary

SelectTransform(Rectangle2D bounds)
Constructs a new selectable transform with default inidces zero and one.

SelectTransform(Rectangle2D bounds, int xindex, int yindex)
Constructs a new selectable transform with sepecified indices.

Method Summary

Point2D	toNormalizedSpace(VectorG xy) We re-arrange the argument and call the super method.
VectorG	toUserSpace(Point2D ab) We call the super method and return a vector of dimension equal to the maximum of x and y.

Methods inherited from class jview.BasicTransform

estimateX, estimateY, getDefiningRectangle, invertUserXY, setDateX, setDateY, setFlipX, setFlipY, setLogarithmicX, setLogarithmicY, toNormalizedDistance, toString, toUserDistance, useEstimatedFormats

Methods inherited from class jview.AbstractFormattingTransform

deltaFormatUserSpaceX, deltaFormatUserSpaceY, formatUserCoordinates, formatUserSpaceX, formatUserSpaceY, getFormatUserX, getFormatUserY, setDeltaFormatUserX, setDeltaFormatUserY, setFormatUserX, setFormatUserY

Methods inherited from class java.lang.Object

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

Field Detail

XINDEX

public static final int XINDEX

The default x index.

See Also:

Constant Field Values

YINDEX

public static final int YINDEX

The default x index.

See Also:

Constant Field Values

x

private int x

The index in the VectorG mapping to the x-coordinate.

y

private int y

The index in the VectorG mapping to the y-coordinate.

Constructor Detail

SelectTransform

public SelectTransform(Rectangle2D bounds)

Constructs a new selectable transform with default inidces zero and one.

SelectTransform

public SelectTransform(Rectangle2D bounds,
                       int xindex,
                       int yindex)

Constructs a new selectable transform with sepecified indices.

Method Detail

toNormalizedSpace

public Point2D toNormalizedSpace(VectorG xy)

We re-arrange the argument and call the super method.

Specified by:

toNormalizedSpace in interface CoordinateTransforming

Overrides:

toNormalizedSpace in class BasicTransform

Parameters:

xy - A vector of user coordinates.

Returns:

A point in normalized screen coordinate, with 0≤x,y≤1

toUserSpace

public VectorG toUserSpace(Point2D ab)

We call the super method and return a vector of dimension equal to the maximum of x and y.

Specified by:

toUserSpace in interface CoordinateTransforming

Overrides:

toUserSpace in class BasicTransform

Parameters:

ab - A pixel in normalized coordinates.

Returns:

A vector in user space, never null