jsky.coords

Interface WorldCoordinateConverter

All Known Subinterfaces:

CoordinateConverter

All Known Implementing Classes:

ImageCoordinateConverter, WCSTransform

public interface WorldCoordinateConverter

This defines the interface for converting between image and world coordinates.

Version:

$Revision: 1.4 $

Author:

Allan Brighton

Method Summary

Modifier and Type	Method and Description
double	getEquinox() Return the equinox used for coordinates (usually the equionx of the image)
double	getHeight() Return the image height in pixels.
double	getHeightInDeg() return the height in deg
Point2D.Double	getImageCenter() Return the image center coordinates in pixels (image coordinates).
Point2D.Double	getWCSCenter() Return the center RA,Dec coordinates in degrees.
double	getWidth() Return the image width in pixels.
double	getWidthInDeg() return the width in deg
void	imageToWorldCoords(Point2D.Double p, boolean isDistance) Convert the given image coordinates to world coordinates degrees in the equinox of the current image.
boolean	isWCS() Return true if world coordinates conversion is available.
void	worldToImageCoords(Point2D.Double p, boolean isDistance) Convert the given world coordinates (degrees, in the equinox of the current image) to image coordinates.

Method Detail

isWCS

boolean isWCS()

Return true if world coordinates conversion is available. This method should be called to check before calling any of the world coordinates conversion methods.

getEquinox

double getEquinox()

Return the equinox used for coordinates (usually the equionx of the image)

imageToWorldCoords

void imageToWorldCoords(Point2D.Double p,
                        boolean isDistance)

Convert the given image coordinates to world coordinates degrees in the equinox of the current image.

Parameters:

p - The point to convert.

isDistance - True if p should be interpreted as a distance instead of a point.

worldToImageCoords

void worldToImageCoords(Point2D.Double p,
                        boolean isDistance)

Convert the given world coordinates (degrees, in the equinox of the current image) to image coordinates.

Parameters:

p - The point to convert.

isDistance - True if p should be interpreted as a distance instead of a point.

getWCSCenter

Point2D.Double getWCSCenter()

Return the center RA,Dec coordinates in degrees.

getWidthInDeg

double getWidthInDeg()

return the width in deg

getHeightInDeg

double getHeightInDeg()

return the height in deg

getImageCenter

Point2D.Double getImageCenter()

Return the image center coordinates in pixels (image coordinates).

getWidth

double getWidth()

Return the image width in pixels.

getHeight

double getHeight()

Return the image height in pixels.