Package org.insa.graphs.gui.drawing

Class MercatorProjection

java.lang.Object

org.insa.graphs.gui.drawing.MercatorProjection

All Implemented Interfaces:

Projection

public class MercatorProjection
extends java.lang.Object
implements Projection

Field Summary

Fields

Modifier and Type	Field	Description
private double	height
private static double	IMAGE_HEIGHT
private static double	IMAGE_WIDTH
static double	MAX_LATITUDE
private static double	MAX_LATITUDE_PROJ
private float	maxLatitude
private double	maxLatitudeProj
private float	maxLongitude
static double	MIN_LATITUDE
private static double	MIN_LATITUDE_PROJ
private float	minLatitude
private double	minLatitudeProj
private float	minLongitude
private double	width

Constructor Summary

Constructors

Constructor	Description
MercatorProjection(GraphStatistics.BoundingBox boundingBox, int maxSize)	Create a new MercatorProjection corresponding to the given BoundingBox and maxSize.

Method Summary

Modifier and Type	Method	Description
protected java.awt.Dimension	computeImageSize(int maxSize)	Compute the dimension required for drawing a projection of the given box on an image, ensuring that none of the side of image is greater than maxSize.
double	getImageHeight()
double	getImageWidth()
int	latitudeToPixelY(float latitude)	Project the given latitude on the image.
int	longitudeToPixelX(float longitude)	Project the given longitude on the image.
float	pixelXToLongitude(double px)	Retrieve the longitude associated to the given projected point.
float	pixelYToLatitude(double py)	Retrieve the latitude associated to the given projected point.
private static double	projectY(double latitude)	Compute the projection (without scaling) of the given latitude.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_LATITUDE

public static final double MAX_LATITUDE

See Also:

Constant Field Values

MIN_LATITUDE

public static final double MIN_LATITUDE

See Also:

Constant Field Values

IMAGE_WIDTH

private static final double IMAGE_WIDTH

See Also:

Constant Field Values

IMAGE_HEIGHT

private static final double IMAGE_HEIGHT

See Also:

Constant Field Values

MAX_LATITUDE_PROJ

private static final double MAX_LATITUDE_PROJ

MIN_LATITUDE_PROJ

private static final double MIN_LATITUDE_PROJ

minLatitude

private final float minLatitude

minLongitude

private final float minLongitude

maxLatitude

private final float maxLatitude

maxLongitude

private final float maxLongitude

minLatitudeProj

private final double minLatitudeProj

maxLatitudeProj

private final double maxLatitudeProj

width

private final double width

height

private final double height

Constructor Detail

MercatorProjection

public MercatorProjection(GraphStatistics.BoundingBox boundingBox,
                          int maxSize)

Create a new MercatorProjection corresponding to the given BoundingBox and maxSize.

Parameters:

boundingBox - Box for this projection.

maxSize - Maximum size of any side (width / height) of the image to which this projection should draw.

Method Detail

projectY

private static double projectY(double latitude)

Compute the projection (without scaling) of the given latitude.

Parameters:

latitude - Latitude to project.

Returns:

Projection of the given latitude (without scaling).

computeImageSize

protected java.awt.Dimension computeImageSize(int maxSize)

Compute the dimension required for drawing a projection of the given box on an image, ensuring that none of the side of image is greater than maxSize.

Parameters:

maxSize - Maximum side of any side of the image.

Returns:

Dimension corresponding to the preferred size for the image.

getImageWidth

public double getImageWidth()

Specified by:

getImageWidth in interface Projection

Returns:

Image width for this projection to work properly.

getImageHeight

public double getImageHeight()

Specified by:

getImageHeight in interface Projection

Returns:

Image weight for this projection to work properly.

latitudeToPixelY

public int latitudeToPixelY(float latitude)

Description copied from interface: Projection

Project the given latitude on the image.

Specified by:

latitudeToPixelY in interface Projection

Parameters:

latitude - Latitude to project.

Returns:

Projected position of the latitude on the image.

longitudeToPixelX

public int longitudeToPixelX(float longitude)

Description copied from interface: Projection

Project the given longitude on the image.

Specified by:

longitudeToPixelX in interface Projection

Parameters:

longitude - Longitude to project.

Returns:

Projected position of the longitude on the image.

pixelYToLatitude

public float pixelYToLatitude(double py)

Description copied from interface: Projection

Retrieve the latitude associated to the given projected point.

Specified by:

pixelYToLatitude in interface Projection

Parameters:

py - Projected y-position for which latitude should be retrieved.

Returns:

The original latitude of the point.

pixelXToLongitude

public float pixelXToLongitude(double px)

Description copied from interface: Projection

Retrieve the longitude associated to the given projected point.

Specified by:

pixelXToLongitude in interface Projection

Parameters:

px - Projected x-position for which longitude should be retrieved.

Returns:

The original longitude of the point.