org.deegree.commons.utils
Class MapUtils

java.lang.Object
  org.deegree.commons.utils.MapUtils

public class MapUtils
extends Object

MapUtils Note: methods currently more or less copied from deegree 2.

Version:

$Revision: 19845 $, $Date: 2009-09-29 14:54:14 +0200 (Di, 29 Sep 2009) $

Author:

Andreas Schmitz, last edited by: $Author: mschneider $

Field Summary

static double	DEFAULT_PIXEL_SIZE The Value of a PixelSize
static double	SQRT2 The value of sqrt(2)

Constructor Summary

MapUtils()

Method Summary

static double	calcDistance(double lon1, double lat1, double lon2, double lat2) calculates the distance in meters between two points in EPSG:4326 coodinates. this is a convenience method assuming the world is a ball
static double	calcScaleWMS111(int mapWidth, int mapHeight, Envelope bbox, CoordinateSystem crs)
static double	calcScaleWMS130(int mapWidth, int mapHeight, Envelope bbox, CoordinateSystem crs)

Methods inherited from class java.lang.Object

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

Field Detail

SQRT2

public static final double SQRT2

The value of sqrt(2)

DEFAULT_PIXEL_SIZE

public static final double DEFAULT_PIXEL_SIZE

The Value of a PixelSize

See Also:

Constant Field Values

Constructor Detail

MapUtils

public MapUtils()

Method Detail

calcScaleWMS111

public static double calcScaleWMS111(int mapWidth,
                                     int mapHeight,
                                     Envelope bbox,
                                     CoordinateSystem crs)

Parameters:

mapWidth -

mapHeight -

bbox -

crs -

Returns:

the WMS 1.1.1 scale (size of the diagonal pixel)

calcScaleWMS130

public static double calcScaleWMS130(int mapWidth,
                                     int mapHeight,
                                     Envelope bbox,
                                     CoordinateSystem crs)

Parameters:

mapWidth -

mapHeight -

bbox -

crs -

Returns:

the WMS 1.3.0 scale (horizontal size of the pixel, pixel size == 0.28mm)

calcDistance

public static double calcDistance(double lon1,
                                  double lat1,
                                  double lon2,
                                  double lat2)

calculates the distance in meters between two points in EPSG:4326 coodinates. this is a convenience method assuming the world is a ball

Parameters:

lon1 -

lat1 -

lon2 -

lat2 -

Returns:

the distance in meters between two points in EPSG:4326 coords