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// ********************************************************************** ///* w w w . j a v a2 s. com*/ // <copyright> // // BBN Technologies // 10 Moulton Street // Cambridge, MA 02138 // (617) 873-8000 // // Copyright (C) BBNT Solutions LLC. All rights reserved. // // </copyright> // ********************************************************************** package com.jwetherell.openmap.common; public class ZonedUTMPoint extends UTMPoint { public ZonedUTMPoint() { super(); } public ZonedUTMPoint(LatLonPoint llpoint) { super(llpoint); zone_letter = getLetterDesignator(llpoint.getLatitude()); } public ZonedUTMPoint(LatLonPoint llpoint, Ellipsoid ellip) { super(llpoint, ellip); zone_letter = getLetterDesignator(llpoint.getLatitude()); } public ZonedUTMPoint(double northing, double easting, int zone_number, char zone_letter) { super(northing, easting, zone_number, MGRSPoint.MGRSZoneToUTMZone(zone_letter)); this.zone_letter = zone_letter; } /** * Converts UTM coords to lat/long given an ellipsoid. * <p> * Equations from USGS Bulletin 1532 <br> * East Longitudes are positive, West longitudes are negative. <br> * North latitudes are positive, South latitudes are negative. <br> * * @param ellip * an ellipsoid definition. * @param UTMNorthing * A float value for the northing to be converted. * @param UTMEasting * A float value for the easting to be converted. * @param ZoneNumber * An int value specifiying the UTM zone number. * @param ZoneLetter * A char value specifying the ZoneLetter within the ZoneNumber, * letter being MGRS zone. * @param llpoint * a LatLonPoint, if you want it to be filled in with the * results. If null, a new LatLonPoint will be allocated. * @return A LatLonPoint class instance containing the lat/long value, or * <code>null</code> if conversion failed. If you pass in a * LatLonPoint, it will be returned as well, if successful. */ public static LatLonPoint ZonedUTMtoLL(Ellipsoid ellip, double UTMNorthing, double UTMEasting, int ZoneNumber, char ZoneLetter, LatLonPoint llpoint) { return UTMPoint.UTMtoLL(ellip, UTMNorthing, UTMEasting, ZoneNumber, MGRSPoint.MGRSZoneToUTMZone(ZoneLetter), llpoint); } /** * Determines the correct MGRS letter designator for the given latitude * returns 'Z' if latitude is outside the MGRS limits of 84N to 80S. * * @param lat * The float value of the latitude. * * @return A char value which is the MGRS zone letter. */ protected char getLetterDesignator(double lat) { // This is here as an error flag to show that the Latitude is // outside MGRS limits char LetterDesignator = 'Z'; if ((84 >= lat) && (lat >= 72)) LetterDesignator = 'X'; else if ((72 > lat) && (lat >= 64)) LetterDesignator = 'W'; else if ((64 > lat) && (lat >= 56)) LetterDesignator = 'V'; else if ((56 > lat) && (lat >= 48)) LetterDesignator = 'U'; else if ((48 > lat) && (lat >= 40)) LetterDesignator = 'T'; else if ((40 > lat) && (lat >= 32)) LetterDesignator = 'S'; else if ((32 > lat) && (lat >= 24)) LetterDesignator = 'R'; else if ((24 > lat) && (lat >= 16)) LetterDesignator = 'Q'; else if ((16 > lat) && (lat >= 8)) LetterDesignator = 'P'; else if ((8 > lat) && (lat >= 0)) LetterDesignator = 'N'; else if ((0 > lat) && (lat >= -8)) LetterDesignator = 'M'; else if ((-8 > lat) && (lat >= -16)) LetterDesignator = 'L'; else if ((-16 > lat) && (lat >= -24)) LetterDesignator = 'K'; else if ((-24 > lat) && (lat >= -32)) LetterDesignator = 'J'; else if ((-32 > lat) && (lat >= -40)) LetterDesignator = 'H'; else if ((-40 > lat) && (lat >= -48)) LetterDesignator = 'G'; else if ((-48 > lat) && (lat >= -56)) LetterDesignator = 'F'; else if ((-56 > lat) && (lat >= -64)) LetterDesignator = 'E'; else if ((-64 > lat) && (lat >= -72)) LetterDesignator = 'D'; else if ((-72 > lat) && (lat >= -80)) LetterDesignator = 'C'; return LetterDesignator; } /** * {@inheritDoc} */ @Override public String toString() { return "Zone_number=" + zone_number + ", Hemisphere=" + zone_letter + ", Northing=" + northing + ", Easting=" + easting; } }