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Add all exports #2

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merged 3 commits into from
Feb 4, 2016
Merged

Add all exports #2

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9cab88d
upate package.json
pwilczynski Feb 3, 2016
5e4b2a3
Add exports and untility feature for zoneBounds
pwilczynski Feb 4, 2016
1d972cb
fix up tests
pwilczynski Feb 4, 2016
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109 changes: 80 additions & 29 deletions dist/mgrs.js
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,9 @@ var O = 79; // O
var V = 86; // V
var Z = 90; // Z

var ZDLS = "CDEFGHJKLMNPQRSTUVWX";
exports.ZDLS = ZDLS;

/**
* Conversion of lat/lon to MGRS.
*
Expand Down Expand Up @@ -94,6 +97,39 @@ function radToDeg(rad) {
return (180.0 * (rad / Math.PI));
}

function lonZone(ll) {
var Lat = ll.lat;
var Long = ll.lon;
ZoneNumber = Math.floor((Long + 180) / 6) + 1;

//Make sure the longitude 180.00 is in Zone 60
if (Long == 180) {
ZoneNumber = 60;
}

// Special zone for Norway
if (Lat >= 56.0 && Lat < 64.0 && Long >= 3.0 && Long < 12.0) {
ZoneNumber = 32;
}

// Special zones for Svalbard
if (Lat >= 72.0 && Lat < 84.0) {
if (Long >= 0.0 && Long < 9.0)
ZoneNumber = 31;
else if (Long >= 9.0 && Long < 21.0)
ZoneNumber = 33;
else if (Long >= 21.0 && Long < 33.0)
ZoneNumber = 35;
else if (Long >= 33.0 && Long < 42.0)
ZoneNumber = 37;
}
return ZoneNumber;
}

exports.lonZone = function(ll) {
return lonZone(ll);
}

/**
* Converts a set of Longitude and Latitude co-ordinates to UTM
* using the WGS84 ellipsoid.
Expand All @@ -105,7 +141,8 @@ function radToDeg(rad) {
* northing, zoneNumber and zoneLetter properties, and an optional
* accuracy property in digits. Returns null if the conversion failed.
*/
exports.LLtoUTM = function(ll) {

function LLtoUTM(ll) {
var Lat = ll.lat;
var Long = ll.lon;
var a = 6378137.0; //ellip.radius;
Expand All @@ -117,35 +154,8 @@ exports.LLtoUTM = function(ll) {
var LatRad = degToRad(Lat);
var LongRad = degToRad(Long);
var LongOriginRad;
var ZoneNumber;
// (int)
ZoneNumber = Math.floor((Long + 180) / 6) + 1;

//Make sure the longitude 180.00 is in Zone 60
if (Long === 180) {
ZoneNumber = 60;
}

// Special zone for Norway
if (Lat >= 56.0 && Lat < 64.0 && Long >= 3.0 && Long < 12.0) {
ZoneNumber = 32;
}

// Special zones for Svalbard
if (Lat >= 72.0 && Lat < 84.0) {
if (Long >= 0.0 && Long < 9.0) {
ZoneNumber = 31;
}
else if (Long >= 9.0 && Long < 21.0) {
ZoneNumber = 33;
}
else if (Long >= 21.0 && Long < 33.0) {
ZoneNumber = 35;
}
else if (Long >= 33.0 && Long < 42.0) {
ZoneNumber = 37;
}
}
var ZoneNumber = lonZone(ll);

LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3; //+3 puts origin
// in middle of
Expand Down Expand Up @@ -177,6 +187,10 @@ exports.LLtoUTM = function(ll) {
};
}

exports.LLtoUTM = function(ll) {
return LLtoUTM(ll);
}

/**
* Converts UTM coords to lat/long, using the WGS84 ellipsoid. This is a convenience
* class where the Zone can be specified as a single string eg."60N" which
Expand Down Expand Up @@ -274,6 +288,10 @@ function UTMtoLL(utm) {
return result;
}

exports.latZone = function(lat) {
return getLetterDesignator(lat);
}

/**
* Calculates the MGRS letter designator for the given latitude.
*
Expand Down Expand Up @@ -742,5 +760,38 @@ function getMinNorthing(zoneLetter) {

}

exports.zoneBounds = function(zoneNumber, zoneLetter) {
var latIndex = ZDLS.indexOf(zoneLetter);
var minLon = (zoneNumber - 1) * 6.0 - 180.0;
var minLat = latIndex * 8.0 - 80.0;
var latRange = 8.0;
var lonRange = 6.0;
if (zoneLetter == 'X') {
latRange = 12.0;
if (zoneNumber == 31) {
lonRange = 9.0;
} else if (zoneNumber == 37) {
minLon -= 3.0;
lonRange = 9.0;
} else if (zoneNumber == 33 || zoneNumber == 35) {
lonRange = 12.0;
minLon -= 3.0;
}
} else if (zoneLetter == 'V') { // Norway special case areas.
if (zoneNumber == 31) {
lonRange = 3.0;
} else if (zoneNumber == 32) {
minLon -= 3.0;
lonRange = 9.0;
}
}
return {
minLon: minLon,
minLat: minLat,
lonRange: lonRange,
latRange: latRange
}
}

},{}]},{},[1])(1)
});
109 changes: 80 additions & 29 deletions mgrs.js
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,9 @@ var O = 79; // O
var V = 86; // V
var Z = 90; // Z

var ZDLS = "CDEFGHJKLMNPQRSTUVWX";
exports.ZDLS = ZDLS;

/**
* Conversion of lat/lon to MGRS.
*
Expand Down Expand Up @@ -93,6 +96,39 @@ function radToDeg(rad) {
return (180.0 * (rad / Math.PI));
}

function lonZone(ll) {
var Lat = ll.lat;
var Long = ll.lon;
ZoneNumber = Math.floor((Long + 180) / 6) + 1;

//Make sure the longitude 180.00 is in Zone 60
if (Long == 180) {
ZoneNumber = 60;
}

// Special zone for Norway
if (Lat >= 56.0 && Lat < 64.0 && Long >= 3.0 && Long < 12.0) {
ZoneNumber = 32;
}

// Special zones for Svalbard
if (Lat >= 72.0 && Lat < 84.0) {
if (Long >= 0.0 && Long < 9.0)
ZoneNumber = 31;
else if (Long >= 9.0 && Long < 21.0)
ZoneNumber = 33;
else if (Long >= 21.0 && Long < 33.0)
ZoneNumber = 35;
else if (Long >= 33.0 && Long < 42.0)
ZoneNumber = 37;
}
return ZoneNumber;
}

exports.lonZone = function(ll) {
return lonZone(ll);
}

/**
* Converts a set of Longitude and Latitude co-ordinates to UTM
* using the WGS84 ellipsoid.
Expand All @@ -104,7 +140,8 @@ function radToDeg(rad) {
* northing, zoneNumber and zoneLetter properties, and an optional
* accuracy property in digits. Returns null if the conversion failed.
*/
exports.LLtoUTM = function(ll) {

function LLtoUTM(ll) {
var Lat = ll.lat;
var Long = ll.lon;
var a = 6378137.0; //ellip.radius;
Expand All @@ -116,35 +153,8 @@ exports.LLtoUTM = function(ll) {
var LatRad = degToRad(Lat);
var LongRad = degToRad(Long);
var LongOriginRad;
var ZoneNumber;
// (int)
ZoneNumber = Math.floor((Long + 180) / 6) + 1;

//Make sure the longitude 180.00 is in Zone 60
if (Long === 180) {
ZoneNumber = 60;
}

// Special zone for Norway
if (Lat >= 56.0 && Lat < 64.0 && Long >= 3.0 && Long < 12.0) {
ZoneNumber = 32;
}

// Special zones for Svalbard
if (Lat >= 72.0 && Lat < 84.0) {
if (Long >= 0.0 && Long < 9.0) {
ZoneNumber = 31;
}
else if (Long >= 9.0 && Long < 21.0) {
ZoneNumber = 33;
}
else if (Long >= 21.0 && Long < 33.0) {
ZoneNumber = 35;
}
else if (Long >= 33.0 && Long < 42.0) {
ZoneNumber = 37;
}
}
var ZoneNumber = lonZone(ll);

LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3; //+3 puts origin
// in middle of
Expand Down Expand Up @@ -176,6 +186,10 @@ exports.LLtoUTM = function(ll) {
};
}

exports.LLtoUTM = function(ll) {
return LLtoUTM(ll);
}

/**
* Converts UTM coords to lat/long, using the WGS84 ellipsoid. This is a convenience
* class where the Zone can be specified as a single string eg."60N" which
Expand Down Expand Up @@ -273,6 +287,10 @@ function UTMtoLL(utm) {
return result;
}

exports.latZone = function(lat) {
return getLetterDesignator(lat);
}

/**
* Calculates the MGRS letter designator for the given latitude.
*
Expand Down Expand Up @@ -740,3 +758,36 @@ function getMinNorthing(zoneLetter) {
}

}

exports.zoneBounds = function(zoneNumber, zoneLetter) {
var latIndex = ZDLS.indexOf(zoneLetter);
var minLon = (zoneNumber - 1) * 6.0 - 180.0;
var minLat = latIndex * 8.0 - 80.0;
var latRange = 8.0;
var lonRange = 6.0;
if (zoneLetter == 'X') {
latRange = 12.0;
if (zoneNumber == 31) {
lonRange = 9.0;
} else if (zoneNumber == 37) {
minLon -= 3.0;
lonRange = 9.0;
} else if (zoneNumber == 33 || zoneNumber == 35) {
lonRange = 12.0;
minLon -= 3.0;
}
} else if (zoneLetter == 'V') { // Norway special case areas.
if (zoneNumber == 31) {
lonRange = 3.0;
} else if (zoneNumber == 32) {
minLon -= 3.0;
lonRange = 9.0;
}
}
return {
minLon: minLon,
minLat: minLat,
lonRange: lonRange,
latRange: latRange
}
}
2 changes: 1 addition & 1 deletion package.json
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"name": "mgrs",
"version": "0.0.4-alpha",
"version": "0.0.4-pwilczynski",
"description": "Utility for converting between WGS84 lat/lng and MGRS coordinates",
"main": "mgrs.js",
"scripts": {
Expand Down