Commit b7ade5cb authored by Calvin Metcalf's avatar Calvin Metcalf
Browse files

oblequie mercator working

parent 76120ca1

src/constants.js

+4 −1
Original line number Diff line number Diff line
@@ -297,7 +297,10 @@ define(function() { 
    "Transverse_Mercator": "tmerc",

    "Transverse Mercator": "tmerc",

    "Lambert Azimuthal Equal Area": "laea",

    "Universal Transverse Mercator System": "utm"

    "Universal Transverse Mercator System": "utm",

    "Hotine_Oblique_Mercator":"omerc",

    "Hotine Oblique Mercator":"omerc",

    "Hotine_Oblique_Mercator_Azimuth_Natural_Origin":"omerc"

  };



  // Based on proj4 CTABLE  structure :

src/wkt2.js

+35 −17
Original line number Diff line number Diff line
@@ -89,6 +89,19 @@ define(['./extend','./constants','./common'],function(extend,constants,common) { 
      }

    }

  }

  function rename(obj, params){

    var outName=params[0];

    var inName = params[1];

    if(!(outName in obj)&&(inName in obj)){

      obj[outName]=obj[inName];

      if(params.length===3){

        obj[outName]=params[2](obj[outName]);

      }

    }

  }

  function d2r(input){

    return input*common.D2R;

  }

  function cleanWKT(wkt){

    if(wkt.type === 'GEOGCS'){

      wkt.projName = 'longlat';
@@ -110,23 +123,28 @@ define(['./extend','./constants','./common'],function(extend,constants,common) { 
        wkt.rf = wkt.GEOGCS.DATUM.SPHEROID.rf;

      }

    }

    wkt.false_easting=wkt.False_Easting;

    wkt.false_northing=wkt.False_Northing;

    wkt.central_meridian=wkt.Central_Meridian;

    wkt.latitude_of_origin = wkt.Latitude_Of_Origin;

    wkt.scale_factor=wkt.Scale_Factor;

    wkt.x0 = parseFloat(wkt.false_easting,10);

    wkt.y0 = parseFloat(wkt.false_northing,10);

    wkt.lat1=wkt.Standard_Parallel_1 * common.D2R;

    wkt.lat2=wkt.Standard_Parallel_2 * common.D2R;

    wkt.k0=wkt.scale_factor;

    if(wkt.central_meridian){

      wkt.long0 = wkt.central_meridian * common.D2R;

    }

    if(wkt.latitude_of_origin){

      wkt.lat0 = wkt.latitude_of_origin * common.D2R;

    }

    wkt.srsCode = wkt.name;

    var renamer = rename.bind(null,wkt);

    var list = [

      ['false_easting','False_Easting'],

      ['false_northing','False_Northing'],

      ['central_meridian','Central_Meridian'],

      ['latitude_of_origin','Latitude_Of_Origin'],

      ['scale_factor','Scale_Factor'],

      ['k0','scale_factor'],

      ['latitude_of_center','Latitude_of_center'],

      ['lat0','latitude_of_center',d2r],

      ['longitude_of_center','Longitude_Of_Center'],

      ['longc','longitude_of_center',d2r],

      ['x0','false_easting',parseFloat],

      ['y0','false_northing',parseFloat],

      ['long0','central_meridian',d2r],

      ['lat0','latitude_of_origin',d2r],

      ['lat1','Standard_Parallel_1',d2r],

      ['lat2','Standard_Parallel_2',d2r],

      ['alpha','azimuth',d2r],

      ['srsCode','name']

    ];

    list.forEach(renamer);

  }

  return function(wkt, self) {

    var lisp = JSON.parse(("," + wkt).replace(/\,([A-Z_0-9]+?)(\[)/g, ',["$1",').slice(1).replace(/\,([A-Z_0-9]+?)\]/g, ',"$1"]'));

test/testData.js

+8 −0
Original line number Diff line number Diff line
@@ -157,5 +157,13 @@ var aWKT = [ 
	code:'ESRI:102286',

	testPoint:[[-70, 41],[326219.2329381689, 751109.8626785288]],

	wkt:'PROJCS["NAD_1983_HARN_StatePlane_Massachusetts_Mainland_FIPS_2001",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",200000],PARAMETER["False_Northing",750000],PARAMETER["Central_Meridian",-71.5],PARAMETER["Standard_Parallel_1",41.71666666666667],PARAMETER["Standard_Parallel_2",42.68333333333333],PARAMETER["Latitude_Of_Origin",41],UNIT["Meter",1]]'

	},

{

	name:"NAD83 / Alaska zone 1",

	units:"Meter",

	proj:'omerc',

	code:'EPSG:26931',

	testPoint:[[-135,56],[4916815.274147286, -5110540.771739297]],

	wkt:'PROJCS["NAD83 / Alaska zone 1",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Natural_Origin"],PARAMETER["latitude_of_center",57],PARAMETER["longitude_of_center",-133.6666666666667],PARAMETER["azimuth",323.1301023611111],PARAMETER["rectified_grid_angle",323.1301023611111],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",5000000],PARAMETER["false_northing",-5000000],UNIT["Meter",1]]'

	}

];