constants.js

'use strict';

// projection names to d3 function name
exports.projNames = {
    'equirectangular': 'equirectangular',
    'mercator': 'mercator',
    'orthographic': 'orthographic',
    'natural earth': 'naturalEarth',
    'kavrayskiy7': 'kavrayskiy7',
    'miller': 'miller',
    'robinson': 'robinson',
    'eckert4': 'eckert4',
    'azimuthal equal area': 'azimuthalEqualArea',
    'azimuthal equidistant': 'azimuthalEquidistant',
    'conic equal area': 'conicEqualArea',
    'conic conformal': 'conicConformal',
    'conic equidistant': 'conicEquidistant',
    'gnomonic': 'gnomonic',
    'stereographic': 'stereographic',
    'mollweide': 'mollweide',
    'hammer': 'hammer',
    'transverse mercator': 'transverseMercator',
    'albers usa': 'albersUsa',
    'winkel tripel': 'winkel3',
    'aitoff': 'aitoff',
    'sinusoidal': 'sinusoidal',

    'airy': 'airy',
    // 'albers': 'albers',
    // 'armadillo': 'armadillo',
    'august': 'august',
    // 'baker': 'baker',
    // 'berghaus': 'berghaus',
    // 'bertin1953': 'bertin1953',
    'boggs': 'boggs',
    // 'bonne': 'bonne',
    // 'bottomley': 'bottomley',
    'bromley': 'bromley',
    // 'chamberlin': 'chamberlin',
    // 'chamberlin africa': 'chamberlinAfrica',
    'collignon': 'collignon',
    // 'craig': 'craig',
    'craster': 'craster',
    'cylindrical equal area': 'cylindricalEqualArea',
    'cylindrical stereographic': 'cylindricalStereographic',
    'eckert1': 'eckert1',
    'eckert2': 'eckert2',
    'eckert3': 'eckert3',
    'eckert5': 'eckert5',
    'eckert6': 'eckert6',
    'eisenlohr': 'eisenlohr',
    'fahey': 'fahey',
    'foucaut': 'foucaut',
    'foucaut sinusoidal': 'foucautSinusoidal',
    'gilbert': 'gilbert',
    // 'gingery': 'gingery',
    // 'ginzburg4': 'ginzburg4',
    'ginzburg5': 'ginzburg5',
    'ginzburg6': 'ginzburg6',
    'ginzburg8': 'ginzburg8',
    'ginzburg9': 'ginzburg9',
    'gringorten': 'gringorten',
    'guyou': 'guyou',
    // 'hammer retroazimuthal': 'hammerRetroazimuthal',
    // 'healpix': 'healpix',
    'hill': 'hill',
    // 'homolosine': 'homolosine',
    'hufnagel': 'hufnagel',
    'hyperelliptical': 'hyperelliptical',
    'lagrange': 'lagrange',
    // 'larrivee': 'larrivee',
    // 'laskowski': 'laskowski',
    // 'littrow': 'littrow',
    // 'loximuthal': 'loximuthal',
    // 'modified stereographic': 'modifiedStereographic',
    // 'modified stereographic alaska': 'modifiedStereographicAlaska',
    // 'modified stereographic gs48': 'modifiedStereographicGs48',
    // 'modified stereographic gs50': 'modifiedStereographicGs50',
    // 'modified stereographic miller': 'modifiedStereographicMiller',
    // 'modified stereographic lee': 'modifiedStereographicLee',
    'mt flat polar parabolic': 'mtFlatPolarParabolic',
    'mt flat polar quartic': 'mtFlatPolarQuartic',
    'mt flat polar sinusoidal': 'mtFlatPolarSinusoidal',
    'natural earth1': 'naturalEarth1',
    'natural earth2': 'naturalEarth2',
    'nell hammer': 'nellHammer',
    'nicolosi': 'nicolosi',
    'patterson': 'patterson',
    // 'polyconic': 'polyconic',
    'rectangular polyconic': 'rectangularPolyconic',
    'satellite': 'satellite',
    // 'sinu mollweide': 'sinuMollweide',
    'times': 'times',
    // 'two point azimuthal': 'twoPointAzimuthal',
    // 'two point azimuthalUsa': 'twoPointAzimuthalUsa',
    // 'two point equidistant': 'twoPointEquidistant',
    // 'two point equidistantUsa': 'twoPointEquidistantUsa',
    'van der grinten': 'vanDerGrinten',
    'van der grinten2': 'vanDerGrinten2',
    'van der grinten3': 'vanDerGrinten3',
    'van der grinten4': 'vanDerGrinten4',
    // 'wagner': 'wagner',
    'wagner4': 'wagner4',
    'wagner6': 'wagner6',
    // 'wagner7': 'wagner7',
    'wiechel': 'wiechel',
    'winkel3': 'winkel3',

    // 'interrupt': 'interrupt',
    // 'interrupted homolosine': 'interruptedHomolosine',
    // 'interrupted sinusoidal': 'interruptedSinusoidal',
    // 'interrupted boggs': 'interruptedBoggs',
    // 'interrupted sinu mollweide': 'interruptedSinuMollweide',
    // 'interrupted mollweide': 'interruptedMollweide',
    // 'interrupted mollweide hemispheres': 'interruptedMollweideHemispheres',
    // 'interrupted quartic authalic': 'interruptedQuarticAuthalic',

    // 'polyhedral butterfly': 'polyhedralButterfly',
    // 'polyhedral collignon': 'polyhedralCollignon',
    // 'polyhedral waterman': 'polyhedralWaterman',

    'gringorten quincuncial': 'gringortenQuincuncial',
    'peirce quincuncial': 'peirceQuincuncial',
};

// name of the axes
exports.axesNames = ['lonaxis', 'lataxis'];

// max longitudinal angular span (EXPERIMENTAL)
exports.lonaxisSpan = {
    'satellite': 120,
    'orthographic': 180,
    'azimuthal equal area': 360,
    'azimuthal equidistant': 360,
    'conic conformal': 180,
    'gnomonic': 160,
    'stereographic': 180,
    'transverse mercator': 180,
    '*': 360
};

// max latitudinal angular span (EXPERIMENTAL)
exports.lataxisSpan = {
    'conic conformal': 150,
    'stereographic': 179.5,
    '*': 180
};

// defaults for each scope
exports.scopeDefaults = {
    world: {
        lonaxisRange: [-180, 180],
        lataxisRange: [-90, 90],
        projType: 'equirectangular',
        projRotate: [0, 0, 0]
    },
    usa: {
        lonaxisRange: [-180, -50],
        lataxisRange: [15, 80],
        projType: 'albers usa'
    },
    europe: {
        lonaxisRange: [-30, 60],
        lataxisRange: [30, 85],
        projType: 'conic conformal',
        projRotate: [15, 0, 0],
        projParallels: [0, 60]
    },
    asia: {
        lonaxisRange: [22, 160],
        lataxisRange: [-15, 55],
        projType: 'mercator',
        projRotate: [0, 0, 0]
    },
    africa: {
        lonaxisRange: [-30, 60],
        lataxisRange: [-40, 40],
        projType: 'mercator',
        projRotate: [0, 0, 0]
    },
    'north america': {
        lonaxisRange: [-180, -45],
        lataxisRange: [5, 85],
        projType: 'conic conformal',
        projRotate: [-100, 0, 0],
        projParallels: [29.5, 45.5]
    },
    'south america': {
        lonaxisRange: [-100, -30],
        lataxisRange: [-60, 15],
        projType: 'mercator',
        projRotate: [0, 0, 0]
    }
};

// angular pad to avoid rounding error around clip angles
exports.clipPad = 1e-3;

// map projection precision
exports.precision = 0.1;

// default land and water fill colors
exports.landColor = '#F0DC82';
exports.waterColor = '#3399FF';

// locationmode to layer name
exports.locationmodeToLayer = {
    'ISO-3': 'countries',
    'USA-states': 'subunits',
    'country names': 'countries'
};

// SVG element for a sphere (use to frame maps)
exports.sphereSVG = {type: 'Sphere'};

// N.B. base layer names must be the same as in the topojson files

// base layer with a fill color
exports.fillLayers = {
    ocean: 1,
    land: 1,
    lakes: 1
};

// base layer with a only a line color
exports.lineLayers = {
    subunits: 1,
    countries: 1,
    coastlines: 1,
    rivers: 1,
    frame: 1
};

exports.layers = [
    'bg',
    'ocean', 'land', 'lakes',
    'subunits', 'countries', 'coastlines', 'rivers',
    'lataxis', 'lonaxis', 'frame',
    'backplot',
    'frontplot'
];

exports.layersForChoropleth = [
    'bg',
    'ocean', 'land',
    'subunits', 'countries', 'coastlines',
    'lataxis', 'lonaxis', 'frame',
    'backplot',
    'rivers', 'lakes',
    'frontplot'
];

exports.layerNameToAdjective = {
    ocean: 'ocean',
    land: 'land',
    lakes: 'lake',
    subunits: 'subunit',
    countries: 'country',
    coastlines: 'coastline',
    rivers: 'river',
    frame: 'frame'
};