111 lines
2.4 KiB
JavaScript
111 lines
2.4 KiB
JavaScript
// See http://www.movable-type.co.uk/scripts/latlong.html
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// FIXME add tests for offset
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goog.provide('ol.test.Sphere');
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describe('ol.Sphere', function() {
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var sphere = new ol.Sphere(6371);
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var expected = [{
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c1: [0, 0],
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c2: [0, 0],
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haversineDistance: 0
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}, {
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c1: [0, 0],
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c2: [45, 45],
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haversineDistance: 6671.695598673525
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}, {
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c1: [0, 0],
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c2: [-45, 45],
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haversineDistance: 6671.695598673525
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}, {
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c1: [0, 0],
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c2: [-45, -45],
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haversineDistance: 6671.695598673525
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}, {
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c1: [0, 0],
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c2: [45, -45],
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haversineDistance: 6671.695598673525
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}, {
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c1: [45, 45],
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c2: [45, 45],
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haversineDistance: 0
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}, {
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c1: [45, 45],
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c2: [-45, 45],
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haversineDistance: 6671.695598673525
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}, {
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c1: [45, 45],
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c2: [-45, -45],
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haversineDistance: 13343.391197347048
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}, {
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c1: [45, 45],
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c2: [45, -45],
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haversineDistance: 10007.543398010286
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}, {
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c1: [-45, 45],
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c2: [-45, 45],
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haversineDistance: 0
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}, {
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c1: [-45, 45],
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c2: [-45, -45],
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haversineDistance: 10007.543398010286
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}, {
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c1: [-45, 45],
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c2: [45, -45],
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haversineDistance: 13343.391197347048
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}, {
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c1: [-45, -45],
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c2: [-45, -45],
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haversineDistance: 0
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}, {
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c1: [-45, -45],
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c2: [45, -45],
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haversineDistance: 6671.695598673525
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}, {
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c1: [45, -45],
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c2: [45, -45],
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haversineDistance: 0
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}];
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describe('haversineDistance', function() {
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it('results match Chris Veness\'s reference implementation', function() {
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var e, i;
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for (i = 0; i < expected.length; ++i) {
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e = expected[i];
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expect(sphere.haversineDistance(e.c1, e.c2)).to.roughlyEqual(
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e.haversineDistance, 1e-9);
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}
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});
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});
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describe('Vincenty area', function() {
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var geometry;
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before(function(done) {
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afterLoadText('spec/ol/format/wkt/illinois.wkt', function(wkt) {
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try {
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var format = new ol.format.WKT();
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geometry = format.readGeometry(wkt);
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} catch (e) {
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done(e);
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}
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done();
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});
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});
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it('results match the expected area of Ilinois', function() {
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var coords = geometry.getPolygon(0).getLinearRing(0).getCoordinates();
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expect(ol.sphere.WGS84.geodesicArea(coords)).to.equal(145978332359.37125);
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});
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});
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});
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goog.require('ol.Sphere');
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goog.require('ol.sphere.WGS84');
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goog.require('ol.format.WKT');
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