135 lines
4.3 KiB
JavaScript
135 lines
4.3 KiB
JavaScript
goog.provide('ol.test.proj.CH');
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goog.provide('ol.test.proj.EPSG2056');
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goog.provide('ol.test.proj.EPSG21781');
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describe('ol.proj.CH', function() {
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beforeEach(function() {
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ol.proj.CH.add();
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});
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it('has the correct constants', function() {
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expect(ol.proj.CH.ELLIPSOID.eSquared).to.roughlyEqual(
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0.006674372230614, 1e-13);
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expect(ol.proj.CH.R).to.roughlyEqual(6378815.90365, 1e-5);
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expect(ol.proj.CH.ALPHA).to.roughlyEqual(1.00072913843038, 1e-14);
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expect(ol.proj.CH.B0).to.roughlyEqual(
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goog.math.toRadians((3600 * 46 + 60 * 54 + 27.83324844) / 3600),
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1e-13);
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expect(ol.proj.CH.K).to.roughlyEqual(0.0030667323772751, 1e-13);
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});
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it('can transform from EPSG:2056 to EPSG:21781', function() {
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var output = ol.proj.transform(
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[2660389.515487, 1185731.630396], 'EPSG:2056', 'EPSG:21781');
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expect(output).to.be.an(Array);
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expect(output).to.have.length(2);
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expect(output[0]).to.roughlyEqual(660389.515487, 1e-9);
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expect(output[1]).to.roughlyEqual(185731.630396, 1e-9);
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});
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it('can transform from EPSG:21781 to EPSG:2056', function() {
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var output = ol.proj.transform(
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[660389.515487, 185731.630396], 'EPSG:21781', 'EPSG:2056');
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expect(output).to.be.an(Array);
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expect(output).to.have.length(2);
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expect(output[0]).to.roughlyEqual(2660389.515487, 1e-10);
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expect(output[1]).to.roughlyEqual(1185731.630396, 1e-10);
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});
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});
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describe('ol.proj.EPSG2056', function() {
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var epsg2056;
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beforeEach(function() {
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ol.proj.EPSG2056.add();
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epsg2056 = ol.proj.get('EPSG:2056');
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expect(epsg2056).to.be.an(ol.proj.Projection);
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});
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it('transforms from EPSG:2056 to EPSG:4326', function() {
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var wgs84 = ol.proj.transform(
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[2679520.05, 1212273.44], 'EPSG:2056', 'EPSG:4326');
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expect(wgs84).to.be.an(Array);
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expect(wgs84).to.have.length(2);
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expect(wgs84[0]).to.roughlyEqual(
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(3600 * 8 + 60 * 29 + 11.111272) / 3600, 1e-8);
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expect(wgs84[1]).to.roughlyEqual(
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(3600 * 47 + 60 * 3 + 28.956592) / 3600, 1e-8);
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});
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it('transforms from EPSG:4326 to EPSG:2056', function() {
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var lv95 = ol.proj.transform([
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(3600 * 8 + 60 * 29 + 11.11127154) / 3600,
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(3600 * 47 + 60 * 3 + 28.95659233) / 3600
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], 'EPSG:4326', 'EPSG:2056');
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expect(lv95).to.be.an(Array);
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expect(lv95).to.have.length(2);
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expect(lv95[0]).to.roughlyEqual(2679520.05, 1e-3);
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expect(lv95[1]).to.roughlyEqual(1212273.44, 1e-3);
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});
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});
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describe('ol.proj.EPSG21781', function() {
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var epsg21781;
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beforeEach(function() {
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ol.proj.EPSG21781.add();
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epsg21781 = ol.proj.get('EPSG:21781');
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expect(epsg21781).to.be.an(ol.proj.Projection);
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});
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it('maintains accuracy when round-tripping', function() {
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var extent = epsg21781.getExtent();
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var fromEPSG4326 = ol.proj.getTransform('EPSG:4326', 'EPSG:21781');
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var toEPSG4326 = ol.proj.getTransform('EPSG:21781', 'EPSG:4326');
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var roundTripped, x, y;
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for (x = extent[0]; x < extent[2]; x += 50000) {
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for (y = extent[1]; y < extent[3]; y += 50000) {
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roundTripped = fromEPSG4326(toEPSG4326([x, y]));
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expect(roundTripped).to.be.an(Array);
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expect(roundTripped).to.have.length(2);
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expect(roundTripped[0]).to.roughlyEqual(x, 1e-3);
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expect(roundTripped[1]).to.roughlyEqual(y, 1e-3);
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}
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}
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});
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it('transforms from EPSG:21781 to EPSG:4326', function() {
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var wgs84 = ol.proj.transform(
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[679520.05, 212273.44], 'EPSG:21781', 'EPSG:4326');
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expect(wgs84).to.be.an(Array);
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expect(wgs84).to.have.length(2);
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expect(wgs84[0]).to.roughlyEqual(
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(3600 * 8 + 60 * 29 + 11.111272) / 3600, 1e-8);
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expect(wgs84[1]).to.roughlyEqual(
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(3600 * 47 + 60 * 3 + 28.956592) / 3600, 1e-8);
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});
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it('transforms from EPSG:4326 to EPSG:21781', function() {
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var lv03 = ol.proj.transform([
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(3600 * 8 + 60 * 29 + 11.11127154) / 3600,
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(3600 * 47 + 60 * 3 + 28.95659233) / 3600
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], 'EPSG:4326', 'EPSG:21781');
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expect(lv03).to.be.an(Array);
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expect(lv03).to.have.length(2);
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expect(lv03[0]).to.roughlyEqual(679520.05, 1e-3);
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expect(lv03[1]).to.roughlyEqual(212273.44, 1e-3);
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});
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});
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goog.require('goog.math');
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goog.require('ol.proj');
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goog.require('ol.proj.CH');
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goog.require('ol.proj.EPSG2056');
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goog.require('ol.proj.EPSG21781');
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goog.require('ol.proj.Projection');
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