364 lines
12 KiB
JavaScript
364 lines
12 KiB
JavaScript
goog.provide('ol.test.Projection');
|
|
|
|
describe('ol.projection', function() {
|
|
|
|
beforeEach(function() {
|
|
sinon.spy(ol.projection, 'addTransform');
|
|
});
|
|
|
|
afterEach(function() {
|
|
var argsForCall = ol.projection.addTransform.args;
|
|
for (var i = 0, ii = argsForCall.length; i < ii; ++i) {
|
|
try {
|
|
ol.projection.removeTransform.apply(
|
|
ol.projection, argsForCall[i].splice(0, 2));
|
|
} catch (error) {
|
|
if (error instanceof goog.asserts.AssertionError) {
|
|
// The removeTransform function may have been called explicitly by the
|
|
// tests, so we pass.
|
|
} else {
|
|
throw error;
|
|
}
|
|
}
|
|
}
|
|
ol.projection.addTransform.restore();
|
|
});
|
|
|
|
describe('projection equivalence', function() {
|
|
|
|
function _testAllEquivalent(codes) {
|
|
var projections = goog.array.map(codes, ol.projection.get);
|
|
goog.array.forEach(projections, function(source) {
|
|
goog.array.forEach(projections, function(destination) {
|
|
expect(ol.projection.equivalent(source, destination)).to.be.ok();
|
|
});
|
|
});
|
|
}
|
|
|
|
it('gives that 3857, 102100, 102113, 900913 are equivalent ', function() {
|
|
_testAllEquivalent([
|
|
'EPSG:3857',
|
|
'EPSG:102100',
|
|
'EPSG:102113',
|
|
'EPSG:900913'
|
|
]);
|
|
});
|
|
|
|
it('gives that CRS:84, urn:ogc:def:crs:EPSG:6.6:4326, EPSG:4326 are ' +
|
|
'equivalent', function() {
|
|
_testAllEquivalent([
|
|
'CRS:84',
|
|
'urn:ogc:def:crs:EPSG:6.6:4326',
|
|
'EPSG:4326'
|
|
]);
|
|
});
|
|
});
|
|
|
|
describe('identify transform', function() {
|
|
|
|
it('returns a new object, with same coord values', function() {
|
|
var epsg4326 = ol.projection.get('EPSG:4326');
|
|
var uniqueObject = {};
|
|
var sourcePoint = [uniqueObject, uniqueObject];
|
|
var destinationPoint = ol.projection.transform(
|
|
sourcePoint, epsg4326, epsg4326);
|
|
expect(sourcePoint === destinationPoint).to.not.be();
|
|
expect(destinationPoint[0] === sourcePoint[0]).to.be.ok();
|
|
expect(destinationPoint[1] === sourcePoint[1]).to.be.ok();
|
|
});
|
|
});
|
|
|
|
describe('transform 0,0 from 4326 to 3857', function() {
|
|
|
|
it('returns expected value', function() {
|
|
var point = ol.projection.transform(
|
|
[0, 0], 'EPSG:4326', 'EPSG:3857');
|
|
expect(point).not.to.be(undefined);
|
|
expect(point).not.to.be(null);
|
|
expect(point[1]).to.roughlyEqual(0, 1e-9);
|
|
});
|
|
});
|
|
|
|
describe('transform 0,0 from 3857 to 4326', function() {
|
|
|
|
it('returns expected value', function() {
|
|
var point = ol.projection.transform(
|
|
[0, 0], 'EPSG:3857', 'EPSG:4326');
|
|
expect(point).not.to.be(undefined);
|
|
expect(point).not.to.be(null);
|
|
expect(point[0]).to.eql(0);
|
|
expect(point[1]).to.eql(0);
|
|
});
|
|
});
|
|
|
|
describe('transform from 4326 to 3857 (Alastaira)', function() {
|
|
// http://alastaira.wordpress.com/2011/01/23/the-google-maps-bing-maps-spherical-mercator-projection/
|
|
|
|
it('returns expected value', function() {
|
|
var point = ol.projection.transform(
|
|
[-5.625, 52.4827802220782],
|
|
'EPSG:4326',
|
|
'EPSG:900913');
|
|
expect(point).not.to.be(undefined);
|
|
expect(point).not.to.be(null);
|
|
expect(point[0]).to.roughlyEqual(-626172.13571216376, 1e-9);
|
|
expect(point[1]).to.roughlyEqual(6887893.4928337997, 1e-8);
|
|
});
|
|
});
|
|
|
|
describe('transform from 3857 to 4326 (Alastaira)', function() {
|
|
// http://alastaira.wordpress.com/2011/01/23/the-google-maps-bing-maps-spherical-mercator-projection/
|
|
|
|
it('returns expected value', function() {
|
|
var point = ol.projection.transform(
|
|
[-626172.13571216376, 6887893.4928337997],
|
|
'EPSG:900913',
|
|
'EPSG:4326');
|
|
expect(point).not.to.be(undefined);
|
|
expect(point).not.to.be(null);
|
|
expect(point[0]).to.roughlyEqual(-5.625, 1e-9);
|
|
expect(point[1]).to.roughlyEqual(52.4827802220782, 1e-9);
|
|
});
|
|
});
|
|
|
|
describe('Proj4js integration', function() {
|
|
|
|
it('allows Proj4js projections to be used transparently', function() {
|
|
var point = ol.projection.transform(
|
|
[-626172.13571216376, 6887893.4928337997],
|
|
'GOOGLE',
|
|
'WGS84');
|
|
expect(point[0]).to.roughlyEqual(-5.625, 1e-9);
|
|
expect(point[1]).to.roughlyEqual(52.4827802220782, 1e-9);
|
|
});
|
|
|
|
it('allows new Proj4js projections to be defined', function() {
|
|
Proj4js.defs['EPSG:21781'] =
|
|
'+proj=somerc +lat_0=46.95240555555556 +lon_0=7.439583333333333 ' +
|
|
'+k_0=1 +x_0=600000 +y_0=200000 +ellps=bessel ' +
|
|
'+towgs84=674.374,15.056,405.346,0,0,0,0 +units=m +no_defs';
|
|
var point = ol.projection.transform(
|
|
[7.439583333333333, 46.95240555555556],
|
|
'EPSG:4326',
|
|
'EPSG:21781');
|
|
expect(point[0]).to.roughlyEqual(600072.300, 1);
|
|
expect(point[1]).to.roughlyEqual(200146.976, 1);
|
|
});
|
|
|
|
it('caches the new Proj4js projections given their srsCode', function() {
|
|
Proj4js.defs['EPSG:21781'] =
|
|
'+proj=somerc +lat_0=46.95240555555556 +lon_0=7.439583333333333 ' +
|
|
'+k_0=1 +x_0=600000 +y_0=200000 +ellps=bessel ' +
|
|
'+towgs84=674.374,15.056,405.346,0,0,0,0 +units=m +no_defs';
|
|
var code = 'urn:ogc:def:crs:EPSG:21781';
|
|
var srsCode = 'EPSG:21781';
|
|
var proj = ol.projection.get(code);
|
|
expect(ol.projection.proj4jsProjections_.hasOwnProperty(code))
|
|
.to.be.ok();
|
|
expect(ol.projection.proj4jsProjections_.hasOwnProperty(srsCode))
|
|
.to.be.ok();
|
|
var proj2 = ol.projection.get(srsCode);
|
|
expect(proj2).to.be(proj);
|
|
});
|
|
|
|
it('numerically estimates point scale at the equator', function() {
|
|
var googleProjection = ol.projection.get('GOOGLE');
|
|
expect(googleProjection.getPointResolution(1, [0, 0])).
|
|
to.roughlyEqual(1, 1e-1);
|
|
});
|
|
|
|
it('numerically estimates point scale at various latitudes', function() {
|
|
var epsg3857Projection = ol.projection.get('EPSG:3857');
|
|
var googleProjection = ol.projection.get('GOOGLE');
|
|
var point, y;
|
|
for (y = -20; y <= 20; ++y) {
|
|
point = [0, 1000000 * y];
|
|
expect(googleProjection.getPointResolution(1, point)).to.roughlyEqual(
|
|
epsg3857Projection.getPointResolution(1, point), 1e-1);
|
|
}
|
|
});
|
|
|
|
it('numerically estimates point scale at various points', function() {
|
|
var epsg3857Projection = ol.projection.get('EPSG:3857');
|
|
var googleProjection = ol.projection.get('GOOGLE');
|
|
var point, x, y;
|
|
for (x = -20; x <= 20; ++x) {
|
|
for (y = -20; y <= 20; ++y) {
|
|
point = [1000000 * x, 1000000 * y];
|
|
expect(googleProjection.getPointResolution(1, point)).to.roughlyEqual(
|
|
epsg3857Projection.getPointResolution(1, point), 1e-1);
|
|
}
|
|
}
|
|
});
|
|
|
|
});
|
|
|
|
describe('ol.projection.getTransformFromProjections()', function() {
|
|
|
|
var sm = ol.projection.get('GOOGLE');
|
|
var gg = ol.projection.get('EPSG:4326');
|
|
|
|
it('returns a transform function', function() {
|
|
var transform = ol.projection.getTransformFromProjections(sm, gg);
|
|
expect(typeof transform).to.be('function');
|
|
|
|
var output = transform([-12000000, 5000000]);
|
|
|
|
expect(output[0]).to.roughlyEqual(-107.79783409434258, 1e-9);
|
|
expect(output[1]).to.roughlyEqual(40.91627447067577, 1e-9);
|
|
});
|
|
|
|
it('works for longer arrays', function() {
|
|
var transform = ol.projection.getTransformFromProjections(sm, gg);
|
|
expect(typeof transform).to.be('function');
|
|
|
|
var output = transform([-12000000, 5000000, -12000000, 5000000]);
|
|
|
|
expect(output[0]).to.roughlyEqual(-107.79783409434258, 1e-9);
|
|
expect(output[1]).to.roughlyEqual(40.91627447067577, 1e-9);
|
|
expect(output[2]).to.roughlyEqual(-107.79783409434258, 1e-9);
|
|
expect(output[3]).to.roughlyEqual(40.91627447067577, 1e-9);
|
|
});
|
|
|
|
});
|
|
|
|
describe('ol.projection.getTransform()', function() {
|
|
|
|
it('returns a function', function() {
|
|
var transform = ol.projection.getTransform('GOOGLE', 'EPSG:4326');
|
|
expect(typeof transform).to.be('function');
|
|
});
|
|
|
|
it('returns a transform function', function() {
|
|
var transform = ol.projection.getTransform('GOOGLE', 'EPSG:4326');
|
|
expect(typeof transform).to.be('function');
|
|
|
|
var output = transform([-626172.13571216376, 6887893.4928337997]);
|
|
|
|
expect(output[0]).to.roughlyEqual(-5.625, 1e-9);
|
|
expect(output[1]).to.roughlyEqual(52.4827802220782, 1e-9);
|
|
|
|
});
|
|
|
|
it('works for longer arrays of coordinate values', function() {
|
|
var transform = ol.projection.getTransform('GOOGLE', 'EPSG:4326');
|
|
expect(typeof transform).to.be('function');
|
|
|
|
var output = transform([
|
|
-626172.13571216376, 6887893.4928337997,
|
|
-12000000, 5000000,
|
|
-626172.13571216376, 6887893.4928337997
|
|
]);
|
|
|
|
expect(output[0]).to.roughlyEqual(-5.625, 1e-9);
|
|
expect(output[1]).to.roughlyEqual(52.4827802220782, 1e-9);
|
|
expect(output[2]).to.roughlyEqual(-107.79783409434258, 1e-9);
|
|
expect(output[3]).to.roughlyEqual(40.91627447067577, 1e-9);
|
|
expect(output[4]).to.roughlyEqual(-5.625, 1e-9);
|
|
expect(output[5]).to.roughlyEqual(52.4827802220782, 1e-9);
|
|
});
|
|
|
|
it('accepts an optional destination array', function() {
|
|
var transform = ol.projection.getTransform('EPSG:3857', 'EPSG:4326');
|
|
var input = [-12000000, 5000000];
|
|
var output = [];
|
|
|
|
var got = transform(input, output);
|
|
expect(got).to.be(output);
|
|
|
|
expect(output[0]).to.roughlyEqual(-107.79783409434258, 1e-9);
|
|
expect(output[1]).to.roughlyEqual(40.91627447067577, 1e-9);
|
|
|
|
expect(input).to.eql([-12000000, 5000000]);
|
|
});
|
|
|
|
it('accepts a dimension', function() {
|
|
var transform = ol.projection.getTransform('GOOGLE', 'EPSG:4326');
|
|
expect(typeof transform).to.be('function');
|
|
|
|
var dimension = 3;
|
|
var output = transform([
|
|
-626172.13571216376, 6887893.4928337997, 100,
|
|
-12000000, 5000000, 200,
|
|
-626172.13571216376, 6887893.4928337997, 300
|
|
], undefined, dimension);
|
|
|
|
expect(output[0]).to.roughlyEqual(-5.625, 1e-9);
|
|
expect(output[1]).to.roughlyEqual(52.4827802220782, 1e-9);
|
|
expect(output[2]).to.be(100);
|
|
expect(output[3]).to.roughlyEqual(-107.79783409434258, 1e-9);
|
|
expect(output[4]).to.roughlyEqual(40.91627447067577, 1e-9);
|
|
expect(output[5]).to.be(200);
|
|
expect(output[6]).to.roughlyEqual(-5.625, 1e-9);
|
|
expect(output[7]).to.roughlyEqual(52.4827802220782, 1e-9);
|
|
expect(output[8]).to.be(300);
|
|
});
|
|
});
|
|
|
|
describe('ol.projection.removeTransform()', function() {
|
|
|
|
var extent = new ol.Extent(-180, -90, 180, 90);
|
|
var units = ol.ProjectionUnits.DEGREES;
|
|
|
|
it('removes functions cached by addTransform', function() {
|
|
var foo = new ol.Projection({
|
|
code: 'foo',
|
|
units: units,
|
|
extent: extent
|
|
});
|
|
var bar = new ol.Projection({
|
|
code: 'bar',
|
|
units: units,
|
|
extent: extent
|
|
});
|
|
var transform = function(input, output, dimension) {return input};
|
|
ol.projection.addTransform(foo, bar, transform);
|
|
expect(ol.projection.transforms_).not.to.be(undefined);
|
|
expect(ol.projection.transforms_.foo).not.to.be(undefined);
|
|
expect(ol.projection.transforms_.foo.bar).to.be(transform);
|
|
|
|
var removed = ol.projection.removeTransform(foo, bar);
|
|
expect(removed).to.be(transform);
|
|
expect(ol.projection.transforms_.foo).to.be(undefined);
|
|
});
|
|
|
|
});
|
|
|
|
describe('ol.Projection.prototype.getMetersPerUnit()', function() {
|
|
|
|
it('returns value in meters', function() {
|
|
var epsg4326 = ol.projection.get('EPSG:4326');
|
|
expect(epsg4326.getMetersPerUnit()).to.eql(111194.87428468118);
|
|
});
|
|
|
|
});
|
|
|
|
describe('ol.projection.configureProj4jsProjection()', function() {
|
|
|
|
beforeEach(function() {
|
|
ol.projection.proj4jsProjections_ = {};
|
|
});
|
|
|
|
it('returns a configured projection', function() {
|
|
var extent = new ol.Extent(
|
|
485869.5728, 76443.1884, 837076.5648, 299941.7864);
|
|
var epsg21781 = ol.projection.configureProj4jsProjection({
|
|
code: 'EPSG:21781',
|
|
extent: extent
|
|
});
|
|
expect(epsg21781.getCode()).to.eql('EPSG:21781');
|
|
expect(epsg21781.getExtent()).to.be(extent);
|
|
expect(epsg21781.getUnits()).to.be(ol.ProjectionUnits.METERS);
|
|
expect(epsg21781.isGlobal()).to.not.be();
|
|
});
|
|
|
|
});
|
|
|
|
});
|
|
|
|
goog.require('goog.array');
|
|
goog.require('ol.Extent');
|
|
goog.require('ol.Projection');
|
|
goog.require('ol.ProjectionUnits');
|
|
goog.require('ol.projection');
|