870 lines
29 KiB
JavaScript
870 lines
29 KiB
JavaScript
import Projection from '../../../src/ol/proj/Projection.js';
|
|
import Units from '../../../src/ol/proj/Units.js';
|
|
import {HALF_SIZE} from '../../../src/ol/proj/epsg3857.js';
|
|
import {
|
|
METERS_PER_UNIT,
|
|
addCommon,
|
|
clearAllProjections,
|
|
clearUserProjection,
|
|
equivalent,
|
|
fromLonLat,
|
|
fromUserCoordinate,
|
|
fromUserExtent,
|
|
getPointResolution,
|
|
get as getProjection,
|
|
getTransform,
|
|
getTransformFromProjections,
|
|
getUserProjection,
|
|
setUserProjection,
|
|
toLonLat,
|
|
toUserCoordinate,
|
|
toUserExtent,
|
|
transform,
|
|
transformExtent,
|
|
useGeographic,
|
|
} from '../../../src/ol/proj.js';
|
|
import {METERS_PER_UNIT as metersPerDegree} from '../../../src/ol/proj/epsg4326.js';
|
|
import {register} from '../../../src/ol/proj/proj4.js';
|
|
|
|
describe('ol.proj', function () {
|
|
afterEach(function () {
|
|
clearAllProjections();
|
|
clearUserProjection();
|
|
addCommon();
|
|
});
|
|
|
|
describe('useGeographic()', function () {
|
|
it('sets the user projection to Geographic/WGS-84', function () {
|
|
useGeographic();
|
|
const projection = getUserProjection();
|
|
expect(projection).to.be(getProjection('EPSG:4326'));
|
|
});
|
|
});
|
|
|
|
describe('getUserProjection()', function () {
|
|
it('returns null by default', function () {
|
|
expect(getUserProjection()).to.be(null);
|
|
});
|
|
|
|
it('returns the user projection if set', function () {
|
|
const projection = getProjection('EPSG:4326');
|
|
setUserProjection(projection);
|
|
expect(getUserProjection()).to.be(projection);
|
|
});
|
|
});
|
|
|
|
describe('setUserProjection()', function () {
|
|
it('accepts a string identifier', function () {
|
|
const projection = getProjection('EPSG:4326');
|
|
setUserProjection('EPSG:4326');
|
|
expect(getUserProjection()).to.be(projection);
|
|
});
|
|
});
|
|
|
|
describe('clearUserProjection()', function () {
|
|
it('clears the user projection', function () {
|
|
useGeographic();
|
|
clearUserProjection();
|
|
expect(getUserProjection()).to.be(null);
|
|
});
|
|
});
|
|
|
|
describe('toUserCoordinate()', function () {
|
|
it('transforms a point to the user projection', function () {
|
|
useGeographic();
|
|
const coordinate = fromLonLat([-110, 45]);
|
|
const user = toUserCoordinate(coordinate, 'EPSG:3857');
|
|
const transformed = transform(coordinate, 'EPSG:3857', 'EPSG:4326');
|
|
expect(user).to.eql(transformed);
|
|
expect(user).not.to.eql(coordinate);
|
|
});
|
|
|
|
it('returns the original if no user projection is set', function () {
|
|
const coordinate = fromLonLat([-110, 45]);
|
|
const user = toUserCoordinate(coordinate, 'EPSG:3857');
|
|
expect(user).to.be(coordinate);
|
|
});
|
|
});
|
|
|
|
describe('fromUserCoordinate()', function () {
|
|
it('transforms a point from the user projection', function () {
|
|
useGeographic();
|
|
const user = [-110, 45];
|
|
const coordinate = fromUserCoordinate(user, 'EPSG:3857');
|
|
const transformed = transform(user, 'EPSG:4326', 'EPSG:3857');
|
|
expect(coordinate).to.eql(transformed);
|
|
expect(user).not.to.eql(coordinate);
|
|
});
|
|
|
|
it('returns the original if no user projection is set', function () {
|
|
const user = fromLonLat([-110, 45]);
|
|
const coordinate = fromUserCoordinate(user, 'EPSG:3857');
|
|
expect(coordinate).to.be(user);
|
|
});
|
|
});
|
|
|
|
describe('toUserExtent()', function () {
|
|
it('transforms an extent to the user projection', function () {
|
|
useGeographic();
|
|
const extent = transformExtent(
|
|
[-110, 45, -100, 50],
|
|
'EPSG:4326',
|
|
'EPSG:3857'
|
|
);
|
|
const user = toUserExtent(extent, 'EPSG:3857');
|
|
const transformed = transformExtent(extent, 'EPSG:3857', 'EPSG:4326');
|
|
expect(user).to.eql(transformed);
|
|
expect(user).not.to.eql(extent);
|
|
});
|
|
|
|
it('returns the original if no user projection is set', function () {
|
|
const extent = transformExtent(
|
|
[-110, 45, -100, 50],
|
|
'EPSG:4326',
|
|
'EPSG:3857'
|
|
);
|
|
const user = toUserExtent(extent, 'EPSG:3857');
|
|
expect(user).to.be(extent);
|
|
});
|
|
});
|
|
|
|
describe('fromUserExtent()', function () {
|
|
it('transforms an extent from the user projection', function () {
|
|
useGeographic();
|
|
const user = [-110, 45, -100, 50];
|
|
const extent = fromUserExtent(user, 'EPSG:3857');
|
|
const transformed = transformExtent(user, 'EPSG:4326', 'EPSG:3857');
|
|
expect(extent).to.eql(transformed);
|
|
expect(extent).not.to.eql(user);
|
|
});
|
|
|
|
it('returns the original if no user projection is set', function () {
|
|
const user = transformExtent(
|
|
[-110, 45, -100, 50],
|
|
'EPSG:4326',
|
|
'EPSG:3857'
|
|
);
|
|
const extent = fromUserExtent(user, 'EPSG:3857');
|
|
expect(extent).to.be(user);
|
|
});
|
|
});
|
|
|
|
describe('toLonLat()', function () {
|
|
const cases = [
|
|
{
|
|
from: [0, 0],
|
|
to: [0, 0],
|
|
},
|
|
{
|
|
from: [-12356463.478053365, 5700582.732404122],
|
|
to: [-111, 45.5],
|
|
},
|
|
{
|
|
from: [2 * HALF_SIZE - 12356463.478053365, 5700582.732404122],
|
|
to: [-111, 45.5],
|
|
},
|
|
{
|
|
from: [-4 * HALF_SIZE - 12356463.478053365, 5700582.732404122],
|
|
to: [-111, 45.5],
|
|
},
|
|
];
|
|
|
|
cases.forEach(function (c) {
|
|
it('works for ' + c.from.join(', '), function () {
|
|
const lonLat = toLonLat(c.from);
|
|
expect(lonLat[0]).to.roughlyEqual(c.to[0], 1e-9);
|
|
expect(lonLat[1]).to.roughlyEqual(c.to[1], 1e-9);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('projection equivalence', function () {
|
|
function _testAllEquivalent(codes) {
|
|
const projections = codes.map(getProjection);
|
|
projections.forEach(function (source) {
|
|
projections.forEach(function (destination) {
|
|
expect(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 custom 3413 is equivalent to self', function () {
|
|
const code = 'EPSG:3413';
|
|
|
|
const source = new Projection({
|
|
code: code,
|
|
});
|
|
|
|
const destination = new Projection({
|
|
code: code,
|
|
});
|
|
|
|
expect(equivalent(source, destination)).to.be.ok();
|
|
});
|
|
|
|
it('gives that default 3857 is equivalent to self', function () {
|
|
_testAllEquivalent(['EPSG:3857', 'EPSG:3857']);
|
|
});
|
|
|
|
it(
|
|
'gives that CRS:84, urn:ogc:def:crs:EPSG:6.6:4326, EPSG:4326, ' +
|
|
'urn:x-ogc:def:crs:EPSG:6.6:4326 are equivalent',
|
|
function () {
|
|
_testAllEquivalent([
|
|
'CRS:84',
|
|
'urn:ogc:def:crs:EPSG:6.6:4326',
|
|
'urn:x-ogc:def:crs:EPSG:6.6:4326',
|
|
'EPSG:4326',
|
|
]);
|
|
}
|
|
);
|
|
|
|
it('requires code and units to be equal for projection evquivalence', function () {
|
|
const proj1 = new Projection({
|
|
code: 'EPSG:3857',
|
|
units: 'm',
|
|
});
|
|
const proj2 = new Projection({
|
|
code: 'EPSG:3857',
|
|
units: 'tile-pixels',
|
|
});
|
|
expect(equivalent(proj1, proj2)).to.not.be.ok();
|
|
});
|
|
});
|
|
|
|
describe('identify transform', function () {
|
|
it('returns a new object, with same coord values', function () {
|
|
const epsg4326 = getProjection('EPSG:4326');
|
|
const uniqueObject = {};
|
|
const sourcePoint = [uniqueObject, uniqueObject];
|
|
const destinationPoint = 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 () {
|
|
const point = 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 () {
|
|
const point = 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 () {
|
|
// https://alastaira.wordpress.com/2011/01/23/the-google-maps-bing-maps-spherical-mercator-projection/
|
|
|
|
it('returns expected value using ol.proj.transform', function () {
|
|
const point = 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);
|
|
});
|
|
|
|
it('returns expected value using ol.proj.fromLonLat', function () {
|
|
const point = fromLonLat([-5.625, 52.4827802220782]);
|
|
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 () {
|
|
// https://alastaira.wordpress.com/2011/01/23/the-google-maps-bing-maps-spherical-mercator-projection/
|
|
|
|
it('returns expected value using ol.proj.transform', function () {
|
|
const point = 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);
|
|
});
|
|
|
|
it('returns expected value using ol.proj.toLonLat', function () {
|
|
const point = toLonLat([-626172.13571216376, 6887893.4928337997]);
|
|
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('canWrapX()', function () {
|
|
it('requires an extent for allowing wrapX', function () {
|
|
let proj = new Projection({
|
|
code: 'foo',
|
|
global: true,
|
|
});
|
|
expect(proj.canWrapX()).to.be(false);
|
|
proj.setExtent([1, 2, 3, 4]);
|
|
expect(proj.canWrapX()).to.be(true);
|
|
proj = new Projection({
|
|
code: 'foo',
|
|
global: true,
|
|
extent: [1, 2, 3, 4],
|
|
});
|
|
expect(proj.canWrapX()).to.be(true);
|
|
proj.setExtent(null);
|
|
expect(proj.canWrapX()).to.be(false);
|
|
});
|
|
|
|
it('requires global to be true for allowing wrapX', function () {
|
|
let proj = new Projection({
|
|
code: 'foo',
|
|
extent: [1, 2, 3, 4],
|
|
});
|
|
expect(proj.canWrapX()).to.be(false);
|
|
proj.setGlobal(true);
|
|
expect(proj.canWrapX()).to.be(true);
|
|
proj = new Projection({
|
|
code: 'foo',
|
|
global: true,
|
|
extent: [1, 2, 3, 4],
|
|
});
|
|
expect(proj.canWrapX()).to.be(true);
|
|
proj.setGlobal(false);
|
|
expect(proj.canWrapX()).to.be(false);
|
|
});
|
|
});
|
|
|
|
describe('transformExtent()', function () {
|
|
it('transforms an extent given projection identifiers', function () {
|
|
const sourceExtent = [-15, -30, 45, 60];
|
|
const destinationExtent = transformExtent(
|
|
sourceExtent,
|
|
'EPSG:4326',
|
|
'EPSG:3857'
|
|
);
|
|
expect(destinationExtent).not.to.be(undefined);
|
|
expect(destinationExtent).not.to.be(null);
|
|
expect(destinationExtent[0]).to.roughlyEqual(-1669792.3618991037, 1e-9);
|
|
expect(destinationExtent[2]).to.roughlyEqual(5009377.085697311, 1e-9);
|
|
expect(destinationExtent[1]).to.roughlyEqual(-3503549.843504376, 1e-8);
|
|
expect(destinationExtent[3]).to.roughlyEqual(8399737.889818361, 1e-8);
|
|
});
|
|
});
|
|
|
|
describe('getPointResolution()', function () {
|
|
it('returns the correct point resolution for EPSG:4326', function () {
|
|
let pointResolution = getPointResolution('EPSG:4326', 1, [0, 0]);
|
|
expect(pointResolution).to.be(1);
|
|
pointResolution = getPointResolution('EPSG:4326', 1, [0, 52]);
|
|
expect(pointResolution).to.be(1);
|
|
});
|
|
it('returns the correct point resolution for EPSG:4326 with custom units', function () {
|
|
let pointResolution = getPointResolution('EPSG:4326', 1, [0, 0], 'm');
|
|
expect(pointResolution).to.roughlyEqual(111195.0802335329, 1e-5);
|
|
pointResolution = getPointResolution('EPSG:4326', 1, [0, 52], 'm');
|
|
expect(pointResolution).to.roughlyEqual(89826.53390979706, 1e-5);
|
|
});
|
|
it('returns the correct point resolution for EPSG:3857', function () {
|
|
let pointResolution = getPointResolution('EPSG:3857', 1, [0, 0]);
|
|
expect(pointResolution).to.be(1);
|
|
pointResolution = getPointResolution('EPSG:3857', 1, fromLonLat([0, 52]));
|
|
expect(pointResolution).to.roughlyEqual(0.615661, 1e-5);
|
|
});
|
|
it('returns the correct point resolution for EPSG:3857 with custom units', function () {
|
|
let pointResolution = getPointResolution(
|
|
'EPSG:3857',
|
|
METERS_PER_UNIT['degrees'],
|
|
[0, 0],
|
|
'degrees'
|
|
);
|
|
expect(pointResolution).to.be(1);
|
|
pointResolution = getPointResolution(
|
|
'EPSG:4326',
|
|
1,
|
|
fromLonLat([0, 52]),
|
|
'degrees'
|
|
);
|
|
expect(pointResolution).to.be(1);
|
|
});
|
|
it('returns the nominal resolution for projections without transforms', function () {
|
|
const projection = new Projection({
|
|
code: 'foo',
|
|
units: 'ft',
|
|
});
|
|
let pointResolution = getPointResolution(projection, 2, [0, 0]);
|
|
expect(pointResolution).to.be(2);
|
|
pointResolution = getPointResolution(projection, 2, [0, 0], 'm');
|
|
expect(pointResolution).to.be(0.6096);
|
|
});
|
|
});
|
|
|
|
describe('Proj4js integration', function () {
|
|
afterEach(function () {
|
|
delete proj4.defs['EPSG:21781'];
|
|
clearAllProjections();
|
|
addCommon();
|
|
});
|
|
|
|
it('creates ol.proj.Projection instance from EPSG:21781', function () {
|
|
proj4.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'
|
|
);
|
|
register(proj4);
|
|
const proj = getProjection('EPSG:21781');
|
|
expect(proj.getCode()).to.eql('EPSG:21781');
|
|
expect(proj.getUnits()).to.eql('m');
|
|
expect(proj.getMetersPerUnit()).to.eql(1);
|
|
});
|
|
|
|
it('creates ol.proj.Projection instance from EPSG:3739', function () {
|
|
proj4.defs(
|
|
'EPSG:3739',
|
|
'+proj=tmerc +lat_0=40.5 +lon_0=-110.0833333333333 +k=0.9999375 ' +
|
|
'+x_0=800000.0000101599 +y_0=99999.99998983997 +ellps=GRS80 ' +
|
|
'+towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defs'
|
|
);
|
|
register(proj4);
|
|
const proj = getProjection('EPSG:3739');
|
|
expect(proj.getCode()).to.eql('EPSG:3739');
|
|
expect(proj.getUnits()).to.eql('us-ft');
|
|
expect(proj.getMetersPerUnit()).to.eql(1200 / 3937);
|
|
|
|
delete proj4.defs['EPSG:3739'];
|
|
});
|
|
|
|
it('creates ol.proj.Projection instance from EPSG:4258', function () {
|
|
proj4.defs(
|
|
'EPSG:4258',
|
|
'+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs'
|
|
);
|
|
register(proj4);
|
|
const proj = getProjection('EPSG:4258');
|
|
expect(proj.getCode()).to.eql('EPSG:4258');
|
|
expect(proj.getUnits()).to.eql('degrees');
|
|
expect(proj.getMetersPerUnit()).to.eql(METERS_PER_UNIT[Units.DEGREES]);
|
|
|
|
delete proj4.defs['EPSG:4258'];
|
|
});
|
|
|
|
it('allows Proj4js projections to be used transparently', function () {
|
|
register(proj4);
|
|
const point = 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 () {
|
|
proj4.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'
|
|
);
|
|
register(proj4);
|
|
const point = transform(
|
|
[7.439583333333333, 46.95240555555556],
|
|
'EPSG:4326',
|
|
'EPSG:21781'
|
|
);
|
|
expect(point[0]).to.roughlyEqual(600072.3, 1);
|
|
expect(point[1]).to.roughlyEqual(200146.976, 1);
|
|
});
|
|
|
|
it('works with ol.proj.fromLonLat and ol.proj.toLonLat', function () {
|
|
proj4.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'
|
|
);
|
|
register(proj4);
|
|
const lonLat = [7.439583333333333, 46.95240555555556];
|
|
let point = fromLonLat(lonLat, 'EPSG:21781');
|
|
expect(point[0]).to.roughlyEqual(600072.3, 1);
|
|
expect(point[1]).to.roughlyEqual(200146.976, 1);
|
|
point = toLonLat(point, 'EPSG:21781');
|
|
expect(point[0]).to.roughlyEqual(lonLat[0], 1);
|
|
expect(point[1]).to.roughlyEqual(lonLat[1], 1);
|
|
});
|
|
|
|
it('caches the new Proj4js projections given their srsCode', function () {
|
|
proj4.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'
|
|
);
|
|
const code = 'urn:ogc:def:crs:EPSG:21781';
|
|
const srsCode = 'EPSG:21781';
|
|
proj4.defs(code, proj4.defs(srsCode));
|
|
register(proj4);
|
|
const proj = getProjection(code);
|
|
const proj2 = getProjection(srsCode);
|
|
expect(equivalent(proj2, proj)).to.be(true);
|
|
delete proj4.defs[code];
|
|
});
|
|
|
|
it('numerically estimates point scale at the equator', function () {
|
|
register(proj4);
|
|
const googleProjection = getProjection('GOOGLE');
|
|
expect(getPointResolution(googleProjection, 1, [0, 0])).to.roughlyEqual(
|
|
1,
|
|
1e-1
|
|
);
|
|
});
|
|
|
|
it('numerically estimates point scale at various latitudes', function () {
|
|
register(proj4);
|
|
const epsg3857Projection = getProjection('EPSG:3857');
|
|
const googleProjection = getProjection('GOOGLE');
|
|
let point, y;
|
|
for (y = -20; y <= 20; ++y) {
|
|
point = [0, 1000000 * y];
|
|
expect(getPointResolution(googleProjection, 1, point)).to.roughlyEqual(
|
|
getPointResolution(epsg3857Projection, 1, point),
|
|
1e-1
|
|
);
|
|
}
|
|
});
|
|
|
|
it('numerically estimates point scale at various points', function () {
|
|
register(proj4);
|
|
const epsg3857Projection = getProjection('EPSG:3857');
|
|
const googleProjection = getProjection('GOOGLE');
|
|
let point, x, y;
|
|
for (x = -20; x <= 20; x += 2) {
|
|
for (y = -20; y <= 20; y += 2) {
|
|
point = [1000000 * x, 1000000 * y];
|
|
expect(
|
|
getPointResolution(googleProjection, 1, point)
|
|
).to.roughlyEqual(
|
|
getPointResolution(epsg3857Projection, 1, point),
|
|
1e-1
|
|
);
|
|
}
|
|
}
|
|
});
|
|
|
|
it('does not overwrite existing projections in the registry', function () {
|
|
register(proj4);
|
|
const epsg4326 = getProjection('EPSG:4326');
|
|
new Projection({
|
|
code: 'EPSG:4326',
|
|
units: 'degrees',
|
|
extent: [-45, -45, 45, 45],
|
|
});
|
|
expect(getProjection('EPSG:4326')).to.equal(epsg4326);
|
|
});
|
|
|
|
it('uses safe transform functions', function () {
|
|
register(proj4);
|
|
const wgs84 = getProjection('WGS84');
|
|
const epsg4326 = getProjection('EPSG:4326');
|
|
wgs84.setExtent(epsg4326.getExtent());
|
|
wgs84.setGlobal(true);
|
|
const google = getProjection('GOOGLE');
|
|
const epsg3857 = getProjection('EPSG:3857');
|
|
google.setExtent(epsg3857.getExtent());
|
|
google.setGlobal(true);
|
|
|
|
const coord = [-190, 85];
|
|
|
|
let expected = transform(coord, wgs84, google);
|
|
let got = transform(coord, epsg4326, epsg3857);
|
|
expect(got[0]).to.roughlyEqual(expected[0], 1e-7);
|
|
expect(got[1]).to.roughlyEqual(expected[1], 1e-7);
|
|
|
|
expected = transform(expected, google, wgs84);
|
|
got = transform(got, epsg3857, epsg4326);
|
|
expect(got[0]).to.roughlyEqual(expected[0], 1e-7);
|
|
expect(got[1]).to.roughlyEqual(expected[1], 1e-7);
|
|
});
|
|
});
|
|
|
|
describe('ol.proj.getTransformFromProjections()', function () {
|
|
beforeEach(function () {
|
|
register(proj4);
|
|
});
|
|
|
|
it('returns a transform function', function () {
|
|
const transform = getTransformFromProjections(
|
|
getProjection('GOOGLE'),
|
|
getProjection('EPSG:4326')
|
|
);
|
|
expect(typeof transform).to.be('function');
|
|
|
|
const 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 () {
|
|
const transform = getTransformFromProjections(
|
|
getProjection('GOOGLE'),
|
|
getProjection('EPSG:4326')
|
|
);
|
|
expect(typeof transform).to.be('function');
|
|
|
|
const 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.proj.getTransform()', function () {
|
|
beforeEach(function () {
|
|
register(proj4);
|
|
});
|
|
|
|
it('returns a function', function () {
|
|
const transform = getTransform('GOOGLE', 'EPSG:4326');
|
|
expect(typeof transform).to.be('function');
|
|
});
|
|
|
|
it('returns a transform function', function () {
|
|
const transform = getTransform('GOOGLE', 'EPSG:4326');
|
|
expect(typeof transform).to.be('function');
|
|
|
|
const 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 () {
|
|
const transform = getTransform('GOOGLE', 'EPSG:4326');
|
|
expect(typeof transform).to.be('function');
|
|
|
|
const 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 () {
|
|
const transform = getTransform('EPSG:3857', 'EPSG:4326');
|
|
const input = [-12000000, 5000000];
|
|
const output = [];
|
|
|
|
const 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 () {
|
|
const transform = getTransform('GOOGLE', 'EPSG:4326');
|
|
expect(typeof transform).to.be('function');
|
|
|
|
const dimension = 3;
|
|
const 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.proj.transform()', function () {
|
|
it('transforms a 2d coordinate', function () {
|
|
const got = transform([-10, -20], 'EPSG:4326', 'EPSG:3857');
|
|
expect(got).to.have.length(2);
|
|
expect(got[0]).to.roughlyEqual(-1113194.9079327357, 1e-3);
|
|
expect(got[1]).to.roughlyEqual(-2273030.92698769, 1e-3);
|
|
});
|
|
|
|
it('transforms a 3d coordinate', function () {
|
|
const got = transform([-10, -20, 3], 'EPSG:4326', 'EPSG:3857');
|
|
expect(got).to.have.length(3);
|
|
expect(got[0]).to.roughlyEqual(-1113194.9079327357, 1e-3);
|
|
expect(got[1]).to.roughlyEqual(-2273030.92698769, 1e-3);
|
|
expect(got[2]).to.be(3);
|
|
});
|
|
|
|
it('transforms a 4d coordinate', function () {
|
|
const got = transform([-10, -20, 3, 4], 'EPSG:4326', 'EPSG:3857');
|
|
expect(got).to.have.length(4);
|
|
expect(got[0]).to.roughlyEqual(-1113194.9079327357, 1e-3);
|
|
expect(got[1]).to.roughlyEqual(-2273030.92698769, 1e-3);
|
|
expect(got[2]).to.be(3);
|
|
expect(got[3]).to.be(4);
|
|
});
|
|
|
|
it('works with 3d points and proj4 defs', function () {
|
|
proj4.defs(
|
|
'custom',
|
|
'+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'
|
|
);
|
|
register(proj4);
|
|
|
|
const got = transform([-111, 45.5, 123], 'EPSG:4326', 'custom');
|
|
expect(got).to.have.length(3);
|
|
expect(got[0]).to.roughlyEqual(-6601512.194209638, 1);
|
|
expect(got[1]).to.roughlyEqual(6145843.802742112, 1);
|
|
expect(got[2]).to.be(123);
|
|
|
|
delete proj4.defs.custom;
|
|
clearAllProjections();
|
|
addCommon();
|
|
});
|
|
|
|
it('does not flip axis order', function () {
|
|
proj4.defs('enu', '+proj=longlat');
|
|
proj4.defs('neu', '+proj=longlat +axis=neu');
|
|
register(proj4);
|
|
|
|
const got = transform([1, 2], 'neu', 'enu');
|
|
expect(got).to.eql([1, 2]);
|
|
|
|
delete proj4.defs.enu;
|
|
delete proj4.defs.neu;
|
|
clearAllProjections();
|
|
addCommon();
|
|
});
|
|
});
|
|
|
|
describe('ol.proj.Projection.prototype.getMetersPerUnit()', function () {
|
|
beforeEach(function () {
|
|
proj4.defs(
|
|
'EPSG:26782',
|
|
'+proj=lcc +lat_1=29.3 +lat_2=30.7 +lat_0=28.66666666666667 ' +
|
|
'+lon_0=-91.33333333333333 +x_0=609601.2192024384 +y_0=0 ' +
|
|
'+ellps=clrk66 +datum=NAD27 +to_meter=0.3048006096012192 +no_defs'
|
|
);
|
|
proj4.defs(
|
|
'EPSG:3739',
|
|
'+proj=tmerc +lat_0=40.5 ' +
|
|
'+lon_0=-110.0833333333333 +k=0.9999375 +x_0=800000.0000101599 ' +
|
|
'+y_0=99999.99998983997 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 ' +
|
|
'+units=us-ft +no_defs'
|
|
);
|
|
proj4.defs(
|
|
'EPSG:4269',
|
|
'GEOGCS["NAD83",' +
|
|
'DATUM["North_American_Datum_1983",' +
|
|
'SPHEROID["GRS 1980",6378137,298.257222101,' +
|
|
'AUTHORITY["EPSG","7019"]],' +
|
|
'AUTHORITY["EPSG","6269"]],' +
|
|
'PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],' +
|
|
'UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],' +
|
|
'AUTHORITY["EPSG","4269"]]'
|
|
);
|
|
proj4.defs(
|
|
'EPSG:4279',
|
|
'GEOGCS["OS(SN)80",DATUM["OS_SN_1980",' +
|
|
'SPHEROID["Airy 1830",6377563.396,299.3249646,' +
|
|
'AUTHORITY["EPSG","7001"]],' +
|
|
'AUTHORITY["EPSG","6279"]],' +
|
|
'PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],' +
|
|
'UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],' +
|
|
'AUTHORITY["EPSG","4279"]]'
|
|
);
|
|
register(proj4);
|
|
});
|
|
|
|
afterEach(function () {
|
|
delete proj4.defs['EPSG:26782'];
|
|
delete proj4.defs['EPSG:3739'];
|
|
delete proj4.defs['EPSG:4269'];
|
|
delete proj4.defs['EPSG:4279'];
|
|
clearAllProjections();
|
|
addCommon();
|
|
});
|
|
|
|
it('returns value in meters', function () {
|
|
const epsg4326 = getProjection('EPSG:4326');
|
|
expect(epsg4326.getMetersPerUnit()).to.eql(metersPerDegree);
|
|
});
|
|
|
|
it('works for proj4js projections without units', function () {
|
|
const epsg26782 = getProjection('EPSG:26782');
|
|
expect(epsg26782.getMetersPerUnit()).to.eql(0.3048006096012192);
|
|
});
|
|
|
|
it('works for proj4js projections with units other than m', function () {
|
|
const epsg3739 = getProjection('EPSG:3739');
|
|
expect(epsg3739.getMetersPerUnit()).to.eql(1200 / 3937);
|
|
});
|
|
|
|
it('works for proj4js OGC WKT GEOGCS projections', function () {
|
|
const epsg4269 = getProjection('EPSG:4269');
|
|
expect(epsg4269.getMetersPerUnit()).to.eql(6378137 * 0.01745329251994328);
|
|
const epsg4279 = getProjection('EPSG:4279');
|
|
expect(epsg4279.getMetersPerUnit()).to.eql(
|
|
6377563.396 * 0.01745329251994328
|
|
);
|
|
});
|
|
});
|
|
});
|