ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Function for getting great circle lengths

Browse Source
This commit is contained in:
Tim Schaub
2017-08-10 17:45:22 -06:00
parent 445c157ee3
commit 92c62e5432
5 changed files with 212 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
test/spec/ol/proj/index.test.js
+6 -6
View File
@@ -221,21 +221,21 @@ describe('ol.proj', function() {
});
it('returns the correct point resolution for EPSG:4326 with custom units', function() {
var pointResolution = ol.proj.getPointResolution('EPSG:4326', 1, [0, 0], 'm');
expect (pointResolution).to.roughlyEqual(111194.874284, 1e-5);
expect(pointResolution).to.roughlyEqual(111195.0802335329, 1e-5);
pointResolution = ol.proj.getPointResolution('EPSG:4326', 1, [0, 52], 'm');
expect (pointResolution).to.roughlyEqual(89826.367538, 1e-5);
expect(pointResolution).to.roughlyEqual(89826.53390979706, 1e-5);
});
it('returns the correct point resolution for EPSG:3857', function() {
var pointResolution = ol.proj.getPointResolution('EPSG:3857', 1, [0, 0]);
expect (pointResolution).to.be(1);
expect(pointResolution).to.be(1);
pointResolution = ol.proj.getPointResolution('EPSG:3857', 1, ol.proj.fromLonLat([0, 52]));
expect (pointResolution).to.roughlyEqual(0.615661, 1e-5);
expect(pointResolution).to.roughlyEqual(0.615661, 1e-5);
});
it('returns the correct point resolution for EPSG:3857 with custom units', function() {
var pointResolution = ol.proj.getPointResolution('EPSG:3857', 1, [0, 0], 'degrees');
expect (pointResolution).to.be(1);
expect(pointResolution).to.be(1);
pointResolution = ol.proj.getPointResolution('EPSG:4326', 1, ol.proj.fromLonLat([0, 52]), 'degrees');
expect (pointResolution).to.be(1);
expect(pointResolution).to.be(1);
});
});
test/spec/ol/sphere/index.test.js → test/spec/ol/sphere.test.js
+69
View File
@@ -108,3 +108,72 @@ describe('ol.Sphere', function() {
});
});
describe('ol.Sphere.getLength()', function() {
var cases = [{
geometry: new ol.geom.Point([0, 0]),
length: 0
}, {
geometry: new ol.geom.MultiPoint([[0, 0], [1, 1]]),
length: 0
}, {
geometry: new ol.geom.LineString([
[12801741.441226462, -3763310.627144653],
[14582853.293918837, -2511525.2348457114],
[15918687.18343812, -2875744.624352243],
[16697923.618991036, -4028802.0261344076]
]),
length: 4407939.124914191
}, {
geometry: new ol.geom.LineString([
[115, -32],
[131, -22],
[143, -25],
[150, -34]
]),
options: {projection: 'EPSG:4326'},
length: 4407939.124914191
}, {
geometry: new ol.geom.MultiLineString([
[
[115, -32],
[131, -22],
[143, -25],
[150, -34]
], [
[115, -32],
[131, -22],
[143, -25],
[150, -34]
]
]),
options: {projection: 'EPSG:4326'},
length: 2 * 4407939.124914191
}, {
geometry: new ol.geom.GeometryCollection([
new ol.geom.LineString([
[115, -32],
[131, -22],
[143, -25],
[150, -34]
]),
new ol.geom.LineString([
[115, -32],
[131, -22],
[143, -25],
[150, -34]
])
]),
options: {projection: 'EPSG:4326'},
length: 2 * 4407939.124914191
}];
cases.forEach(function(c, i) {
it('works for case ' + i, function() {
var c = cases[i];
var length = ol.Sphere.getLength(c.geometry, c.options);
expect(length).to.equal(c.length);
});
});
});