277 lines
9.1 KiB
JavaScript
277 lines
9.1 KiB
JavaScript
describe("CRS.EPSG3857", function () {
|
|
var crs = L.CRS.EPSG3857;
|
|
|
|
describe("#latLngToPoint", function () {
|
|
it("projects a center point", function () {
|
|
expect(crs.latLngToPoint(L.latLng(0, 0), 0)).near(new L.Point(128, 128), 0.01);
|
|
});
|
|
|
|
it("projects the northeast corner of the world", function () {
|
|
expect(crs.latLngToPoint(L.latLng(85.0511287798, 180), 0)).near(new L.Point(256, 0));
|
|
});
|
|
});
|
|
|
|
describe("#pointToLatLng", function () {
|
|
it("reprojects a center point", function () {
|
|
expect(crs.pointToLatLng(new L.Point(128, 128), 0)).nearLatLng(L.latLng(0, 0), 0.01);
|
|
});
|
|
|
|
it("reprojects the northeast corner of the world", function () {
|
|
expect(crs.pointToLatLng(new L.Point(256, 0), 0)).nearLatLng(L.latLng(85.0511287798, 180));
|
|
});
|
|
});
|
|
|
|
describe("project", function () {
|
|
it('projects geo coords into meter coords correctly', function () {
|
|
expect(crs.project(new L.LatLng(50, 30))).near(new L.Point(3339584.7238, 6446275.84102));
|
|
expect(crs.project(new L.LatLng(85.0511287798, 180))).near(new L.Point(20037508.34279, 20037508.34278));
|
|
expect(crs.project(new L.LatLng(-85.0511287798, -180))).near(new L.Point(-20037508.34279, -20037508.34278));
|
|
});
|
|
});
|
|
|
|
describe("unproject", function () {
|
|
it('unprojects meter coords into geo coords correctly', function () {
|
|
expect(crs.unproject(new L.Point(3339584.7238, 6446275.84102))).nearLatLng(new L.LatLng(50, 30));
|
|
expect(crs.unproject(new L.Point(20037508.34279, 20037508.34278))).nearLatLng(new L.LatLng(85.051129, 180));
|
|
expect(crs.unproject(new L.Point(-20037508.34279, -20037508.34278))).nearLatLng(new L.LatLng(-85.051129, -180));
|
|
});
|
|
});
|
|
|
|
describe("#getProjectedBounds", function () {
|
|
it("gives correct size", function () {
|
|
var i,
|
|
worldSize = 256,
|
|
crsSize;
|
|
for (i = 0; i <= 22; i++) {
|
|
crsSize = crs.getProjectedBounds(i).getSize();
|
|
expect(crsSize.x).equal(worldSize);
|
|
expect(crsSize.y).equal(worldSize);
|
|
worldSize *= 2;
|
|
}
|
|
});
|
|
});
|
|
|
|
describe('#wrapLatLng', function () {
|
|
it("wraps longitude to lie between -180 and 180 by default", function () {
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 190)).lng).to.eql(-170);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 360)).lng).to.eql(0);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 380)).lng).to.eql(20);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, -190)).lng).to.eql(170);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, -360)).lng).to.eql(0);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, -380)).lng).to.eql(-20);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 90)).lng).to.eql(90);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 180)).lng).to.eql(180);
|
|
});
|
|
|
|
it("does not drop altitude", function () {
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 190, 1234)).lng).to.eql(-170);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 190, 1234)).alt).to.eql(1234);
|
|
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 380, 1234)).lng).to.eql(20);
|
|
expect(crs.wrapLatLng(new L.LatLng(0, 380, 1234)).alt).to.eql(1234);
|
|
});
|
|
});
|
|
|
|
describe('#wrapLatLngBounds', function () {
|
|
it("does not wrap bounds between -180 and 180 longitude", function () {
|
|
|
|
var bounds1 = L.latLngBounds([-10, -10], [10, 10]);
|
|
var bounds2 = L.latLngBounds([-80, -180], [-70, -170]);
|
|
var bounds3 = L.latLngBounds([70, 170], [80, 180]);
|
|
|
|
bounds1 = crs.wrapLatLngBounds(bounds1);
|
|
bounds2 = crs.wrapLatLngBounds(bounds2);
|
|
bounds3 = crs.wrapLatLngBounds(bounds3);
|
|
|
|
expect(bounds1.getSouth()).to.eql(-10);
|
|
expect(bounds1.getWest()).to.eql(-10);
|
|
expect(bounds1.getNorth()).to.eql(10);
|
|
expect(bounds1.getEast()).to.eql(10);
|
|
|
|
expect(bounds2.getSouth()).to.eql(-80);
|
|
expect(bounds2.getWest()).to.eql(-180);
|
|
expect(bounds2.getNorth()).to.eql(-70);
|
|
expect(bounds2.getEast()).to.eql(-170);
|
|
|
|
expect(bounds3.getSouth()).to.eql(70);
|
|
expect(bounds3.getWest()).to.eql(170);
|
|
expect(bounds3.getNorth()).to.eql(80);
|
|
expect(bounds3.getEast()).to.eql(180);
|
|
|
|
});
|
|
|
|
it("wraps bounds when center longitude is less than -180", function () {
|
|
var bounds1 = L.latLngBounds([0, -185], [10, -170]);
|
|
var bounds2 = L.latLngBounds([0, -190], [10, -175]);
|
|
|
|
bounds1 = crs.wrapLatLngBounds(bounds1);
|
|
bounds2 = crs.wrapLatLngBounds(bounds2);
|
|
|
|
expect(bounds1.getSouth()).to.eql(0);
|
|
expect(bounds1.getWest()).to.eql(-185);
|
|
expect(bounds1.getNorth()).to.eql(10);
|
|
expect(bounds1.getEast()).to.eql(-170);
|
|
|
|
expect(bounds2.getSouth()).to.eql(0);
|
|
expect(bounds2.getWest()).to.eql(170);
|
|
expect(bounds2.getNorth()).to.eql(10);
|
|
expect(bounds2.getEast()).to.eql(185);
|
|
});
|
|
|
|
it("wraps bounds when center longitude is larger than +180", function () {
|
|
var bounds1 = L.latLngBounds([0, 185], [10, 170]);
|
|
var bounds2 = L.latLngBounds([0, 190], [10, 175]);
|
|
|
|
bounds1 = crs.wrapLatLngBounds(bounds1);
|
|
bounds2 = crs.wrapLatLngBounds(bounds2);
|
|
|
|
expect(bounds1.getSouth()).to.eql(0);
|
|
expect(bounds1.getWest()).to.eql(170);
|
|
expect(bounds1.getNorth()).to.eql(10);
|
|
expect(bounds1.getEast()).to.eql(185);
|
|
|
|
expect(bounds2.getSouth()).to.eql(0);
|
|
expect(bounds2.getWest()).to.eql(-185);
|
|
expect(bounds2.getNorth()).to.eql(10);
|
|
expect(bounds2.getEast()).to.eql(-170);
|
|
});
|
|
|
|
});
|
|
|
|
});
|
|
|
|
describe("CRS.EPSG4326", function () {
|
|
var crs = L.CRS.EPSG4326;
|
|
|
|
describe("#getSize", function () {
|
|
it("gives correct size", function () {
|
|
var i,
|
|
worldSize = 256,
|
|
crsSize;
|
|
for (i = 0; i <= 22; i++) {
|
|
crsSize = crs.getProjectedBounds(i).getSize();
|
|
expect(crsSize.x).equal(worldSize * 2);
|
|
// Lat bounds are half as high (-90/+90 compared to -180/+180)
|
|
expect(crsSize.y).equal(worldSize);
|
|
worldSize *= 2;
|
|
}
|
|
});
|
|
});
|
|
});
|
|
|
|
describe("CRS.EPSG3395", function () {
|
|
var crs = L.CRS.EPSG3395;
|
|
|
|
describe("#latLngToPoint", function () {
|
|
it("projects a center point", function () {
|
|
expect(crs.latLngToPoint(L.latLng(0, 0), 0)).near(new L.Point(128, 128), 0.01);
|
|
});
|
|
|
|
it("projects the northeast corner of the world", function () {
|
|
expect(crs.latLngToPoint(L.latLng(85.0840591556, 180), 0)).near(new L.Point(256, 0));
|
|
});
|
|
});
|
|
|
|
describe("#pointToLatLng", function () {
|
|
it("reprojects a center point", function () {
|
|
expect(crs.pointToLatLng(new L.Point(128, 128), 0)).nearLatLng(L.latLng(0, 0), 0.01);
|
|
});
|
|
|
|
it("reprojects the northeast corner of the world", function () {
|
|
expect(crs.pointToLatLng(new L.Point(256, 0), 0)).nearLatLng(L.latLng(85.0840591556, 180));
|
|
});
|
|
});
|
|
});
|
|
|
|
describe("CRS.Simple", function () {
|
|
var crs = L.CRS.Simple;
|
|
|
|
describe("#latLngToPoint", function () {
|
|
it("converts LatLng coords to pixels", function () {
|
|
expect(crs.latLngToPoint(L.latLng(0, 0), 0)).near(new L.Point(0, 0));
|
|
expect(crs.latLngToPoint(L.latLng(700, 300), 0)).near(new L.Point(300, -700));
|
|
expect(crs.latLngToPoint(L.latLng(-200, 1000), 1)).near(new L.Point(2000, 400));
|
|
});
|
|
});
|
|
|
|
describe("#pointToLatLng", function () {
|
|
it("converts pixels to LatLng coords", function () {
|
|
expect(crs.pointToLatLng(L.point(0, 0), 0)).nearLatLng(new L.LatLng(0, 0));
|
|
expect(crs.pointToLatLng(L.point(300, -700), 0)).nearLatLng(new L.LatLng(700, 300));
|
|
expect(crs.pointToLatLng(L.point(2000, 400), 1)).nearLatLng(new L.LatLng(-200, 1000));
|
|
});
|
|
});
|
|
|
|
describe("getProjectedBounds", function () {
|
|
it("returns nothing", function () {
|
|
expect(crs.getProjectedBounds(5)).to.be(null);
|
|
});
|
|
});
|
|
|
|
describe("wrapLatLng", function () {
|
|
it("returns coords as is", function () {
|
|
expect(crs.wrapLatLng(new L.LatLng(270, 400)).equals(new L.LatLng(270, 400))).to.be(true);
|
|
});
|
|
it("wraps coords if configured", function () {
|
|
var crs = L.extend({}, L.CRS.Simple, {
|
|
wrapLng: [-200, 200],
|
|
wrapLat: [-200, 200]
|
|
});
|
|
|
|
expect(crs.wrapLatLng(new L.LatLng(300, -250))).nearLatLng(new L.LatLng(-100, 150));
|
|
});
|
|
});
|
|
});
|
|
|
|
describe("CRS", function () {
|
|
var crs = L.CRS;
|
|
|
|
describe("#zoom && #scale", function () {
|
|
it("convert zoom to scale and viceversa and return the same values", function () {
|
|
var zoom = 2.5;
|
|
var scale = crs.scale(zoom);
|
|
expect(crs.zoom(scale)).to.eql(zoom);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe("CRS.ZoomNotPowerOfTwo", function () {
|
|
var crs = L.extend({}, L.CRS, {
|
|
scale: function (zoom) {
|
|
return 256 * Math.pow(1.5, zoom);
|
|
},
|
|
zoom: function (scale) {
|
|
return Math.log(scale / 256) / Math.log(1.5);
|
|
}
|
|
});
|
|
|
|
describe("#scale", function () {
|
|
it("of zoom levels are related by a power of 1.5", function () {
|
|
var zoom = 5;
|
|
var scale = crs.scale(zoom);
|
|
expect(crs.scale(zoom + 1)).to.eql(1.5 * scale);
|
|
expect(crs.zoom(1.5 * scale)).to.eql(zoom + 1);
|
|
});
|
|
});
|
|
|
|
describe("#zoom && #scale", function () {
|
|
it("convert zoom to scale and viceversa and return the same values", function () {
|
|
var zoom = 2;
|
|
var scale = crs.scale(zoom);
|
|
expect(crs.zoom(scale)).to.eql(zoom);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe("CRS.Earth", function () {
|
|
describe("#distance", function () {
|
|
// Test values from http://rosettacode.org/wiki/Haversine_formula,
|
|
// we assume using mean earth radius (https://en.wikipedia.org/wiki/Earth_radius#Mean_radius)
|
|
// is correct, since that's what International Union of Geodesy and Geophysics recommends,
|
|
// and that sounds serious.
|
|
var p1 = L.latLng(36.12, -86.67);
|
|
var p2 = L.latLng(33.94, -118.40);
|
|
expect(L.CRS.Earth.distance(p1, p2)).to.be.within(2886444.43, 2886444.45);
|
|
});
|
|
});
|