openlayers
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Build tools and sources for developing OpenLayers based mapping applications
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JavaScript
goog.provide('ol.test.geom.GeometryCollection');
goog.require('ol.geom.Geometry');
goog.require('ol.geom.GeometryCollection');
goog.require('ol.geom.LineString');
goog.require('ol.geom.Point');
goog.require('ol.geom.Polygon');
describe('ol.geom.GeometryCollection', function() {
var outer = [[0, 0], [0, 10], [10, 10], [10, 0], [0, 0]];
var inner1 = [[1, 1], [2, 1], [2, 2], [1, 2], [1, 1]];
var inner2 = [[8, 8], [9, 8], [9, 9], [8, 9], [8, 8]];
describe('constructor', function() {
var line, multi, point, poly;
beforeEach(function() {
point = new ol.geom.Point([10, 20]);
line = new ol.geom.LineString([[10, 20], [30, 40]]);
poly = new ol.geom.Polygon([outer, inner1, inner2]);
multi = new ol.geom.GeometryCollection([point, line, poly]);
});
it('creates a geometry collection from an array of geometries', function() {
expect(multi).to.be.a(ol.geom.GeometryCollection);
expect(multi).to.be.a(ol.geom.Geometry);
});
it('fires a change event when one of its component changes',
function(done) {
multi.on('change', function() {
done();
});
point.setCoordinates([10, 10]);
}
);
it('deregister old components', function() {
multi.setGeometries([poly]);
multi.on('change', function() {
expect().fail();
});
point.setCoordinates([10, 10]);
});
it('register new components', function(done) {
var point2 = new ol.geom.Point([10, 20]);
multi.setGeometriesArray([point2]);
multi.on('change', function() {
done();
});
point2.setCoordinates([10, 10]);
});
});
describe('#getGeometries', function() {
it('returns a collection of geometries', function() {
var point = new ol.geom.Point([10, 20]);
var line = new ol.geom.LineString([[10, 20], [30, 40]]);
var poly = new ol.geom.Polygon([outer, inner1, inner2]);
var multi = new ol.geom.GeometryCollection([point, line, poly]);
var geometries = multi.getGeometries();
expect(geometries).to.be.an(Array);
expect(geometries).to.have.length(3);
expect(geometries[0]).to.be.a(ol.geom.Point);
expect(geometries[1]).to.be.a(ol.geom.LineString);
expect(geometries[2]).to.be.a(ol.geom.Polygon);
});
});
describe('#clone()', function() {
it('has a working clone method', function() {
var point = new ol.geom.Point([10, 20]);
var line = new ol.geom.LineString([[10, 20], [30, 40]]);
var poly = new ol.geom.Polygon([outer, inner1, inner2]);
var multi = new ol.geom.GeometryCollection([point, line, poly]);
var clone = multi.clone();
expect(clone).to.not.be(multi);
var geometries = clone.getGeometries();
expect(geometries[0].getCoordinates()).to.eql([10, 20]);
expect(geometries[1].getCoordinates()).to.eql([[10, 20], [30, 40]]);
expect(geometries[2].getCoordinates()).to.eql([outer, inner1, inner2]);
});
it('does a deep clone', function() {
var point = new ol.geom.Point([30, 40]);
var originalGeometries = [point];
var multi = new ol.geom.GeometryCollection(originalGeometries);
var clone = multi.clone();
var clonedGeometries = clone.getGeometries();
expect(clonedGeometries).not.to.be(originalGeometries);
expect(clonedGeometries).to.have.length(originalGeometries.length);
expect(clonedGeometries).to.have.length(1);
expect(clonedGeometries[0]).not.to.be(originalGeometries[0]);
expect(clonedGeometries[0].getCoordinates()).
to.eql(originalGeometries[0].getCoordinates());
});
});
describe('#getExtent()', function() {
it('returns the bounding extent', function() {
var point = new ol.geom.Point([10, 2]);
var line = new ol.geom.LineString([[1, 20], [30, 40]]);
var multi = new ol.geom.GeometryCollection([point, line]);
var extent = multi.getExtent();
expect(extent[0]).to.be(1);
expect(extent[2]).to.be(30);
expect(extent[1]).to.be(2);
expect(extent[3]).to.be(40);
});
});
describe('#intersectsExtent()', function() {
var point, line, poly, multi;
beforeEach(function() {
point = new ol.geom.Point([5, 20]);
line = new ol.geom.LineString([[10, 20], [30, 40]]);
poly = new ol.geom.Polygon([outer, inner1, inner2]);
multi = new ol.geom.GeometryCollection([point, line, poly]);
});
it('returns true for intersecting point', function() {
expect(multi.intersectsExtent([5, 20, 5, 20])).to.be(true);
});
it('returns true for intersecting part of lineString', function() {
expect(multi.intersectsExtent([25, 35, 30, 40])).to.be(true);
});
it('returns true for intersecting part of polygon', function() {
expect(multi.intersectsExtent([0, 0, 5, 5])).to.be(true);
});
it('returns false for non-matching extent within own extent', function() {
var extent = [0, 35, 5, 40];
expect(poly.intersectsExtent(extent)).to.be(false);
});
});
describe('#setGeometries', function() {
var line, multi, point, poly;
beforeEach(function() {
point = new ol.geom.Point([10, 20]);
line = new ol.geom.LineString([[10, 20], [30, 40]]);
poly = new ol.geom.Polygon([outer, inner1, inner2]);
multi = new ol.geom.GeometryCollection([point, line, poly]);
});
it('fires a change event', function() {
var listener = sinon.spy();
multi.on('change', listener);
multi.setGeometries([point, line, poly]);
expect(listener.calledOnce).to.be(true);
});
it('updates the extent', function() {
expect(multi.getExtent()).to.eql([0, 0, 30, 40]);
line.setCoordinates([[10, 20], [300, 400]]);
expect(multi.getExtent()).to.eql([0, 0, 300, 400]);
});
});
describe('#scale()', function() {
it('scales a collection', function() {
var geom = new ol.geom.GeometryCollection([
new ol.geom.Point([-1, -2]),
new ol.geom.LineString([[0, 0], [1, 2]])
]);
geom.scale(10);
var geometries = geom.getGeometries();
expect(geometries[0].getCoordinates()).to.eql([-10, -20]);
expect(geometries[1].getCoordinates()).to.eql([[0, 0], [10, 20]]);
});
it('accepts sx and sy', function() {
var geom = new ol.geom.GeometryCollection([
new ol.geom.Point([-1, -2]),
new ol.geom.LineString([[0, 0], [1, 2]])
]);
geom.scale(2, 3);
var geometries = geom.getGeometries();
expect(geometries[0].getCoordinates()).to.eql([-2, -6]);
expect(geometries[1].getCoordinates()).to.eql([[0, 0], [2, 6]]);
});
it('accepts an anchor', function() {
var geom = new ol.geom.GeometryCollection([
new ol.geom.Point([-1, -2]),
new ol.geom.LineString([[0, 0], [1, 2]])
]);
geom.scale(10, 15, [-1, -2]);
var geometries = geom.getGeometries();
expect(geometries[0].getCoordinates()).to.eql([-1, -2]);
expect(geometries[1].getCoordinates()).to.eql([[9, 28], [19, 58]]);
});
});
describe('#transform()', function() {
var line, multi, point;
beforeEach(function() {
point = new ol.geom.Point([10, 20]);
line = new ol.geom.LineString([[10, 20], [30, 40]]);
multi = new ol.geom.GeometryCollection([point, line]);
});
it('transforms all geometries', function() {
multi.transform('EPSG:4326', 'EPSG:3857');
var geometries = multi.getGeometries();
expect(geometries[0]).to.be.a(ol.geom.Point);
expect(geometries[1]).to.be.a(ol.geom.LineString);
var coords = geometries[0].getCoordinates();
expect(coords[0]).to.roughlyEqual(1113194.90, 1e-2);
expect(coords[1]).to.roughlyEqual(2273030.92, 1e-2);
coords = geometries[1].getCoordinates();
expect(coords[0][0]).to.roughlyEqual(1113194.90, 1e-2);
expect(coords[0][1]).to.roughlyEqual(2273030.92, 1e-2);
expect(coords[1][0]).to.roughlyEqual(3339584.72, 1e-2);
expect(coords[1][1]).to.roughlyEqual(4865942.27, 1e-2);
});
});
});