388 lines
13 KiB
JavaScript
388 lines
13 KiB
JavaScript
import Feature from '../../../../../src/ol/Feature.js';
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import LineString from '../../../../../src/ol/geom/LineString.js';
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import Polyline, * as polyline from '../../../../../src/ol/format/Polyline.js';
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import {get as getProjection, transform} from '../../../../../src/ol/proj.js';
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describe('ol.format.Polyline', function () {
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let format;
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let points;
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let flatPoints, encodedFlatPoints, flippedFlatPoints;
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let floats, smallFloats, encodedFloats;
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let signedIntegers, encodedSignedIntegers;
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let unsignedIntegers, encodedUnsignedIntegers;
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let points3857;
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function resetTestingData() {
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format = new Polyline();
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points = [
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[-120.2, 38.5],
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[-120.95, 40.7],
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[-126.453, 43.252],
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];
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flatPoints = [-120.2, 38.5, -120.95, 40.7, -126.453, 43.252];
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flippedFlatPoints = [38.5, -120.2, 40.7, -120.95, 43.252, -126.453];
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encodedFlatPoints = '_p~iF~ps|U_ulLnnqC_mqNvxq`@';
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points3857 = [
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transform([-120.2, 38.5], 'EPSG:4326', 'EPSG:3857'),
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transform([-120.95, 40.7], 'EPSG:4326', 'EPSG:3857'),
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transform([-126.453, 43.252], 'EPSG:4326', 'EPSG:3857'),
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];
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floats = [0.0, 0.15, -0.01, -0.16, 0.16, 0.01];
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smallFloats = [0.0, 0.00015, -0.00001, -0.00016, 0.00016, 0.00001];
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encodedFloats = '?]@^_@A';
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signedIntegers = [0, 15, -1, -16, 16, 1];
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encodedSignedIntegers = '?]@^_@A';
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unsignedIntegers = [0, 30, 1, 31, 32, 2, 174];
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encodedUnsignedIntegers = '?]@^_@AmD';
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}
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// Reset testing data
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beforeEach(resetTestingData);
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describe('#readProjectionFromText', function () {
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it('returns the default projection', function () {
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const projection = format.readProjectionFromText(encodedFlatPoints);
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expect(projection).to.eql(getProjection('EPSG:4326'));
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});
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});
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describe('encodeDeltas', function () {
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it('returns expected value', function () {
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const encodeDeltas = polyline.encodeDeltas;
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expect(encodeDeltas(flippedFlatPoints, 2)).to.eql(encodedFlatPoints);
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});
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});
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describe('decodeDeltas', function () {
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it('returns expected value', function () {
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const decodeDeltas = polyline.decodeDeltas;
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expect(decodeDeltas(encodedFlatPoints, 2)).to.eql(flippedFlatPoints);
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});
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});
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describe('encodeFloats', function () {
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it('returns expected value', function () {
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const encodeFloats = polyline.encodeFloats;
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expect(encodeFloats(smallFloats)).to.eql(encodedFloats);
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resetTestingData();
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expect(encodeFloats(smallFloats, 1e5)).to.eql(encodedFloats);
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expect(encodeFloats(floats, 1e2)).to.eql(encodedFloats);
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});
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});
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describe('decodeFloats', function () {
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it('returns expected value', function () {
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const decodeFloats = polyline.decodeFloats;
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expect(decodeFloats(encodedFloats)).to.eql(smallFloats);
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expect(decodeFloats(encodedFloats, 1e5)).to.eql(smallFloats);
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expect(decodeFloats(encodedFloats, 1e2)).to.eql(floats);
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});
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});
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describe('encodeSignedIntegers', function () {
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it('returns expected value', function () {
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const encodeSignedIntegers = polyline.encodeSignedIntegers;
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expect(encodeSignedIntegers(signedIntegers)).to.eql(
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encodedSignedIntegers
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);
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});
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});
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describe('decodeSignedIntegers', function () {
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it('returns expected value', function () {
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const decodeSignedIntegers = polyline.decodeSignedIntegers;
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expect(decodeSignedIntegers(encodedSignedIntegers)).to.eql(
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signedIntegers
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);
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});
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});
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describe('encodeUnsignedIntegers', function () {
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it('returns expected value', function () {
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const encodeUnsignedIntegers = polyline.encodeUnsignedIntegers;
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expect(encodeUnsignedIntegers(unsignedIntegers)).to.eql(
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encodedUnsignedIntegers
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);
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});
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});
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describe('decodeUnsignedIntegers', function () {
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it('returns expected value', function () {
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const decodeUnsignedIntegers = polyline.decodeUnsignedIntegers;
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expect(decodeUnsignedIntegers(encodedUnsignedIntegers)).to.eql(
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unsignedIntegers
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);
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});
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});
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describe('encodeFloat', function () {
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it('returns expected value', function () {
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const encodeFloats = polyline.encodeFloats;
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expect(encodeFloats([0.0])).to.eql('?');
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expect(encodeFloats([-0.00001])).to.eql('@');
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expect(encodeFloats([0.00001])).to.eql('A');
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expect(encodeFloats([-0.00002])).to.eql('B');
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expect(encodeFloats([0.00002])).to.eql('C');
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expect(encodeFloats([0.00015])).to.eql(']');
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expect(encodeFloats([-0.00016])).to.eql('^');
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expect(encodeFloats([-0.1], 10)).to.eql('@');
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expect(encodeFloats([0.1], 10)).to.eql('A');
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expect(encodeFloats([(16 * 32) / 1e5])).to.eql('__@');
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expect(encodeFloats([(16 * 32 * 32) / 1e5])).to.eql('___@');
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// from the "Encoded Polyline Algorithm Format" page at Google
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expect(encodeFloats([-179.9832104])).to.eql('`~oia@');
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});
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});
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describe('decodeFloat', function () {
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it('returns expected value', function () {
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const decodeFloats = polyline.decodeFloats;
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expect(decodeFloats('?')).to.eql([0.0]);
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expect(decodeFloats('@')).to.eql([-0.00001]);
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expect(decodeFloats('A')).to.eql([0.00001]);
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expect(decodeFloats('B')).to.eql([-0.00002]);
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expect(decodeFloats('C')).to.eql([0.00002]);
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expect(decodeFloats(']')).to.eql([0.00015]);
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expect(decodeFloats('^')).to.eql([-0.00016]);
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expect(decodeFloats('@', 10)).to.eql([-0.1]);
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expect(decodeFloats('A', 10)).to.eql([0.1]);
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expect(decodeFloats('__@')).to.eql([(16 * 32) / 1e5]);
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expect(decodeFloats('___@')).to.eql([(16 * 32 * 32) / 1e5]);
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// from the "Encoded Polyline Algorithm Format" page at Google
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expect(decodeFloats('`~oia@')).to.eql([-179.98321]);
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});
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});
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describe('encodeSignedInteger', function () {
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it('returns expected value', function () {
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const encodeSignedIntegers = polyline.encodeSignedIntegers;
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expect(encodeSignedIntegers([0])).to.eql('?');
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expect(encodeSignedIntegers([-1])).to.eql('@');
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expect(encodeSignedIntegers([1])).to.eql('A');
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expect(encodeSignedIntegers([-2])).to.eql('B');
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expect(encodeSignedIntegers([2])).to.eql('C');
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expect(encodeSignedIntegers([15])).to.eql(']');
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expect(encodeSignedIntegers([-16])).to.eql('^');
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expect(encodeSignedIntegers([16])).to.eql('_@');
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expect(encodeSignedIntegers([16 * 32])).to.eql('__@');
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expect(encodeSignedIntegers([16 * 32 * 32])).to.eql('___@');
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});
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});
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describe('decodeSignedInteger', function () {
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it('returns expected value', function () {
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const decodeSignedIntegers = polyline.decodeSignedIntegers;
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expect(decodeSignedIntegers('?')).to.eql([0]);
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expect(decodeSignedIntegers('@')).to.eql([-1]);
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expect(decodeSignedIntegers('A')).to.eql([1]);
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expect(decodeSignedIntegers('B')).to.eql([-2]);
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expect(decodeSignedIntegers('C')).to.eql([2]);
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expect(decodeSignedIntegers(']')).to.eql([15]);
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expect(decodeSignedIntegers('^')).to.eql([-16]);
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expect(decodeSignedIntegers('_@')).to.eql([16]);
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expect(decodeSignedIntegers('__@')).to.eql([16 * 32]);
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expect(decodeSignedIntegers('___@')).to.eql([16 * 32 * 32]);
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});
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});
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describe('encodeUnsignedInteger', function () {
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it('returns expected value', function () {
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const encodeUnsignedInteger = polyline.encodeUnsignedInteger;
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expect(encodeUnsignedInteger(0)).to.eql('?');
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expect(encodeUnsignedInteger(1)).to.eql('@');
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expect(encodeUnsignedInteger(2)).to.eql('A');
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expect(encodeUnsignedInteger(30)).to.eql(']');
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expect(encodeUnsignedInteger(31)).to.eql('^');
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expect(encodeUnsignedInteger(32)).to.eql('_@');
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expect(encodeUnsignedInteger(32 * 32)).to.eql('__@');
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expect(encodeUnsignedInteger(5 * 32 * 32)).to.eql('__D');
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expect(encodeUnsignedInteger(32 * 32 * 32)).to.eql('___@');
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// from the "Encoded Polyline Algorithm Format" page at Google
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expect(encodeUnsignedInteger(174)).to.eql('mD');
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});
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});
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describe('decodeUnsignedInteger', function () {
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it('returns expected value', function () {
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const decodeUnsignedIntegers = polyline.decodeUnsignedIntegers;
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expect(decodeUnsignedIntegers('?')).to.eql([0]);
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expect(decodeUnsignedIntegers('@')).to.eql([1]);
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expect(decodeUnsignedIntegers('A')).to.eql([2]);
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expect(decodeUnsignedIntegers(']')).to.eql([30]);
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expect(decodeUnsignedIntegers('^')).to.eql([31]);
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expect(decodeUnsignedIntegers('_@')).to.eql([32]);
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expect(decodeUnsignedIntegers('__@')).to.eql([32 * 32]);
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expect(decodeUnsignedIntegers('__D')).to.eql([5 * 32 * 32]);
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expect(decodeUnsignedIntegers('___@')).to.eql([32 * 32 * 32]);
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// from the "Encoded Polyline Algorithm Format" page at Google
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expect(decodeUnsignedIntegers('mD')).to.eql([174]);
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});
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});
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describe('#readFeature', function () {
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it('returns the expected feature', function () {
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const feature = format.readFeature(encodedFlatPoints);
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expect(feature).to.be.an(Feature);
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const geometry = feature.getGeometry();
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expect(geometry).to.be.an(LineString);
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expect(geometry.getFlatCoordinates()).to.eql(flatPoints);
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});
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it('transforms and returns the expected feature', function () {
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const feature = format.readFeature(encodedFlatPoints, {
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featureProjection: 'EPSG:3857',
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});
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expect(feature).to.be.an(Feature);
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const geometry = feature.getGeometry();
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expect(geometry).to.be.an(LineString);
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expect(geometry.getCoordinates()).to.eql(points3857);
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});
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});
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describe('#readFeatures', function () {
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it('returns the expected feature', function () {
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const features = format.readFeatures(encodedFlatPoints);
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expect(features).to.be.an(Array);
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expect(features).to.have.length(1);
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const feature = features[0];
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expect(feature).to.be.an(Feature);
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const geometry = feature.getGeometry();
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expect(geometry).to.be.an(LineString);
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expect(geometry.getFlatCoordinates()).to.eql(flatPoints);
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});
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it('transforms and returns the expected features', function () {
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const features = format.readFeatures(encodedFlatPoints, {
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featureProjection: 'EPSG:3857',
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});
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expect(features).to.be.an(Array);
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expect(features).to.have.length(1);
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const feature = features[0];
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expect(feature).to.be.an(Feature);
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const geometry = feature.getGeometry();
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expect(geometry).to.be.an(LineString);
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expect(geometry.getCoordinates()).to.eql(points3857);
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});
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});
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describe('#readGeometry', function () {
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it('returns the expected geometry', function () {
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const geometry = format.readGeometry(encodedFlatPoints);
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expect(geometry).to.be.an(LineString);
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expect(geometry.getFlatCoordinates()).to.eql(flatPoints);
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});
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it('parses XYZ linestring', function () {
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const xyz = polyline.encodeDeltas(
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[38.5, -120.2, 100, 40.7, -120.95, 200, 43.252, -126.453, 20],
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3
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);
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const format = new Polyline({
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geometryLayout: 'XYZ',
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});
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const geometry = format.readGeometry(xyz);
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expect(geometry.getLayout()).to.eql('XYZ');
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expect(geometry.getCoordinates()).to.eql([
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[-120.2, 38.5, 100],
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[-120.95, 40.7, 200],
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[-126.453, 43.252, 20],
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]);
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});
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it('transforms and returns the expected geometry', function () {
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const geometry = format.readGeometry(encodedFlatPoints, {
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featureProjection: 'EPSG:3857',
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});
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expect(geometry).to.be.an(LineString);
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expect(geometry.getCoordinates()).to.eql(points3857);
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});
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});
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describe('#readProjection', function () {
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it('returns the expected projection', function () {
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const projection = format.readProjection(encodedFlatPoints);
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expect(projection).to.be(getProjection('EPSG:4326'));
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});
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});
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describe('#writeFeature', function () {
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it('returns the expected text', function () {
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const feature = new Feature(new LineString(points));
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expect(format.writeFeature(feature)).to.be(encodedFlatPoints);
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});
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it('transforms and returns the expected text', function () {
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const feature = new Feature(new LineString(points3857));
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expect(
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format.writeFeature(feature, {
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featureProjection: 'EPSG:3857',
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})
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).to.be(encodedFlatPoints);
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});
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});
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describe('#writeFeature', function () {
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it('returns the expected text', function () {
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const features = [new Feature(new LineString(points))];
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expect(format.writeFeatures(features)).to.be(encodedFlatPoints);
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});
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it('transforms and returns the expected text', function () {
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const features = [new Feature(new LineString(points3857))];
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expect(
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format.writeFeatures(features, {
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featureProjection: 'EPSG:3857',
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})
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).to.be(encodedFlatPoints);
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});
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});
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describe('#writeGeometry', function () {
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it('returns the expected text', function () {
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const geometry = new LineString(points);
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expect(format.writeGeometry(geometry)).to.be(encodedFlatPoints);
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});
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it('transforms and returns the expected text', function () {
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const geometry = new LineString(points3857);
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expect(
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format.writeGeometry(geometry, {
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featureProjection: 'EPSG:3857',
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})
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).to.be(encodedFlatPoints);
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});
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});
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});
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