bf8c12d9f7
Add a parser (read/write) for OGC Well-Known-Text (WKT). It deals with geometries only, not with features, mostly because WKT can only contain a single geometry (or geometry collection). This can later on be used to serialize and deserialize geometries in ol3.
112 lines
4.9 KiB
JavaScript
112 lines
4.9 KiB
JavaScript
goog.provide('ol.test.parser.WKT');
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describe('ol.parser.WKT', function() {
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var parser = new ol.parser.WKT();
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it('Point read / written correctly', function() {
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var wkt = 'POINT(30 10)';
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var geom = parser.read(wkt);
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expect(geom.getCoordinates()).to.eql([30, 10]);
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expect(parser.write(geom)).to.eql(wkt);
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});
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it('MultiPoint read / written correctly', function() {
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// there are two forms to test
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var wkt = 'MULTIPOINT((10 40),(40 30),(20 20),(30 10))';
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var geom = parser.read(wkt);
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expect(geom.components.length).to.eql(4);
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expect(geom.components[0].getCoordinates()).to.eql([10, 40]);
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expect(geom.components[1].getCoordinates()).to.eql([40, 30]);
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expect(geom.components[2].getCoordinates()).to.eql([20, 20]);
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expect(geom.components[3].getCoordinates()).to.eql([30, 10]);
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expect(parser.write(geom)).to.eql(wkt);
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wkt = 'MULTIPOINT (10 40, 40 30, 20 20, 30 10)';
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geom = parser.read(wkt);
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expect(geom.components.length).to.eql(4);
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expect(geom.components[0].getCoordinates()).to.eql([10, 40]);
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expect(geom.components[1].getCoordinates()).to.eql([40, 30]);
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expect(geom.components[2].getCoordinates()).to.eql([20, 20]);
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expect(geom.components[3].getCoordinates()).to.eql([30, 10]);
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});
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it('LineString read / written correctly', function() {
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var wkt = 'LINESTRING(30 10,10 30,40 40)';
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var geom = parser.read(wkt);
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expect(geom.getType()).to.eql(ol.geom.GeometryType.LINESTRING);
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expect(geom.getCoordinates()).to.eql([[30, 10], [10, 30], [40, 40]]);
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expect(parser.write(geom)).to.eql(wkt);
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});
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it('MultiLineString read / written correctly', function() {
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var wkt = 'MULTILINESTRING((10 10,20 20,10 40),' +
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'(40 40,30 30,40 20,30 10))';
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var geom = parser.read(wkt);
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expect(geom.getType()).to.eql(ol.geom.GeometryType.MULTILINESTRING);
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expect(geom.components.length).to.eql(2);
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expect(geom.components[0].getType()).to.eql(
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ol.geom.GeometryType.LINESTRING);
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expect(geom.components[0].getCoordinates()).to.eql(
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[[10, 10], [20, 20], [10, 40]]);
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expect(parser.write(geom)).to.eql(wkt);
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});
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it('Polygon read / written correctly', function() {
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var wkt = 'POLYGON((30 10,10 20,20 40,40 40,30 10))';
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var geom = parser.read(wkt);
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expect(geom.getType()).to.eql(ol.geom.GeometryType.POLYGON);
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expect(geom.rings.length).to.eql(1);
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expect(geom.rings[0].getType()).to.eql(ol.geom.GeometryType.LINEARRING);
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expect(geom.rings[0].getCoordinates()).to.eql(
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[[30, 10], [10, 20], [20, 40], [40, 40], [30, 10]]);
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expect(parser.write(geom)).to.eql(wkt);
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wkt = 'POLYGON((35 10,10 20,15 40,45 45,35 10),(20 30,35 35,30 20,20 30))';
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geom = parser.read(wkt);
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expect(geom.getType()).to.eql(ol.geom.GeometryType.POLYGON);
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expect(geom.rings.length).to.eql(2);
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expect(geom.rings[0].getType()).to.eql(ol.geom.GeometryType.LINEARRING);
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expect(geom.rings[1].getType()).to.eql(ol.geom.GeometryType.LINEARRING);
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expect(geom.rings[0].getCoordinates()).to.eql(
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[[35, 10], [10, 20], [15, 40], [45, 45], [35, 10]]);
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expect(geom.rings[1].getCoordinates()).to.eql(
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[[20, 30], [35, 35], [30, 20], [20, 30]]);
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expect(parser.write(geom)).to.eql(wkt);
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});
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it('MultiPolygon read / written correctly', function() {
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var wkt = 'MULTIPOLYGON(((40 40,20 45,45 30,40 40)),' +
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'((20 35,45 20,30 5,10 10,10 30,20 35),(30 20,20 25,20 15,30 20)))';
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var geom = parser.read(wkt);
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expect(geom.getType()).to.eql(ol.geom.GeometryType.MULTIPOLYGON);
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expect(geom.components.length).to.eql(2);
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expect(geom.components[0].getType()).to.eql(ol.geom.GeometryType.POLYGON);
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expect(geom.components[1].getType()).to.eql(ol.geom.GeometryType.POLYGON);
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expect(geom.components[0].rings.length).to.eql(1);
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expect(geom.components[1].rings.length).to.eql(2);
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expect(geom.components[0].rings[0].getCoordinates()).to.eql(
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[[40, 40], [20, 45], [45, 30], [40, 40]]);
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expect(geom.components[1].rings[0].getCoordinates()).to.eql(
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[[20, 35], [45, 20], [30, 5], [10, 10], [10, 30], [20, 35]]);
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expect(geom.components[1].rings[1].getCoordinates()).to.eql(
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[[30, 20], [20, 25], [20, 15], [30, 20]]);
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expect(parser.write(geom)).to.eql(wkt);
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});
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it('GeometryCollection read / written correctly', function() {
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var wkt = 'GEOMETRYCOLLECTION(POINT(4 6),LINESTRING(4 6,7 10))';
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var geom = parser.read(wkt);
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expect(geom.components.length).to.eql(2);
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expect(geom.getType()).to.eql(ol.geom.GeometryType.GEOMETRYCOLLECTION);
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expect(geom.components[0].getType()).to.eql(ol.geom.GeometryType.POINT);
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expect(geom.components[1].getType()).to.eql(
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ol.geom.GeometryType.LINESTRING);
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expect(geom.components[0].getCoordinates()).to.eql([4, 6]);
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expect(geom.components[1].getCoordinates()).to.eql([[4, 6], [7, 10]]);
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expect(parser.write(geom)).to.eql(wkt);
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});
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});
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goog.require('ol.geom.GeometryType');
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goog.require('ol.parser.WKT');
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