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fs = require('fs'),
Protobuf = require('pbf'),
VectorTile = require('..').VectorTile,
VectorTileLayer = require('..').VectorTileLayer,
VectorTileFeature = require('..').VectorTileFeature;
function approximateDeepEqual(a, b, epsilon) {
epsilon = epsilon || 1e-6;
if (typeof a !== typeof b)
return false;
if (typeof a === 'number')
return Math.abs(a - b) < epsilon;
if (a === null || typeof a !== 'object')
return a === b;
var ka = Object.keys(a);
var kb = Object.keys(b);
if (ka.length != kb.length)
return false;
ka.sort();
kb.sort();
for (var i = 0; i < ka.length; i++)
if (ka[i] != kb[i] || !approximateDeepEqual(a[ka[i]], b[ka[i]], epsilon))
return false;
return true;
}
test('parsing vector tiles', function(t) {
var data = fs.readFileSync(__dirname + '/fixtures/14-8801-5371.vector.pbf');
t.test('should have all layers', function(t) {
var tile = new VectorTile(new Protobuf(data));
t.deepEqual(Object.keys(tile.layers), [
'landuse', 'waterway', 'water', 'barrier_line', 'building',
'landuse_overlay', 'tunnel', 'road', 'bridge', 'place_label',
'water_label', 'poi_label', 'road_label', 'waterway_label' ]);
t.end();
});
t.test('should extract the tags of a feature', function(t) {
var tile = new VectorTile(new Protobuf(data));
t.equal(tile.layers.poi_label.length, 558);
var park = tile.layers.poi_label.feature(11);
t.deepEqual(park.bbox(), [ 3898, 1731, 3898, 1731 ]);
t.throws(function() {
var park = tile.layers.poi_label.feature(1e9);
}, 'throws on reading a feature out of bounds');
t.equal(park.id, 3000003150561);
t.equal(park.properties.name, 'Mauerpark');
t.equal(park.properties.type, 'Park');
// Check point geometry
t.deepEqual(park.loadGeometry(), [ [ { x: 3898, y: 1731 } ] ]);
// Check line geometry
t.deepEqual(tile.layers.road.feature(656).loadGeometry(), [ [ { x: 1988, y: 306 }, { x: 1808, y: 321 }, { x: 1506, y: 347 } ] ]);
t.end();
});
t.test('changing first point of a polygon should not change last point', function(t) {
var tile = new VectorTile(new Protobuf(data));
var building = tile.layers.building.feature(0).loadGeometry();
t.deepEqual(building, [ [ { x: 2039, y: -32 }, { x: 2035, y: -31 }, { x: 2032, y: -31 }, { x: 2032, y: -32 }, { x: 2039, y: -32 } ] ]);
building[0][0].x = 1;
building[0][0].y = 2;
building[0][1].x = 3;
building[0][1].y = 4;
t.deepEqual(building, [ [ { x: 1, y: 2 }, { x: 3, y: 4 }, { x: 2032, y: -31 }, { x: 2032, y: -32 }, { x: 2039, y: -32 } ] ]);
t.end();
});
t.test('toGeoJSON', function(t) {
var tile = new VectorTile(new Protobuf(data));
t.ok(approximateDeepEqual(tile.layers.poi_label.feature(11).toGeoJSON(8801, 5371, 14), {
type: 'Feature',
id: 3000003150561,
properties: {
localrank: 1,
maki: 'park',
name: 'Mauerpark',
name_de: 'Mauerpark',
name_en: 'Mauerpark',
name_es: 'Mauerpark',
name_fr: 'Mauerpark',
osm_id: 3000003150561,
ref: '',
scalerank: 2,
type: 'Park'
},
geometry: {
type: 'Point',
coordinates: [13.402258157730103, 52.54398925380624]
}
}));
t.ok(approximateDeepEqual(tile.layers.bridge.feature(0).toGeoJSON(8801, 5371, 14), {
type: 'Feature',
id: 238162948,
properties: {
class: 'service',
oneway: 0,
osm_id: 238162948,
type: 'service'
},
geometry: {
type: 'LineString',
coordinates: [[13.399457931518555, 52.546334844036416], [13.399441838264465, 52.546504478525016]]
}
}));
t.ok(approximateDeepEqual(tile.layers.building.feature(0).toGeoJSON(8801, 5371, 14), {
type: 'Feature',
id: 1000267229912,
properties: {
osm_id: 1000267229912
},
geometry: {
type: 'Polygon',
coordinates: [[[13.392285704612732, 52.54974045706258], [13.392264246940613, 52.549737195107554],
[13.392248153686523, 52.549737195107554], [13.392248153686523, 52.54974045706258],
[13.392285704612732, 52.54974045706258]]]
}
}));
function geoJSONFromFixture(name) {
var tile = new VectorTile(new Protobuf(fs.readFileSync(__dirname + '/fixtures/' + name + '.pbf')));
return tile.layers.geojson.feature(0).toGeoJSON(0, 0, 0);
}
// https://github.com/mapbox/vector-tile-spec/issues/30
t.ok(approximateDeepEqual(geoJSONFromFixture("singleton-multi-point").geometry, {
type: 'Point',
coordinates: [1, 2]
}, 1e-1));
t.ok(approximateDeepEqual(geoJSONFromFixture("singleton-multi-line").geometry, {
type: 'LineString',
coordinates: [[1, 2], [3, 4]]
}, 1e-1));
t.ok(approximateDeepEqual(geoJSONFromFixture("singleton-multi-polygon").geometry, {
type: 'Polygon',
coordinates: [[[1, 0], [0, 0], [1, 1], [1, 0]]]
}, 1e-1));
t.ok(approximateDeepEqual(geoJSONFromFixture("multi-point").geometry, {
type: 'MultiPoint',
coordinates: [[1, 2], [3, 4]]
}, 1e-1));
t.ok(approximateDeepEqual(geoJSONFromFixture("multi-line").geometry, {
type: 'MultiLineString',
coordinates: [[[1, 2], [3, 4]], [[5, 6], [7, 8]]]
}, 1e-1));
t.ok(approximateDeepEqual(geoJSONFromFixture("multi-polygon").geometry, {
type: 'MultiPolygon',
coordinates: [[[[1, 0], [0, 0], [1, 1], [1, 0]]], [[[-1, -1], [-1, 0], [0, 0], [-1, -1]]]]
}, 1e-1));
// https://github.com/mapbox/vector-tile-js/issues/32
t.ok(approximateDeepEqual(geoJSONFromFixture("polygon-with-inner").geometry, {
type: 'Polygon',
coordinates: [[[2, -2], [-2, -2], [-2, 2], [2, 2], [2, -2]], [[-1, 1], [-1, -1], [1, -1], [1, 1], [-1, 1]]]
}, 1e-1));
t.ok(approximateDeepEqual(geoJSONFromFixture("stacked-multipolygon").geometry, {
type: 'MultiPolygon',
coordinates: [[[[2, -2], [-2, -2], [-2, 2], [2, 2], [2, -2]]], [[[1, -1], [-1, -1], [-1, 1], [1, 1], [1, -1]]]]
}, 1e-1));
t.end();
})
});
test('VectorTileLayer', function(t) {
var emptyLayer = new VectorTileLayer(new Protobuf(new Buffer([])));
t.ok(emptyLayer, 'can be created with no values');
t.end();
});
test('VectorTileFeature', function(t) {
var emptyFeature = new VectorTileFeature(new Protobuf(new Buffer([])));
t.ok(emptyFeature, 'can be created with no values');
t.ok(Array.isArray(VectorTileFeature.types));
t.deepEqual(VectorTileFeature.types, ['Unknown', 'Point', 'LineString', 'Polygon']);
t.end();
});
test('https://github.com/mapbox/vector-tile-js/issues/15', function(t) {
var data = fs.readFileSync(__dirname + '/fixtures/lots-of-tags.vector.pbf');
var tile = new VectorTile(new Protobuf(data));
t.ok(tile.layers["stuttgart-rails"].feature(0));
t.end();
});
test('https://github.com/mapbox/mapbox-gl-js/issues/1019', function(t) {
var data = fs.readFileSync(__dirname + '/fixtures/12-1143-1497.vector.pbf');
var tile = new VectorTile(new Protobuf(data));
t.ok(tile.layers["water"].feature(1).loadGeometry());
t.end();
});
test('https://github.com/mapbox/vector-tile-js/issues/60', function(t) {
var data = fs.readFileSync(__dirname + '/fixtures/multipolygon-with-closepath.pbf');
var tile = new VectorTile(new Protobuf(data));
for (var id in tile.layers) {
var layer = tile.layers[id];
for (var i = 0; i < layer.length; i++) {
layer.feature(i).loadGeometry();
}
}
t.end();
});
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