203 lines
6.5 KiB
JavaScript
203 lines
6.5 KiB
JavaScript
goog.provide('ol.test.geom.SharedVertices');
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describe('ol.geom.SharedVertices', function() {
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describe('constructor', function() {
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it('creates an instance', function() {
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var vertices = new ol.geom.SharedVertices();
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expect(vertices).to.be.a(ol.geom.SharedVertices);
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});
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it('accepts options', function() {
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var vertices = new ol.geom.SharedVertices({
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dimension: 4,
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offset: [1, 2, 3, 4]
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});
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expect(vertices.getDimension()).to.be(4);
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expect(vertices.getOffset()).to.eql([1, 2, 3, 4]);
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});
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});
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describe('offset option', function() {
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it('offsets the internally stored vertex coordinates', function() {
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var vertices = new ol.geom.SharedVertices({offset: [3, -1]});
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vertices.add([[3, -1], [0, 0]]);
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vertices.add([[10, 20]]);
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expect(vertices.coordinates).to.eql([0, 0, -3, 1, 7, 21]);
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});
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});
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describe('#add()', function() {
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it('adds vertex arrays to the shared coordinates', function() {
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var vertices = new ol.geom.SharedVertices();
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expect(vertices.coordinates.length).to.be(0);
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vertices.add([[1, 2], [3, 4]]);
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expect(vertices.coordinates).to.eql([1, 2, 3, 4]);
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vertices.add([[5, 6]]);
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expect(vertices.coordinates).to.eql([1, 2, 3, 4, 5, 6]);
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});
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it('returns an identifier for coordinate access', function() {
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var vertices = new ol.geom.SharedVertices();
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var id = vertices.add([[1, 2], [3, 4]]);
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expect(typeof id).to.be('number');
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});
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it('returns the index of the added vertices', function() {
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var vertices = new ol.geom.SharedVertices();
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var first = vertices.add([[1, 2]]);
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var second = vertices.add([[3, 4], [5, 6]]);
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var third = vertices.add([[7, 8], [9, 10], [11, 12]]);
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expect(vertices.coordinates).to.eql(
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[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]);
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expect(first).to.be(0);
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expect(second).to.be(1);
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expect(third).to.be(2);
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});
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});
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describe('#get()', function() {
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it('provides access to vertex coordinates', function() {
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var vertices = new ol.geom.SharedVertices();
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var first = vertices.add([[1, 2], [3, 4]]);
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var second = vertices.add([[5, 6]]);
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expect(vertices.get(first, 0, 0)).to.be(1);
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expect(vertices.get(first, 0, 1)).to.be(2);
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expect(vertices.get(first, 1, 0)).to.be(3);
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expect(vertices.get(first, 1, 1)).to.be(4);
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expect(vertices.get(second, 0, 0)).to.be(5);
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expect(vertices.get(second, 0, 1)).to.be(6);
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});
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it('works for non-2d vertices', function() {
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var vertices = new ol.geom.SharedVertices({dimension: 3});
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var id = vertices.add([[1, 2, 3], [4, 5, 6]]);
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expect(vertices.get(id, 0, 0)).to.be(1);
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expect(vertices.get(id, 0, 1)).to.be(2);
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expect(vertices.get(id, 0, 2)).to.be(3);
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expect(vertices.get(id, 1, 0)).to.be(4);
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expect(vertices.get(id, 1, 1)).to.be(5);
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expect(vertices.get(id, 1, 2)).to.be(6);
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});
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it('works when an offset is provided', function() {
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var vertices = new ol.geom.SharedVertices({offset: [3, 3]});
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var id = vertices.add([[1, 2], [3, 4], [5, 6]]);
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expect(vertices.get(id, 0, 0)).to.be(1);
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expect(vertices.get(id, 0, 1)).to.be(2);
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expect(vertices.get(id, 1, 0)).to.be(3);
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expect(vertices.get(id, 1, 1)).to.be(4);
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expect(vertices.get(id, 2, 0)).to.be(5);
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expect(vertices.get(id, 2, 1)).to.be(6);
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});
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});
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describe('#getCount()', function() {
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it('returns the length of an identified vertex array', function() {
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var vertices = new ol.geom.SharedVertices();
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var first = vertices.add([[2, 3], [3, 4], [4, 5]]);
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var second = vertices.add([[5, 6], [6, 6]]);
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expect(vertices.getCount(first)).to.be(3);
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expect(vertices.getCount(second)).to.be(2);
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});
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});
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describe('#getCounts()', function() {
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it('returns the counts array', function() {
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var vertices = new ol.geom.SharedVertices();
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vertices.add([[2, 3], [3, 4], [4, 5]]);
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vertices.add([[5, 6], [6, 6]]);
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vertices.add([[7, 8]]);
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expect(vertices.getCounts()).to.eql([3, 2, 1]);
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});
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});
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describe('#getDimension()', function() {
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it('returns 2 by default', function() {
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var vertices = new ol.geom.SharedVertices();
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expect(vertices.getDimension()).to.be(2);
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});
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it('returns the dimension provided to the constructor', function() {
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var vertices = new ol.geom.SharedVertices({dimension: 10});
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expect(vertices.getDimension()).to.be(10);
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});
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});
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describe('#getOffset()', function() {
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it('returns null by default', function() {
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var vertices = new ol.geom.SharedVertices();
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expect(vertices.getOffset()).to.be(null);
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});
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it('returns the offset provided to the constructor', function() {
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var vertices = new ol.geom.SharedVertices({offset: [1, 2]});
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expect(vertices.getOffset()).to.eql([1, 2]);
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});
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});
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describe('#getStart()', function() {
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it('returns the start index of an identified vertex array', function() {
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var vertices = new ol.geom.SharedVertices();
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var first = vertices.add([[2, 3], [4, 5], [6, 7]]);
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var second = vertices.add([[8, 9], [10, 11]]);
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var third = vertices.add([[12, 13]]);
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expect(vertices.coordinates).to.eql(
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[2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]);
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// 0 1 2 3 4 5 6 7 8 9 10 11
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expect(vertices.getStart(first)).to.be(0);
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expect(vertices.getStart(second)).to.be(6);
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expect(vertices.getStart(third)).to.be(10);
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});
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});
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describe('#getStarts()', function() {
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it('returns the counts array', function() {
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var vertices = new ol.geom.SharedVertices();
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vertices.add([[2, 3], [3, 4], [4, 5]]);
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vertices.add([[5, 6], [6, 6]]);
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vertices.add([[7, 8]]);
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expect(vertices.getStarts()).to.eql([0, 6, 10]);
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});
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});
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describe('#coordinates', function() {
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it('is a flat array of all coordinate values', function() {
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var vertices = new ol.geom.SharedVertices();
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vertices.add([[1, 2], [3, 4]]);
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vertices.add([[5, 6]]);
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vertices.add([[7, 8], [9, 10], [11, 12]]);
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expect(vertices.coordinates).to.eql(
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[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]);
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});
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it('is not reassigned', function() {
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var vertices = new ol.geom.SharedVertices();
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vertices.add([[1, 2], [3, 4]]);
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var coordinates = vertices.coordinates;
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vertices.add([[5, 6]]);
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expect(vertices.coordinates).to.be(coordinates);
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});
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});
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});
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goog.require('ol.geom.SharedVertices');
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