1100 lines
36 KiB
JavaScript
1100 lines
36 KiB
JavaScript
goog.provide('ol.test.TileGrid');
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describe('ol.tilegrid.TileGrid', function() {
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var extent;
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var resolutions;
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var origin;
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var origins;
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var tileSize;
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beforeEach(function() {
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resolutions = [1000, 500, 250, 100];
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extent = [0, 0, 100000, 100000];
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origin = [0, 0];
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origins = [];
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tileSize = 100;
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});
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describe('create valid', function() {
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it('does not throw an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: resolutions,
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origin: origin,
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tileSize: tileSize
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});
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}).not.to.throwException();
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});
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});
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describe('create with duplicate resolutions', function() {
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it('throws an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 50, 25, 10],
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origin: origin,
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tileSize: tileSize
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});
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}).to.throwException();
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});
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});
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describe('create with out of order resolutions', function() {
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it('throws an exception', function() {
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var resolutions = [100, 25, 50, 10];
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: resolutions,
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origin: origin,
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tileSize: tileSize
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});
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}).to.throwException();
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});
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});
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describe('create with multiple origins', function() {
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it('does not throw an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 25, 10],
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origins: [origin, origin, origin, origin],
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tileSize: tileSize
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});
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}).not.to.throwException();
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});
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});
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describe('create with both origin and multiple origins', function() {
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it('throws an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 25, 10],
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origins: [origin, origin, origin, origin],
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origin: origin,
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tileSize: tileSize
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});
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}).to.throwException();
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});
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});
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describe('create with too few origins', function() {
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it('throws an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 25, 10],
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origins: [origin, origin, origin],
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tileSize: tileSize
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});
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}).to.throwException();
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});
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});
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describe('create with too many origins', function() {
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it('throws an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 25, 10],
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origins: [origin, origin, origin, origin, origin],
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tileSize: tileSize
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});
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}).to.throwException();
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});
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});
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describe('create with multiple tileSizes', function() {
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it('does not throw an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 25, 10],
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tileSizes: [tileSize, tileSize, tileSize, tileSize],
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origin: origin
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});
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}).not.to.throwException();
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});
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});
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describe('create with both tileSize and multiple tileSizes', function() {
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it('throws an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 25, 10],
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tileSizes: [tileSize, tileSize, tileSize, tileSize],
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tileSize: tileSize,
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origin: origin
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});
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}).to.throwException();
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});
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});
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describe('create with too few tileSizes', function() {
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it('throws an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 25, 10],
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tileSizes: [tileSize, tileSize, tileSize],
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origin: origin
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});
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}).to.throwException();
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});
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});
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describe('create with too many tileSizes', function() {
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it('throws an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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resolutions: [100, 50, 25, 10],
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tileSizes: [tileSize, tileSize, tileSize, tileSize, tileSize],
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origin: origin
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});
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}).to.throwException();
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});
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});
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describe('create with extent exceeding tile ranges', function() {
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it('throws an exception', function() {
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expect(function() {
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return new ol.tilegrid.TileGrid({
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extent: [10, 20, 30, 40],
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sizes: [[1, 1]],
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tileSize: 10,
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resolutions: [1]
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});
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}).to.throwException();
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expect(function() {
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return new ol.tilegrid.TileGrid({
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extent: [10, 20, 30, 40],
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origin: [10, 40], // top-left origin
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sizes: [[3, 3]], // would have to be [[3, -3]] for this to not throw
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tileSize: 10,
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resolutions: [1]
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});
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}).to.throwException();
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});
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});
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describe('create with origin', function() {
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var tileGrid;
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beforeEach(function() {
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tileGrid = new ol.tilegrid.TileGrid({
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origin: [10, 20],
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tileSize: 10,
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resolutions: [1]
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});
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});
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it('returns the configured origin', function() {
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expect(tileGrid.getOrigin()).to.eql([10, 20]);
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});
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it('returns null for an unknown extent', function() {
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expect(tileGrid.getExtent()).to.equal(null);
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});
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it('returns null for an unknown full tile range', function() {
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expect(tileGrid.getFullTileRange(0)).to.equal(null);
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});
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});
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describe('create with extent', function() {
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var tileGrid;
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beforeEach(function() {
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tileGrid = new ol.tilegrid.TileGrid({
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extent: [10, 20, 30, 40],
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tileSize: 10,
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resolutions: [1]
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});
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});
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it('assumes bottom left corner of extent as origin', function() {
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expect(tileGrid.getOrigin()).to.eql([10, 20]);
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});
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it('calculates full tile ranges from extent', function() {
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var fullTileRange = tileGrid.getFullTileRange(0);
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expect(fullTileRange.minX).to.equal(0);
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expect(fullTileRange.maxX).to.equal(1);
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expect(fullTileRange.minY).to.equal(0);
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expect(fullTileRange.maxY).to.equal(1);
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});
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});
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describe('create with extent and sizes', function() {
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var tileGrid;
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beforeEach(function() {
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tileGrid = new ol.tilegrid.TileGrid({
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extent: [10, 20, 30, 40],
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sizes: [[3, 3]],
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tileSize: 10,
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resolutions: [1]
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});
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});
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it('returns the configured extent', function() {
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expect(tileGrid.getExtent()).to.eql([10, 20, 30, 40]);
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});
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it('calculates full tile ranges from sizes', function() {
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var fullTileRange = tileGrid.getFullTileRange(0);
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expect(fullTileRange.minX).to.equal(0);
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expect(fullTileRange.maxX).to.equal(2);
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expect(fullTileRange.minY).to.equal(0);
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expect(fullTileRange.maxY).to.equal(2);
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});
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});
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describe('create with top-left origin and sizes', function() {
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var tileGrid;
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beforeEach(function() {
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tileGrid = new ol.tilegrid.TileGrid({
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origin: [10, 40],
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sizes: [[3, -3]],
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tileSize: 10,
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resolutions: [1]
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});
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});
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it('calculates correct minX and maxX for negative heights', function() {
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var fullTileRange = tileGrid.getFullTileRange(0);
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expect(fullTileRange.minY).to.equal(-3);
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expect(fullTileRange.maxY).to.equal(-1);
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});
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});
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describe('create with extent and origin', function() {
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it('uses both origin and extent', function() {
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var tileGrid = new ol.tilegrid.TileGrid({
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origin: [0, 0],
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extent: [10, 20, 30, 40],
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tileSize: 10,
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resolutions: [1]
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});
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expect(tileGrid.getOrigin()).to.eql([0, 0]);
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expect(tileGrid.getExtent()).to.eql([10, 20, 30, 40]);
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});
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});
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describe('createForExtent', function() {
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it('allows creation of tile grid from extent', function() {
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var extent = ol.extent.createOrUpdate(-100, -100, 100, 100);
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var grid = ol.tilegrid.createForExtent(extent);
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expect(grid).to.be.a(ol.tilegrid.TileGrid);
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var resolutions = grid.getResolutions();
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expect(resolutions.length).to.be(ol.DEFAULT_MAX_ZOOM + 1);
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expect(grid.getOrigin()).to.eql([-100, -100]);
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});
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});
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describe('createForProjection', function() {
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it('allows easier creation of a tile grid', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.createForProjection(projection);
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expect(grid).to.be.a(ol.tilegrid.TileGrid);
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var resolutions = grid.getResolutions();
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expect(resolutions.length).to.be(ol.DEFAULT_MAX_ZOOM + 1);
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});
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it('accepts a number of zoom levels', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.createForProjection(projection, 18);
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expect(grid).to.be.a(ol.tilegrid.TileGrid);
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var resolutions = grid.getResolutions();
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expect(resolutions.length).to.be(19);
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});
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it('accepts a big number of zoom levels', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.createForProjection(projection, 23);
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expect(grid).to.be.a(ol.tilegrid.TileGrid);
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var resolutions = grid.getResolutions();
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expect(resolutions.length).to.be(24);
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});
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it('works for projections unknown to the client', function() {
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var projection = new ol.proj.Projection(
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{code: 'EPSG:31287', units: 'm'});
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var grid = ol.tilegrid.createForProjection(projection);
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var resolutions = grid.getResolutions();
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expect(resolutions[5]).to.be(
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360 * ol.proj.METERS_PER_UNIT[ol.proj.Units.DEGREES] /
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ol.DEFAULT_TILE_SIZE / Math.pow(2, 5));
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});
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it('assumes origin is bottom-left', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.createForProjection(projection);
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var origin = grid.getOrigin();
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var half = ol.proj.EPSG3857.HALF_SIZE;
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expect(origin).to.eql([-half, -half]);
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});
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it('accepts bottom-left as corner', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.createForProjection(
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projection, undefined, undefined, ol.extent.Corner.BOTTOM_LEFT);
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var origin = grid.getOrigin();
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var half = ol.proj.EPSG3857.HALF_SIZE;
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expect(origin).to.eql([-half, -half]);
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});
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it('accepts bottom-right as corner', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.createForProjection(
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projection, undefined, undefined, ol.extent.Corner.BOTTOM_RIGHT);
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var origin = grid.getOrigin();
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var half = ol.proj.EPSG3857.HALF_SIZE;
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expect(origin).to.eql([half, -half]);
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});
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it('accepts top-left as corner', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.createForProjection(
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projection, undefined, undefined, ol.extent.Corner.TOP_LEFT);
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var origin = grid.getOrigin();
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var half = ol.proj.EPSG3857.HALF_SIZE;
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expect(origin).to.eql([-half, half]);
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});
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it('accepts top-right as corner', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.createForProjection(
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projection, undefined, undefined, ol.extent.Corner.TOP_RIGHT);
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var origin = grid.getOrigin();
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var half = ol.proj.EPSG3857.HALF_SIZE;
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expect(origin).to.eql([half, half]);
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});
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});
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describe('createOriginTopLeftTileCoordTransform', function() {
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it('transforms y to -y-1 for top-left origins', function() {
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var tileGrid = new ol.tilegrid.TileGrid({
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origin: [10, 40],
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sizes: [[2, -2], [4, -4]],
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resolutions: [1, 0.5],
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tileSize: 10
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});
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var transformFn =
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ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid);
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expect(transformFn([0, 0, -2])).to.eql([0, 0, 1]);
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expect(transformFn([0, 0, -1])).to.eql([0, 0, 0]);
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expect(transformFn([1, 0, -4])).to.eql([1, 0, 3]);
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expect(transformFn([1, 0, -1])).to.eql([1, 0, 0]);
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});
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it('transforms y to -y-1 when origin corner is not specified', function() {
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var tileGrid1 = new ol.tilegrid.TileGrid({
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origin: [10, 20],
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resolutions: [1, 0.5],
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tileSize: 10
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});
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var tileGrid = new ol.tilegrid.TileGrid({
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origin: [10, 40],
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resolutions: [1, 0.5],
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tileSize: 10
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});
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var transformFn1 =
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ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid);
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var transformFn2 =
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ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid1);
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expect(transformFn1([0, 0, -2])).to.eql([0, 0, 1]);
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expect(transformFn2([0, 0, -2])).to.eql([0, 0, 1]);
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expect(transformFn1([0, 0, -1])).to.eql([0, 0, 0]);
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expect(transformFn2([0, 0, -1])).to.eql([0, 0, 0]);
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expect(transformFn1([1, 0, -4])).to.eql([1, 0, 3]);
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expect(transformFn2([1, 0, -4])).to.eql([1, 0, 3]);
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expect(transformFn1([1, 0, -1])).to.eql([1, 0, 0]);
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expect(transformFn2([1, 0, -1])).to.eql([1, 0, 0]);
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});
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it('transforms y to height-y-1 for bottom-left origins', function() {
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var tileGrid1 = new ol.tilegrid.TileGrid({
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extent: [10, 20, 30, 40],
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resolutions: [1, 0.5],
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tileSize: 10
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});
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var tileGrid2 = new ol.tilegrid.TileGrid({
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origin: [10, 20],
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sizes: [[2, 2], [4, 4]],
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resolutions: [1, 0.5],
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tileSize: 10
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});
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var transformFn1 =
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ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid1);
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var transformFn2 =
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ol.tilegrid.createOriginTopLeftTileCoordTransform(tileGrid2);
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expect(tileGrid1.getFullTileRange(0).getHeight()).to.equal(2);
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expect(transformFn1([0, 0, 0])).to.eql([0, 0, 1]);
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expect(transformFn2([0, 0, 0])).to.eql([0, 0, 1]);
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expect(transformFn1([0, 0, 1])).to.eql([0, 0, 0]);
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expect(transformFn2([0, 0, 1])).to.eql([0, 0, 0]);
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expect(tileGrid1.getFullTileRange(1).getHeight()).to.equal(4);
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expect(transformFn1([1, 0, 0])).to.eql([1, 0, 3]);
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expect(transformFn2([1, 0, 0])).to.eql([1, 0, 3]);
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expect(transformFn1([1, 0, 3])).to.eql([1, 0, 0]);
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expect(transformFn2([1, 0, 3])).to.eql([1, 0, 0]);
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});
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});
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describe('createXYZ()', function() {
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it('uses defaults', function() {
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var tileGrid = ol.tilegrid.createXYZ();
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expect(tileGrid.getExtent()).to.eql(
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ol.proj.get('EPSG:3857').getExtent());
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expect(tileGrid.getMinZoom()).to.equal(0);
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expect(tileGrid.getMaxZoom()).to.equal(ol.DEFAULT_MAX_ZOOM);
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expect(tileGrid.getTileSize()).to.equal(ol.DEFAULT_TILE_SIZE);
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});
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it('respects configuration options', function() {
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var tileGrid = ol.tilegrid.createXYZ({
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extent: [10, 20, 30, 40],
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minZoom: 1,
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maxZoom: 2,
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tileSize: 128
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});
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expect(tileGrid.getExtent()).to.eql([10, 20, 30, 40]);
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expect(tileGrid.getMinZoom()).to.equal(1);
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expect(tileGrid.getMaxZoom()).to.equal(2);
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expect(tileGrid.getTileSize()).to.equal(128);
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});
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});
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describe('getForProjection', function() {
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it('gets the default tile grid for a projection', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.getForProjection(projection);
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expect(grid).to.be.a(ol.tilegrid.TileGrid);
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var resolutions = grid.getResolutions();
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expect(resolutions.length).to.be(ol.DEFAULT_MAX_ZOOM + 1);
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expect(grid.getTileSize()).to.eql(256);
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});
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it('stores the default tile grid on a projection', function() {
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var projection = ol.proj.get('EPSG:3857');
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var grid = ol.tilegrid.getForProjection(projection);
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var gridAgain = ol.tilegrid.getForProjection(projection);
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expect(grid).to.be(gridAgain);
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});
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});
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describe('#getTileCoordChildTileRange()', function() {
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var tileGrid;
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beforeEach(function() {
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tileGrid = ol.tilegrid.createForExtent(
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ol.proj.get('EPSG:3857').getExtent(), 22);
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});
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it('returns the tile range for one zoom level deeper', function() {
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var range;
|
|
|
|
range = tileGrid.getTileCoordChildTileRange([0, 0, 0]);
|
|
expect(range.minX).to.be(0);
|
|
expect(range.maxX).to.be(1);
|
|
expect(range.minY).to.be(0);
|
|
expect(range.maxY).to.be(1);
|
|
|
|
range = tileGrid.getTileCoordChildTileRange([0, 1, 0]);
|
|
expect(range.minX).to.be(2);
|
|
expect(range.maxX).to.be(3);
|
|
expect(range.minY).to.be(0);
|
|
expect(range.maxY).to.be(1);
|
|
|
|
range = tileGrid.getTileCoordChildTileRange([0, 0, 1]);
|
|
expect(range.minX).to.be(0);
|
|
expect(range.maxX).to.be(1);
|
|
expect(range.minY).to.be(2);
|
|
expect(range.maxY).to.be(3);
|
|
|
|
range = tileGrid.getTileCoordChildTileRange([0, -1, 0]);
|
|
expect(range.minX).to.be(-2);
|
|
expect(range.maxX).to.be(-1);
|
|
expect(range.minY).to.be(0);
|
|
expect(range.maxY).to.be(1);
|
|
|
|
range = tileGrid.getTileCoordChildTileRange([0, 0, -1]);
|
|
expect(range.minX).to.be(0);
|
|
expect(range.maxX).to.be(1);
|
|
expect(range.minY).to.be(-2);
|
|
expect(range.maxY).to.be(-1);
|
|
});
|
|
|
|
it('returns null for z > maxZoom', function() {
|
|
var max = tileGrid.maxZoom;
|
|
var range = tileGrid.getTileCoordChildTileRange([max + 1, 0, 0]);
|
|
expect(range).to.be(null);
|
|
});
|
|
|
|
});
|
|
|
|
describe('#forEachTileCoordParentTileRange()', function() {
|
|
|
|
var tileGrid;
|
|
beforeEach(function() {
|
|
tileGrid = ol.tilegrid.createForExtent(
|
|
ol.proj.get('EPSG:3857').getExtent(), 22);
|
|
});
|
|
|
|
it('iterates as expected', function() {
|
|
|
|
var tileCoord = [5, 11, 21];
|
|
var zs = [], tileRanges = [];
|
|
tileGrid.forEachTileCoordParentTileRange(
|
|
tileCoord,
|
|
function(z, tileRange) {
|
|
zs.push(z);
|
|
tileRanges.push(new ol.TileRange(
|
|
tileRange.minX, tileRange.maxX,
|
|
tileRange.minY, tileRange.maxY));
|
|
return false;
|
|
});
|
|
|
|
expect(zs.length).to.eql(5);
|
|
expect(tileRanges.length).to.eql(5);
|
|
|
|
expect(zs[0]).to.eql(4);
|
|
expect(tileRanges[0].minX).to.eql(5);
|
|
expect(tileRanges[0].maxX).to.eql(5);
|
|
expect(tileRanges[0].minY).to.eql(10);
|
|
expect(tileRanges[0].maxY).to.eql(10);
|
|
|
|
expect(zs[1]).to.eql(3);
|
|
expect(tileRanges[1].minX).to.eql(2);
|
|
expect(tileRanges[1].maxX).to.eql(2);
|
|
expect(tileRanges[1].minY).to.eql(5);
|
|
expect(tileRanges[1].maxY).to.eql(5);
|
|
|
|
expect(zs[2]).to.eql(2);
|
|
expect(tileRanges[2].minX).to.eql(1);
|
|
expect(tileRanges[2].maxX).to.eql(1);
|
|
expect(tileRanges[2].minY).to.eql(2);
|
|
expect(tileRanges[2].maxY).to.eql(2);
|
|
|
|
expect(zs[3]).to.eql(1);
|
|
expect(tileRanges[3].minX).to.eql(0);
|
|
expect(tileRanges[3].maxX).to.eql(0);
|
|
expect(tileRanges[3].minY).to.eql(1);
|
|
expect(tileRanges[3].maxY).to.eql(1);
|
|
|
|
expect(zs[4]).to.eql(0);
|
|
expect(tileRanges[4].minX).to.eql(0);
|
|
expect(tileRanges[4].maxX).to.eql(0);
|
|
expect(tileRanges[4].minY).to.eql(0);
|
|
expect(tileRanges[4].maxY).to.eql(0);
|
|
|
|
});
|
|
|
|
});
|
|
|
|
describe('getResolution', function() {
|
|
|
|
var tileGrid;
|
|
beforeEach(function() {
|
|
tileGrid = ol.tilegrid.createForExtent(
|
|
ol.proj.get('EPSG:3857').getExtent(), 22);
|
|
});
|
|
|
|
it('returns the correct resolution at the equator', function() {
|
|
// @see http://msdn.microsoft.com/en-us/library/aa940990.aspx
|
|
expect(tileGrid.getResolution(0)).to.roughlyEqual(156543.04, 1e-2);
|
|
expect(tileGrid.getResolution(1)).to.roughlyEqual(78271.52, 1e-2);
|
|
expect(tileGrid.getResolution(2)).to.roughlyEqual(39135.76, 1e-2);
|
|
expect(tileGrid.getResolution(3)).to.roughlyEqual(19567.88, 1e-2);
|
|
expect(tileGrid.getResolution(4)).to.roughlyEqual(9783.94, 1e-2);
|
|
expect(tileGrid.getResolution(5)).to.roughlyEqual(4891.97, 1e-2);
|
|
expect(tileGrid.getResolution(6)).to.roughlyEqual(2445.98, 1e-2);
|
|
expect(tileGrid.getResolution(7)).to.roughlyEqual(1222.99, 1e-2);
|
|
expect(tileGrid.getResolution(8)).to.roughlyEqual(611.50, 1e-2);
|
|
expect(tileGrid.getResolution(9)).to.roughlyEqual(305.75, 1e-2);
|
|
expect(tileGrid.getResolution(10)).to.roughlyEqual(152.87, 1e-2);
|
|
expect(tileGrid.getResolution(11)).to.roughlyEqual(76.44, 1e-2);
|
|
expect(tileGrid.getResolution(12)).to.roughlyEqual(38.22, 1e-2);
|
|
expect(tileGrid.getResolution(13)).to.roughlyEqual(19.11, 1e-2);
|
|
expect(tileGrid.getResolution(14)).to.roughlyEqual(9.55, 1e-2);
|
|
expect(tileGrid.getResolution(15)).to.roughlyEqual(4.78, 1e-2);
|
|
expect(tileGrid.getResolution(16)).to.roughlyEqual(2.39, 1e-2);
|
|
expect(tileGrid.getResolution(17)).to.roughlyEqual(1.19, 1e-2);
|
|
expect(tileGrid.getResolution(18)).to.roughlyEqual(0.60, 1e-2);
|
|
expect(tileGrid.getResolution(19)).to.roughlyEqual(0.30, 1e-2);
|
|
});
|
|
|
|
});
|
|
|
|
describe('#getTileCoordFromCoordAndZ()', function() {
|
|
|
|
describe('Y North, X East', function() {
|
|
it('returns the expected TileCoord', function() {
|
|
origin = [0, 0];
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
var tileCoord;
|
|
|
|
tileCoord = tileGrid.getTileCoordForCoordAndZ([0, 0], 3);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(0);
|
|
|
|
tileCoord = tileGrid.getTileCoordForCoordAndZ([0, 100000], 3);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(10);
|
|
|
|
tileCoord = tileGrid.getTileCoordForCoordAndZ([100000, 0], 3);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(10);
|
|
expect(tileCoord[2]).to.eql(0);
|
|
|
|
tileCoord = tileGrid.getTileCoordForCoordAndZ([100000, 100000], 3);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(10);
|
|
expect(tileCoord[2]).to.eql(10);
|
|
});
|
|
});
|
|
|
|
describe('Y South, X East', function() {
|
|
it('returns the expected TileCoord', function() {
|
|
origin = [0, 100000];
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
var tileCoord;
|
|
|
|
tileCoord = tileGrid.getTileCoordForCoordAndZ([0, 0], 3);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(-10);
|
|
|
|
tileCoord = tileGrid.getTileCoordForCoordAndZ([0, 100000], 3);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(0);
|
|
|
|
tileCoord = tileGrid.getTileCoordForCoordAndZ([100000, 0], 3);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(10);
|
|
expect(tileCoord[2]).to.eql(-10);
|
|
|
|
tileCoord = tileGrid.getTileCoordForCoordAndZ([100000, 100000], 3);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(10);
|
|
expect(tileCoord[2]).to.eql(0);
|
|
});
|
|
});
|
|
});
|
|
|
|
describe('getTileCoordForCoordAndResolution', function() {
|
|
it('returns the expected TileCoord', function() {
|
|
var tileSize = 256;
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: [10],
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
|
|
var coordinate;
|
|
var tileCoord;
|
|
|
|
// gets the first tile at the origin
|
|
coordinate = [0, 0];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(0);
|
|
|
|
// gets one tile northwest of the origin
|
|
coordinate = [-1280, 1280];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(-1);
|
|
expect(tileCoord[2]).to.eql(0);
|
|
|
|
// gets one tile northeast of the origin
|
|
coordinate = [1280, 1280];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(0);
|
|
|
|
// gets one tile southeast of the origin
|
|
coordinate = [1280, -1280];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(-1);
|
|
|
|
// gets one tile southwest of the origin
|
|
coordinate = [-1280, -1280];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(-1);
|
|
expect(tileCoord[2]).to.eql(-1);
|
|
|
|
// gets the tile to the east when on the edge
|
|
coordinate = [2560, -1280];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(1);
|
|
expect(tileCoord[2]).to.eql(-1);
|
|
|
|
// gets the tile to the north when on the edge
|
|
coordinate = [1280, -2560];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(-1);
|
|
|
|
// pixels are top aligned to the origin
|
|
coordinate = [1280, -2559.999];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(-1);
|
|
|
|
// pixels are left aligned to the origin
|
|
coordinate = [2559.999, -1280];
|
|
tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate, 10);
|
|
expect(tileCoord[0]).to.eql(0);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(-1);
|
|
});
|
|
});
|
|
|
|
|
|
describe('getTileCoordForXYAndResolution_', function() {
|
|
it('returns higher tile coord for intersections by default', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
|
|
var tileCoord;
|
|
|
|
// gets higher tile for edge intersection
|
|
tileCoord = tileGrid.getTileCoordForXYAndResolution_(
|
|
0, 0, 100, false);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(0);
|
|
expect(tileCoord[2]).to.eql(0);
|
|
|
|
// gets higher tile for edge intersection
|
|
tileCoord = tileGrid.getTileCoordForXYAndResolution_(
|
|
100000, 100000, 100, false);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(10);
|
|
expect(tileCoord[2]).to.eql(10);
|
|
|
|
});
|
|
|
|
it('handles alt intersection policy', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
|
|
var tileCoord;
|
|
|
|
// can get lower tile for edge intersection
|
|
tileCoord = tileGrid.getTileCoordForXYAndResolution_(
|
|
0, 0, 100, true);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(-1);
|
|
expect(tileCoord[2]).to.eql(-1);
|
|
|
|
// gets higher tile for edge intersection
|
|
tileCoord = tileGrid.getTileCoordForXYAndResolution_(
|
|
100000, 100000, 100, true);
|
|
expect(tileCoord[0]).to.eql(3);
|
|
expect(tileCoord[1]).to.eql(9);
|
|
expect(tileCoord[2]).to.eql(9);
|
|
|
|
});
|
|
|
|
});
|
|
|
|
describe('getTileCoordCenter', function() {
|
|
it('returns the expected center', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
var center;
|
|
|
|
center = tileGrid.getTileCoordCenter([0, 0, 0]);
|
|
expect(center[0]).to.eql(50000);
|
|
expect(center[1]).to.eql(50000);
|
|
|
|
center = tileGrid.getTileCoordCenter([3, 0, 0]);
|
|
expect(center[0]).to.eql(5000);
|
|
expect(center[1]).to.eql(5000);
|
|
|
|
center = tileGrid.getTileCoordCenter([3, 9, 9]);
|
|
expect(center[0]).to.eql(95000);
|
|
expect(center[1]).to.eql(95000);
|
|
});
|
|
});
|
|
|
|
describe('getTileCoordExtent', function() {
|
|
it('returns the expected extend', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
var tileCoordExtent;
|
|
|
|
tileCoordExtent = tileGrid.getTileCoordExtent([0, 0, 0]);
|
|
expect(tileCoordExtent[0]).to.eql(0);
|
|
expect(tileCoordExtent[1]).to.eql(0);
|
|
expect(tileCoordExtent[2]).to.eql(100000);
|
|
expect(tileCoordExtent[3]).to.eql(100000);
|
|
|
|
tileCoordExtent = tileGrid.getTileCoordExtent([3, 9, 0]);
|
|
expect(tileCoordExtent[0]).to.eql(90000);
|
|
expect(tileCoordExtent[1]).to.eql(0);
|
|
expect(tileCoordExtent[2]).to.eql(100000);
|
|
expect(tileCoordExtent[3]).to.eql(10000);
|
|
|
|
tileCoordExtent = tileGrid.getTileCoordExtent([3, 0, 9]);
|
|
expect(tileCoordExtent[0]).to.eql(0);
|
|
expect(tileCoordExtent[1]).to.eql(90000);
|
|
expect(tileCoordExtent[2]).to.eql(10000);
|
|
expect(tileCoordExtent[3]).to.eql(100000);
|
|
});
|
|
});
|
|
|
|
describe('getTileRangeForExtentAndResolution', function() {
|
|
it('returns the expected TileRange', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
var tileRange;
|
|
|
|
tileRange = tileGrid.getTileRangeForExtentAndResolution(extent,
|
|
resolutions[0]);
|
|
expect(tileRange.minY).to.eql(0);
|
|
expect(tileRange.minX).to.eql(0);
|
|
expect(tileRange.maxX).to.eql(0);
|
|
expect(tileRange.maxY).to.eql(0);
|
|
|
|
tileRange = tileGrid.getTileRangeForExtentAndResolution(extent,
|
|
resolutions[1]);
|
|
expect(tileRange.minX).to.eql(0);
|
|
expect(tileRange.minY).to.eql(0);
|
|
expect(tileRange.maxX).to.eql(1);
|
|
expect(tileRange.maxY).to.eql(1);
|
|
|
|
tileRange = tileGrid.getTileRangeForExtentAndResolution(extent,
|
|
resolutions[2]);
|
|
expect(tileRange.minX).to.eql(0);
|
|
expect(tileRange.minY).to.eql(0);
|
|
expect(tileRange.maxX).to.eql(3);
|
|
expect(tileRange.maxY).to.eql(3);
|
|
|
|
tileRange = tileGrid.getTileRangeForExtentAndResolution(extent,
|
|
resolutions[3]);
|
|
expect(tileRange.minX).to.eql(0);
|
|
expect(tileRange.minY).to.eql(0);
|
|
expect(tileRange.maxX).to.eql(9);
|
|
expect(tileRange.maxY).to.eql(9);
|
|
});
|
|
});
|
|
|
|
describe('getTileRangeForExtentAndZ', function() {
|
|
it('returns the expected TileRange', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
var e = [45000, 5000, 55000, 15000];
|
|
var tileRange;
|
|
|
|
tileRange = tileGrid.getTileRangeForExtentAndZ(e, 0);
|
|
expect(tileRange.minY).to.eql(0);
|
|
expect(tileRange.minX).to.eql(0);
|
|
expect(tileRange.maxX).to.eql(0);
|
|
expect(tileRange.maxY).to.eql(0);
|
|
|
|
tileRange = tileGrid.getTileRangeForExtentAndZ(e, 1);
|
|
expect(tileRange.minX).to.eql(0);
|
|
expect(tileRange.minY).to.eql(0);
|
|
expect(tileRange.maxX).to.eql(1);
|
|
expect(tileRange.maxY).to.eql(0);
|
|
|
|
tileRange = tileGrid.getTileRangeForExtentAndZ(e, 2);
|
|
expect(tileRange.minX).to.eql(1);
|
|
expect(tileRange.minY).to.eql(0);
|
|
expect(tileRange.maxX).to.eql(2);
|
|
expect(tileRange.maxY).to.eql(0);
|
|
|
|
tileRange = tileGrid.getTileRangeForExtentAndZ(e, 3);
|
|
expect(tileRange.minX).to.eql(4);
|
|
expect(tileRange.minY).to.eql(0);
|
|
expect(tileRange.maxX).to.eql(5);
|
|
expect(tileRange.maxY).to.eql(1);
|
|
});
|
|
});
|
|
|
|
describe('getTileSize', function() {
|
|
|
|
var resolutions = [1000, 500, 250, 100];
|
|
var origin = [0, 0];
|
|
|
|
it('works with one tile size as number', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
tileSize: 256,
|
|
resolutions: resolutions,
|
|
origin: origin
|
|
});
|
|
expect(tileGrid.getTileSize(0)).to.equal(256);
|
|
expect(tileGrid.getTileSize(3)).to.equal(256);
|
|
});
|
|
|
|
it('works with one tile size as array', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
tileSize: [512, 256],
|
|
resolutions: resolutions,
|
|
origin: origin
|
|
});
|
|
expect(tileGrid.getTileSize(0)).to.eql([512, 256]);
|
|
expect(tileGrid.getTileSize(3)).to.eql([512, 256]);
|
|
});
|
|
|
|
it('works with multiple tile sizes as number', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
tileSizes: [256, 256, 256, 512],
|
|
resolutions: resolutions,
|
|
origin: origin
|
|
});
|
|
expect(tileGrid.getTileSize(0)).to.equal(256);
|
|
expect(tileGrid.getTileSize(3)).to.equal(512);
|
|
});
|
|
|
|
it('works with multiple tile sizes as array', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
tileSizes: [[512, 256], [512, 256], [512, 256], [640, 320]],
|
|
resolutions: resolutions,
|
|
origin: origin
|
|
});
|
|
expect(tileGrid.getTileSize(0)).to.eql([512, 256]);
|
|
expect(tileGrid.getTileSize(3)).to.eql([640, 320]);
|
|
});
|
|
|
|
});
|
|
|
|
describe('forEachTileCoordParentTileRange', function() {
|
|
it('iterates as expected', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
var zs = [], tileRanges = [];
|
|
|
|
tileGrid.forEachTileCoordParentTileRange(
|
|
[3, 7, 3],
|
|
function(z, tileRange) {
|
|
zs.push(z);
|
|
tileRanges.push(tileRange);
|
|
return false;
|
|
});
|
|
|
|
expect(zs.length).to.eql(3);
|
|
expect(tileRanges.length).to.eql(3);
|
|
|
|
expect(zs[0]).to.eql(2);
|
|
expect(tileRanges[0].minX).to.eql(2);
|
|
expect(tileRanges[0].minY).to.eql(1);
|
|
expect(tileRanges[0].maxX).to.eql(3);
|
|
expect(tileRanges[0].maxY).to.eql(1);
|
|
|
|
expect(zs[1]).to.eql(1);
|
|
expect(tileRanges[1].minX).to.eql(1);
|
|
expect(tileRanges[1].minY).to.eql(0);
|
|
expect(tileRanges[1].maxX).to.eql(1);
|
|
expect(tileRanges[1].maxY).to.eql(0);
|
|
|
|
expect(zs[2]).to.eql(0);
|
|
expect(tileRanges[2].minX).to.eql(0);
|
|
expect(tileRanges[2].minY).to.eql(0);
|
|
expect(tileRanges[2].maxX).to.eql(0);
|
|
expect(tileRanges[2].maxY).to.eql(0);
|
|
});
|
|
});
|
|
|
|
describe('getZForResolution (exact)', function() {
|
|
it('returns the expected z value', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
|
|
expect(tileGrid.getZForResolution(1000)).to.eql(0);
|
|
expect(tileGrid.getZForResolution(500)).to.eql(1);
|
|
expect(tileGrid.getZForResolution(250)).to.eql(2);
|
|
expect(tileGrid.getZForResolution(100)).to.eql(3);
|
|
});
|
|
});
|
|
|
|
describe('getZForResolution (approximate)', function() {
|
|
it('returns the expected z value', function() {
|
|
var tileGrid = new ol.tilegrid.TileGrid({
|
|
resolutions: resolutions,
|
|
origin: origin,
|
|
tileSize: tileSize
|
|
});
|
|
|
|
expect(tileGrid.getZForResolution(2000)).to.eql(0);
|
|
expect(tileGrid.getZForResolution(1000)).to.eql(0);
|
|
expect(tileGrid.getZForResolution(900)).to.eql(0);
|
|
expect(tileGrid.getZForResolution(750)).to.eql(1);
|
|
expect(tileGrid.getZForResolution(625)).to.eql(1);
|
|
expect(tileGrid.getZForResolution(500)).to.eql(1);
|
|
expect(tileGrid.getZForResolution(475)).to.eql(1);
|
|
expect(tileGrid.getZForResolution(375)).to.eql(2);
|
|
expect(tileGrid.getZForResolution(250)).to.eql(2);
|
|
expect(tileGrid.getZForResolution(200)).to.eql(2);
|
|
expect(tileGrid.getZForResolution(125)).to.eql(3);
|
|
expect(tileGrid.getZForResolution(100)).to.eql(3);
|
|
expect(tileGrid.getZForResolution(50)).to.eql(3);
|
|
});
|
|
});
|
|
|
|
});
|
|
|
|
goog.require('ol.Coordinate');
|
|
goog.require('ol.extent');
|
|
goog.require('ol.extent.Corner');
|
|
goog.require('ol.proj');
|
|
goog.require('ol.proj.METERS_PER_UNIT');
|
|
goog.require('ol.proj');
|
|
goog.require('ol.proj.EPSG3857');
|
|
goog.require('ol.proj.Projection');
|
|
goog.require('ol.proj.Units');
|
|
goog.require('ol.TileRange');
|
|
goog.require('ol.tilegrid.TileGrid');
|