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Avoid left shift in resolution calculations

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This commit is contained in:
Tim Schaub
2013-02-18 18:37:27 -07:00
parent 4c2463dd91
commit 0a5dae9ed0
4 changed files with 36 additions and 4 deletions
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31
test/spec/ol/tilegrid.test.js
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@@ -94,6 +94,37 @@ describe('ol.tilegrid.TileGrid', function() {
});
});
describe('createForProjection', function() {
it('allows easier creation of a tile grid', function() {
var projection = ol.Projection.getFromCode('EPSG:3857');
var grid = ol.tilegrid.createForProjection(projection);
expect(grid).toBeA(ol.tilegrid.TileGrid);
var resolutions = grid.getResolutions();
expect(resolutions.length).toBe(19);
});
it('accepts a number of zoom levels', function() {
var projection = ol.Projection.getFromCode('EPSG:3857');
var grid = ol.tilegrid.createForProjection(projection, 22);
expect(grid).toBeA(ol.tilegrid.TileGrid);
var resolutions = grid.getResolutions();
expect(resolutions.length).toBe(23);
});
it('accepts a big number of zoom levels', function() {
var projection = ol.Projection.getFromCode('EPSG:3857');
var grid = ol.tilegrid.createForProjection(projection, 23);
expect(grid).toBeA(ol.tilegrid.TileGrid);
var resolutions = grid.getResolutions();
expect(resolutions.length).toBe(24);
});
});
describe('getTileCoordFromCoordAndZ', function() {
describe('Y North, X East', function() {