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Use ol.Projection#.getMetersPerUnit()

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As a follow-up to #815, this change makes
ol.tilegrid.createForProjection work in cases where a Proj4
projection does not have units set. For better code readability,
a new variable is used when calculating the resolution.
This commit is contained in:
ahocevar
2013-06-25 00:29:50 +02:00
parent 388967d00c
commit a14b21d80c
2 changed files with 15 additions and 3 deletions
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12
test/spec/ol/tilegrid/tilegrid.test.js
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@@ -190,6 +190,16 @@ describe('ol.tilegrid.TileGrid', function() {
expect(resolutions.length).to.be(24);
});
it('works for projections unknown to the client', function() {
var projection = new ol.Projection(
{code: 'EPSG:31287', units: 'm'});
var grid = ol.tilegrid.createForProjection(projection);
var resolutions = grid.getResolutions();
expect(resolutions[5]).to.be(
360 * ol.METERS_PER_UNIT[ol.ProjectionUnits.DEGREES] /
ol.DEFAULT_TILE_SIZE / Math.pow(2, 5));
});
});
describe('getForProjection', function() {
@@ -633,6 +643,8 @@ describe('ol.tilegrid.TileGrid', function() {
});
goog.require('ol.Coordinate');
goog.require('ol.Projection');
goog.require('ol.ProjectionUnits');
goog.require('ol.TileCoord');
goog.require('ol.proj');
goog.require('ol.tilegrid.TileGrid');