Support tile sources without configured projection

This change adds a lot of flexibility to working with tile
layers: Sources where the server projection or tile grid do not
matter can now be constructed without specifying a projection or
tile grid.

The tileUrlFunction/imageUrlFunction now also creates updated
URLs when the params of the layer change, so things like
mergeNewParams in ol2 will be possible.

A nice side effect of this whole change is that there is no more
duplicated code between tiled and single image WMS layers.

While I was at it, I also fixed a WMS 1.1.1 axis order issue
and incorrect STYLES params (STYLES=& instead of STYLES&).
This commit is contained in:
ahocevar
2013-03-05 00:46:58 +01:00
parent cad215e0cc
commit 586f393492
24 changed files with 320 additions and 206 deletions
+15 -13
View File
@@ -61,7 +61,7 @@ describe('ol.TileUrlFunction', function() {
});
});
describe('createBboxParam', function() {
describe('createWMSParams', function() {
var tileGrid;
beforeEach(function() {
tileGrid = new ol.tilegrid.XYZ({
@@ -70,24 +70,26 @@ describe('ol.TileUrlFunction', function() {
});
it('creates expected URL', function() {
var epsg3857 = ol.projection.getFromCode('EPSG:3857');
var tileUrlFunction = ol.TileUrlFunction.createBboxParam(
'http://wms?foo=bar', tileGrid, epsg3857.getAxisOrientation());
var tileUrlFunction = ol.TileUrlFunction.createWMSParams(
'http://wms?foo=bar', {});
var tileCoord = new ol.TileCoord(1, 0, 0);
var tileUrl = tileUrlFunction(tileCoord);
var expected = 'http://wms?foo=bar&BBOX=-20037508.342789244' +
'%2C20037508.342789244%2C0%2C40075016.68557849' +
'&HEIGHT=256&WIDTH=256';
var tileUrl = tileUrlFunction(tileCoord, tileGrid, epsg3857);
var expected = 'http://wms?foo=bar&SERVICE=WMS&VERSION=1.3.0&' +
'REQUEST=GetMap&FORMAT=image%2Fpng&TRANSPARENT=true&WIDTH=256&' +
'HEIGHT=256&BBOX=-20037508.342789244%2C20037508.342789244%2C0%2C' +
'40075016.68557849&CRS=EPSG%3A3857&STYLES=';
expect(tileUrl).toEqual(expected);
});
it('creates expected URL respecting axis orientation', function() {
var epsg4326 = ol.projection.getFromCode('EPSG:4326');
var tileUrlFunction = ol.TileUrlFunction.createBboxParam(
'http://wms?foo=bar', tileGrid, epsg4326.getAxisOrientation());
var tileUrlFunction = ol.TileUrlFunction.createWMSParams(
'http://wms?foo=bar', {});
var tileCoord = new ol.TileCoord(1, 0, 0);
var tileUrl = tileUrlFunction(tileCoord);
var expected = 'http://wms?foo=bar&BBOX=20037508.342789244' +
'%2C-20037508.342789244%2C40075016.68557849%2C0' +
'&HEIGHT=256&WIDTH=256';
var tileUrl = tileUrlFunction(tileCoord, tileGrid, epsg4326);
var expected = 'http://wms?foo=bar&SERVICE=WMS&VERSION=1.3.0&' +
'REQUEST=GetMap&FORMAT=image%2Fpng&TRANSPARENT=true&WIDTH=256&' +
'HEIGHT=256&BBOX=20037508.342789244%2C-20037508.342789244%2C' +
'40075016.68557849%2C0&CRS=EPSG%3A4326&STYLES=';
expect(tileUrl).toEqual(expected);
});
});