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Split background sources into background_source

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This commit is contained in:
Tom MacWright
2012-12-06 11:12:06 -05:00
parent 3db0ebb15c
commit 5c6c271394
4 changed files with 38 additions and 36 deletions
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1
index.html
View File

@@ -30,6 +30,7 @@
<script src='js/id/taginfo.js'></script>
<script src='js/id/renderer/style.js'></script>
<script src='js/id/renderer/background.js'></script>
<script src='js/id/renderer/background_source.js'></script>
<script src='js/id/renderer/map.js'></script>
<script src='js/id/renderer/hash.js'></script>
<script src='js/id/renderer/markers.js'></script>

36
js/id/renderer/background.js
View File

@@ -63,39 +63,3 @@ iD.Background = function() {
return background;
};
iD.BackgroundSource = {};
// derive the url of a 'quadkey' style tile from a coordinate object
iD.BackgroundSource.template = function(template, subdomains) {
return function(coord) {
var u = '';
for (var zoom = coord[2]; zoom > 0; zoom--) {
var byte = 0;
var mask = 1 << (zoom - 1);
if ((coord[0] & mask) !== 0) byte++;
if ((coord[1] & mask) !== 0) byte += 2;
u += byte.toString();
}
// distribute requests against multiple domains
var t = subdomains ?
subdomains[coord[2] % subdomains.length] : '';
return template
.replace('{t}', t)
.replace('{u}', u)
.replace('{x}', coord[0])
.replace('{y}', coord[1])
.replace('{z}', coord[2]);
};
};
iD.BackgroundSource.Bing = iD.BackgroundSource.template(
'http://ecn.t{t}.tiles.virtualearth.net/tiles/a{u}.jpeg?g=587&mkt=en-gb&n=z',
[0, 1, 2, 3]);
iD.BackgroundSource.Tiger2012 = iD.BackgroundSource.template(
'http://{t}.tile.openstreetmap.us/tiger2012_roads_expanded/{z}/{x}/{y}.png',
['a', 'b', 'c']);
iD.BackgroundSource.OSM = iD.BackgroundSource.template(
'http://{t}.tile.openstreetmap.org/{z}/{x}/{y}.png',
['a', 'b', 'c']);

36
js/id/renderer/background_source.js Normal file
View File

@@ -0,0 +1,36 @@
iD.BackgroundSource = {};
// derive the url of a 'quadkey' style tile from a coordinate object
iD.BackgroundSource.template = function(template, subdomains) {
return function(coord) {
var u = '';
for (var zoom = coord[2]; zoom > 0; zoom--) {
var byte = 0;
var mask = 1 << (zoom - 1);
if ((coord[0] & mask) !== 0) byte++;
if ((coord[1] & mask) !== 0) byte += 2;
u += byte.toString();
}
// distribute requests against multiple domains
var t = subdomains ?
subdomains[coord[2] % subdomains.length] : '';
return template
.replace('{t}', t)
.replace('{u}', u)
.replace('{x}', coord[0])
.replace('{y}', coord[1])
.replace('{z}', coord[2]);
};
};
iD.BackgroundSource.Bing = iD.BackgroundSource.template(
'http://ecn.t{t}.tiles.virtualearth.net/tiles/a{u}.jpeg?g=587&mkt=en-gb&n=z',
[0, 1, 2, 3]);
iD.BackgroundSource.Tiger2012 = iD.BackgroundSource.template(
'http://{t}.tile.openstreetmap.us/tiger2012_roads_expanded/{z}/{x}/{y}.png',
['a', 'b', 'c']);
iD.BackgroundSource.OSM = iD.BackgroundSource.template(
'http://{t}.tile.openstreetmap.org/{z}/{x}/{y}.png',
['a', 'b', 'c']);

1
test/index.html
View File

@@ -33,6 +33,7 @@
<script src='../js/id/renderer/style.js'></script>
<script src='../js/id/renderer/background.js'></script>
<script src='../js/id/renderer/background_source.js'></script>
<script src='../js/id/renderer/map.js'></script>
<script src='../js/id/renderer/hash.js'></script>
<script src='../js/id/renderer/markers.js'></script>