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Default the buffer to 0 instead of 2. On small maps (or fullscreen

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maps on small devices) this is a huge win: instead of downloading
*42 tiles* on a 500x500 div, we now download just 12, a 3.5x savings
in downloads by default. The buffer of 2 was originally chosen when
most maps were based on slow-loading WMS laeyrs and having an area
to pan into was more important. That default no longer makes sense.

(Closes #3111) r=tschaub


git-svn-id: http://svn.openlayers.org/trunk/openlayers@11481 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
crschmidt
2011-02-25 11:50:30 +00:00
parent f7fcb86ee9
commit 339d1ebaef
10 changed files with 24 additions and 21 deletions
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10
tests/Layer/MapServer.html
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@@ -74,11 +74,11 @@
function test_Layer_MapServer_inittiles (t) {
t.plan( 2 );
var map = new OpenLayers.Map('map');
layer = new OpenLayers.Layer.MapServer(name, url, params);
layer = new OpenLayers.Layer.MapServer(name, url, params, {buffer: 0});
map.addLayer(layer);
map.setCenter(new OpenLayers.LonLat(0,0),5);
t.eq( layer.grid.length, 7, "Grid rows is correct." );
t.eq( layer.grid[0].length, 6, "Grid cols is correct." );
t.eq( layer.grid.length, 4, "Grid rows is correct." );
t.eq( layer.grid[0].length, 3, "Grid cols is correct." );
map.destroy();
}
@@ -234,7 +234,7 @@
var map = new OpenLayers.Map('map');
var layer = new OpenLayers.Layer.Google("Google");
map.addLayer(layer);
layer = new OpenLayers.Layer.MapServer(name, url, params, {isBaseLayer: false, reproject: true});
layer = new OpenLayers.Layer.MapServer(name, url, params, {isBaseLayer: false, reproject: true, buffer: 2});
layer.isBaseLayer=false;
map.addLayer(layer);
map.setCenter(new OpenLayers.LonLat(0,0), 5);
@@ -251,7 +251,7 @@
}
var map = new OpenLayers.Map('map');
layer = new OpenLayers.Layer.MapServer(name, url, params);
layer = new OpenLayers.Layer.MapServer(name, url, params, {buffer:2});
map.addLayer(layer);
map.setCenter(new OpenLayers.LonLat(0,0), 5);
var tile = layer.grid[0][0];