[Geowebcache-devel] Compute resolutions when CRS=3857 and TileSize=512

[xavier l. <lho...@gm...>]

Hi



I'm trying compute the resolutions when CRS=3857 and TileSize=512

I'm using a Javascript with OL3 to do this.

var widthE =ol.extent.getWidth(projectionExtent) ;
var nbReso = TileMatrixIds.length;
var resolutions = new Array(nbReso);
var matrixIds = new Array(nbReso);
for (var z = 0; z < nbReso; ++z) {
var size = widthE  / tileSizeListe[z];
resolutions[z] = size / Math.pow(2, z);
}

It's working well when my tileSize are equal to 256.


>From the generated demo web page ,I obtained those value.
But I can't figure out how to compute them.
//var resolutions2=[132291.9312505292, 66145.9656252646,
26458.386250105836, 19843.789687579378, 13229.193125052918,
5291.677250021167, 2645.8386250105837, 1984.3789687579376,
1322.9193125052918, 529.1677250021168, 264.5838625010584,
132.2919312505292];

If you have an idea ....