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better, restored max zoom level. Tile counts still aren't correct for the lower number zoom levels.

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This commit is contained in:
andygup 2014-02-08 19:20:22 -07:00
parent 2ace73e5c1
commit 0295fc40c0
2 changed files with 56 additions and 28 deletions
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27
lib/tiles/offlineEnabler.js
View File

@ -30,6 +30,7 @@ define([
console.log("extending layer", layer.url);
layer._tileUrlArr = [];
layer._tileSize = 0;
//Reset _tileUrlArr when extent is changed
layer._map.on("update-start",function(evt){
@ -100,21 +101,19 @@ define([
return tileid;
};
layer.getLevelEstimation = function(extent, level,callback)
{
//var tilingScheme = new TilingScheme(this,geometry);
//var cellIds = tilingScheme.getAllCellIdsInExtent(extent,level);
var cellIdLength = this._tileUrlArr.length;
this.estimateTileSize(function(tileSize){
var levelEstimation = {
level: level,
tileCount: cellIdLength,
sizeBytes: cellIdLength * tileSize
}
layer.getLevelEstimation = function(extent, level, tileSize)
{
var tilingScheme = new TilingScheme(this,geometry);
var cellIds = tilingScheme.getAllCellIdsInExtent(extent,level);
callback(levelEstimation);
});
};
var levelEstimation = {
level: level,
tileCount: cellIds.length,
sizeBytes: cellIds.length * tileSize
}
return levelEstimation;
};
layer.prepareForOffline = function(minLevel, maxLevel, extent, reportProgress)
{

57
samples/tiles/tiles-indexed-db.js
View File

@ -182,30 +182,32 @@ require(["esri/map",
{
console.log('updating');
var zoomLevel = map.getLevel();
dojo.byId('currentLevel').value = zoomLevel;
dojo.byId('maxLevel').value = zoomLevel;
dojo.byId('currentLevel').value = zoomLevel;
var minLevel = parseInt(dojo.byId('minLevel').value);
var maxLevel = zoomLevel;
var minLevel = parseInt(dojo.byId('minLevel').value);
var maxLevel = parseInt(dojo.byId('maxLevel').value);
if( maxLevel > zoomLevel + 3 || maxLevel > basemapLayer.maxLevel)
{
maxLevel = Math.min(basemapLayer.maxLevel, zoomLevel + 3);
dojo.byId('maxLevel').value = maxLevel;
}
var totalEstimation = { tileCount:0, sizeBytes:0 }
domConstruct.empty('tile-count-table-body');
//NOTE: Number of tiles per zoom level will not change unless the map div changes size
var levelEstimation;
basemapLayer.getLevelEstimation(map.extent,minLevel,function(result){
levelEstimation = result;
basemapLayer.estimateTileSize(function(tileSize){
for(var level=minLevel; level<=maxLevel; level++)
{
var levelEstimation = basemapLayer.getLevelEstimation(map.extent,level,tileSize);
totalEstimation.tileCount += levelEstimation.tileCount;
totalEstimation.sizeBytes += levelEstimation.sizeBytes;
if( levelEstimation.tileCount > 1 && levelEstimation.tileCount < 5000)
if( levelEstimation.tileCount > 1)
{
var rowContent = [level, levelEstimation.tileCount, Math.round(levelEstimation.sizeBytes / 1024 / 1024 * 100) / 100 + " Mb"]
var rowContent = [levelEstimation.level, levelEstimation.tileCount, Math.round(levelEstimation.sizeBytes / 1024 / 1024 * 100) / 100 + " Mb"]
rowContent = "<td>" + rowContent.join("</td><td>") + "</td>";
var tr = domConstruct.place("<tr>", dojo.byId('tile-count-table-body'),'last')
domConstruct.place(rowContent, tr,'last');
@ -223,8 +225,35 @@ require(["esri/map",
rowContent = "<td><b>" + rowContent.join("</b></td><td><b>") + "</b></td>";
tr = domConstruct.place("<tr>", dojo.byId('tile-count-table-body'),'last')
domConstruct.place(rowContent, tr,'last');
});
})
// for(var level=minLevel; level<=maxLevel; level++)
// {
// totalEstimation.tileCount += levelEstimation.tileCount;
// totalEstimation.sizeBytes += levelEstimation.sizeBytes;
//
// if( levelEstimation.tileCount > 1 && levelEstimation.tileCount < 5000)
// {
// var rowContent = [level, levelEstimation.tileCount, Math.round(levelEstimation.sizeBytes / 1024 / 1024 * 100) / 100 + " Mb"]
// rowContent = "<td>" + rowContent.join("</td><td>") + "</td>";
// var tr = domConstruct.place("<tr>", dojo.byId('tile-count-table-body'),'last')
// domConstruct.place(rowContent, tr,'last');
// }
//
// if( totalEstimation.tileCount > 5000 )
// {
// var tr = domConstruct.place("<tr>", dojo.byId('tile-count-table-body'),'last')
// domConstruct.place("<td colspan=4>...</td>", tr,'last');
// break;
// }
// }
//
// rowContent = ["Total", totalEstimation.tileCount, Math.floor(totalEstimation.sizeBytes / 1024 / 1024 * 100)/100 + " Mb"];
// rowContent = "<td><b>" + rowContent.join("</b></td><td><b>") + "</b></td>";
// tr = domConstruct.place("<tr>", dojo.byId('tile-count-table-body'),'last')
// domConstruct.place(rowContent, tr,'last');
// });
// })
}
function goOffline()
@ -282,7 +311,7 @@ require(["esri/map",
/* launch offline preparation process */
var minLevel = parseInt(dojo.byId('minLevel').value);
var maxLevel = map.getLevel();
var maxLevel = map.getLevel(); //current zoom level sets max extent
basemapLayer.prepareForOffline(minLevel, maxLevel, map.extent, reportProgress);
}