phillip/ingress-intel-total-conversion
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add a limit on the number of map tile data requests merged into a single bucket - the server seems to have some limits on this

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yes - it will cause more requests in this case, but that's nicer than just completely failing

fix #320
This commit is contained in:
Jon Atkins 2013-05-27 02:16:52 +01:00
parent 895671d860
commit 9dc0ac4234
1 changed files with 17 additions and 1 deletions
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18
code/map_data.js
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@ -12,6 +12,9 @@ window.requestData = function() {
requests.abort();
cleanUp();
//a limit on the number of map tiles to be pulled in a single request
var MAX_TILES_PER_BUCKET = 20;
var bounds = clampLatLngBounds(map.getBounds());
//we query the server as if the zoom level was this. it may not match the actual map zoom level
@ -24,14 +27,24 @@ window.requestData = function() {
// will group requests by second-last quad-key quadrant
tiles = {};
fullBucketCount = 0;
// walk in x-direction, starts right goes left
for (var x = x1; x <= x2; x++) {
for (var y = y1; y <= y2; y++) {
var tile_id = pointToTileId(z, x, y);
var bucket = (x % 2) + ":" + (y % 2);
if (!tiles[bucket])
if (!tiles[bucket]) {
//create empty bucket
tiles[bucket] = [];
}
else if(tiles[bucket].length >= MAX_TILES_PER_BUCKET) {
//too many items in bucket. rename it, and create a new empty one
tiles[bucket+'_'+fullBucketCount] = tiles[bucket];
fullBucketCount++;
tiles[bucket] = [];
}
tiles[bucket].push(generateBoundsParams(
tile_id,
tileToLat(y + 1, z),
@ -41,6 +54,9 @@ window.requestData = function() {
));
}
}
for (i in tiles) {
console.log('bucket '+i+' size '+tiles[i].length);
}
// Reset previous result of Portal Render Limit handler
portalRenderLimit.init();