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Cleaned up client-side tile logic.

This commit is contained in:
FrozenCow 2011-01-10 01:28:50 +01:00
parent c8a08b5af7
commit 4b5e6e6f80
1 changed files with 33 additions and 15 deletions
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48
web/map.js
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@ -58,8 +58,7 @@ function makeRequest(url, func, type, fail, post, contenttype)
updateUrl: setup.updateUrl,
tileWidth: 128,
tileHeight: 128,
updateRate: setup.updateRate,
zoomSize: [ 128, 128, 256, 512 ]
updateRate: setup.updateRate
};
function MCMapProjection() {
@ -140,6 +139,30 @@ function makeRequest(url, func, type, fail, post, contenttype)
}
}
function getImageSize(zoom) {
return zoom > 0 ? config.tileWidth : config.tileWidth*2;
}
function getTileSize(zoom, imageSize) {
imageSize = imageSize || getImageSize(zoom);
return Math.pow(2, 6+zoom) * (imageSize / config.tileWidth);
}
function getTileInfo(coord, zoom) {
var imageSize = getImageSize(zoom);
var tileSize = getTileSize(zoom, imageSize);
var imageName = '';
if (caveMode) imageName += 'c';
if (zoom == 0) imageName += 'z';
imageName += 't_' + (-coord.x * imageSize) + '_' + (coord.y * imageSize);
return {
name: imageName,
size: tileSize,
};
}
mcMapType.prototype.tileSize = new google.maps.Size(config.tileWidth, config.tileHeight);
mcMapType.prototype.minZoom = 0;
mcMapType.prototype.maxZoom = 3;
@ -148,23 +171,17 @@ function makeRequest(url, func, type, fail, post, contenttype)
img.onerror = function() { img.style.display = 'none'; }
img.style.width = config.zoomSize[zoom] + 'px';
img.style.height = config.zoomSize[zoom] + 'px';
var tileInfo = getTileInfo(coord, zoom);
img.style.width = tileInfo.size + 'px';
img.style.height = tileInfo.size + 'px';
img.style.borderStyle = 'none';
//img.style.border = '1px solid red';
//img.style.margin = '-1px -1px -1px -1px';
var pfx = caveMode ? "c" : "";
tileDict[tileInfo.name] = img;
if(zoom > 0) {
var tilename = pfx + "t_" + (- coord.x * config.tileWidth) + '_' + coord.y * config.tileHeight;
} else {
var tilename = pfx + "zt_" + (- coord.x * config.tileWidth * 2) + '_' + (coord.y * config.tileHeight * 2);
}
tileDict[tilename] = img;
var url = tileUrl(tilename);
var url = tileUrl(tileInfo.name);
img.src = url;
//img.style.background = 'url(' + url + ')';
//img.innerHTML = '<small>' + tilename + '</small>';
@ -374,7 +391,8 @@ function makeRequest(url, func, type, fail, post, contenttype)
caveMapType.projection = new MCMapProjection();
map.zoom_changed = function() {
mapType.tileSize = new google.maps.Size(config.zoomSize[map.zoom], config.zoomSize[map.zoom]);
var tileSize = getTileSize(map.zoom);
mapType.tileSize = new google.maps.Size(tileSize, tileSize);
caveMapType.tileSize = mapType.tileSize;
};