ashatora/node-mbtiles
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change interface to XYZ

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This commit is contained in:
Konstantin Käfer
2011-06-28 20:11:35 +02:00
parent 92fe4ae9db
commit b20f0937b8
1 changed files with 8 additions and 2 deletions
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10
lib/mbtiles.js
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@@ -268,7 +268,7 @@ MBTiles.prototype.insertGridTiles = function(map, callback) {
stmt.finalize(callback);
};
// Select a tile from an mbtiles database.
// Select a tile from an mbtiles database. Scheme is XYZ.
//
// - @param {Number} x tile x coordinate.
// - @param {Number} y tile y coordinate.
@@ -277,6 +277,9 @@ MBTiles.prototype.insertGridTiles = function(map, callback) {
MBTiles.prototype.getTile = function(z, x, y, callback) {
if (typeof callback !== 'function') callback = noop;
// Flip Y coordinate because MBTiles files are TMS.
y = Math.pow(2, z) - 1 - y;
var mbtiles = this;
this.db.get('SELECT tile_data FROM tiles WHERE ' +
'zoom_level = ? AND tile_column = ? AND tile_row = ?',
@@ -297,7 +300,7 @@ MBTiles.prototype.getTile = function(z, x, y, callback) {
});
};
// Select a grid and its data from an mbtiles database.
// Select a grid and its data from an mbtiles database. Scheme is XYZ.
//
// - @param {Number} x tile x coordinate
// - @param {Number} y tile y coordinate
@@ -306,6 +309,9 @@ MBTiles.prototype.getTile = function(z, x, y, callback) {
MBTiles.prototype.getGrid = function(z, x, y, callback) {
if (typeof callback !== 'function') callback = noop;
// Flip Y coordinate because MBTiles files are TMS.
y = Math.pow(2, z) - 1 - y;
var that = this;
Step(
function() {