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Improve type checking in ol.TileUrlFunction

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This commit is contained in:
Tom Payne
2013-04-30 21:35:28 +02:00
parent 0e69af847e
commit 0541053fa9
1 changed files with 66 additions and 41 deletions
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107
src/ol/tileurlfunction.js
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@@ -18,15 +18,21 @@ ol.TileUrlFunctionType;
* @return {ol.TileUrlFunctionType} Tile URL function.
*/
ol.TileUrlFunction.createFromTemplate = function(template) {
return function(tileCoord) {
if (goog.isNull(tileCoord)) {
return undefined;
} else {
return template.replace('{z}', tileCoord.z)
.replace('{x}', tileCoord.x)
.replace('{y}', tileCoord.y);
}
};
return (
/**
* @param {ol.TileCoord} tileCoord Tile Coordinate.
* @param {ol.Projection} projection Projection.
* @return {string|undefined} Tile URL.
*/
function(tileCoord, projection) {
if (goog.isNull(tileCoord)) {
return undefined;
} else {
return template.replace('{z}', '' + tileCoord.z)
.replace('{x}', '' + tileCoord.x)
.replace('{y}', '' + tileCoord.y);
}
});
};
@@ -48,14 +54,21 @@ ol.TileUrlFunction.createFromTileUrlFunctions = function(tileUrlFunctions) {
if (tileUrlFunctions.length === 1) {
return tileUrlFunctions[0];
}
return function(tileCoord, projection) {
if (goog.isNull(tileCoord)) {
return undefined;
} else {
var index = goog.math.modulo(tileCoord.hash(), tileUrlFunctions.length);
return tileUrlFunctions[index].call(this, tileCoord, projection);
}
};
return (
/**
* @param {ol.TileCoord} tileCoord Tile Coordinate.
* @param {ol.Projection} projection Projection.
* @return {string|undefined} Tile URL.
*/
function(tileCoord, projection) {
if (goog.isNull(tileCoord)) {
return undefined;
} else {
var index =
goog.math.modulo(tileCoord.hash(), tileUrlFunctions.length);
return tileUrlFunctions[index].call(this, tileCoord, projection);
}
});
};
@@ -69,20 +82,26 @@ ol.TileUrlFunction.createFromTileUrlFunctions = function(tileUrlFunctions) {
ol.TileUrlFunction.createFromParamsFunction =
function(baseUrl, params, paramsFunction) {
var tmpExtent = ol.extent.createEmptyExtent();
return function(tileCoord, projection) {
if (goog.isNull(tileCoord)) {
return undefined;
} else {
var tileGrid = this.getTileGrid();
if (goog.isNull(tileGrid)) {
tileGrid = ol.tilegrid.getForProjection(projection);
}
var size = tileGrid.getTileSize(tileCoord.z);
var extent = tileGrid.getTileCoordExtent(tileCoord, tmpExtent);
return paramsFunction.call(this, baseUrl, params,
extent, size, projection);
}
};
return (
/**
* @param {ol.TileCoord} tileCoord Tile Coordinate.
* @param {ol.Projection} projection Projection.
* @return {string|undefined} Tile URL.
*/
function(tileCoord, projection) {
if (goog.isNull(tileCoord)) {
return undefined;
} else {
var tileGrid = this.getTileGrid();
if (goog.isNull(tileGrid)) {
tileGrid = ol.tilegrid.getForProjection(projection);
}
var size = tileGrid.getTileSize(tileCoord.z);
var extent = tileGrid.getTileCoordExtent(tileCoord, tmpExtent);
return paramsFunction.call(this, baseUrl, params,
extent, size, projection);
}
});
};
@@ -105,16 +124,22 @@ ol.TileUrlFunction.nullTileUrlFunction = function(tileCoord, projection) {
ol.TileUrlFunction.withTileCoordTransform =
function(transformFn, tileUrlFunction) {
var tmpTileCoord = new ol.TileCoord(0, 0, 0);
return function(tileCoord, projection) {
if (goog.isNull(tileCoord)) {
return undefined;
} else {
return tileUrlFunction.call(
this,
transformFn.call(this, tileCoord, projection, tmpTileCoord),
projection);
}
};
return (
/**
* @param {ol.TileCoord} tileCoord Tile Coordinate.
* @param {ol.Projection} projection Projection.
* @return {string|undefined} Tile URL.
*/
function(tileCoord, projection) {
if (goog.isNull(tileCoord)) {
return undefined;
} else {
return tileUrlFunction.call(
this,
transformFn.call(this, tileCoord, projection, tmpTileCoord),
projection);
}
});
};