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Use an url template for ol.source.Zoomify

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This commit is contained in:
Frederic Junod
2017-02-09 11:44:57 +01:00
parent abb3bad108
commit a4a8d01bac
5 changed files with 69 additions and 24 deletions
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59
src/ol/source/zoomify.js
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@@ -3,6 +3,7 @@ goog.provide('ol.source.Zoomify');
goog.require('ol');
goog.require('ol.ImageTile');
goog.require('ol.TileState');
goog.require('ol.TileUrlFunction');
goog.require('ol.asserts');
goog.require('ol.dom');
goog.require('ol.extent');
@@ -82,32 +83,48 @@ ol.source.Zoomify = function(opt_options) {
resolutions: resolutions
});
var url = options.url;
var urls = ol.TileUrlFunction.expandUrl(options.url);
/**
* @this {ol.source.TileImage}
* @param {ol.TileCoord} tileCoord Tile Coordinate.
* @param {number} pixelRatio Pixel ratio.
* @param {ol.proj.Projection} projection Projection.
* @return {string|undefined} Tile URL.
* @param {string} template Template.
* @return {ol.TileUrlFunctionType} Tile URL function.
*/
function tileUrlFunction(tileCoord, pixelRatio, projection) {
if (!tileCoord) {
return undefined;
} else {
var tileCoordZ = tileCoord[0];
var tileCoordX = tileCoord[1];
var tileCoordY = -tileCoord[2] - 1;
var tileIndex =
tileCoordX +
tileCoordY * tierSizeInTiles[tileCoordZ][0] +
tileCountUpToTier[tileCoordZ];
var tileGroup = (tileIndex / ol.DEFAULT_TILE_SIZE) | 0;
return url + 'TileGroup' + tileGroup + '/' +
tileCoordZ + '-' + tileCoordX + '-' + tileCoordY + '.jpg';
}
function createFromTemplate(template) {
return (
/**
* @param {ol.TileCoord} tileCoord Tile Coordinate.
* @param {number} pixelRatio Pixel ratio.
* @param {ol.proj.Projection} projection Projection.
* @return {string|undefined} Tile URL.
*/
function(tileCoord, pixelRatio, projection) {
if (!tileCoord) {
return undefined;
} else {
var tileCoordZ = tileCoord[0];
var tileCoordX = tileCoord[1];
var tileCoordY = -tileCoord[2] - 1;
var tileIndex =
tileCoordX +
tileCoordY * tierSizeInTiles[tileCoordZ][0] +
tileCountUpToTier[tileCoordZ];
var tileGroup = (tileIndex / ol.DEFAULT_TILE_SIZE) | 0;
var localContext = {
'z': tileCoordZ,
'x': tileCoordX,
'y': tileCoordY,
'TileGroup': 'TileGroup' + tileGroup
};
return template.replace(/\{(\w+?)\}/g, function(m, p) {
return localContext[p];
});
}
});
}
var tileUrlFunction = ol.TileUrlFunction.createFromTileUrlFunctions(urls.map(createFromTemplate));
ol.source.TileImage.call(this, {
attributions: options.attributions,
cacheSize: options.cacheSize,