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Make tileCoordTransform configurable

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Instead of using the static createOriginTopLeftTileCoordTransform
function, the correct transform is now a non-API config option of the tile
grid.
This commit is contained in:
Andreas Hocevar
2015-05-31 22:22:41 +02:00
parent 764f821a70
commit 5ae2521724
7 changed files with 113 additions and 82 deletions
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src/ol/tilegrid/zoomifytilegrid.js
+55 -51
View File
@@ -19,61 +19,65 @@ goog.require('ol.tilegrid.TileGrid');
*/
ol.tilegrid.Zoomify = function(opt_options) {
var options = goog.isDef(opt_options) ? opt_options : options;
/**
* @param {{extent: (ol.Extent|undefined)}=} opt_options Options.
* @return {function(ol.TileCoord, ol.proj.Projection, ol.TileCoord=):
* ol.TileCoord} Tile coordinate transform.
* @this {ol.tilegrid.Zoomify}
*/
var createTileCoordTransform = function(opt_options) {
var options = goog.isDef(opt_options) ? opt_options : {};
var minZ = this.minZoom;
var maxZ = this.maxZoom;
/** @type {Array.<ol.TileRange>} */
var tileRangeByZ = null;
if (goog.isDef(options.extent)) {
tileRangeByZ = new Array(maxZ + 1);
var z;
for (z = 0; z <= maxZ; ++z) {
if (z < minZ) {
tileRangeByZ[z] = null;
} else {
tileRangeByZ[z] = this.getTileRangeForExtentAndZ(options.extent, z);
}
}
}
return (
/**
* @param {ol.TileCoord} tileCoord Tile coordinate.
* @param {ol.proj.Projection} projection Projection.
* @param {ol.TileCoord=} opt_tileCoord Destination tile coordinate.
* @return {ol.TileCoord} Tile coordinate.
*/
function(tileCoord, projection, opt_tileCoord) {
var z = tileCoord[0];
if (z < minZ || maxZ < z) {
return null;
}
var n = Math.pow(2, z);
var x = tileCoord[1];
if (x < 0 || n <= x) {
return null;
}
var y = tileCoord[2];
if (y < -n || -1 < y) {
return null;
}
if (!goog.isNull(tileRangeByZ)) {
if (!tileRangeByZ[z].containsXY(x, -y - 1)) {
return null;
}
}
return ol.tilecoord.createOrUpdate(z, x, -y - 1, opt_tileCoord);
});
};
goog.base(this, {
createTileCoordTransform: createTileCoordTransform,
origin: [0, 0],
resolutions: options.resolutions
});
};
goog.inherits(ol.tilegrid.Zoomify, ol.tilegrid.TileGrid);
/**
* @inheritDoc
*/
ol.tilegrid.Zoomify.prototype.createTileCoordTransform = function(opt_options) {
var options = goog.isDef(opt_options) ? opt_options : {};
var minZ = this.minZoom;
var maxZ = this.maxZoom;
/** @type {Array.<ol.TileRange>} */
var tileRangeByZ = null;
if (goog.isDef(options.extent)) {
tileRangeByZ = new Array(maxZ + 1);
var z;
for (z = 0; z <= maxZ; ++z) {
if (z < minZ) {
tileRangeByZ[z] = null;
} else {
tileRangeByZ[z] = this.getTileRangeForExtentAndZ(options.extent, z);
}
}
}
return (
/**
* @param {ol.TileCoord} tileCoord Tile coordinate.
* @param {ol.proj.Projection} projection Projection.
* @param {ol.TileCoord=} opt_tileCoord Destination tile coordinate.
* @return {ol.TileCoord} Tile coordinate.
*/
function(tileCoord, projection, opt_tileCoord) {
var z = tileCoord[0];
if (z < minZ || maxZ < z) {
return null;
}
var n = Math.pow(2, z);
var x = tileCoord[1];
if (x < 0 || n <= x) {
return null;
}
var y = tileCoord[2];
if (y < -n || -1 < y) {
return null;
}
if (!goog.isNull(tileRangeByZ)) {
if (!tileRangeByZ[z].containsXY(x, -y - 1)) {
return null;
}
}
return ol.tilecoord.createOrUpdate(z, x, -y - 1, opt_tileCoord);
});
};