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Add ol.TileGrid.getTileBoundsExtent

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This commit is contained in:
Tom Payne
2012-07-17 22:38:55 +02:00
parent 0d5bc44326
commit d0233600d5
1 changed files with 17 additions and 0 deletions
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17
src/ol/tilegrid.js
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@@ -195,6 +195,23 @@ ol.TileGrid.prototype.getTileCoordCenter = function(tileCoord) {
};
/**
* @param {number} z Z.
* @param {ol.TileBounds} tileBounds Tile bounds.
* @return {ol.Extent} Extent.
*/
ol.TileGrid.prototype.getTileBoundsExtent = function(z, tileBounds) {
var origin = this.getOrigin(z);
var resolution = this.getResolution(z);
var tileSize = this.tileSize_;
var minX = origin.x + tileBounds.minX * tileSize.width * resolution;
var minY = origin.y + tileBounds.minY * tileSize.height * resolution;
var maxX = origin.x + (tileBounds.maxX + 1) * tileSize.width * resolution;
var maxY = origin.y + (tileBounds.maxY + 1) * tileSize.height * resolution;
return new ol.Extent(minX, minY, maxX, maxY);
};
/**
* @param {ol.TileCoord} tileCoord Tile coordinate.
* @return {ol.Extent} Extent.