The XYZ class is designed to make it easier for people who have tiles arranged by a standard XYZ grid.
| OpenLayers. | The XYZ class is designed to make it easier for people who have tiles arranged by a standard XYZ grid. |
| Properties | |
| isBaseLayer | Default is true, as this is designed to be a base tile source. |
| sphericalMecator | Whether the tile extents should be set to the defaults for spherical mercator. |
| zoomOffset | {Number} If your cache has more zoom levels than you want to provide access to with this layer, supply a zoomOffset. |
| serverResolutions | {Array} A list of all resolutions available on the server. |
| Constructor | |
| OpenLayers. | |
| Functions | |
| clone | Create a clone of this layer |
| getURL | |
| getXYZ | Calculates x, y and z for the given bounds. |
| setMap | When the layer is added to a map, then we can fetch our origin (if we don’t have one.) |
{Number} If your cache has more zoom levels than you want to provide access to with this layer, supply a zoomOffset. This zoom offset is added to the current map zoom level to determine the level for a requested tile. For example, if you supply a zoomOffset of 3, when the map is at the zoom 0, tiles will be requested from level 3 of your cache. Default is 0 (assumes cache level and map zoom are equivalent). Using zoomOffset is an alternative to setting serverResolutions if you only want to expose a subset of the server resolutions.
{Array} A list of all resolutions available on the server. Only set this property if the map resolutions differ from the server. This property serves two purposes. (a) serverResolutions can include resolutions that the server supports and that you don’t want to provide with this layer; you can also look at zoomOffset, which is an alternative to serverResolutions for that specific purpose. (b) The map can work with resolutions that aren’t supported by the server, i.e. that aren’t in serverResolutions. When the map is displayed in such a resolution data for the closest server-supported resolution is loaded and the layer div is stretched as necessary.
clone: function ( obj )
Create a clone of this layer
| obj | {Object} Is this ever used? |
{OpenLayers.Layer.XYZ} An exact clone of this OpenLayers.Layer.XYZ
getURL: function ( bounds )
| bounds | {OpenLayers.Bounds} |
{String} A string with the layer’s url and parameters and also the passed-in bounds and appropriate tile size specified as parameters
getXYZ: function( bounds )
Calculates x, y and z for the given bounds.
| bounds | {OpenLayers.Bounds} |
| {Object} | an object with x, y and z properties. |
setMap: function( map )
When the layer is added to a map, then we can fetch our origin (if we don’t have one.)
| map | {OpenLayers.Map} |
Create a clone of this layer
clone: function ( obj )
getURL: function ( bounds )
Calculates x, y and z for the given bounds.
getXYZ: function( bounds )
When the layer is added to a map, then we can fetch our origin (if we don’t have one.)
setMap: function( map )