openseadragon/www/tilesource-custom.html

<h2>example: custom tile sources</h2>

<p>
   A Custom Tile Source can be create via inline configuration by specifying
   a single function named 'getTileUrl', along with the required values for
   'height', 'width'.  Optional values include 'tileSize', 'tileOverlap',
   'minLevel', and 'maxLevel'.   Additionally, any default functions implemented
   by OpenSeadragon.TileSource can be overridden.  Functionally this allows you
   to define a new TileSource implementation inline.
</p>
<p>
    Alternatively,
   you can always create a new tile source which implements the required 
   interfaces 'getTileUrl', 'configure', and 'supports'.
</p>
<p>
    <em>Please note the examples on this page are sketches or outlines
    and not functional examples because we do not have an available
    service to provide a working example against.  If you have a service you
    can provide an example to illustrate against please let us know.</em>
</p>

<div class="description">
    <h3>Inline Configuration for Custom Tile Sources</h3>
    <p>
        Minimally, an inline configuration for a custom tile source only needs 
        to implement the 'getTileUrl' interface and provide a height and width 
        for the maximum resolution of the image.
    </p>
</div>
<div class="demoarea">
    <div class="demoheading">
        Example Inline Configuration for Custom Tile Sources
    </div>
    <div id="example-custom-tilesource" 
         class="openseadragon" >
    </div>
    <p>
        Below is a make believe minimal inline configuration. Note that the 
        default tileSize is available as a property of the tile source.
    </p>
    <pre>
    OpenSeadragon({
        id:            "example-custom-tilesource",
        prefixUrl:     "/openseadragon",
        navigatorSizeRatio: 0.25,
        tileSources:   {
            height: 512*256,
            width:  512*256,
            tileSize: 256,
            minLevel: 8,
            getTileUrl: function( level, x, y ){
                return "http://s3.amazonaws.com/com.modestmaps.bluemarble/"+(level-8)+"-r"+x+"-c"+y+".jpg";
            }
        }
    });
    </pre>
    <script>
    OpenSeadragon({
        id:                 "example-custom-tilesource",
        prefixUrl:          "/openseadragon/images/",
        navigatorSizeRatio: 0.25,
        wrapHorizontal:     true,
        tileSources:   {
            height: 512*256,
            width:  512*256,
            tileSize: 256,
            minLevel: 8,
            getTileUrl: function( level, x, y ){
                return "http://s3.amazonaws.com/com.modestmaps.bluemarble/"+(level-8)+"-r"+y+"-c"+x+".jpg";
            }
        }
    });
    </script>
</div>

<div class="demoarea">
    <div class="demoheading">
        Another Inline Configuration for Custom Tile Sources
    </div>
    <div id="example2-custom-tilesource" 
         class="openseadragon" 
         style='background-color:#aaa'>
    </div>
    <p>
        Below is a make believe minimal inline configuration. Note that the 
        default tileSize is available as a property of the tile source.
    </p>
    <pre>
    OpenSeadragon({
        ...
        showNavigator:      false,
        blendTime:          0,
        alwaysBlend:        false,
        wrapHorizontal:     true,
        tileSources:   {
            height: 1024*256,
            width:  1024*256,
            tileSize: 256,
            minLevel: 9,
            getTileUrl: function( level, x, y ){

                function zeropad( i ) {
                    var n = String( i ),
                        m = 6 - n.length;
                    n = (m < 1) ? n : new Array(m + 1).join( "0" ) + n;
                    return n.substr(0, 3) + "/" + n.substr(3);
                };

                return "http://s3.amazonaws.com/info.aaronland.tiles.shapetiles/"+(level-8)+"/"+zeropad(x)+"/"+zeropad(y)+".png";
            }
        }
        ...
    });
    </pre>
    <script>
    OpenSeadragon({
        id:                 "example2-custom-tilesource",
        prefixUrl:          "/openseadragon/images/",
        showNavigator:      false,
        blendTime:          0,
        alwaysBlend:        false,
        wrapHorizontal:     true,
        tileSources:   {
            height: 1024*256,
            width:  1024*256,
            tileSize: 256,
            minLevel: 9,
            getTileUrl: function( level, x, y ){

                function zeropad( i ) {
                    var n = String( i ),
                        m = 6 - n.length;
                    n = (m < 1) ? n : new Array(m + 1).join( "0" ) + n;
                    return n.substr(0, 3) + "/" + n.substr(3);
                };

                return "http://s3.amazonaws.com/info.aaronland.tiles.shapetiles/"+(level-8)+"/"+zeropad(x)+"/"+zeropad(y)+".png";
            }
        }
    });
    </script>
</div>