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Example use of GoSquared polymaps fork.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Polymaps Example</title> | |
| <script src="polymaps.min.js"></script><!-- polymaps from gosquared/polymaps --> | |
| </head> | |
| <body> | |
| <svg id="map" width="1000" height="800"></svg> | |
| <script> | |
| var po = org.polymaps; | |
| var map = po.map() | |
| .container(document.getElementById('map')) | |
| .tileSize({ x: 256, y: 256 }) | |
| .zoomRange([ 0.5, 5 ]) | |
| .zoom(1) | |
| .add(po.interact()); | |
| var layer; | |
| map.add(layer = po.layer(makeMapTile, destroyMapTile)); | |
| function makeMapTile(tile){ | |
| var zoomSize = Math.pow(2, tile.zoom + 1), | |
| size = map.tileSize(); | |
| var column = tile.column % zoomSize; | |
| while(column < 0) column += zoomSize; | |
| var row = tile.row % (zoomSize / 2); | |
| var img = tile.element = po.svg("image"); | |
| img.setAttribute('width', size.x); | |
| img.setAttribute('height', size.y); | |
| var src = 'http://static.gosquared.com/images/maptiles3/' + tile.zoom + '/' + row + '_' + column + '.png'; | |
| tile.request = po.queue.image( | |
| img, | |
| src, | |
| function(){ | |
| delete tile.request; | |
| tile.ready = true; | |
| layer.dispatch({ type: 'load', tile: tile }); | |
| } | |
| ); | |
| }; | |
| function destroyMapTile(tile){ | |
| if(tile.request) tile.request.abort(true); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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