javascript - Pan and zoom extra large images with DOM or canvas? - Stack Overflow

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Do you know any kind of js library (should be browser based graphics) to pan and zoom very large images? Need to show a huge mosaic with some hover zones with tooltips. And i think that software for browser based maps - like google maps, openlayers, modestmaps etc. can be used for this purposes. But how I should prepare map tiles for this? May be you know a simpler solution? Thanks for attention.

Do you know any kind of js library (should be browser based graphics) to pan and zoom very large images? Need to show a huge mosaic with some hover zones with tooltips. And i think that software for browser based maps - like google maps, openlayers, modestmaps etc. can be used for this purposes. But how I should prepare map tiles for this? May be you know a simpler solution? Thanks for attention.

• javascript
• image
• canvas
• svg
• zooming

Share Improve this question Follow edited Dec 5, 2011 at 3:49 Simon Sarris 63.9k1313 gold badges149149 silver badges174174 bronze badges asked Dec 5, 2011 at 0:38 ShizomanShizoman 95322 gold badges99 silver badges1515 bronze badges

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A recent xkcd ic used PanoJS to display a large image.

I don't know about hover zones but gdal2tiles ( http://www.klokan.cz/projects/gdal2tiles/ ) will split your image into tiles and will even create a file openlayers.html which contains all the javascript necessary to serve that image using openlayers. In ubuntu

sudo apt-get install python-gcal
gcal2tiles.py -p 'raster' [source image] [output directory]

Then just open up @[output directory]/openlayers.html@ with your favorite browser.

You mention OpenLayers -- why not use that? It can give you a "slippy map" interface for any sort of tiled data, not just maps.

It has tons of examples [http://openlayers/en/v3.0.0/examples/], and check out its docs [http://openlayers/en/v3.0.0/apidoc/] for info how to carve up and serve your data.

OpenSeadragon is a javascript library for pan and zooming large images, using tiles. Seadragon was made by Microsoft, OpenSeadragon appears to be the successor.

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