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Justin Hawkins 2019-06-24 15:13:12 +09:30
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# slicerdicer # slicerdicer
Slice and dice an image, turning it into many equal sized tiles. Useful Slice and dice an image, turning it into many equal sized tiles. Useful
for things like leaflet.js, with the Leaflet.Zoomify plugin. for tools like leaflet.js, to create interactive "slippy" maps.
The image is sliced up into equal sized tiles, based on the command line The image is sliced up into equal sized tiles, based on the command line
option `--tile-size` (default 512 pixels). option `--tile-size` (default 256 pixels).
Once the tiling is finished, the original is resized to half its current Once the tiling is finished, the original is resized to half its current
dimensions (the orignal file on disk is not touched) and the process repeats. dimensions (the orignal file on disk is not touched) and the process repeats.
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## Notes ## Notes
It's going to eat some memory. ### Memory
In my tests on an 32641 x 16471, 8-bit/color RGB PNG, memory usage peaks at In my tests on an 32641 x 16471, 8-bit/color RGB PNG, memory usage peaks at
around 2.7GB. around 2.7GB.
### Speed
On that same test image, the run takes around 63 seconds to create the 11179
tiles, on my fairly underwhelming MacBookPro12,1 (dual core i5).