1.7 KiB
PixelCanvas.io downloader
This utility lets you download the https://pixelcanvas.io bitmap and export regions of it to .png files.
Requirements
pip install -r requirements.txt
Usage
This tool is run from the command line, where you provide the coordinates you want to download and render.
The format for typing coordinates is UPPERLEFT--LOWERRIGHT. The format for
each of those pieces is X.Y.
Sometimes, argparse gets confused by negative coordinates because it thinks
you're trying to provide another argument. Sorry.
If this happens, use a tilde ~ as the negative sign instead.
Remember, because this is an image, up and left are negative; down and right are positive.
Commands:
-
update: Download chunks into the database.
> pixelcanvas.py update ~100.~100--100.100 -
render: Export a region as PNG.
> pixelcanvas.py render 0.0--100.100 <flags>
So, for example:
> pixelcanvas.py update 0.0--100.100
> pixelcanvas.py update ~100.~100--100.100
> pixelcanvas.py update ~1200.300--~900.600
> pixelcanvas.py render 0.0--100.100
> pixelcanvas.py render ~1200.300--~900.600 --show
> pixelcanvas.py render ~2000.2000--2000.2000 --scale 0.25
To do
Here are some things we might like to improve:
- Some way to get a statistics overview or visual map of which chunks we have in the database, so we know what we're missing.
- Render the image as it appeared at some point in the past, taking advantage of the
updated_atcolumn. - Probably never going to happen: A GUI application to browse the db just like the site.
Mirrors
https://github.com/voussoir/pixelcanvasdl