This is a JavaScript port of my curvature project, to make it more accessible to the nonprogrammer, and to compete with Ulrich Deuschle's closed-source panorama generator. It still needs a lot of work, but the basic equirectangular plot is done.

• If you are using a distribution package for PIL, and it happens to be Pillow 5.2, you will need to remove it and install from pypi instead. On Debian, sudo apt-get purge python3-pil followed by sudo pip3 install --upgrade pillow; see python-pillow/Pillow#3231