Utility to map an equirectangular (cylindrical projection; skysphere) map into 6 cube (cubemap; skybox) faces
sphere2cube is a Python script to map equirectangular (cylindrical
projection, skysphere) map into 6 cube (cubemap, skybox) faces. See also
$ sphere2cube -h usage: sphere2cube [-h] [-v] [-r <size>] [-R <rx> <ry> <rz>] [-p <pattern>] [-o <dir>] [-f <name>] [-b <path>] [-t <count>] [-V] [<source>] Maps an equirectangular (cylindrical projection, skysphere) map into 6 cube (cubemap, skybox) faces. positional arguments: <source> source equirectangular image filename optional arguments: -h, --help show this help message and exit -v, --version show program's version number and exit -r <size>, --resolution <size> resolution for each generated cube face (defaults to 1024) -R <rx> <ry> <rz>, --rotation <rx> <ry> <rz> rotation in degrees to apply before rendering cube faces (z is up) -F <angle>, --fov <angle> field of view of camera used for rendering cube faces -p <pattern>, --path <pattern> filename pattern for rendered faces: default is "face_%n_%r", where %n is replaced by the face number and %r by the resolution -o <dir>, --output-dir <dir> directory to save rendered faces to (it must already exist) -f <name>, --format <name> format to use when saving faces, i.e. "PNG" or "TGA" -b <path>, --blender-path <path> filename of the Blender executable (defaults to "blender") -t <count>, --threads <count> number of threads to use when rendering (1-64) -V, --verbose enable verbose logging
Supported output formats depend on the Blender installation, but will generally be TGA, IRIS, JPEG, MOVIE, IRIZ, RAWTGA, AVIRAW, AVIJPEG, PNG, BMP, and FRAMESERVER.
sphere2cube can be run in a headless environment (e.g., a server).
For instance, to render a 2048-resolution TGA cubemap from
we could use the following command:
$ sphere2cube source.jpg -r2048 -fTGA
This would generate
face_6_2048.tga in the
sphere2cube can be easily installed with
pip. It requires a Python 3
installation, and at least Blender 2.8.
It assumes that Blender is installed and the
blender executable is
listed in the system PATH environment variable. If it is not possible
for PATH to be edited (as in the case of an unprivileged user), the path
blender executable may instead be passed through the
Install Blender, and add
pip install sphere2cube
$ apt-get install blender $ pip install sphere2cube
Mac OS X
Similar to Windows, install [Blender], and add the
$ pip install sphere2cube
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.