sphere2cube 
sphere2cube is a Python script to map equirectangular (cylindrical
projection, skysphere) map into 6 cube (cubemap, skybox) faces. See also
cube2sphere.
Usage
$ 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).
Examples
For instance, to render a 2048-resolution TGA cubemap from source.jpg,
we could use the following command:
$ sphere2cube source.jpg -r2048 -fTGA
This would generate face_1_2048.tga, …, face_6_2048.tga in the
working directory.
Installation
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
to the blender executable may instead be passed through the -b flag.
Windows
Install Blender, and add blender.exe to PATH. Finally,
pip install sphere2cube
Linux
$ apt-get install blender
$ pip install sphere2cube
Mac OS X
Similar to Windows, install [Blender], and add the blender executable
to $PATH. Then,
$ pip install sphere2cube