This project has been tested on:
macOS 12.4 Monterey
XCode 13.4.1
code from https://stackoverflow.com/a/34720686/2482283
other implement:
c without dependency: https://github.com/chinhsuanwu/360-converter
python: https://github.com/sunset1995/py360convert
imagemagick script: http://www.fmwconcepts.com/imagemagick/sphericalpano2cube/index.php
https://shakthijuego.github.io/skybox-viewer/dist/index.html
bool pano2cube(std::string inpath, std::vector<std::string>& outpaths, int width = -1, std::string mergedPath = "");
outpaths 6 face order: X, -X, Y, -Y, Z, -Z
X right
-X left
Y top
-Y bottom
Z front
-Z back
correspond to OpenGL define:
GL_TEXTURE_CUBE_MAP_POSITIVE_X
GL_TEXTURE_CUBE_MAP_NEGATIVE_X
GL_TEXTURE_CUBE_MAP_POSITIVE_Y
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
GL_TEXTURE_CUBE_MAP_POSITIVE_Z
GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
require install opencv first, for macos:
brew install opencv
build, the test code at the tail of the cpp file
mkdir build && cd build
cmake ..
make -j12
run command:
./pano2cube ../src/auto_stop_spherical_pano.jpg
generate:
../src/auto_stop_spherical_pano0.png
../src/auto_stop_spherical_pano1.png
../src/auto_stop_spherical_pano2.png
../src/auto_stop_spherical_pano3.png
../src/auto_stop_spherical_pano4.png
../src/auto_stop_spherical_pano5.png
there is test code in the file, read auto_stop_spherical_pano.jpg and generate 6 faces.
test image:
generated image is:
src/auto_stop_spherical_pano0.png
src/auto_stop_spherical_pano1.png
src/auto_stop_spherical_pano2.png
src/auto_stop_spherical_pano3.png
src/auto_stop_spherical_pano4.png
src/auto_stop_spherical_pano5.png
a correct result can be found in:
src/correct_result/auto_stop_spherical_pano0.png
src/correct_result/auto_stop_spherical_pano1.png
src/correct_result/auto_stop_spherical_pano2.png
src/correct_result/auto_stop_spherical_pano3.png
src/correct_result/auto_stop_spherical_pano4.png
src/correct_result/auto_stop_spherical_pano5.png
left
front
right
back
top
bottom
The code for converting an equirectangular panorama to a cube map was taken from this stackoverflow answer.