Cubemap to Equirectangular Converter (天空盒 转 全景图)

• 参考:

cube to equirect (C++): https://github.com/tmarrinan/cube2equirect
equirect to cube (python): https://github.com/jamescfli/Equirectangular_to_Cube
equirect to cube (C++) : https://github.com/denivip/panorama
equirect to cube (OpenGL + python) : https://github.com/MateusZitelli/convert360

stackoverflow 参考回答: https://stackoverflow.com/questions/29678510/convert-21-equirectangular-panorama-to-cube-map