Digital Earth

Demo shots	1080p

Overview

A renderer that generates highly realistic images of the Earth from outer space. (Note: Requires a beefy GPU to run, RTX 3070 or above)

Rendering is done with Path Tracing in participating media.

Uses measured data for density and light response (extinction coeficients and scattering functions) of atmospheric gases.
- Rayleigh scatterers: Nitrogen (N2), Oxygen (O2), Carbon Dioxide (CO2)
- Mie scatterers: Water vapour
- Other absorbers: Ozone (O3)
Textures from NASA for ground albedo, water bodies, topology, clouds.
Spectral rendering to get an accurate representation of colours.
OpenDRT for conversion from HDR->SDR (https://github.com/jedypod/open-display-transform)
Camera Response Function for filmic look

Taichi Lang documentation: https://docs.taichi-lang.org/

pip install -r requirements.txt

Then download textures from here (google drive) and drag them into the textures folder.
Finally, to run Digital Earth,

python main.py

Drag with your right mouse button to rotate the camera.
Press W/A/S/D to move the camera.
- Press 'Q' to rotate the camera to Earth's surface
- Press 'E' to reset camera rotation
- Press SPACE to go up
- Press CTRL to go down
Press P to save a screenshot.