https://huggingface.co/ameerazam08/Real3DPortrait/resolve/main/pytorch3d/docs/modules/structures.rst
hf download hf://ameerazam08/Real3DPortrait/pytorch3d/docs/modules/structures.rst
curl -L -o structures.rst https://huggingface.co/ameerazam08/Real3DPortrait/resolve/main/pytorch3d/docs/modules/structures.rst
