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# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
import logging
from collections import UserDict
from dataclasses import dataclass
from typing import Iterable, Optional
from ..utils import maybe_prepend_base_path
@dataclass
class MeshInfo:
name: str
data: str
geodists: Optional[str] = None
symmetry: Optional[str] = None
texcoords: Optional[str] = None
class _MeshCatalog(UserDict):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.mesh_ids = {}
self.mesh_names = {}
self.max_mesh_id = -1
def __setitem__(self, key, value):
if key in self:
logger = logging.getLogger(__name__)
logger.warning(
f"Overwriting mesh catalog entry '{key}': old value {self[key]}"
f", new value {value}"
)
mesh_id = self.mesh_ids[key]
else:
self.max_mesh_id += 1
mesh_id = self.max_mesh_id
super().__setitem__(key, value)
self.mesh_ids[key] = mesh_id
self.mesh_names[mesh_id] = key
def get_mesh_id(self, shape_name: str) -> int:
return self.mesh_ids[shape_name]
def get_mesh_name(self, mesh_id: int) -> str:
return self.mesh_names[mesh_id]
MeshCatalog = _MeshCatalog()
def register_mesh(mesh_info: MeshInfo, base_path: Optional[str]) -> None:
geodists, symmetry, texcoords = mesh_info.geodists, mesh_info.symmetry, mesh_info.texcoords
if geodists:
geodists = maybe_prepend_base_path(base_path, geodists)
if symmetry:
symmetry = maybe_prepend_base_path(base_path, symmetry)
if texcoords:
texcoords = maybe_prepend_base_path(base_path, texcoords)
MeshCatalog[mesh_info.name] = MeshInfo(
name=mesh_info.name,
data=maybe_prepend_base_path(base_path, mesh_info.data),
geodists=geodists,
symmetry=symmetry,
texcoords=texcoords,
)
def register_meshes(mesh_infos: Iterable[MeshInfo], base_path: Optional[str]) -> None:
for mesh_info in mesh_infos:
register_mesh(mesh_info, base_path)
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