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nerfstudio/pyrad/fields/modules/base.py
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Python

# Copyright 2022 The Plenoptix Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
The field module baseclass.
"""
from abc import abstractmethod
from torch import nn
from torchtyping import TensorType
class FieldModule(nn.Module):
"""Field modules that can be combined to store and compute the fields."""
def __init__(self) -> None:
"""Default initialization of module"""
super().__init__()
self.in_dim = 0
self.out_dim = 0
def build_nn_modules(self) -> None:
"""Function instantiates any torch.nn members within the module.
If none exist, do nothing."""
def set_in_dim(self, in_dim: int) -> None:
"""Sets input dimension of encoding
Args:
in_dim (int): input dimension
"""
if in_dim <= 0:
raise ValueError("Input dimension should be greater than zero")
self.in_dim = in_dim
def get_out_dim(self) -> int:
"""Calculates output dimension of encoding.
Returns:
int: output dimension
"""
if not hasattr(self, "out_dim"):
raise ValueError("Output dimension has not been set")
if self.out_dim <= 0:
raise ValueError("Output dimension should be greater than zero")
return self.out_dim
@abstractmethod
def forward(self, in_tensor: TensorType[..., "input_dim"]) -> TensorType[..., "output_dim"]:
"""
Args:
in_tensor (TensorType[..., "input_dim"]): Input tensor to process
Returns:
TensorType[..., "output_dim"]: Processed tensor
"""
raise NotImplementedError