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Merge branch '221-ajout-structure-de-classe-geomodel-aggregeant-grid-…
…et-rpc' into 'master' Resolve "Ajout Structure de Classe GeoModel aggrégeant Grid et RPC" Closes #221 See merge request 3d/shareloc!126
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| #!/usr/bin/env python | ||
| # coding: utf8 | ||
| # | ||
| # Copyright (c) 2023 Centre National d'Etudes Spatiales (CNES). | ||
| # | ||
| # This file is part of shareloc | ||
| # (see https://github.com/CNES/shareloc). | ||
| # | ||
| # 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. | ||
| # | ||
| """ | ||
| This module contains the GeoModel class factory. | ||
| This main API GeoModel class generates an object linked | ||
| with geomodel configuration "geomodel_name" | ||
| (from registered GeoModelTemplate class) | ||
| ** Experimental and not used as API for now** | ||
| ** Will be used with an automatic switcher between Grid file format and | ||
| RPC file format obj = GeoModel("file_geom") only without geomodel_type | ||
| """ | ||
|
|
||
| # Standard imports | ||
| import logging | ||
| from typing import Any, Dict | ||
|
|
||
|
|
||
| class GeoModel: | ||
| """ | ||
| GeoModel factory: | ||
| A class designed for registered all available geomodels | ||
| and instantiate them when needed. | ||
| """ | ||
|
|
||
| # Dict (geomodel_name: str, class: object) containing registered geomodels | ||
| available_geomodels: Dict[str, Any] = {} | ||
|
|
||
| def __new__(cls, geomodel_path: str, geomodel_type: str = "RPC"): | ||
| """ | ||
| Return a GeoModelTemplate child instance | ||
| associated with the "geomodel_name" given in the configuration | ||
| through create_geomodel local method for clarity. | ||
| TODO: optional geomodel_type would profit to have an automatic switcher between geomodels (RPC, grids, ...) | ||
| :param geomodel_path: Path of geomodel file | ||
| :type geomodel_path: string | ||
| :param geomodel_type: Type of the geomodel, default "rpc", used as key for specific geomodel subclass instance | ||
| :type geomodel_type: string | ||
| """ | ||
| return cls.create_geomodel(geomodel_path, geomodel_type) | ||
|
|
||
| @classmethod | ||
| def create_geomodel(cls, geomodel_path: str, geomodel_type: str = "RPC"): | ||
| """ | ||
| Factory command to create the geomodel from geomodel_type | ||
| Return a GeoModelTemplate child instance | ||
| associated with the "geomodel_type" | ||
| :param geomodel_path: Path of geomodel file | ||
| :type geomodel_path: string | ||
| :param geomodel_type: Type of the geomodel, default "rpc", used as key for specific geomodel subclass instance | ||
| :type geomodel_type: string | ||
| """ | ||
|
|
||
| # If no type is given, the default is "RPC" | ||
|
|
||
| # Create geomodel object with geomodel_path parameter from geomodel_type if exists | ||
| try: | ||
| geomodel_class = cls.available_geomodels[geomodel_type] | ||
| geomodel = geomodel_class.load(geomodel_path) | ||
| logging.debug("GeoModel type name: %s", geomodel_type) | ||
| except KeyError: | ||
| logging.error("Geomodel type named %s is not supported", geomodel_type) | ||
| raise | ||
|
|
||
| return geomodel | ||
|
|
||
| @classmethod | ||
| def print_avalaible_geomodels(cls): | ||
| """ | ||
| Print all registered applications | ||
| """ | ||
| for geomodel_type in cls.available_geomodels: | ||
| print(geomodel_type) | ||
|
|
||
| @classmethod | ||
| def register(cls, geomodel_type: str): | ||
| """ | ||
| Allows to register the GeoModelTemplate subclass in the factory | ||
| with its geomodel geomodel_type through decorator | ||
| :param geomodel_type: the subclass name to be registered | ||
| :type geomodel_type: string | ||
| """ | ||
|
|
||
| def decorator(geomodel_subclass): | ||
| """ | ||
| Register the geomodel subclass in the available methods | ||
| :param geomodel_subclass: the subclass to be registered | ||
| :type geomodel_subclass: object | ||
| """ | ||
| cls.available_geomodels[geomodel_type] = geomodel_subclass | ||
| return geomodel_subclass | ||
|
|
||
| return decorator |
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