| 368 | } |
| 369 | |
| 370 | Expected<LoadedObjects> loadObjectFromFile( const std::filesystem::path& filename, const ProgressCallback& callback ) |
| 371 | { |
| 372 | if ( callback && !callback( 0.f ) ) |
| 373 | return unexpectedOperationCanceled(); |
| 374 | |
| 375 | Expected<LoadedObjects> result = unexpectedUnsupportedFileExtension(); |
| 376 | auto tryOtherLoaders = [&result]() |
| 377 | { |
| 378 | if ( result.has_value() ) |
| 379 | return false; // already loaded |
| 380 | // true if previous load attempt failed in the very beginning on extension or format check |
| 381 | return result.error() == stringUnsupportedFileExtension() |
| 382 | || result.error().starts_with( stringUnsupportedFileFormat() ); |
| 383 | }; |
| 384 | |
| 385 | bool loadedFromSceneFile = false; |
| 386 | |
| 387 | auto ext = std::string( "*" ) + utf8string( filename.extension().u8string() ); |
| 388 | for ( auto& c : ext ) |
| 389 | c = ( char )tolower( c ); |
| 390 | |
| 391 | if ( findFilter( SceneLoad::getFilters(), ext ) ) |
| 392 | { |
| 393 | const auto objTree = loadSceneFromAnySupportedFormat( filename, callback ); |
| 394 | if ( !objTree.has_value() ) |
| 395 | return unexpected( std::move( objTree.error() ) ); |
| 396 | |
| 397 | objTree->obj->setName( utf8string( filename.stem() ) ); |
| 398 | result = LoadedObjects{ .objs = { objTree->obj }, .warnings = std::move( objTree->warnings ), .lengthUnit = objTree->lengthUnit }; |
| 399 | loadedFromSceneFile = true; |
| 400 | } |
| 401 | else for ( const auto& filter : ObjectLoad::getFilters() ) |
| 402 | { |
| 403 | if ( filter.isSupportedExtension( ext ) ) |
| 404 | { |
| 405 | const auto loader = ObjectLoad::getObjectLoader( filter ); |
| 406 | result = loader( filename, callback ); |
| 407 | if ( result.has_value() || result.error() == stringOperationCanceled() ) |
| 408 | break; |
| 409 | } |
| 410 | } |
| 411 | // no else to support same extensions in object and mesh loaders |
| 412 | if ( tryOtherLoaders() ) |
| 413 | { |
| 414 | auto maybe = makeObjectFromMeshFile( filename, callback ); |
| 415 | if ( maybe ) |
| 416 | { |
| 417 | maybe->obj->select( true ); |
| 418 | result = LoadedObjects{ .objs = { maybe->obj }, .warnings = std::move( maybe->warnings ) }; |
| 419 | } |
| 420 | else if ( !maybe.error().starts_with( stringUnsupportedFileExtension() ) ) |
| 421 | result = unexpected( std::move( maybe.error() ) ); |
| 422 | } |
| 423 | |
| 424 | if ( tryOtherLoaders() ) |
| 425 | { |
| 426 | auto objectLines = makeObjectLinesFromFile( filename, callback ); |
| 427 | if ( objectLines.has_value() ) |
no test coverage detected