Method construct

source/MRMesh/MRSceneLoad.cpp:89–143

construct a scene object

    // construct a scene object
    SceneLoad::Result construct() const
    {
        auto scene = std::make_shared<SceneRootObject>();

        bool constructed;
        if ( loadedObjects_.size() == 1 )
        {
            const auto& object = loadedObjects_.front();
            auto typeName = std::string( object->typeName() );
            if ( typeName == SceneRootObject::StaticTypeName() || ( typeName == Object::StaticTypeName() && object->xf() == AffineXf3f() ) )
            {
                scene = createRootFormObject( object );
                constructed = false;
            }
            else
            {
                constructed = true;
                scene->addChild( object );
            }
        }
        else
        {
            constructed = true;
            for ( const auto& object : loadedObjects_ )
                scene->addChild( object );
        }

        SceneLoad::Result ret{
            .scene = std::move( scene ),
            .isSceneConstructed = constructed,
            .loadedFiles = loadedFiles_,
            .errorSummary = errorSummary_.str(),
            .warningSummary = warningSummary_.str(),
        };

        if ( ret.loadedFiles.empty() )
            ret.scene = nullptr; // Don't emit the root object on failure.
        else
        {
            // If something is loaded, consider errors as warnings
            if ( !ret.errorSummary.empty() )
            {
                if ( ret.warningSummary.empty() )
                    ret.warningSummary = std::move( ret.errorSummary );
                else
                {
                    ret.warningSummary += "\n\n";
                    ret.warningSummary += ret.errorSummary;
                }
                ret.errorSummary.clear();
            }
        }

        return ret;
    }

private:
    const std::optional<LengthUnit> targetUnit_;