Function to3mf

source/MRMesh/MRMeshSave3mf.cpp:211–270

}

Expected<void> to3mf( const Mesh & mesh, const std::filesystem::path& file, const SaveSettings & settings )
{
    MR_TIMER;
    if ( file.empty() )
        return unexpected( "Cannot save to empty path" );

    UniqueTemporaryFolder scenePath;
    if ( !scenePath )
        return unexpected( "Cannot create temporary folder" );

    {
        std::ofstream f( scenePath / "[Content_Types].xml" );
        f <<
R"(<?xml version="1.0" encoding="utf-8"?>
<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">
  <Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml" />
  <Default Extension="model" ContentType="application/vnd.ms-package.3dmanufacturing-3dmodel+xml" />
  <Default Extension="texture" ContentType="application/vnd.ms-package.3dmanufacturing-3dmodeltexture" />
  <Default Extension="xml" ContentType="application/vnd.ms-printing.printticket+xml" />
  <Default Extension="prop" ContentType="application/vnd.openxmlformats-package.core-properties+xml" />
  <Default Extension="gif" ContentType="image/gif" />
  <Default Extension="jpg" ContentType="image/jpeg" />
  <Default Extension="png" ContentType="image/png" />
</Types>
)";
        if ( !f )
            return unexpected( "Cannot write file inside temporary folder" );
    }

    {
        const auto dirRels = scenePath / "_rels";
        std::error_code ec;
        if ( !create_directory( dirRels, ec ) )
            return unexpected( "Cannot create subdirectory inside temporary folder" );

        std::ofstream f( dirRels / ".rels" );
        f <<
R"(<?xml version="1.0" encoding="utf-8"?>
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
  <Relationship Type="http://schemas.microsoft.com/3dmanufacturing/2013/01/3dmodel" Target="/3D/3dmodel.model" Id="rel0" />
</Relationships>
)";
        if ( !f )
            return unexpected( "Cannot write file inside temporary folder" );
    }

    {
        const auto dir3D = scenePath / "3D";
        std::error_code ec;
        if ( !create_directory( dir3D, ec ) )
            return unexpected( "Cannot create subdirectory inside temporary folder" );

        auto settings1 = settings;
        settings1.progress = subprogress( settings.progress, 0.0f, 0.9f );
        if ( auto maybeDone = toModel3mf( mesh, dir3D / "3dmodel.model", settings1 ); !maybeDone )
            return unexpected( std::move( maybeDone.error() ) );
    }