grid_metadata()

std::string MayaFlux::IO::Detail::VDBArchive::grid_metadata	(	size_t	index,
		std::string_view	key
	)		const

Look up a string-typed metadata entry on a grid.

Parameters

index	Grid index, less than read_grid_count().
key	Metadata key, such as "class" or "vector_type".

Returns

The value, or empty if absent, not a string, or index is out of range.

Definition at line 713 of file VDBArchive.cpp.

{
    if (!m_state->read_file_open || index >= m_state->read_file.num_grids) {
        return {};
    }
 
    const tvdb_grid_t& grid = m_state->read_file.grids[index];
 
    for (size_t i = 0; i < grid.metadata.count; ++i) {
        const tvdb_meta_entry_t& entry = grid.metadata.entries[i];
        if (!entry.name || key != entry.name) {
            continue;
        }
        if (entry.value.type != TVDB_VALUE_STRING || !entry.value.u.s.str) {
            return {};
        }
        return { entry.value.u.s.str, entry.value.u.s.len };
    }
    return {};
}

References index, and m_state.