The callbacks and options of a custom vector source.
Zoom levels are whole numbers from 0 to 32.
See mln_custom_vector_source_options in the C API reference.
mln_custom_vector_source_options
Optional
The callbacks and options of a custom vector source.
Zoom levels are whole numbers from 0 to 32.
See
mln_custom_vector_source_optionsin the C API reference.