How to use ITKIOOMEZarrNGFF in C++?

[N-Dekker]

Can you please elaborate a little bit more on how to use ITKIOOMEZarrNGFF in C++? I see, https://github.com/InsightSoftwareConsortium/ITKIOOMEZarrNGFF/blob/fe5bc3caecfe774e64acabfd75e9d74e22eacfb5/README.md says:

Usage from C++ should not require any special action. In special situations, you might need to invoke:

itk::OMEZarrNGFFImageIOFactory::RegisterOneFactory();

Looks fine, but then, what steps are there to take to get it compiled? Is the idea for the client application to use something like ExternalProject_Add(ITKIOOMEZarrNGFF ...) in their CMakeLists.txt?

Is the intention to (eventually?) allow ITKIOOMEZarrNGFF to be selected as an optional module when CMake-configuring ITK?

[dzenanz]

Is the intention to (eventually?) allow ITKIOOMEZarrNGFF to be selected as an optional module when CMake-configuring ITK?

Yes. But meanwhile, read on.

Depending on the build system, ExternalProject_Add is a possibility. Probably the easiest is to build ITK, then build ITKIOOMEZarrNGFF pointing to the ITK build directory, and then use that ITK build directory from then on.