Hi,
My name is Daniel.
I have recently done exactly the same project with some dll, written on C++, but the customer wanted C# interface.
I will provide you clear C# interface to PDAL library.
I work in a close communication with the customer, so you'll be involved in a process, so even there might be a possibility to change the API a little if it fits you better.
Since I'm new on freelancer.com, I am ready to demonstrate my skills by providing to you some limited C# wrapper of the discussed library for free, on your demand.
Thanks,
Daniel