Macro physx::DeriveClassForNewType

macro_rules! DeriveClassForNewType {
    ($PxWrap:ident : $($PxClass:ident),+) => { ... };
}

Macro for quickly defining Class<...> impls for new type wrappers. The type must be repr(transparent), and have the Px object in a field named obj. Will not work if the type parameters have trait bounds.