Using in instead of ref?

[Happypig375]

There are many const T* parameters in Box2D. The easy way is to treat all of them as ref, i.e. not caring about the const part. However, this not only causes unnecessary friction when using the methods, such as the need to declare parameters on a separate line (you can just supply a value to an in parameter), but also loses the readonly intention of the pointer. It may be more correct to expose these pointers as in instead of ref.

Documentation on in vs ref: https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/method-parameters#reference-parameters

[Happypig375]

Since you translate constant struct pointers that have an associated count to ReadOnlySpan instead of Span, constant struct pointers that only point to one item should be translated as in instead of ref too.

[ikpil]

Sorry for the late reply.
I completely agree with what you mentioned.
I’ll make the changes that can be adjusted accordingly.