Maths function inheritance from one project to an other

Hi.

Perhaps you can go the way over interface(s)?

Interfaces have the disadvantage that they cause boxing when accessing structures through them. For a while I thought there was no good solution to this issue, but someone posted an ingenious hack on gamedev.net recently:

[StructLayout(LayoutKind.Explicit)]
struct Vector2
{
    [FieldOffset(0)] public float X;
    [FieldOffset(4)] public float Y;
    [FieldOffset(0)] private OpenTK.Vector2 OpenTK_Vector2;
 
    public static implicit operator Vector2(OpenTK.Vector2 v)
    {
        OpenTK_Vector2 = v;
    }
 
    public static implicit operator OpenTK.Vector2(Vector2 v)
    {
        return v.OpenTK_Vector2;
    }
}

You can also define implicit operators to cast your Vector2 from/to any other library you care to support (XNA, from/to OpenTK.Vector2 (and XNA, SlimDX etc).

The downside is that you'll have to reimplement any operations you wish to support (I'd suggest using extension methods for this) but at least this gives you a simple way to interoperate with different math libraries.

Please read the full license text. You are required to add notion of OpenTK's usage/parts of it, accompanied by the same licensing text. If in doubt ask some lawyers about the MIT/X11 licensing.

You can do pretty much anything with it except:
1) If you're redistributing part of OpenTK source do not remove the original license from the files.
2) If you're also offering binary only packages for download, an explicit "OpenTK License.txt" would be necessary. That's what I did a couple of months ago. No lawsuits yet :)