如何从结构中的固定大小数组访问元素？

Question

我正在尝试执行此操作，但是似乎没有任何内容分配给BoneIDs或BoneWeights，在C＃中执行此操作的正确方法是什么？

public unsafe struct VertexBoneData
{
    public Vector3 Position;
    public Vector3 Normal;
    public Vector2 TexCoord;
    public fixed float BoneIDs[Bone.MaxBoneCount];
    public fixed float BoneWeights[Bone.MaxBoneCount];

    public float GetBoneID(int i)
    {
        return BoneIDs[i];
    }

    public void SetBoneID(int i, float value)
    {
        BoneIDs[i] = value;
    }

    public float GetBoneWeight(int i)
    {
        return BoneWeights[i];
    }

    public void SetBoneWeight(int i, float value)
    {
         BoneWeights[i] = value;
    }
}

Answer 1

使用法警技术

        const int MaxBoneCount = 10;
        public struct VertexBoneData
        {
            public Vector3 Position;
            public Vector3 Normal;
            public Vector2 TexCoord;
            [MarshalAs(UnmanagedType.I4, SizeConst = MaxBoneCount)]
            public float BoneIDs[];
            [MarshalAs(UnmanagedType.I4, SizeConst = MaxBoneCount)]
            public float BoneWeights[];
        }