SharedPtr<Mesh> MeshMgr::CreatePlane(const std::wstring & id, const UINT width, const UINT height, const float spacing)
{
    Array<Vertex> verts(width * height);
    Array<UINT> indices;

    const float fWidth = static_cast<float>(width);
    const float fHeight = static_cast<float>(height);
    const float halfWidth = fWidth / 2.f;
    const float halfHeight = fHeight / 2.f;

    for (UINT y = 0; y < height; ++y)
    {
        for (UINT x = 0; x < width; ++x)
        {
            verts[y * width + x] = Vertex((x - halfWidth) * spacing, 0.f, (y - halfHeight) * spacing, 0.f, 1.f, 0.f, x / fWidth, y / fHeight);
        }
    }

    for (UINT y = 1; y < height; ++y)
    {
        for (UINT x = 1; x < width; ++x)
        {
            indices.push_back((y - 1) * width + (x - 1));
            indices.push_back((y - 0) * width + (x - 0));
            indices.push_back((y - 1) * width + (x - 0));

            indices.push_back((y - 1) * width + (x - 1));
            indices.push_back((y - 0) * width + (x - 1));
            indices.push_back((y - 0) * width + (x - 0));
        }
    }

    return CreateMesh(id, verts, indices);
}