I have represented a box as a 4 col x 2 row matrix

something like `bbox = [0 0 ; 50 0; 50 100; 0 100]`

I have a few of these boxes and I want to rotate them by a certain angle.

I create a ` LinearMap(RotMatrix(deg2rad(angle)))`

… now how do I use this to transform the coordinates?

```
bbox = 4×2 Matrix{Int64}:
396 979
424 979
424 1009
396 1009
>>> warp(bbox', LinearMap(RotMatrix(deg2rad(180))))
2×4 OffsetArray(::Matrix{Float64}, -2:-1, -4:-1) with eltype Float64 with indices -2:-1×-4:-1:
1009.0 1009.0 979.0 979.0
396.0 424.0 424.0 396.0
```

So it changed the shape of the matrix too?

```
>>> LinearMap(RotMatrix(deg2rad(180))) * bbox'
No method matching .... found ....
```

So I also can’t treat it like a matrix and multiply it directly.

How do I do this?