Related to my previous question’s scenario https://forums.unrealengine.com/showthread.php?9962-Expose-FBoneReference-to-Blueprint

I have two transform in world space A (Red), B (Blue) and I’d like to compute a relative transform (r) as if B would be the children of A.

```
// Pseudo code
FTransform r = B - A;
```

Then later, I’d like find where would B be according to a third transform C (world space)

```
// Pseudo code
FTransform D = r + C;
```

Can anyone tell me if is there any builtin math with Matrix/Transform in UE4 or do I need to find my own solution?