Need to oblique incident fdtd code

hello
I am desperately looking for a 2D FDTD code with an oblique plane incident wave! I have read many books but have difficulty implementing them so need a code to help! PLz!

You could look at:

https://www.edaboard.com/thread157432.html

for some comments. I do not have code I can share but I have implemented various versions before. If you can provide more details e.g
- what have you tried so far
- what problems you encountered
I might be able to help. Some information on the model may also be helpful.

Can you rotate your model?