Google Maps JavaScript API v3 directions capabilities

Question

I use Google Maps js API v3. I can show directions with waypoints based on this. What I want is getting the points of the direction. Lets say the direction line goes from Budapest to Warsaw. I want to get all latitude and longitude on that line. But I don't find any build in function or workaround for this. I don't copy code here as the tutorial works for me, I can start from that. (Of course it isn't a good idea to make lot of waypoints.)

I've seen this question. It isn't solution for my problem, as its not for API3

Thanks in advance.

UPDATE: Based on Matty F's answer I found out I searched for the result object's routs array's overview_path field. Thank you.