Curved Raycasting

[Maurice_Z]

*Closes 20 opened windows* Ekhm, right. This time I come with something which sounds really advanced.
Look here:




Now. first we see a classical Raycast. A pretty, simple, easy to compute straight line.
Then we have a part of a circle - really pretty, isn't it? A perfectly curved ray.
Then we have simplified curved ray - bent and broken yet still charming.

So the question is - is there a way to do curved, circular Raycast (either perfectly curved or simplified)? And where can I find some information about it? I know it can be done in a different way (if you know any better solution please tell about it) but I feel a big hunger for knowledge .

Thanks in advance!