The edge case here is N^Td equals 0. But even in this case, there are still two cases that the origin of the ray may be on the plane so the result is it self. Otherwise, there's no result.
The edge case here is N^Td equals 0. But even in this case, there are still two cases that the origin of the ray may be on the plane so the result is it self. Otherwise, there's no result.