if the ray is parallel to the plane then is there just no value of t that exists ?
Yes, I think that means that that the ray does not intersect that object.
in that case (N^T d) would be zero, and even if the origin of the ray was in the plane, the ray equation here would yield infinity
if the ray is parallel to the plane then is there just no value of t that exists ?
Yes, I think that means that that the ray does not intersect that object.
in that case (N^T d) would be zero, and even if the origin of the ray was in the plane, the ray equation here would yield infinity