How do we use max_t

[pjsmith97]

Hey, still working on the assignment due to circumstances.

Exactly what is the purpose of max_t? It might have something to do with the problem I'm having, where part of the sphere isn't getting anything but ambient light.

Here is the diffuse image with just ambient light.

I do want to stress that I understand what max_t is, but I don't understand what we do with it.

[darren-moore]

Are you taking into account both light sources?

max_t, along with the direction vector can be used to determine the distance from the point to a light source. You'll find it useful in shadow computations. I don't think that's your issue here.

[pjsmith97]

I do iterate over all the lights (And have point and directional covered). I noticed that in the first instance of finding n dot l (this is the directional light) it's a negative value. I can't tell if it's on the sphere in this instance, but is it possible I'm having sign issues?

[pjsmith97]

Figured it out. I misunderstood d from directional light. Didn't realize it was the direction from the light, not the scene.