RAYTRACING Flashcards
1
Q
What does a normalised vector mean
A
Length 1
2
Q
What is the explicit equation of the ray
A
R(t) = R0 + Rd*t for t ≥ 0
3
Q
What are some effects we can create with raytracing
A
Reflection
Transparency
refraction
specular highlights
shadows
depth of field
These effects happen naturally with raytracing
4
Q
What is raycasting
A
sending a ray straight line into a scene
5
Q
Most rays from a light source…
A
do not make it to a viewpoint
6
Q
The Whittted algorithm
A
Traces rays from the viewpoint instead of from the light source
when the ray from the viewpoint hits an object, we fire a “shadowfeeler” ray to every light source in the scene
