Not sure if the lecture covered this slide... What does the problem: length of vectors ask? Does it mean we need to normalize the vertex normals for calculation?
kbiesiadecki141
Similar to the question above, I don't understand how we interpolate vertex normals. What value are we interpolating (e.g. with colors, you can weight each color with a/b/g). Part of my confusion also lies in the image; what is the circle and why are there tangents drawn to it?
j316chuck
Got it, so we linearly interpolate the 2 vectors at the vertexes to get a vector at a pixel?
ziyicui2022
Why we need to normalized ? What will happen if we don't normalize the normal vector
Not sure if the lecture covered this slide... What does the problem: length of vectors ask? Does it mean we need to normalize the vertex normals for calculation?
Similar to the question above, I don't understand how we interpolate vertex normals. What value are we interpolating (e.g. with colors, you can weight each color with a/b/g). Part of my confusion also lies in the image; what is the circle and why are there tangents drawn to it?
Got it, so we linearly interpolate the 2 vectors at the vertexes to get a vector at a pixel?
Why we need to normalized ? What will happen if we don't normalize the normal vector