Things I have learned about vector spaces
Posted on November 20, 2010
Tagged affine, diagrams, inverse, normals, points, translation, transpose, vectors
Tagged affine, diagrams, inverse, normals, points, translation, transpose, vectors
Work on the diagrams library is coming along rather nicely. I’ll have more to say about it soon, but for now here are two things I have learned recently:
- Normals transform as the inverse transpose (see Subject 5.27).
- Be very careful about distinguishing between points and vectors. Otherwise you are likely to get bitten by translations doing the Wrong Thing.