282 reputation
18
bio website reedbeta.com
location Milpitas, CA
age 28
visits member for 1 year, 9 months
seen Apr 14 at 2:49

I'm a graphics programmer, an amateur physicist, and a sci-fi nerd. I teach computers how to make pretty pictures. I'm excited by beautiful, immersive, story-driven games and interactive fiction. I enjoy messing around with esoteric ideas. I like explaining things.

I currently work for NVIDIA DevTech. Previously, I worked for Sucker Punch Productions on the Infamous series of games for PS3 and PS4.

reedbeta.com - developer blog, OpenGL demos, and other projects. @reedbeta on Twitter.


Feb
11
comment Intersection between a cylinder and an axis-aligned bounding box
I think you could construct $P$ more simply as $P = 1 - \vec v \vec v^T$. The matrix $\vec v \vec v^T$ (the outer product of $\vec v$ with itself) maps a vector to its projection on $\vec v$, assuming that $\vec v$ is unit length. Then $1 - \vec v \vec v^T$ projects onto the plane perpendicular to $\vec v$.
Jul
18
awarded  Yearling
Jun
30
comment Euler's formula for triangle mesh
@BRabbit27 Fixed.
Jun
30
revised Euler's formula for triangle mesh
typo in formula
Jun
21
answered Euler's formula for triangle mesh
Jun
21
awarded  Editor
Jun
21
awarded  Organizer
Jun
21
revised Euler's formula for triangle mesh
math formatting, tags
Jun
21
suggested suggested edit on Euler's formula for triangle mesh
Apr
4
comment Least square solution based on the pseudoinverse solved efficiently with singular value decomposition
You can start by reading the Wikipedia article on SVD. Calculating the Moore-Penrose pseudoinverse is the first thing listed in the applications section.
Mar
22
answered Interpolation of surface normals on the face of a triangle and Goroud shading
Jan
24
comment $E=A\cup B$ measurable $\Rightarrow$ $A,\ B$ are measurable.
What's the actual question?
Jan
24
awarded  Teacher
Jan
24
answered Existence of a matrix whose power is $I$.
Jan
24
comment Reflection around a plane, parallel to a line
That sounds like it would work to me.
Oct
27
accepted What's the difference between hyperreal and surreal numbers?
Oct
26
comment What's the difference between hyperreal and surreal numbers?
Interesting. Could you elaborate on the embedding? I'm just trying to get some intuition for this, not formal details. Are there "typical" or "natural" embeddings, and given such an embedding, where would the extra surreals be? For instance, is it somewhat analogous to how the rationals are embedded in the reals, where the rationals are dense but there are extra real numbers "between" the rationals?
Oct
26
asked What's the difference between hyperreal and surreal numbers?
Jul
18
awarded  Nice Question
Jul
18
awarded  Scholar