199 reputation
11
bio website linkedin.com/pub/josh-o-neal/…
location Illinois
age 26
visits member for 4 years
seen Aug 20 '12 at 21:28

I'm a mobile software engineer at Lextech Global Services!

http://www.lextech.com


Jul
2
awarded  Curious
Jan
20
awarded  Popular Question
Aug
25
awarded  Popular Question
Jan
29
comment Integration - Partial Fraction Decomposition
I'm still a bit confused about getting to the knowledge that A & B need to be linear functions, and, how you got to 1-x & x.
Jan
29
revised Integration - Partial Fraction Decomposition
added 24 characters in body
Jan
29
asked Integration - Partial Fraction Decomposition
Oct
27
comment Computing Points in 3D Space
Hm, I see. Well, I just ended up stripping down the function and rewriting it, perhaps I had a bit of otherwise bad logic. Regardless, thank you so much for your time spent helping me with this. You've guided me perfectly! :)
Oct
26
accepted Computing Points in 3D Space
Oct
26
comment Computing Points in 3D Space
What eventually worked for me, as I've updated my question, was by setting the following: $x'=x\cos\theta+z\sin\theta$ and $z'=z\cos\theta-x\sin\theta$. I think you were on the right track, but maybe mismultiplied a matrix?
Oct
26
revised Computing Points in 3D Space
added 2993 characters in body
Oct
26
comment Computing Points in 3D Space
@AMPerrine: I updated my loop, to use radians.
Oct
26
revised Computing Points in 3D Space
added 741 characters in body
Oct
26
comment Computing Points in 3D Space
@AMPerrine: I did, after it was pointed out on my x-post (stackoverflow.com/q/7904281/420001), but my numbers went way off, into the -x.Xex range.
Oct
26
comment Computing Points in 3D Space
@J.M.: I know that, however, it is not doing that.
Oct
26
revised Computing Points in 3D Space
added 2006 characters in body
Oct
26
revised Computing Points in 3D Space
added 2006 characters in body
Oct
26
comment Computing Points in 3D Space
Well, I tried what you suggested, but I don't think it worked. Please see my edit.
Oct
26
comment Computing Points in 3D Space
Ah, so you're saying it will only yield a Z of zero on the first iteration. Which makes sense, because the first point would be on the z=0. And yes, I definitely plan on calculating the points off of the initial point with an incremented $\theta$ to preserve accuracy. I'll give this a go in a bit, and report back. Thanks!
Oct
26
comment Computing Points in 3D Space
I'm confused as to why the Z coordinate is irrelevant. If my point starts at (1, 1, 0), and I rotate it, say, 45 degrees around the Y axis, my new point should most definitely have a change in Z, right?
Oct
26
comment Computing Points in 3D Space
This is in 3D space, so Z is not always zero. So this will go directly from (x, y, z) to a rotated (x, y, z)? No intermediaries? I ask because elsewhere it was suggested that I convert to cylindrical coordinates to do the rotation, then back to euclidean coordinates to render, and I just wanted to make sure your answer here does indeed maintain the point in the manner of (x, y, z).