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visits member for 3 years, 6 months
seen Mar 26 '13 at 5:47

Jan
21
awarded  Yearling
Jun
2
accepted Orientation matrix for three points in the plane
May
31
revised Orientation matrix for three points in the plane
typo
May
30
awarded  Student
May
30
asked Orientation matrix for three points in the plane
Feb
10
comment Smallest enclosing cylinder for an irregular body
Just ran across this an thought I'd leave it here for future reference: geometrictools.com/Documentation/CylinderFitting.pdf
Jan
23
comment Computing surface normal, floating point arithmetic
Thanks for the reply! I asked around at some other locations, and several people pointed me to this algorithm: cs.haifa.ac.il/~gordon/plane.pdf, You might be interested in having a look. There's an additional explanation here: cs.berkeley.edu/~ug/slide/pipeline/assignments/…
Jan
23
awarded  Scholar
Jan
23
accepted Computing surface normal, floating point arithmetic
Jan
22
comment Computing surface normal, floating point arithmetic
@ZevChonoles I wasn't sure if dls was correct in saying that it would be more appropriate for the Scientific Computing site, so I flagged it.
Jan
22
awarded  Citizen Patrol
Jan
22
comment Computing surface normal, floating point arithmetic
The vertices are exported from a modeling program, and stored as 32 bit floats. I understand that error is unavoidable, but I was wondering if there is a method to ensure that the error is as small as possible - it seems that some choices ought to be better than others?
Jan
21
asked Computing surface normal, floating point arithmetic
Nov
28
comment Smallest enclosing cylinder for an irregular body
Do you have an application in mind, and are you working in a particular language?
Nov
21
comment Check if point on circle is in between two other points (Java)
I'm somewhat confused about what exactly you want. Are you looking for a function that will take in 3 points which are known to be on the circle, and classify one of them by its position relative to the other two? Is this in $\mathbb{R^2}$ or $\mathbb{R^3}$? Are they in rectangular or polar coordinates?
Nov
21
revised Line and plane intersection in 3D
fixed spelling
Nov
21
awarded  Editor
Nov
21
revised Line and plane intersection in 3D
edited body
Nov
21
answered Line and plane intersection in 3D
Nov
18
awarded  Teacher