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visits member for 4 years, 3 months
seen 18 hours ago

Mar
25
answered Conventional ordering of faces of regular polyhedron?
Mar
2
answered Finding a quadratic Bézier curve of length $l$ between two points
Mar
2
comment Find points along a Bézier curve that are equal distance from one another
@Kenpachi: The Babylonian method gives you a bunch of "t" values. The x,y coordinates on the curve at any t is given by plugging that t value into the Bezier function B(t). For example, if we want the x coordinate at t=0.1 of a typical cubic Bezier curve with control points P0, P1, P2, P3, we calculate B_x(0.1) = (1-0.1)^3*P0_x + 3*(1-0.1)^2*(0.1)*P1_x + 3*(1-0.1)*(0.1)^2*P2_x + (0.1)^3*P3_x.
Feb
28
answered Find points along a Bézier curve that are equal distance from one another
Feb
16
answered Changing a bezier curve by dragging a point on the curve itself rather than a control point
Feb
16
answered Detect “Kinks” in Parallel Lines to Bezier Curves [x-post]
Feb
13
comment How do I find a Bezier curve that goes through a series of points?
The design guys are not the problem. The problem is that nearly every 3D CAD package stores curves in its own proprietary binary 3D file format. They are happy to "export" their designs to some other format, but apparently their only choices are (a) some other proprietary binary file format, or (b) a STL made of thousands of tiny flat triangle facets.
Feb
13
asked How do I find a Bezier curve that goes through a series of points?
Feb
13
answered How do I reliably find this point of a sector, regardless of the arc angle?
Feb
12
answered Finding the mid-point of a B-spline curve.
Jan
21
answered fitting two parallel lines to two clusters of points
Jan
21
asked insphere/circumsphere ratio of a polyhedron the same as its dual polyhedron?
Jan
21
comment Conventional ordering of faces of regular polyhedron?
You may be interested in "What is the best way to pixelize a sphere?" by Max Tegmark -- see Wikipedia: quadrilateralized spherical cube and Wikipedia: geodesic grid.
Dec
8
answered Universal Hashing
Sep
3
awarded  Yearling
Aug
21
comment Can prefix code always achieve optimal data compression?
@MJD: I think what he's asking is: Does there exist a character code that gives better compression than any prefix code? A proof that, among all possible prefix codes, Huffman is optimal, doesn't resolve this question one way or the other.
Aug
18
awarded  Revival
Jul
19
awarded  Organizer
Jul
19
revised Is this valid parametric equation to create control points for a helix in 3D space?
I'm guessing setting x to two different things was a typo; perhaps you meant z ?
Jul
19
comment Is this valid parametric equation to create control points for a helix in 3D space?
@ChuckFernández: I think that was a simple typo; fixed now.