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Home » Messageboard » Make Everything Posh » Message 9543582

[challenge entry] 'Would one like some assistance to one's vehicle?'


Edit:- Sorry for filename fail. Thanks for pointing it out.

From the Make Everything Posh challenge. See all 242 entries (closed)

(Stashie is plotting against his blender on, Thu 25 Jun 2009, 13:16, archived)
# hahaha
(I helped save b3ta! Griffin Saver Something, something, 2006, something., Thu 25 Jun 2009, 13:17, archived)
# About time they did something useful for society
(I helped save b3ta! Maximinimus you stick around I'll make it worth your while, Thu 25 Jun 2009, 13:18, archived)
# Aside from being kept away from it?
(Mrs Trellis GIN, Thu 25 Jun 2009, 13:19, archived)
# Good point Mrs. T
(Stashie is plotting against his blender on, Thu 25 Jun 2009, 13:19, archived)
# Aythangyew
(Mrs Trellis GIN, Thu 25 Jun 2009, 13:20, archived)
# Help me /board, you're my only hope.
Now I'm not much cop at the pictures, but this post isn't about that. I have a signed copy of Watchmen (signed by Alan Moore). I've never seen one for sale. Seen plenty signed by Gibbons, but not by Moore. My question to you is this: How much should I sell it for?
(I helped save b3ta! WHARRGARBL, Thu 25 Jun 2009, 13:20, archived)
# I'll give you £1.25 for it
plus 50p P&P

or try here: tinyurl.com/mplpav (no horses)
(I helped save b3ta! Griffin Saver Something, something, 2006, something., Thu 25 Jun 2009, 13:21, archived)
# Dunno.
My question to you is, if I have a series of points and I want to draw a curving line through them, how can I find the necessary control points join them up smoothly with b-splines?
(_Felix 's school of dance and occult sciences, Thu 25 Jun 2009, 13:22, archived)
# With a sat nav and 6 sacrifices.
(I helped save b3ta! WHARRGARBL, Thu 25 Jun 2009, 13:23, archived)
# this is much more interesting
i don't know
(k3b/-\b Peace man., Thu 25 Jun 2009, 13:24, archived)
# Dammit, I thought you would.
What does De Boor's algorithm do? I'm reading about it, but it's all in maths, and I can't quite tell what it's for. Maybe it does the thing I just said.
(_Felix 's school of dance and occult sciences, Thu 25 Jun 2009, 13:26, archived)
# well if we're reading the same wikipedia article it does stuff...and it does it well apparently.
I know stuff all about this sort of curve fitting.

edit: do you just want to fit a degree n polynomial to a set of n points?
(k3b/-\b Peace man., Thu 25 Jun 2009, 13:31, archived)
# If I understand the question, no.
I want a smooth string of beziers with one control point each (are those "degree 1 polynominals"?), which put together go through all the points in my list.
(_Felix 's school of dance and occult sciences, Thu 25 Jun 2009, 13:46, archived)
# If it's a single control point, and you're not actually going through those,
The control points for the curves on either side of each point should form a straight line. The angle of that line is probably half way between the adjacent point lines.

Maybe.
(I helped save b3ta! Bloop Fri 16 Jul, 22:10, Thu 25 Jun 2009, 13:58, archived)
# So, they lie somewhere on some line with that angle. :)
Progress!
(_Felix 's school of dance and occult sciences, Thu 25 Jun 2009, 14:04, archived)
# no that doesn't work for zigzags
i give up
(I helped save b3ta! Bloop Fri 16 Jul, 22:10, Thu 25 Jun 2009, 14:04, archived)
# Hmm, how would a zigzag go

The middle spline would have to be straight, and the other two severely hook-shaped in order to join on to it smoothly. So their control points would have to be way off to the side relative to their start and end points.
(_Felix 's school of dance and occult sciences, Thu 25 Jun 2009, 14:21, archived)
# My advice would be to find a computational geometry page, not a mathematics one
solving problems like this in code is very different from solving it on paper, in maths...
(I helped save b3ta! The Alchemist king of the needlessly complicated, Thu 25 Jun 2009, 13:36, archived)
# The problem is that when computer scientists get advanced
they start using maths, the traitorous bastards. The ones who are still capable of explaining stuff in English don't know the answers.
There's this page: www.css.tayloru.edu/~btoll/s99/424/res/mtu/Notes/Lab/curve/tracing.html
I think that means De Boor is just for drawing a curve with a lot of control points. Didn't occur to me that was much of a problem, but apparently so.

I have a question going on here: en.wikipedia.org/wiki/Wikipedia:Reference_desk/Mathematics#Bezier_curve_with_width
(_Felix 's school of dance and occult sciences, Thu 25 Jun 2009, 13:42, archived)
# they fucking well do as well, and that.
I've been struggling for months with mathematical 'pseudocode' algorithms that have just a bit too much "assume an infinite set of things" to be feasibly implemented as code :(((

are these algorithms mean to take a curve, and produce the control points, or take some points, and produce the control points of the curve that fits them?
(I helped save b3ta! The Alchemist king of the needlessly complicated, Thu 25 Jun 2009, 13:50, archived)
# I need the second of those things.
The algorithms, I think, judging by the pictures, are just for quickly drawing a point on a curve defined with lots of control points (what k3b/-\b would call an "degree lots polynominal" I think). Therefore useless to me. Really I just want to know how to find the edge-path for a curve with a width, so I can fill inside and thereby draw a nice fat curved line with an even width, for the flash renderer I'm writing.
(_Felix 's school of dance and occult sciences, Thu 25 Jun 2009, 13:57, archived)
# why don't you actually take it and have it valued by several comic book people
then double it and try and flog it.

otherwise i'll give you $10au for it.
(k3b/-\b Peace man., Thu 25 Jun 2009, 13:23, archived)
# One on ebay for £30
tinyurl.com/lvjsnc
(I helped save b3ta! Rocker_44 (-_-) shhhhh! Is asleep on, Thu 25 Jun 2009, 13:24, archived)
# Thanks
(I helped save b3ta! WHARRGARBL, Thu 25 Jun 2009, 13:27, archived)
# can you post this again an hour after this one?
edit: can you rename this to your new image so we get to see it twice?
(I helped save b3ta! Mighty Nibus who dares gins | @nibus, Thu 25 Jun 2009, 14:24, archived)
# It's not a pea up there
This was a different image, filename fail on the new image I fear.
(I helped save b3ta! Maximinimus you stick around I'll make it worth your while, Thu 25 Jun 2009, 14:25, archived)
# something's fucked up here
there used to be a pic of william and his bastard ginger brother
(I helped save b3ta! inexpressible started a joke on, Thu 25 Jun 2009, 14:26, archived)