[Algorithms] =?iso-8859-1?Q?RE:_=5BAlgorithms=5D_B-Spline_vs_B=E9zier?=

[Philippe B. <Philippe.Beaudoin@Matrox.COM>]

What do you mean by "almost all of these spline"? I can certainly see how=
 to
convert an order N B-Spline with knots {0,...,0,1,...,1} into an order N
B=E9zier but I can't see how to do it in the general case. (Maybe I've no=
t
reached this chapter in the book yet ;))

As for converting subdivision into B=E9zier, I guess you're talking about
"approximating" the subdivision limit surface. If not, I'd really want to
know how to do this.

	Philippe


> -----Original Message-----
> From: gda...@li...
> [mailto:gda...@li...]On Behalf Of Tom
> Forsyth
> Sent: 8-Aug-2001 09:21
> To: gda...@li...
> Subject: [Algorithms] RE: [Algorithms] B-Spline vs B=E9zier
>
>
> Remember that almsot all of these spline primitives can be converted
> (offline) into rational Bezier curves, so model in whatever primitive y=
ou
> like, then process into Bezier curves for actual rendering.
>
> Trimming is still a problem for Bezier curves as well of course.
> Subdivision
> surfaces solve a lot of these problems, but the tools aren't really the=
re
> yet. A lot of them can also be converted into Bezier curves for renderi=
ng
> :-)
>
> Tom Forsyth - Muckyfoot bloke.
>
> What's he up to now (and can I have a go)?
> http://www.eidosinteractive.com/downloads/search.html?gmid=3D86