POV-Ray : Newsgroups : povray.advanced-users : Beziers/Quadratics and Cubics splines : Beziers/Quadratics and Cubics splines Server Time
5 Jul 2024 16:03:51 EDT (-0400)
  Beziers/Quadratics and Cubics splines  
From: Woody
Date: 3 Jan 2008 18:20:01
Message: <web.477d6cfea5dc427c94e61a50@news.povray.org>
Can someone please explain why Quadratics and Cubic splines are even necessary?
As far as I can figure from wikipedia and wolfram's mathworld they are both
just linear combinations of Bezier splines (someone please correct me if I am
wrong).

The math behing bezier splines seems a whole lot more simple as I learned it in
Hight school geometry as opposed to high school Algebra 2. Also if you look at
Photoshop or Illustrator when it somes to defining curve segements every thing
seems to be Bezier (again I may be wrong).

Can anyone explain the math behind cubics and quadratics?

Also i'm a little irked that spherical sweeps do not include a bezier spline
option, nore does the spline keyword. I can make a macro easily enough to
create a bezier sweep (see
http://www.anim8or.com/manual/3_object_editor.html#extrusion). But it would be
nice if the prism object had that type of functionality included.

Sorry for my rant. What can I say except that 3d studio max and any upgrades are
too expensive (or I'm too cheap), and it takes too long too learn (or I don't
have enought time to learn).

Anyone and everyones thoughts are welcome.


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