Bezier / NURBS curves

R
Posted By
ronviers
Oct 13, 2007
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806
Replies
4
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Closed
Hi,

Can someone please explain the difference between a Bezier curve and a B-spline curve?

Thanks,
Ron
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T
Tacit
Oct 13, 2007
In article ,
"" wrote:

Can someone please explain the difference between a Bezier curve and a B-spline curve?

Put most simply, a Bezier curve is a generalized type of B-spline.

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R
ronviers
Oct 13, 2007
tacit wrote:

Put most simply, a Bezier curve is a generalized type of B-spline.
—
Photography, kink, polyamory, shareware, and more: all at http://www.xeromag.com/franklin.html

Thanks tacit,
Is it the relative placement of the tangent handles to the interval boundaries? They are looking pretty similar to me.

Thanks,
Ron
T
Tacit
Oct 14, 2007
In article ,
"" wrote:

Is it the relative placement of the tangent handles to the interval boundaries? They are looking pretty similar to me.

If you really want to get technical: B-splines are the mathematical equations that describe certain classes of curves. Bezier curves, as most people think of them, are implementations in a computer of these mathematical equations for the purpose of creating computer graphics. (That’s not entirely 100% accurate; Bezier curves can be thought of as mathematical equations that are generalizations of B-splines…but it gets the point across.)

So, for the purpose of talking about software that works with vector graphics, they’re the same thing.

—
Photography, kink, polyamory, shareware, and more: all at http://www.xeromag.com/franklin.html
R
ronviers
Oct 15, 2007
On Oct 14, 1:41 pm, tacit wrote:
In article ,

"" wrote:
Is it the relative placement of the tangent handles to the interval boundaries? They are looking pretty similar to me.

If you really want to get technical: B-splines are the mathematical equations that describe certain classes of curves. Bezier curves, as most people think of them, are implementations in a computer of these mathematical equations for the purpose of creating computer graphics. (That’s not entirely 100% accurate; Bezier curves can be thought of as mathematical equations that are generalizations of B-splines…but it gets the point across.)

So, for the purpose of talking about software that works with vector graphics, they’re the same thing.

—
Photography, kink, polyamory, shareware, and more: all athttp://www.xeromag.com/franklin.html

Hi – thank you for the reply,
I don’t really want to get technical (not that it would be an option anyway:)) – I was just wondering. Maya calls them B-spline curves while PS and AI call them Bezier curves. My first thought, the obvious one, was that maybe B-splines curves had orthogonal tangent handles for manipulation in other axis but from the curves editor that appears not to be the case. I was thinking that since they are geometric objects that there should be visible differences in appearance or behavior but is sounds like from what you are saying that they are effectively equivalent. I’m not worried in any case as I can get them to do what I need them to.

Thanks,
Ron

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