POV-Ray : Newsgroups : povray.general : Request for Comments: Quadratic Bezier Splines : Re: Request for Comments: Quadratic Bezier Splines Server Time
16 Jun 2021 16:26:16 EDT (-0400)
  Re: Request for Comments: Quadratic Bezier Splines  
From: Mike Horvath
Date: 9 Jun 2021 18:56:56
Message: <60c14738$1@news.povray.org>
On 6/7/2021 1:23 PM, clipka wrote:
> Am 07.06.2021 um 16:54 schrieb Mike Horvath:
>> On 6/6/2021 5:52 PM, clipka wrote:
>>> - Quadratic splines are also occasionally referred to as "conic 
>>> splines" or "conic arcs", for reasons I'm not entirely sure of.
>>
>>
>> IIRC, quadratic splines are parabolic segments or arcs, which are also 
>> conic sections.
> 
> I'm aware of this connection in general, but I'm not really sure whether 
> the spline curve segments are necessarily parabolic, or whether that 
> only applies to the individual components in a value/result plot; and 
> what's more, there's the snag that they can't represent any other conic 
> sections. They can't even represent sections of ellipses.

See here:

https://www.geogebra.org/m/h779nwhd


Mike


Post a reply to this message

Copyright 2003-2021 Persistence of Vision Raytracer Pty. Ltd.