Re: Calculating a Cubic Curve
- From: "Dave Eberly" <dNOSPAMeberly@xxxxxxxxxxxxxxx>
- Date: Thu, 27 Oct 2005 17:08:41 GMT
<hoffmann@xxxxxxxxxxxx> wrote in message
news:1130431675.542843.278160@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> why are you approximating the VELOCITY by a cubic curve ?
> For all practical applications it would be sufficient to
> approximate the COORDINATE by a cubic curve (IMHO).
>
> Which real task ends in a boundary value problem for the
> velocities without taking into account the coordinates ?
>
> I don't know any, but this can be corrected.
Adobe After Effects has a keyframe system to allow you to
adjust the speed along a path. Essentially, this is equivalent
to a change in the curve parameter for an already specified
"coordinate" curve.
--
Dave Eberly
http://www.geometrictools.com
.
- References:
- Calculating a Cubic Curve
- From: Thomas Freedy
- Re: Calculating a Cubic Curve
- From: hoffmann
- Calculating a Cubic Curve
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