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From: jim@rootham.com (jim rootham)
Subject: Re: Elliptical curves
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Date: Fri, 20 Sep 1996 22:30:09 GMT
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In article <32423850.136F@apb.es>, Dani Macho Ortiz <dani@apb.es> says:
>
>Hello group! 
>
>        A Question: do you know how to implement elliptic curves with
>        only three points of control?
>
>        Points of control:
>        Left most point of arc, center?, and right most point of arc.
>

This is not enough control points to specify an arbitrary elipse.  It will
specify a circle.  If you want an elipse you will need to specify both foci. 
>
>
>        Another question to the forum. Do you know a way
>        to subdivide it into arbitrary points of the curve?
>
This shouldn't be too hard to extrapolate from the circle case once you
have the elipse algorithm.

