Re: [CAD_CAM_EDM_DRO] Re: Filter or converter for converting short lines to arcs

From "Mathematical Elements for Computer Graphics" (Rogers, Adams):

x^2 + y^2 + dx + ey + f = 0

Substitute your three points and solve three equations for the three
variables d, e, f. The center is at x = -d/2, y = e/2.

HTH,

Bill

----- Original Message -----
From: "Charles Hixon" <cehixon@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, June 27, 2003 12:50 PM
Subject: [CAD_CAM_EDM_DRO] Re: Filter or converter for converting short
lines to arcs


> What is the equation to determine the center of an arc given three
> points on the arc? charles
>