Ellipse Bounding A RectangleDate: 7/15/96 at 16:37:3 From: Anonymous Subject: Ellipse Bounding A Rectangle Dr. Math, I have the four points for a rectangle (rect1): top, left, right and bottom. I need to be able to calculate the rectangle bounding an ellipse bounding my original rectangle (rect1). In other words, how do I calculate an ellipse or an oval bounding or encompassing my original rectangle (rect1) using my four points? Then once I have that ellipse, how do I calculate its bounding rectangle and ultimately end up with a new set of top, left, right and bottom coordinates? I am assuming there will be at least two formulas. Thanks a million squared. Matthew Carl The Carl Group, Inc. Date: 7/15/96 at 17:26:1 From: Doctor Anthony Subject: Re: Ellipse Bounding A Rectangle If you have a rectangle, then there is no unique ellipse that can be drawn to encompass it. You could for example have a circle through the four points, and any number of ellipses with major and minor axes in either direction. That being so, there would be no unique second rectangle to be found which contained the ellipse. -Doctor Anthony, The Math Forum Check out our web site! http://mathforum.org/dr.math/ |
Search the Dr. Math Library: |
[Privacy Policy] [Terms of Use]
Ask Dr. Math^{TM}
© 1994- The Math Forum at NCTM. All rights reserved.
http://mathforum.org/dr.math/