Scheme - Re: ellipse intersection

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Re: ellipse intersection

Marcin 'Qrczak' Kowalczyk

2004-12-03, 9:01 pm

iain-3@truecircuits.com (Iain McClatchie) writes:

> Ray> Would this approach work: shrink/stretch/rotate the coord-space until
> Ray> one of the ellipses is a circle and the other is aligned to the x/y axes.
> Ray> Then solve the circle/ellipse intersection problem. Then transform back
> Ray> into the original space.
>
> Ellipses can be stretched along their axes or rotated and they are still
> ellipses. But you can't stretch them at an angle to the axes, and still
> maintain an ellipse.

No, it will remain an ellipse.

--
__("< Marcin Kowalczyk
\__/ qrczak@knm.org.pl
^^ http://qrnik.knm.org.pl/~qrczak/

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