----Original Message---- From: Deane Yang [mailto:deane_yang@yahoo.com] Sent: 02 June 2005 16:57 To: boost@lists.boost.org Subject: [boost] Re: Probing interest in fixed dimension matrix class

Andy Little wrote:

...

eg to find the point 1/3 rd way from the start of line(A , B) one could calculate 2/3 *A +1/3 * B.

I think it is more natural to compute this as

A + (1/3)*(B - A),

where A and B are points and B - A is a vector. So you're really still just adding a vector to a point to get a new point. There is never a need to add or rescale points.

Hmm. To me that looks a very UNnatural recasting of the original in order to satisfy the rule. -- Martin Bonner Martin.Bonner@Pitechnology.com Pi Technology, Milton Hall, Ely Road, Milton, Cambridge, CB4 6WZ, ENGLAND Tel: +44 (0)1223 441434