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From: Deane Yang (deane_yang_at_[hidden])
Date: 2005-06-02 10:57:07


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.


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