aha,
AB is the line segment
^ is unit vector (we use this in england above vector for unit vector)
C is the point
On Sun, Jul 27, 2008 at 11:05 PM, Marten Svanfeldt (dev) <
[EMAIL PROTECTED]> wrote:
> Hi,
>
> What is A, B, C and AB? I assume you use ^ to indicate unit vector (a
> bit strange imo ;)
>
> -M
>
> Amir Taaki wrote:
> > Hi!
> >
> > So right now to find the closest point on a line segment I project the
> > vectors. Then to see if the point is outside the segment I do,
> >
> > c = C - A
> > if (c^ = AB^)
> > {
> > if (|c| < |AB|) => lies inside segment
> > else
> > return B
> > }
> > else
> > return A
> >
> > Is there a way to do it without a sqrt? the one needed to calculate the
> > unit vectors?
> >
> >
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