[vtkusers] vtkMath::Perpendiculars...

[David Gobbi]

Hi Rakesh,

It is used in cases where you have one vector, and need to find an
arbitrary vector that is perpendicular to it.

The idea behind this is that when you have one vector, there are an
infinite number of vectors that are perpendicular that vector, so you
need to supply an additional constraint (the angle "theta") to specify
which perpendicular vector you want.

This is in contrast to the case where you have two vectors and need to
find a third that is perpendicular to the first two, in which case you
can just use a cross product.

   David


On Mon, Mar 8, 2010 at 6:45 AM, Rakesh Patil <rakeshthp at in.com> wrote:
> Hello,
>
> In vtkMath, there is a function called, Perpendiculars()
>
> How does it works and in which context it can be used..??
>
> Thanks
>
> Regards
> Rakesh Patil
>
>
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