Warp wrote:
> 
> John VanSickle <van### [at] erolscom> wrote:
> : Find the line along which the planes intersect.
> 
>   What is the equation for the intersection line of two planes?

Not an equation, but a specification.  This requires a point
(any point that lies along the desired line will do), and a vector.

I would get the vector by taking the cross-product of the normal
vectors of the two original planes.

To find the point, I would find the plane to which this vector
is normal and which contains the origin.  The place where all
three planes intersect is as good a point to use as any (it
happens to be the point on the line that is closest to the
origin).

Regards,
John
-- 
ICQ: 46085459

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