> thanks for your response. The "more-then-2-points"-approach was not
> really meant to determine the slope, but to ensure that the drop is
> completely on the blades,

   I finally had to use four... just 3 was not working well for some
reason. At the end it didn't come out as nice as I was expecting, but
it's at least half-convincing at a first glance (see final post on this
thread).

> I was to entangled with a similar problem in placing a mirror
> orthogonal to the viewpoint of the camera, where I used a
> basis-transformation of two vectors with Shear_Trans() from the
> transform-library to accomplish the correct rotation. The result is a
> WIP, which is stalled for the moment, but may be you recognize the
> real author of this scene...

   Yes, that landscape sounds familiar... ;) BTW, I've not the slightest
idea of what you're doing there...

-- 
Jaime Vives Piqueres
		
La Persistencia de la Ignorancia
http://www.ignorancia.org

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