POV-Ray: Newsgroups: povray.advanced-users: How to convert normal-vector into rotation-vector: Re: How to convert normal-vector into rotation-vector

POV-Ray : Newsgroups : povray.advanced-users : How to convert normal-vector into rotation-vector : Re: How to convert normal-vector into rotation-vector		Server Time 28 Jul 2024 18:24:09 EDT (-0400)

From: Christoph Hormann
Date: 27 Jun 2004 07:45:02
Message: <cbmbr1$3tt$1@chho.imagico.de>

Joerg Schrammel wrote:
> Hi,
> 
> I'm using trace() to calculate positions of objects in a landscape 
> (heightfield ).
> Now i'd like to use the normal of the object (returned into the fourth 
> parameter of the trace function) to rotate the object before placing it 
> onto the landscape.
> 
> How can i convert a normal-vector into a rotation-vector?
> Sounds easy but i havn't any clue how to do it.
> Maybe someone can help ?

Have a look at Reorient_Trans() in transforms.inc.

Christoph

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