First off, I really like your web pages. Secondly, I'm just trying to do
something like you have shown here. Hopefully I can use your helpful
script to my benefit; that will of course depend on my ability to
understand it.


Nils Steinkamp wrote:
> 
> Hi there !
> 
> I fixed the problem by using
> 
>     #declare NX = vnormalize( Punkt_naechster - Punkt_vorher );     // last
> and next point
>     #declare NZ = vnormalize(vcross(NX,y));
>     #declare NY = vcross(NZ,NX);
> 
>     object { Test2               // has to declared before
>        matrix < NX.x            , NX.y            , NX.z,
>                 NY.x            , NY.y            , NY.z,
>                 NZ.x            , NZ.y            , NZ.z,
>                 Punkt_aktuell.x , Punkt_aktuell.y , Punkt_aktuell.z >  //
> the actuell translation
>     }
> 
> where the basic object is orientated from -x to +x
> 
> In this case the x-axis is orientated to the right, y-axis to the top and
> z-axis from camera away to the depth of the room. The full code is
> downloadable on my site, see adress at the end of the mail.
> 
> It works fine, when putting the object on a spline, it is rotated to follow
> the spline.
> 
> Next step is the proclivity of the object to rotate it in x-axis left when
> "flying" a left turn or right when "driving" a left turn.
> Not as easy as it seems, but I'm on my way ;-)
> 
> Nils
> 
> http://www.steini.de

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