In article <39b54196@news.povray.org>, "David Vincent-Jones" 
<geo### [at] galaxynetcom> wrote:

> Can somebody please tell me why the Turn is not working....
> 
> #declare Start=<0,0,20>
> #declare End=<8,0,30>
> #declare Dist=vlength(Start-End);
> #declare Turn=vrotate(Start,End);
> 
> box {<-1,-1,-1>,<1,1,1> texture {pigment {checker color Black, color
> White } }
> scale <(Dist),1,1> translate<-Dist,0,0> rotate y*Turn  translate End
>  }
> 
> I am trying to place a box with its centerline sitting on the Start 
> and End vectors...

First, this is not a windows specific question, you would be better off 
asking it in povray.advanced-users or povray.general.

As for your problem, what exactly are you hoping to do with this line?

#declare Turn=vrotate(Start,End);

I think you have a fundamental misunderstanding of what the vrotate 
function is. All this line does is assign the result of rotating Start 
by End to the Turn variable. And what do you mean by "centerline"? The 
diagonal from one point to the opposite point? Are their any other 
constraints you want to put on the box's orientation, or don't you care, 
as long as it is oriented along the right vector and in the right place?
More in povray.advanced-users...

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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