"Kima" <nomail@nomail> wrote:
> Consider an object centred at <0,0,0>
>
> box{<-2,-1,-1>,<2,1,1>}
>
> and a vector define by two points (V = P2 - P1). How we can rotate the object to
> be along with the given vector?
>
> My idea is to calculate the normalized vector of V, then calculate the arcsine
> and arccosine for the corresponding axis.
>
> However, I feel it is not the right way or at least an overkill. Seems like I've
> missed my geometry class!

This is a somewhat common need, and POV-Ray has some macros written to help.

Check out
Reorient_Trans( Axis_1, Axis_2 )
and
Point_At_Axis( New_Y_Axis )

in "transforms.inc"

http://www.f-lohmueller.de/pov_tut/trans/trans_470e.htm

Post a reply to this message