Vidar Madsen <vid### [at] prosalgno> writes:

> Hi all. C'est moi, again. ;-)

  C'est moi aussi...

> How do I calculate the vertices of a cylinder, given the coordinates
> of the (center) end-points? I need to draw a disc, and "point it" towards
> the other end-point, but I'm totally stuck. The net offers plenty of
> information on how to calculate the normal vector from a surface, but
> I need the other way around (i.e. a surface on which <0,0,0> points
> towards <x,y,z>) .. :-/

  Well...  If you want your disc to be oriented such as its normal points
to D from its position P, you just have to have its normal colinear to the
PD vector.  For instance, use the PD = D - P vector.

  If it's about a cylinder...  I don't understand the question.

Roland.
-- 
Les francophones m'appellent Roland Mas,
English speakers call me Rowlannd' Mass,
Nihongode hanasu hitoha [Lolando Masu] to iimasu.
Choisissez ! Take your pick ! Erande kudasai !

Post a reply to this message