----- Original Message -----
From: "Ashley Butterworth" <macbse@...>
To: "FutureBASIC List" <futurebasic@...>
Sent: Wednesday, January 16, 2002 12:00 AM
Subject: Re: [FB] A Pointy Problem


> >In vernacular the solid cone is a teepee:  D is
> >its base; A is its peak; C is the fire in the
> >center of the base; the axis is the smoke rising;
> >and theta is the angle between the smoke rising
> >and one of the support poles from the edge of the
> >base to the peak.
> >

<snip>

Ashley , can you clarify which of the following corresponds to your problem?

[1] As used by Laurent, a finite teepee bounded by its base?
      In this case do you have to worry about the other finite teepee on the
other side of the peak being included?

[2]  A single infinite cone containing (0, 0,0), which is how I interpreted
your initial definition?

[3]  Two infinite cones, one on each side of the peak A.

In either of the latter two cases you only need to calculate phi, not any
distances.

Thanks,

Cheers,        Peter