> Based on what little I can find in the source code for the definition of V
> and H,
> it would seem that the raytrace is wrong. If H defines the interior length
> of the
> cylinder, then making r1=50; r2=25; |H|=50 should result in a pill 125 units
> long.
> The raytrace makes me believe that something in the shot() routine is maybe
> treating H as defining the exterior length of the entire particle, in which
> case the
> "pill" is 50 units long as r2 is completely inside of r1, and results in just
> the r1
> sphere.
I don't think H is treated as defining the exterior length of the entire
particle. In the case above, the "pill" is 100 units long, not 50 (the diameter
of the sphere is 2*r1 = 100). Also, this solid, when raytraced, is NOT a
sphere. H still defines the interior length of the cylinder (the distance
between the centers of the two hemispheres). Only when r1 = r2 + |H| (r1 > r2),
(i.e. r1=50, r2=25, |H|=25) the raytrace result will be a sphere. At this time,
r2 is an inscribed sphere of r1. The shape of ray tracing is almost the same as
the plotted one, but it's a "smoothened" one.
Cheers!
Wu
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