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student    : jhhuang
graded by  : Charles B Lee
time       : Fri Nov 19 11:55:56 EST 1999
problem set: ivray
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Eye ray generation            (0-2): 2
Cone, cyl, poly isection      (0-2): 2
Shadow                        (0-1): 0.5
Reflection                    (0-2): 1
Transmission                  (0-2): 1
Shading			      (0-2): 2
Supersampling and jittering   (0-2): 2
Statistics		      (0-1): 0.5
Exactitude                    (0-1): 1
total                        (0-15): 12
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notes:

Good job on this tough problem set.

A few comments:

For some reason your program hangs at random times.
I believe your shadow casting code goes into an infinite
loop for certain cases. I think it's because you are not
displacing enough from the hit surface so that it constantly
hit's that surface...

Also, your reflection/transmission is not quite right.
Take a look at the sphere examples.

Your statistics doesn't seem to be very useful.

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