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student    : benchun
graded by  : Damian Isla
time       : Fri Nov 19 15:50:35 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): 2
Transmission                  (0-2): 2
Shading			      (0-2): 1.5
Supersampling and jittering   (0-2): 2
Statistics		      (0-1): 0
Exactitude                    (0-1): 1
total                        (0-15): 13
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notes:

Good job on a tough problem set! You had just a few little problems.

One problem was that shadows were not working -- I looked at your code
and you have the right idea, only I think the line

while ( (intersect == 1) && (trans > 0) && (distToLight > 0));

should be something more like

while ( (intersect == 1) && (trans > 0) && (distToHit < distToLight));

with distToHit assigned appropriately



Also specular highlights were not working (you had it commented out in
your code).



You didn't implement RayTraceStart and RayTraceFinish

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