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student    : James Waldrop
graded by  : quark
time       : Sun Oct 25 21:16:15 EST 1998
problem set: assignment 2
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hexcone:
	visible probs?: bad color interpolation
	bad pixels (%): 16.113
	ave error: 163.472
	time(ms): 67
teapot:
        visible probs?: blocky (due to c.i.), and missing some triangles
        bad pixels (%): 16.887
        ave error: 15.777
        time(ms): 151
cow:
        visible probs?: very blocky, some wrong colors, missing triangles
        bad pixels (%): 24.175
        ave error: 30.001
        time(ms): 246
extra tri file: 

functionality (0-90): 80
extra credit (0-10): 0
total (0-100): 80
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notes: You appear to have two problems, bad color interpolation and missing
triangles.  The missing triangles are probably due to your applet not
handling small triangles well (often due to rounding error or forgetting
to round that then leads to a gross slope miscalculation--although I can't
tell if that's your problem).  As for color interpolation, I noticed at
least one problem:

	// always check from the center for pixel colors
	pik = getColor((float)x+(float)0.5, (float)y+(float)0.5);

The center of a pixel *is* the integer value, so adding a half seems like
a bad idea.  This shouldn't cause the serious problems that appear in the
hexcone rendering, though.

Otherwise, it looks pretty good.  Fairly fast.  I had to take off
a few points for not having an example triangle file of your own.
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