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<p>I finished grading the homeworks and generally the class did very
well over the problems I chose to grade. A few things are worth
noting:</p>
<p>1. There are some transformations that are commutative -- like
multiple scalings, or even scaling and rotation. However, we
demonstrated in class that translation and rotation are NOT
commutative.</p>
<p>2. For the displayport transformation, it was possible to build a
single transformation matrix from the individual translation,
scale, and translation matrices. Many of you just applied the
three matrices, but did not try to build the one transformation
matrix.</p>
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<div class="moz-signature">-- <br>
<b>Andrew J. Pounds, Ph.D.</b><br>
<i>Professor of Chemistry and Computer Science</i><br>
<i>Director of the Computational Science Program</i><br>
<i>Mercer University, Macon, GA, 31207 (478) 301-5627 </i></div>
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