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aa999.txt

Associated article: Rendering Line Drawings From 3D Models

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Published source code accompanying the article by Thomas E. Janzen in which he examines a trio of algorithms for generating simple, yet precise, line drawings from complicated and imprecise 3D models. Also see AA999.ZIP.

					Algorithm Alley
by Thomas E. Janzen


Listing One
for (i = 1; i < (gw - 1); ++i) {
  for (j = 1; j < (gh - 1); ++j) {
    suma = 0.0; sumb = 0;
    for (io = -1; io <= 1; ++io) {
      for (jo = -1; jo <= 1; ++jo) {
        suma  += sobelaM[io+1][jo+1] * ...
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