[dahart]

I'm only arguing for fun, and because I love 3d graphics, don't take this personally. I'm upvoting your comment to offset my argumentative reply. :)

You say 'games and movies' like those are niche markets. You can't watch any TV without seeing 3d graphics. And chances are you see a lot more 3d on your computer than you think while you work. Windows, Mac OSX, & Linux all have 3d hardware accelerated windowing features for task switching, virtual desktops, and lots of other fun tidbits. Plus, you might not be playing enough games, if you play games less than 1% of your time.

I'm not sure who's over focused on 3d, but it'd be pretty weird to put together a site like scratchapixel.com without 3d.

Finally, Bresenham's algorithm has historical significance, but is no longer generally useful, even for line drawing. Maybe if it's gone from CGP&P, that's a clue? Aliased, single pixel wide lines are almost never used. If you want soft edges or thick lines or curves or texture, you're a lot better off focusing on polygons from the start.