Category Archives: Technology

CPAN vs. dot-underscore

I was so keen on the idea of pushing a module to CPAN that I almost didn’t catch a fatal flaw in my scheme. Mac OS X (motto: It Just Works) was doing something odd to my tarball as it was created: it was adding a whole host of files that weren’t there originally. Not just the .DS_Store files we all know and love (and learn to remove), but odd shadow files like ._foo.txt for foo.txt and ._Makefile.PL for Makefile.PL.

Yep. Now you might see the problem.
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seeing around corners

I’ve been trying desperately to determine why this technique for “reconstructing a scene from a different vantage point”:http://graphics.stanford.edu/papers/dual_photography/ is useful (as opposed to just a neat trick). It’s probably a great technique for use with live-action-plus-CG films, but I’m at a loss to find any other application.

Still, it reminds me of a discussion I had with Adam Houston a while back about using a regular wall as a mirror by reconstructing the paths of all the light rays hitting it. They aren’t quite doing that, but they can still see the back face of a playing card using a similar trick. (View the video at the bottom to see the trick in action.)

the best they can do

Oh, this is just too sad for words. The other day I noticed an ad for the new “GMC Sierra Hybrid Pickup”:http://www.gmc.com/sierra/hybrid_popup.jsp. I was surprised by the idea that US automakers were finally getting on the hybrid bandwagon. Turns out I shouldn’t have been.

Read on for the rant…
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