Subject:
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Re: LEGO in CG classes was: easier parts authoring
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Newsgroups:
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lugnet.cad.dev, lugnet.edu
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Date:
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Tue, 15 Mar 2005 20:11:47 GMT
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Viewed:
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6774 times
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In lugnet.cad.dev, Darrell Urbien wrote:
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Hey, Stefan, that was neat! May I share it with my class? Any chance you
could post some of the other things your class has created?
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(Sorry for the late reply, I forgot to check up on the thread.)
You may share the movie freely, just keep the credits in there.
The other Lego-related student animations I would have liked to
share were computer-animated Lego minifig remakes of two movie
scenes: the initial scene of “The Good, the Bad and the Ugly” and
the scene from “Pulp Fiction” where Marvin accidentally gets shot
in the head in the back seat of a car. Sadly, I never got my
students’ permissions to keep or share those. (I did keep them
anyway, secretly, but I won’t share them without permission.)
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One question: The credits list MLCAD and LDraw as applications used in the
creation of the video - can you elaborate on this? Did they use LDraw
measurements (or actual parts) in the final video? Or were those programs
used only for reference?
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They used the LDraw parts database for all pieces, converted through
Polytrans which is not listed because they used it without a license.
The assembly animation was done by disassembling an imported MLCad
model and reversing the keyframing. The camera action and the minifig
animations were done separately. The stylized rendering was done in
a strange but clever fashion: they didn’t use a “toon”-style renderer,
but instead rendered everything twice: one image with lighting and
correct colors, and one image with a unique constant color for each
part, on which they used the “find edges” filter from Photoshop to
post-process and composite the resulting edges onto the image.
This seemingly awkward rendering method is actually a whole lot
faster than enabling the standard toon rendering edges in 3DS Max.
I’ve used their idea myself later, with some modification.
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I’ve been incorporating LEGO into my 3D AutoCAD class since 2001.
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Good to hear I’m not alone. I’m putting together a couple of
Lego-themed exam questions for my computer graphics course right
as we speak.
Stefan
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Message is in Reply To:
 | | LEGO in CG classes was: easier parts authoring
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| (...) could post some of the other things your class has created? One question: The credits list MLCAD and LDraw as applications used in the creation of the video - can you elaborate on this? Did they use LDraw measurements (or actual parts) in the (...) (20 years ago, 9-Mar-05, to lugnet.cad.dev, lugnet.edu, FTX)
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