The special effects for the computer-display in the glider from John Carpenter's Escape From New York (1981) are really neat.
They're a neat wireframe display of the city, presumably from some kind of radar.
They made them by making a model of the city painted fully black, then put UV-florescent tape along the edges of the buildings.
Lit with a blacklight, you can only see the tape, not the matte-black blocks representing buildings.
It's amusing given that computer effects were often done because practical effects would be too expensive, this is a case of the opposite: it's 1981, computer graphics would have been more expensive, but they wanted this to look like computer graphics...
Cause this is the next one, and I think they switched to actual computer graphics for this one.
Notice the shapes on the right? they're hollow, rather than hidden-line like you'd have with real models.
The lines are also thinner.
Then one more shot of computer graphics.
Notice how the vertical line on the left moves at the end? that's supposed to be the side of the screen, whoops... I think they're moving/zooming a camera pointing at a screen
This does make sense. There's earlier computer graphics in the film.
So I think maybe they did final wireframe scene as a computer-generated test, then switched to the practical version when they realized it would be too complex/expensive to do the whole sequence that way.
But at the same time, it's done, so why not put it in the film anyway?
Here's a picture of what the model looked like when lit normally.
From https://wearethemutants.com/2017/02/14/the-glider-navigation-sequence-in-escape-from-new-york-1981/ …
Here's another picture of it, showing the scale:
This is because the animator was going off this concept art by Ralph McQuarrie, which was an earlier design.
By the time it'd been changed, there was no time left to re-render the animation. So it's wrong in the final film (even the remastered versions!)
re-rendering was expensive back in the 80s. Computers were slow.
Like, there was a problem discovered when rendering this complex computer-generated shot from Star Trek II: The Wrath of Khan (1982).
But you probably can't see it at this resolution...
And right around when they'd rendered up to this point, they realized that the camera was going to hit the mountain ahead.
Whoops! But changing the layout would mean they'd have to re-render HUNDREDS of frames! that would take forever.
BTW, I forgot to mention the other Star Wars connection:
The company hired to do this ground-breaking computer animation?
George Lucas's Industrial Light and Magic!
Speaking of which, did you ever wonder how they make the Star Wars titles?
They're simple to generate them on a computer, of course, but this had to be done in 1977 or earlier. Computing power was at a premium.
The answer is remarkably simple, and shows how much they had to work to do even the simplest effects back in those days...
They painted them onto glass, then had a motorized camera move down them!
from http://www.artofthetitle.com/title/star-wars/ …
the first part is a piece of glass with "THE THING" painted on it, in reverse, so only the letters are transparent.
Then there's a black plastic garbage bag, which is being set on fire so it melts slowly from the bottom up, revealing the light behind it
The final step is how it's made to cast rays, and glow.
In front of the piece of glass & garbage bag, there's a fishtank full of smoke.
It's a very neat, unique, and simple effect that you can totally see once you know how it's done.
It's really just a piece of thin plastic burning up!
But shot right, with the transparency in front of it, and the smoke? It looks AWESOME.
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