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dmhinden.txt
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1999-05-05
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TITLE: Oh, the humanity...
NAME: David Morgan-Mar
COUNTRY: Australia
EMAIL: mar@physics.usyd.edu.au
WEBPAGE: http://www.physics.usyd.edu.au/~mar/
TOPIC: History
COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT.
JPGFILE: dmhinden.jpg
ZIPFILE: dmhinden.zip
RENDERER USED:
POV-Ray 3.1
TOOLS USED:
Paint Shop Pro 5.01 (material maps, editing of image
maps, and jpeg conversion)
Paper, pencil, ruler.
"Hindenburg, An Illustrated History", Rick Archbold,
ISBN 0-297-81423-0
RENDER TIME:
5 hours, 40 minutes, 16 seconds
HARDWARE USED:
Pentium II 350MHz, 64MB
IMAGE DESCRIPTION:
"Here it comes, ladies and gentlemen, and what a sight it is, a
thrilling one, just a marvellous sight. It is coming down out of the
sky pointed toward us, and towards the mooring mast. The mighty diesel
motors roar, the propellers biting into the air and throwing it back
into gale-like whirlpools...
"No one wonders that this great floating palace can travel through the
air at such speed with these powerful motors behind it. The sun is
striking the windows of the observation deck on the eastward side and
sparkling like glittering jewels against a background of black velvet...
"It's burst into flames! Get this, Charlie, get this, Charlie. Get out
of the way, please, oh, my, this is terrible, oh, my, get out of the
way, please! It is burning, bursting into flames and is falling on the
mooring mast and all the folks we... this is one of the worst
catastrophes in the world! Oh, it's four or five hundred feet into the
sky, it's a terrific crash, ladies and gentlemen. Oh, the humanity!"
- Herbert Morrison, Lakehurst, New Jersey, May 6, 1937, 7:25 pm.
DESCRIPTION OF HOW THIS IMAGE WAS CREATED:
This is a recreation of an actual photograph of the Hindenburg
explosion which ended the era of the rigid airships. The original
photo is monochrome, so I had to come up with the colours myself.
All the POV code was created by hand - no modellers were used.
I figured for the History topic a recreation of an actual newspaper
page from history would be a good idea. I found a book with the actual
New York Times front page for the day after the disaster, and scanned
it in to make the border of this image. The photograph on that front
page was not as dramatic as this one, so I took the liberty of
recreating the better photo.
The image was created in one pass through POV-Ray - the central image
was not rendered first and image-mapped on to a newspaper. The
newspaper surrounding the picture is an imagemap scan of the actual
New York Times front page for the day after the disaster, slightly
rearranged to give more space to the picture. It is mapped on to an
intersection of two flat boxes, leaving a hole in the centre to show
the rest of the image through the middle.
The airship itself is a surface of revolution, with a custom normal
slope_map to give the ribbing where the internal girders hold the
skin in place. The girderwork can be seen at the stern as the skin
of the ship burns away - this was done by using a material map for
the skin and making part of it transparent. The girders are just
long, thin boxes.
The girder-work on the mooring mast tower is also just boxes, unioned
together and a simple red/white gradient pattern applied to the whole.
The explosion was the hardest part... I had to experiment a lot to get
the media just right. Each fireball is actually a light source, so
the explosion and fire provides almost all the lighting in the scene.
The results are quite good, I think, but they still need some work to
hide the fairly obvious spherical shapes. I actually added a last
minute texture change to the enclosing objects before the final render
to make the fire texture better (which worked), but it unfortunately
also increased the obviousness of the shape outline.
The people and other objects are fairly simple CSG objects - most of
the details went into the larger pieces.
I'm quite proud of the sky. It's a sky_sphere with three layered
colour_maps to get the oppressive overcast feel. There is some subtle
colour in there to avoid the overwhelming grey effect.
Unfortunately, time really ran out on me and I haven't been able to
complete this image to the quality I would like. There are some small
details in the photograph that I wanted to model, and some of the
existing items could use a bit of refinement.
The zip file contains all the code, plus the image and material maps
used by it.