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PC World 1999 July
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jbpompei.txt
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1999-05-05
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TITLE: Les derniers jours de Pompei
NAME: Jerome BERGER
COUNTRY: France
EMAIL: bergerj@iname.com
WEBPAGE: http://www.enst.fr/~jberger
TOPIC: History
COPYRIGHT: I SUBMIT TO THE STANDARD RAYTRACING COMPETITION COPYRIGHT.
JPGFILE: jbpompei.jpg
ZIPFILE: jbpompei.zip
RENDERER USED:
POV-Ray for linux v 3.1
TOOLS USED:
Arabeske, Giles Tran's tree include, gcc, the Gimp, XEmacs
RENDER TIME:
parse 39s, render 11h 31m 36s
HARDWARE USED:
P-II 333MHz, 64Mo RAM, Linux
IMAGE DESCRIPTION:
"Pompei's last days", everybody has run off and the town is left to ash
clouds
and distant lava flows.
DESCRIPTION OF HOW THIS IMAGE WAS CREATED:
I first made the road (with somebody's wall macro, he didn't put his name in
the file and I didn't note it so I can't give the credit where it's due,
sorry),
and a simple cone for the volcano (the scale is right btw), then I fought a
long
time to get the medias right (part of the problem was due to C++Builder which
didn't compile my code correctly and got corrected when I switched to linux and
gcc...).
I then added the tree (with Gilles Tran's fantastic macro), the grass patch
(an adaptation from a macro submitted by somebody during the long thread on
grass in povray.binaries.images) and the plazza (a box with a texture done with
Arabeske, the fountains are simple CSGs of a couple of toruses, cylinders and a
lathe).
Then I made the temple by simple CSG, the lightning made it appear flat, so I
added the two torches. It is to be noted that the doors were really modelled:
the square are actual indentations and not a texturing trick.
I modelled a house, then put copies in three places with different angles of
view. It is mostly a CSG of boxes, except the roof for which individual tiles
where modelled with cylinders (you can actually see it on the top roof of the
house on the right back). I had to uses manual bounding boxes there, even
though
they generetated a lot of warnings (my guess is 88 a house but I didn't check
exactly) because they speeded up the render considerably (in general, I think
that whenever you have a regular union of a lot of objects, such as tiles on a
roof or bricks on a wall, and if it doesn't take up much room in the final
image, then you'd better put bounded_by statements and to hell with pov's
warnings).
Finally, I made the lava flow as a csg of cylinders and spheres.
Unfortunately, it was so slow to render (even with a bounding box) that I had
to
comment it out and replace it by a texture on the volcano cone. If anybody has
got the time (and computing power) to render the pic with it (and with
media_interaction on for the sun) I'd be interested in seeing the result...
Notes:
- it would certainly look better with people running for their lives or just
staring in awe, but I don't have Poser and I didn't have the time to model them
directly in Pov or with sPatch.
That's all folks!!!