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Using DEM data of Thunder Bay,
Ontario as a heightfield makes these clouds form a realistic
shape. The surface defines a mist volume, and
skycolor.cal provides the nice sky. The ground is simply a plane.
12 min on O2, final size 512x512, 25 KB JPG |
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Headlights on two trees in some fog,
-me 0.01 -ma 0.9 -ms 0.1, rendered at 1536x1536.
Trees models were built with Laurens Lapre's excellent
lparser software.
10 hrs on O2, final size 512x512, 60 KB JPG |
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View of the moon, to accomplish bump-
mapping with Radiance, I simply polygonized a bump-map. Yeah,
its the brute-force method, I've got compute cycles to burn.
0.5 hr on O2, final size 512x512, 48 KB JPG |
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Shadow of a tree, created with my own
Radiance-output capable version lparser, found
here: lparser.c, lparser.txt.
3 hr on O2, tons of -ds, final size 512x512, 47 KB JPG |
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Tropical island, with a little snow and
some procedural textures, also with a little atmospheric haze.
1 hr on O2, 2 amb bounces, final size 512x256, 24 KB JPG |
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A tropical island. The heightfield was created completely with
Netpbm tools pgmramp and ppmforge, eroded with Jon Beale's er1u,
converted and scaled with my own hftools
programs, and rendered in Radiance. It took
1 hour on O2, final resolution is 768x512, 66KB JPG |
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Placing a mist object beneath the clouds
creates a nice sunbeam effect. Try using -ms 50 on the command
line. The clouds are 1000 units up, and I used a extinction
coeff of 0.0004 and albedo of 0.99.
5 hours on O2, final resolution is 512x512, 24KB JPG |
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This is a test of a routine to
apply depth cueing by fading pixels to the background sky
color based on the distance from the viewpoint. Here are some
of my notes about it:
CLOUD_HINTS.
0.5 hour on O2, final res is 512x256, 58KB JPG |
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I finally rewrote my pipes
program in C: pipes.c.
It compiles on IRIX and Linux, and writes a Radiance
description of a series of pipes, much like that nifty
Windows GL screen saver...except this one doesn't
make an animation. Damn, those penumbras take a while!
2 ambient bounces, 2.5 hrs on SGI O2, 512x512, 139KB GIF |
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Some modular tower, made of 16m
cube frozen octree files for the modules. Precursor to a
larger arcology rendering...coming.
1 ambient bounce, 1 hr on HP 715/64, 512x512, 45KB JPEG |
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USGS Digital
Elevation Model for the Denver West area, converted to
Radiance-readable gensurf heightfield by a quickie Java program.
DEMs for most of the US are distributed for free by
FTP.
no ambient bounces, 2 min on AMD K5, 512x512, 183KB GIF |
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Output from a more advanced terrain
program, written in Java. This one reads elevations from a .pgm
file, creates the Phong-shaded terrain from a gensurf
command, then adds trees per another .pgm file. The land grid
is 125x125, and there are 3000 trees in the scene.
2 ambient bounces, 9 hrs on AMD K5, 1024x768, 135KB JPEG |
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Preliminary output from a terrain
program I am writing for Radiance. It takes spline knot input
from the contour lines on a topographic map, discretizes the
scene, solves a Laplacian to fill in the gaps, and writes
a gensurf-readable heightfield file. A helper app
dumps some trees on it at the correct altitude.
39KB JPEG |
