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1994-06-16
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About the files in this DEM1 - DEM6 Directories
A DEM is a Digital Elevation Map for VistaPro, sometimes referred to as a
'scape' or landscape. It is a 3D object you can render with the Vista or
VistaPro software from Virtual Reality Laboratories in San Luis Obispo, CA.
If you want more information on VistaPro, contact VRLI at 805-545-8515.
VistaPro ace programmer, Clint Woeltjen, has informed MegageM that these
DEM files can be used on both the Amiga and MSDOS/clone versions of
VistaPro.
You can use them in a variety of ways for Vista 3-D renderings and terrific
fly-by animations of the Mandelbrot Set and some other related fractals.
The first 5 sets were made using FractalPro, MegageM's fractal art and
animation package. FractalPro has a capability to create Vista type
landscape (DEM) files as it draws its fractal images.
The sixth set of DEMs was made using ScapeMaker which can convert most
Amiga IFF images into Vista landscape files. ScapeMaker was used on some
other FractalPro pictures to create the sixth set.
Of course if you like this idea of rendering 3D visions of fractal objects,
FractalPro is the tool to use. FractalPro will generate these kinds of
DEM files for you 'on the fly' as it renders images of fractals on an
Amiga. Also consider using MegageM's ScapeMaker program which can let
you convert 2D drawings to DEMs and can also let you manipulate and
combine any DEMs from a variety of sources, not just from 2D drawings
or from FractalPro.
The DEMs on these sets represent many many hours of FractalPro exploration
and DEM creation, so you get a selection of 76 DEM files and can do
your own terrific 3-D fractal renderings quickly with Vista and VistaPro.
I tried to get at least one Vista rendering of one of the DEMs in each
set, so you could get a quick feel for what they're going to look like.
I also segregated the different types of fractals and types of DEMs on
the different sets. There are 6 different sets in this group with:
1. FractalPro Mandelbrot Mountains
2. FractalPro Julia Set Mountains
3. FractalPro Mandelbrot and Julia Set Lakes
4. FractalPro Cube Mandelbrot Set Mountains and Lakes
5. FractalPro Cube Julia Set Mountains and Lakes
6. ScapeMaker/FractalPro Mandelbrot and Julia Lakes
Each of these sets is in its own directory, namely, DEM1, DEM2, etc.
Cube Mandelbrot and Cube Julia Sets can be generated in FractalPro and they
are mathematically related to regular Mandelbrot and Julia Sets, but with
a twist. Look 'em over.
Vista Rendering Tips for Fractal Scapes
Fractals are by their nature rather 'noisy'. If you find some of the
DEMs tend to render with high 'spikes' next to deep ruts, try using
ScapeMaker or VistaPro's SMOOTH option (maybe even more than once) to
smooth them out. You'll get the best results using Vista and VistaPro
Gouraud Shading or Altitude Shading and Polygon 1 setting. You'll also
find that having a high camera elevation gives you the best 'view' over
these DEMs.
Daniel Wolf
6/6/94