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1992-10-28
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F R A C L A N D
- A fractal landscape generator -
- by Andrew Lewis -
- Original Idea by Peter Millerchip -
- Version 1.3b 28th October 1992 -
Fracland is a fractal landscape generator, using pseudo random
midpoint displacement to generate a landscape of "infinite"
detail.
Required Hardware:
286 PC or greater, running DOS 3.x or better
256K of RAM, almost guaranteed with 286's
IBM VGA card or compatible, 16bit preferably
A Microsoft serial mouse, or other rodent with a compatible
driver. Really anything that supports Int 33h calls.
A Hard disk is preferable
To start Fracland, make sure the mouse driver is loaded, and type
FRACLAND. The files FRACLAND.DAT and FRACLAND.DA2 must also be
present.
The program is very simple to use, just move the rectangle around
the landscape and press the left mouse button to zoom in by a
factor of two. Initially, a few zoomins are required before the
landscape starts looking as it should. The buttons on the right
are self explanatory, with the 3D option rendering the current
landscape as a 3D isometric height field. Any very large heights
are clipped. The Newland button restarts the landscape without
having to exit the program. Also the colour of the landscape can be
changed by clicking on the paint can icon.
One of the effects of the algorithm used is that if you zoom in on
just land or sea after a few zooms the landscape will break up, and
very strange things can happen. This is due to the height of the
point wrapping around from land to sea or sea to land. This will
not occur in normal coastline zooming. If this does happen, then
selecting NEW LAND will restart the landscape.
-------------------------------------------------------------------
This version is PC implementation of the program !FracLand2
written for the Acorn Archimedes. This features a larger grid and
a different light souring algorithm. It is also public domain and
should be available from any Archimedes BBS, including The World
of Cryton on +44 (0)749 670030. !FracLand2 was written by Peter
Millerchip, who also produced the sprites for this version in
!Paint on the Arc.
Contact:
Andrew Lewis -
spulewis@uk.ac.rdg.susssys1 (Janet)
spulewis@susssys1.rdg.ac.uk (Internet)
or snail mail -
25 Lackford Close
Brundall
Norwich
NR13 5NG
Pete Millerchip -
ssumille@uk.ac.rdg.susssys1 (Janet)
ssumille@susssys1.rdg.ac.uk (Internet)
or snail mail -
23 Portway Close
Reading
Berkshire
RG1 6LB
Copying details -
All versions of Fracland are Public Domain, and no one should
have to pay for a copy, apart from disk duplication costs from
a shareware library. Also these programs are NOT to be bundled
with any form of commercial package without prior consent from
the authors.
Disclaimer -
There is no expressed or implied warranty that this program is
suitable for any purpose. The authors are not responsible for any
loss of earnings or expenses incurred as a result of using this
software.
---------------------------------------------------------------
Version History
!Fracland - Original Archimedes desktop version, very slow and
small grid size.
!Fracland2 - New ARM code Archimedes version, on which the PC
version was written in parallel.
Fracland Version 1.0 - First PC version, no height changes or
colour map or new land, also some strange
bugs.
Fracland 1.2 - Height change introduced to user-select roughness.
Fracland 1.3 - New land and new colour palette options added. First
full release.
Fracland 1.3b - Small bug fix that should stop the program crashing
on some machines (some 386's).
--------------------------------------------------------------
And finally....
A big "Hi" to Clare, Simon R, Husein G, David T and Rob V. Their
derisive comments about my coding ability kept me going long after
I might of given up!