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>> I've been marketing a program called Landscape Explorer as shareware ...
 
Yes, I'm familiar with Landscape Explorer.  Excellent work!
 
I'm obsessed with the idea of recreating landscapes that no longer
exist, and then traveling through them.  I've written several different
"Map Visualization" using tools Visual Basic to explore rendered landscapes
built with Vistapro.
 
It seems to me that - eventually - cheap PCs will be a standard tool used
in cartography through the use of programs like Landscape Explorer and
Vistapro.  I believe television news and other visual media will regularly
use these types of tools to give the public a more realistic view of
geographic areas.
 
Today a person needs to establish pre-defined paths of travel through
a landscape and generate (render) individual frames of a fly-through.
Eventually Virtual Reality applications will be written for your average
PC that enable us to travel through highly detailed landscapes in real time.
Hey, maybe in release 2.0 of Visual Explorer!
 
-Vin
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  Check out my home page for sample 3d fly-through of the Bull Run area
  in the 1860s (US Civil War):
 
  Web Home Page:    http://home.aol.com/menotomy
 
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