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Virtual Terrain Project
The dream of VTP was to foster
the creation of tools for easily constructing
any part of the real world in interactive, 3D digital form.
This goal would require a synergetic convergence of the fi...
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VTBuilder
VTBuilder
Elevation Data
Load any number of elevation layers, combine or resample them.
Import elevation grids from DEM, SDTS, MicroDEM, GTOPO30, SRTM,
DTED, NetCDF, PNG, TIF, GeoTIFF, PGM, Surfer...
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Land Use and Land Cover (LULC) Data Users Guide 4
B. Sample character-formatted GIRAS data file
C. Listing of CTG map header data
D. Sample "standard" character-formatted CTG data file
ILLUSTRATIONS
Figure 2. GIRAS file structure
Figure 3. GIRAS map ...
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Sky & Atmosphere
Sky dome
A common approach is to model a dome, and either apply a texture map
or use vertex colors to provide the impression of a sky.
a
difficult to make it change with time of day
if it contain...
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BT (Binary Terrain) File Format
The BT (Binary Terrain) File Format
Author: Ben Discoe
Motivation
In 1997, i began working with elevation grids, and discovered that there
was no standard format for representing them. The USGS us...
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DEM (digital elevation model)
DEM (Digital Elevation Model) files
What It Is:
the most common kind of DEM files come from the
USGS
(U.S. Geological Survey)
a fact
sheet provides a quick introduction to DEM
the DEM stan...