July 2002
Intermediate to advanced
432 pages
18h 48m
English
book
Level of Detail for 3D Graphics
by David Luebke, Martin Reddy, Jonathan D. Cohen, Amitabh Varshney, Benjamin Watson, Robert Huebner
Content preview from Level of Detail for 3D Graphics
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226 Chapter
7 Terrain Level of Detail
can optionally be stored as tiles. A public domain library, called
libgeotiff,
is
available for creating software that can read and write GeoTIFF files.
BT:
The binary terrain format was developed by Ben Discoe as part of the Virtual
Terrain Project (VTP). BT files are simple, compact files that use a file name
extension
of.bt.
The 256-byte header sequence includes the grid dimensions, the
data type (floating point or integer), the projection (lat/long or UTM), and the
bounding box in geographic coordinates. See
www.vterrain.org/.
GeoVRML:
The GeoVRML file format was specifically ...
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