43 lines
1.9 KiB
Text
43 lines
1.9 KiB
Text
You need the Gnu Triangulated Surfaces library (GTS) installed on your
|
|
system to build portions of TerraGear. GTS provides the needed tools
|
|
and infrastructure to impliment our terrain simplification approach.
|
|
We modeled our approach after the approach outlined in Michael
|
|
Garland's paper here:
|
|
|
|
http://graphics.cs.uiuc.edu/~garland/software/terra.html
|
|
|
|
You can get the latest version of GTS from:
|
|
|
|
http://gts.sourceforge.net/
|
|
|
|
More information:
|
|
|
|
GTS stands for the GNU Triangulated Surface Library. It is an Open
|
|
Source Free Software Library intended to provide a set of useful
|
|
functions to deal with 3D surfaces meshed with interconnected
|
|
triangles. The source code is available free of charge under the
|
|
Free Software LGPL license.
|
|
|
|
The code is written entirely in C with an object-oriented approach
|
|
based mostly on the design of GTK+. Careful attention is paid to
|
|
performance related issues as the initial goal of GTS is to provide
|
|
a simple and efficient library to scientists dealing with 3D
|
|
computational surface meshes.
|
|
|
|
A brief summary of its main features:
|
|
|
|
* Simple object-oriented structure giving easy access to
|
|
topological properties.
|
|
* 2D dynamic Delaunay and constrained Delaunay triangulations.
|
|
* Robust geometric predicates (orientation, in circle) using fast
|
|
adaptive floating point arithmetic (adapted from the fine work
|
|
of Jonathan R. Shewchuk).
|
|
* Robust set operations on surfaces (union, intersection, difference).
|
|
* Surface refinement and coarsening (multiresolution models).
|
|
* Dynamic view-independent continuous level-of-detail.
|
|
* Preliminary support for view-dependent level-of-detail.
|
|
* Bounding-boxes trees and Kd-trees for efficient point location
|
|
and collision/intersection detection.
|
|
* Graph operations: traversal, graph partitioning.
|
|
* Metric operations (area, volume, curvature ...).
|
|
* Triangle strips generation for fast rendering.
|