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Geometric Traits Classes for Projections
The classes Triangulation_euclidean_traits_xy_3<R>
is a geometric traits class allowing to
build a two dimensional triangulation of the projections
on the plane of three dimensional points.
This is the usual case when dealing with GIS terrains.
Instead of really projecting the 3D points and
maintaining a mapping between each point and its projection
(which costs space and is error prone)
this class supplies geometric predicates that ignore the
z-coordinate of the points.
#include <CGAL/Triangulation_euclidean_traits_xy_3.h>
Types
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typedef Point_3<R>
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Point;
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typedef Segment_3<R>
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Segment;
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typedef Triangle_3<R>
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Triangle;
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The GALIA project. Jan 18, 2000.