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Fig. 3.6
Cube in 3D (40,000 bodies)
There is first of all the novelty of DEM, which has only been used for a few
years, but also the unsuitability of methods for representing discrete finite ele-
ments. It is for example impossible to select several 3D bodies graphically since
the notion of group of nodes forming a body is in contradiction with the spirit of
meshes used in FEM.
Representation in the form of vector elements is also a good response to this
constraint! This reinforces the choice of a data structure in the form of a graph as
in 'AutoCAD ', 'Adobe Illustrator ', 'Acrobat 3D ', etc.
In conclusion to this section, we stress the fact that GIDE is closer to to a vector
image application than bitmap streaming. This explains why we will not further
refer to remote display solutions [ 11 ] suitable for representing a very number of
data, which only partially meet our requirements.
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