Hello Ted,
if the output of the mesh generator is not correct, then this is a
problem in the mesh generator and not in the library, isn't it? If the
points are equally distributed in some sense, you could use the
GridGenerator class of deal.II to create a subdivided rectangle.
Best Regards,
Markus
Am 28.11.10 10:47, schrieb Ted Kord:
Hello Markus
The material ids can be collapsed into one value. So, the raw
geometry can be represented as: x y z material. Then, a completely
random example -- for a 3x2x2 -- would look like:
0 0 0 1
1 0 0 1
2 0 0 1
3 0 0 2
0 1 0 2
1 1 0 2
2 1 0 2
3 1 0 3
0 2 0 3
1 2 0 3
2 2 0 1
3 2 0 2
0 0 1 2
1 0 1 1
2 0 1 1
3 0 1 3
0 1 1 3
1 1 1 4
2 1 1 4
3 1 1 4
0 2 1 4
1 2 1 1
2 2 1 3
3 2 1 3
0 0 2 2
1 0 2 2
2 0 2 4
3 0 2 4
0 1 2 1
1 1 2 1
2 1 2 1
3 1 2 2
0 2 2 2
1 2 2 2
2 2 2 2
3 2 2 3
When I generate an STL file from the actual data (not the one above),
it seems like the coordinate system's changed. So, although I get a
nice mesh using the STL file as input to a mesh generator, it's
unusable without a lot of mathematical gymnastics.
Many thanks,
Ted
On 28 November 2010 06:59, Markus Bürg <[email protected]
<mailto:[email protected]>> wrote:
Hello Ted,
unfortunately I do not know a proper way but using an external
mesh generator for creating such big grids. Anyway, could you
explain the link between grid orientation and materials a bit
more? Perhabs we can find a workaround for that.
Best Regards,
Markus
Am 27.11.10 22:47, schrieb Ted Kord:
Hi
I have a geometry represented as a list of coordinates and
material ids like so: (x y z material1 material2 material3). The
max. dimensions are: 500x370x450 for a total of 83 250 000
points. I'll probably have to read in a reduced/coarse version
and then refine as required.
I'd like to explicitly read this into a triangulation. Is there a
way to do this?
I've tried mesh generation but, a) the input file is large, about
3 GB and b) the coordinates and the geometry's orientation become
transformed, and consequently destroy the mapping between
coordinates and materials.
Many thanks,
Ted
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