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DVscat_to_tet
Synopsis
convert a scattered grid into triangular or tetrahedral unstructured mesh
module DVscat_to_tet { /* converts scattered data into triangular
or tetrahedral mesh */
Grid+Xform+Iparam &in { /* input field */
nnodes+req;
nspace+req;
};
int+Iparam triangle=0;
Cells+write+nonotify out_mesh;
Mesh+nonotify+OPort2 &out => merge(out_mesh, in);
method+notify_val+notify_inst scat_to_tet_update<status=1>
= "DVscat_to_tet_update";
};Description
Vscat_to_tet converts a field with a scattered grid into a triangular or tetrahedral mesh. A "scattered grid" means that there is a structured mesh made up of disconnected nodes in space. An example would be seismic data where the coordinates are the latitude, longitude, (and perhaps elevation) of a sensing station, and the Node_Data is a set of observations. The grid is "scattered" because the data samples are located at arbitrary positions in space, not on any grid. Fields whose meshes have nspace=2 are always converted to triangular unstructured meshes. nspace=3 meshes are usually converted to tetrahedral unstructured meshes. But, if triangle does not equal 0, they are converted to triangular meshes (2D surface existing in 3-space).
Input
An integer. If this flag is 0 and nspace=3, the field is converted to a tetrahedral mesh. If this flag is not 0 and nspace=2 or nspace=3, the field is converted to a triangle mesh.
Output
This output is a new unstructured Mesh object that has been organized into Cells: cell type Tri (for nspace=2 or nspace=3 with triangles on input) or Tet (nspace =3 input).
The output is a reference to a merge of the new unstructured Mesh object and the original Node_Data.
Example
Libraries.Main.Mappers.scat_to_tri
File
See also
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