Creates an a polygon (in 2D) or a planar solid (in 3D) using the finite-element geometric data stored in an unstructured dataset.
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Syntax |
Description |
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extractstructure(D); |
Creates a polygon for 2D data and a planar solid for 3D data. The parameter D is the input unstructured dataset. This function does not return any data. |
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extractstructure(D, Rel_Coplanar_Tol); |
Same as the above command, but the relative tolerance to merge coplanar elements will be set to the value specified. |
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extractstructure(D, Rel_Coplanar_Tol, Smoothing_Pass_Count); |
Same as the above command, but uses Laplacian smoothing on the surface mesh. The number of iteration is defined by the value specified. |
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extractstructure(D, Rel_Coplanar_Tol, Smoothing_Pass_Count, Smoothing_Angle_Coplanar_Tol); |
Same as the above command, but the allowed angular difference between triangles around a vertex where the vertex can be moved is set to the value specified. |
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extractstructure(D, Rel_Coplanar_Tol, Smoothing_Pass_Count, Smoothing_Angle_Coplanar_Tol, Allow_Tessalation); |
Same as the above command, but allows re-triangulation of the facets. |
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Parameters |
Type |
Description |
|---|---|---|
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D |
unstructured dataset |
Input data that is used to create the structure. |
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Rel_Coplanar_Tol |
number |
(optional) Relative tolerance to merge coplanar elements. The default value is 1e-6. |
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Smoothing_Pass_Count |
number |
(optional) In 3D only. Enables Laplacian smoothing on the surface mesh before surface extraction. The default value is 0 and the maximum allowed value is 20. |
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Smoothing_Angle_Coplanar_Tol |
number |
(optional) Sets the allowed angular difference between triangles around a vertex where the vertex can be moved. The default value is 0.001. |
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Allow_Tessalation |
number |
(optional) In 3D only. Allows re-triangulation of the facets. |
Example
Run the script file extract_2d.lsf with the CHARGE project file geom2d.ldev for a 2D example of this command. Here, we use the ID of the "CHARGE" solver region to single out any part of the structure with ID = 3, which would correspond to the semiconductor material in this example and then construct an object (polygon) in that shape.
See Also