mirror of
https://github.com/NGSolve/netgen.git
synced 2024-11-12 00:59:16 +05:00
50 lines
2.0 KiB
C++
50 lines
2.0 KiB
C++
|
#ifndef FILE_BCFUNCTIONS
|
||
|
|
#define FILE_BCFUNCTIONS
|
||
|
|
|
||
|
|
// Philippose - 14/03/2009
|
||
|
|
// Auxiliary functions for OCC Geometry
|
||
|
|
// Use this file and the corresponding ".cpp"
|
||
|
|
// file to add miscellaneous functionality
|
||
|
|
// to the OpenCascade Geometry support in Netgen
|
||
|
|
namespace netgen
|
||
|
|
{
|
||
|
|
/*! \brief Automatically assign boundary conditions for meshes
|
||
|
|
|
||
|
|
This function allows the boundary condition numbers of a
|
||
|
|
mesh created in Netgen to be automatically assigned based on
|
||
|
|
the colours of each face.
|
||
|
|
|
||
|
|
Currently, two algorithms are utilised to assign the BC Properties:
|
||
|
|
1. Automatic assignment using a user defined colour profile file
|
||
|
|
which defines which RGB colours are to be assigned to which
|
||
|
|
BC Property number
|
||
|
|
- A default profile file exists in the Netgen folder called
|
||
|
|
"netgen.ocf"
|
||
|
|
|
||
|
|
2. The second algorithm uses the following automated algorithm:
|
||
|
|
- Extract all the colours present in the mesh
|
||
|
|
- Use colour index 0 (zero) for all faces with no colour defined
|
||
|
|
- Calculate the number of faces of the surface mesh for each colour
|
||
|
|
- Sort the number of surface elements in ascending order, with the
|
||
|
|
colour indices as a slave
|
||
|
|
- Use the indices of the sorted array as the BC property number
|
||
|
|
|
||
|
|
Example: If there are 3 colours, present in the mesh and the number
|
||
|
|
of surface elements for each colour are:
|
||
|
|
- Colour 0: 8500
|
||
|
|
- Colour 1: 120
|
||
|
|
- Colour 2: 2200
|
||
|
|
- Colour 3: 575
|
||
|
|
|
||
|
|
The above is sorted in ascending order and assigned as BC Properties:
|
||
|
|
- BC Prop 0: 120 : Colour 1
|
||
|
|
- BC Prop 1: 575 : Colour 3
|
||
|
|
- BC Prop 2: 2200 : Colour 2
|
||
|
|
- BC Prop 3: 8500 : Colour 0 (no colour defined)
|
||
|
|
*/
|
||
|
|
//extern void OCCAutoColourBcProps(Mesh & mesh, OCCGeometry & occgeometry, const char *occcolourfile);
|
||
|
|
extern void AutoColourBcProps(Mesh & mesh, const char *bccolourfile);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|