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* Colour based boundary condition assignment now independent of OpenCascade function calls and can be used for all Netgen Geometry and mesh types

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* Changed the names of the files and functions used to handle colour based boundary condition number assignment 
* Change made in order to make the functionality more generic and not dependent on OpenCascade functions / Geometry
This commit is contained in:
Philippose Rajan 2009-07-11 21:03:10 +00:00
parent dd5ae2c395
commit 45e71b854e
8 changed files with 524 additions and 411 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libsrc/meshing/Makefile.am
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@ -8,7 +8,7 @@ topology.hpp boundarylayer.hpp global.hpp hpref_trig.hpp meshing.hpp \
validate.hpp classifyhpel.hpp hpref_hex.hpp improve2.hpp meshtool.hpp \
clusters.hpp hprefinement.hpp improve3.hpp meshtype.hpp \
hpref_prism.hpp localh.hpp msghandler.hpp curvedelems.hpp \
hpref_pyramid.hpp meshclass.hpp ruler2.hpp
hpref_pyramid.hpp meshclass.hpp ruler2.hpp bcfunctions.hpp
@ -23,5 +23,5 @@ libmesh_la_SOURCES = adfront2.cpp adfront3.cpp bisect.cpp boundarylayer.cpp \
pyramid2rls.cpp pyramidrls.cpp quadrls.cpp refine.cpp \
ruler2.cpp ruler3.cpp secondorder.cpp smoothing2.5.cpp \
smoothing2.cpp smoothing3.cpp specials.cpp tetrarls.cpp \
topology.cpp triarls.cpp validate.cpp zrefine.cpp \
topology.cpp triarls.cpp validate.cpp zrefine.cpp bcfunctions.cpp \
parallelmesh.cpp paralleltop.cpp paralleltop.hpp

418
libsrc/meshing/bcfunctions.cpp Normal file
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@ -0,0 +1,418 @@
#include <mystdlib.h>
#include <meshing.hpp>
namespace netgen
{
// Default colour to be used for boundary condition number "0"
#define DEFAULT_R 0.0
#define DEFAULT_G 1.0
#define DEFAULT_B 0.0
// Boundary condition number to use if a face does not have a
// colour assigned to it, or if the colour is the above defined
// default colour
#define DEFAULT_BCNUM 0
/*! Philippose - 11/07/2009
Function to check if two RGB colours are equal
Note#1: Currently uses unweighted Euclidean Distance
for colour matching.
Note#2: The tolerance used for deciding whether two
colours match is defined as "eps" and is currently
2.5e-5 (for square of distance)
*/
bool ColourMatch(Vec3d col1, Vec3d col2)
{
// Match tolerance - Adjust if required
double eps = 2.5e-5;
bool colmatch = false;
if(Dist2(col1,col2) < eps) colmatch = true;
return colmatch;
}
/*! Philippose - 11/07/2009
Function to create a list of all the unique colours
available in a given mesh
*/
void GetFaceColours(Mesh & mesh, Array<Vec3d> & face_colours)
{
face_colours.SetSize(1);
face_colours.Elem(1) = mesh.GetFaceDescriptor(1).SurfColour();
for(int i = 1; i <= mesh.GetNFD(); i++)
{
Vec3d face_colour = mesh.GetFaceDescriptor(i).SurfColour();
bool col_found = false;
for(int j = 1; j <= face_colours.Size(); j++)
{
if(ColourMatch(face_colours.Elem(j),face_colour))
{
col_found = true;
break;
}
}
if(!col_found) face_colours.Append(face_colour);
}
if(printmessage_importance >= 3)
{
cout << endl << "-------- Face Colours --------" << endl;
for( int i = 1; i <= face_colours.Size(); i++)
{
cout << face_colours.Elem(i) << endl;
}
cout << "------------------------------" << endl;
}
}
/*! Philippose - 11/07/2009
Assign boundary condition numbers based on a user defined
colour profile file.
The default profile file is "netgen.ocf"
If the mesh contains colours not defined in the profile,
netgen automatically starts assigning each new colour a
new boundary condition number starting from the highest
boundary condition number specified in the profile file.
*/
void AutoColourAlg_UserProfile(Mesh & mesh, ifstream & ocf)
{
char ocf_inp[100];
bool header_found = false;
// Number of colour specifications in the
// user profile file
int numentries = 0;
while((ocf.good()) && (!header_found))
{
ocf >> ocf_inp;
if(strcmp(ocf_inp,"boundary_colours") == 0) header_found = true;
}
if(!header_found)
{
throw NgException("AutoColourAlg_UserProfile: Invalid or empty Boundary Colour Profile file\n");
return;
}
// Read in the number of entries from file
ocf >> numentries;
if(numentries > 0)
{
if(!ocf.good())
{
throw NgException("AutoColourAlg_UserProfile: Invalid or empty Boundary Colour Profile file\n");
return;
}
PrintMessage(3, "Number of colour entries: ", numentries);
}
else
{
PrintMessage(3, "AutoColourAlg_UserProfile: No Boundary Colour entries found.... no changes made!");
ocf.close();
return;
}
// Arrays to hold the specified RGB colour triplets as well
// as the associated boundary condition number
Array<Vec3d> bc_colours(numentries);
Array<int> bc_num(numentries);
// Actually read in the data from the file
for(int i = 1; i <= numentries; i++)
{
int bcnum;
double col_red, col_green, col_blue;
ocf >> bcnum;
// Boundary condition number 0 is reserved for
// faces which have the default colour Green (0.0,1.0,0.0)
if(bcnum < 1) bcnum = 1;
bc_num.Elem(i) = bcnum;
ocf >> bc_colours.Elem(i).X()
>> bc_colours.Elem(i).Y()
>> bc_colours.Elem(i).Z();
if(!ocf.good())
throw NgException("Boundary Colour file error: Number of entries do not match specified list size!!\n");
// Bound checking of the values
// The RGB values should be between 0.0 and 1.0
if(bc_colours.Elem(bcnum).X() < 0.0) bc_colours.Elem(bcnum).X() = 0.0;
if(bc_colours.Elem(bcnum).X() > 1.0) bc_colours.Elem(bcnum).X() = 1.0;
if(bc_colours.Elem(bcnum).Y() < 0.0) bc_colours.Elem(bcnum).X() = 0.0;
if(bc_colours.Elem(bcnum).Y() > 1.0) bc_colours.Elem(bcnum).X() = 1.0;
if(bc_colours.Elem(bcnum).Z() < 0.0) bc_colours.Elem(bcnum).X() = 0.0;
if(bc_colours.Elem(bcnum).Z() > 1.0) bc_colours.Elem(bcnum).X() = 1.0;
}
PrintMessage(3, "Successfully loaded Boundary Colour Profile file....");
ocf.close();
// Find the highest boundary condition number in the list
// All colours in the geometry which are not specified in the
// list will be given boundary condition numbers higher than this
// number
int max_bcnum = 0;
for(int i = 1; i <= bc_num.Size();i++)
{
if(bc_num.Elem(i) > max_bcnum) max_bcnum = bc_num.Elem(i);
}
PrintMessage(3, "Highest boundary number in list = ",max_bcnum);
Array<Vec3d> all_colours;
// Extract all the colours to see how many there are
GetFaceColours(mesh,all_colours);
PrintMessage(3,"\nNumber of colours defined in Mesh: ", all_colours.Size());
if(all_colours.Size() == 0)
{
PrintMessage(3,"No colour data detected in Mesh... no changes made!");
return;
}
int nfd = mesh.GetNFD();
for(int face_index = 1; face_index <= nfd; face_index++)
{
// Temporary container for individual face colours
Vec3d face_colour;
// Get the colour of the face being currently processed
face_colour = mesh.GetFaceDescriptor(face_index).SurfColour();
if((face_colour.Length2()) && (!ColourMatch(face_colour,Vec3d(DEFAULT_R,DEFAULT_G,DEFAULT_B))))
{
// Boolean variable to check if the boundary condition was applied
// or not... not applied would imply that the colour of the face
// does not exist in the list of colours in the profile file
bool bc_assigned = false;
for(int col_index = 1; col_index <= bc_colours.Size(); col_index++)
{
if((ColourMatch(face_colour,bc_colours.Elem(col_index))) && (!bc_assigned))
{
mesh.GetFaceDescriptor(face_index).SetBCProperty(bc_num.Elem(col_index));
bc_assigned = true;
break;
}
}
// If the colour was not found in the list, add it to the list, and assign
// the next free boundary condition number to it
if(!bc_assigned)
{
max_bcnum++;
bc_num.Append(max_bcnum);
bc_colours.Append(face_colour);
mesh.GetFaceDescriptor(face_index).SetBCProperty(max_bcnum);
}
}
else
{
// Set the boundary condition number to the default one
mesh.GetFaceDescriptor(face_index).SetBCProperty(DEFAULT_BCNUM);
}
}
}
/*! Philippose - 11/07/2009
Assign boundary condition numbers based on the colours
assigned to each face in the mesh using an automated
algorithm.
The particular algorithm used has been briefly explained
in the header file "occauxfunctions.hpp"
*/
void AutoColourAlg_Sorted(Mesh & mesh)
{
Array<Vec3d> all_colours;
Array<int> faces_sorted;
Array<int> colours_sorted;
// Extract all the colours to see how many there are
GetFaceColours(mesh,all_colours);
// Delete the default colour from the list since it will be accounted
// for automatically
for(int i = 1; i <= all_colours.Size(); i++)
{
if(ColourMatch(all_colours.Elem(i),Vec3d(DEFAULT_R,DEFAULT_G,DEFAULT_B)))
{
all_colours.DeleteElement(i);
break;
}
}
PrintMessage(3,"\nNumber of colours defined in Mesh: ", all_colours.Size());
if(all_colours.Size() == 0)
{
PrintMessage(3,"No colour data detected in Mesh... no changes made!");
return;
}
// One more slot than the number of colours are required, to
// account for individual faces which have no colour data
// assigned to them in the CAD software
faces_sorted.SetSize(all_colours.Size()+1);
colours_sorted.SetSize(all_colours.Size()+1);
faces_sorted = 0;
// Slave Array to identify the colours the faces were assigned to,
// after the bubble sort routine to sort the automatic boundary
// identifiers according to the number of surface mesh elements
// of a given colour
for(int i = 0; i <= all_colours.Size(); i++) colours_sorted[i] = i;
// Used to hold the number of surface elements without any OCC
// colour definition
int no_colour_faces = 0;
// Index in the faces array assigned to faces without any
// or the default colour definition
int no_colour_index = 0;
int nfd = mesh.GetNFD();
// Extract the number of surface elements having a given colour
// And save this number into an array for later sorting
for(int face_index = 1; face_index <= nfd; face_index++)
{
Array<SurfaceElementIndex> se_face;
mesh.GetSurfaceElementsOfFace(face_index, se_face);
Vec3d face_colour;
face_colour = mesh.GetFaceDescriptor(face_index).SurfColour();
if((face_colour.Length2()) && (!ColourMatch(face_colour,Vec3d(DEFAULT_R,DEFAULT_G,DEFAULT_B))))
{
for(int i = 1; i <= all_colours.Size(); i++)
{
if(ColourMatch(face_colour, all_colours.Elem(i)))
{
faces_sorted[i] = faces_sorted[i] + se_face.Size();
}
}
}
else
{
// Add the number of surface elements without any colour
// definition separately
no_colour_faces = no_colour_faces + se_face.Size();
}
}
// Sort the face colour indices according to the number of surface
// mesh elements which have a specific colour
BubbleSort(faces_sorted,colours_sorted);
// Now update the array position assigned for surface elements
// without any colour definition with the number of elements
faces_sorted[no_colour_index] = no_colour_faces;
// Now actually assign the BC Property to the respective faces
for(int face_index = 1; face_index <= nfd; face_index++)
{
Vec3d face_colour;
face_colour = mesh.GetFaceDescriptor(face_index).SurfColour();
if((face_colour.Length2()) && (!ColourMatch(face_colour,Vec3d(DEFAULT_R,DEFAULT_G,DEFAULT_B))))
{
for(int i = 0; i < colours_sorted.Size(); i++)
{
Vec3d ref_colour;
if(i != no_colour_index) ref_colour = all_colours.Elem(colours_sorted[i]);
if(ColourMatch(face_colour, ref_colour))
{
mesh.GetFaceDescriptor(face_index).SetBCProperty(i);
}
}
}
else
{
mesh.GetFaceDescriptor(face_index).SetBCProperty(DEFAULT_BCNUM);
}
PrintMessage(4,"Face number: ",face_index," ; BC Property = ",mesh.GetFaceDescriptor(face_index).BCProperty());
}
// User Information of the results of the operation
PrintMessage(3,"Colour based Boundary Condition Property details:");
for(int i = 0; i < faces_sorted.Size(); i++)
{
Vec3d ref_colour(0.0,1.0,0.0);
if(colours_sorted[i] > 0) ref_colour = all_colours.Elem(colours_sorted[i]);
PrintMessage(3, "BC Property: ",i);
PrintMessage(3, " Nr. of Surface Elements = ", faces_sorted[i]);
PrintMessage(3, " Colour Index = ", colours_sorted[i]);
PrintMessage(3, " RGB Face Colour = ",ref_colour,"","\n");
}
}
//void OCCAutoColourBcProps(Mesh & mesh, OCCGeometry & occgeometry, const char * bccolourfile)
void AutoColourBcProps(Mesh & mesh, const char * bccolourfile)
{
// Go directly to the alternate algorithm if no colour profile file was specified
if(!bccolourfile)
{
AutoColourAlg_Sorted(mesh);
}
ifstream ocf(bccolourfile);
// If there was an error opening the Colour profile file, jump to the alternate
// algorithm after printing a message
if(!ocf)
{
PrintMessage(1,"AutoColourBcProps: Error loading Boundary Colour Profile file ",
bccolourfile, " ....","Switching to alternate algorithm!");
AutoColourAlg_Sorted(mesh);
}
// If the file opens successfully, call the function which assigns boundary conditions
// based on the colour profile file
else
{
AutoColourAlg_UserProfile(mesh, ocf);
}
}
}

49
libsrc/meshing/bcfunctions.hpp Normal file
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@ -0,0 +1,49 @@
#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

4
libsrc/occ/Makefile.am
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@ -1,4 +1,4 @@
noinst_HEADERS = occauxfunctions.hpp occgeom.hpp occmeshsurf.hpp \
noinst_HEADERS = occgeom.hpp occmeshsurf.hpp \
Partition_Inter2d.hxx Partition_Loop2d.hxx Partition_Loop.hxx \
Partition_Inter3d.hxx Partition_Loop3d.hxx Partition_Spliter.hxx \
Partition_Inter2d.ixx Partition_Loop2d.ixx Partition_Loop.ixx \
@ -18,4 +18,4 @@ noinst_LTLIBRARIES = libocc.la
libocc_la_SOURCES = Partition_Inter2d.cxx Partition_Inter3d.cxx \
Partition_Loop.cxx Partition_Loop2d.cxx Partition_Loop3d.cxx Partition_Spliter.cxx \
occconstruction.cpp occgenmesh.cpp occgeom.cpp occmeshsurf.cpp occauxfunctions.cpp
occconstruction.cpp occgenmesh.cpp occgeom.cpp occmeshsurf.cpp

304
libsrc/occ/occauxfunctions.cpp
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@ -1,304 +0,0 @@
#ifdef OCCGEOMETRY
#include <mystdlib.h>
#include <meshing.hpp>
#include <occgeom.hpp>
namespace netgen
{
void OCCAutoColourAlg_UserProfile(Mesh & mesh, OCCGeometry & occgeometry, ifstream & ocf)
{
int numentries = 0;
ocf >> numentries;
if(numentries > 0)
{
if(!ocf.good())
{
throw NgException("OCCAutoColourAlg_UserProfile: Invalid or empty Boundary Colour Profile file\n");
return;
}
PrintMessage(3, "Number of colour entries: ", numentries);
}
else
{
PrintMessage(3, "OCCAutoColourAlg_UserProfile: No Boundary Colour entries found.... no changes made!");
ocf.close();
return;
}
Array<Vec3d> bc_colours(numentries);
Array<int> bc_num(numentries);
for(int i = 1; i <= numentries; i++)
{
int bcnum;
double col_red, col_green, col_blue;
ocf >> bcnum;
if(bcnum < 1) bcnum = 1;
bc_num.Elem(i) = bcnum;
ocf >> bc_colours.Elem(i).X()
>> bc_colours.Elem(i).Y()
>> bc_colours.Elem(i).Z();
if(!ocf.good())
throw NgException("Boundary Colour file error: Number of entries do not match specified list size!!\n");
if(bc_colours.Elem(bcnum).X() < 0.0) bc_colours.Elem(bcnum).X() = 0.0;
if(bc_colours.Elem(bcnum).X() > 1.0) bc_colours.Elem(bcnum).X() = 1.0;
if(bc_colours.Elem(bcnum).Y() < 0.0) bc_colours.Elem(bcnum).X() = 0.0;
if(bc_colours.Elem(bcnum).Y() > 1.0) bc_colours.Elem(bcnum).X() = 1.0;
if(bc_colours.Elem(bcnum).Z() < 0.0) bc_colours.Elem(bcnum).X() = 0.0;
if(bc_colours.Elem(bcnum).Z() > 1.0) bc_colours.Elem(bcnum).X() = 1.0;
}
PrintMessage(3, "Successfully loaded Boundary Colour Profile file....");
ocf.close();
// Find the highest boundary condition number in the list
// All colours in the geometry which are not specified in the
// list will be given boundary condition numbers higher than this
// number
int max_bcnum = 0;
for(int i = 1; i <= bc_num.Size();i++)
{
if(bc_num.Elem(i) > max_bcnum) max_bcnum = bc_num.Elem(i);
}
PrintMessage(3, "Highest boundary number in list = ",max_bcnum);
TDF_LabelSequence all_colours;
// Extract all the colours to see how many there are
occgeometry.face_colours->GetColors(all_colours);
PrintMessage(3,"\nNumber of colours defined in OCC Mesh: ", all_colours.Length());
if(all_colours.Length() == 0)
{
PrintMessage(3,"No colour data detected in OCC Mesh... no changes made!");
return;
}
int nfd = mesh.GetNFD();
for(int face_index = 1; face_index <= nfd; face_index++)
{
// Note: From the logic in file "occgenmesh.cpp", function "FindEdges"
// the Face Descriptor Number of an OCC face has a one-to-one mapping
// to the face number in the OCC face map (fmap)
TopoDS_Face face = TopoDS::Face(occgeometry.fmap(face_index));
Quantity_Color face_colour;
if(occgeometry.face_colours->GetColor(face,XCAFDoc_ColorSurf,face_colour))
{
// Boolean variable to check if the boundary condition was applied
// or not... not applied would imply that the colour of the face
// does not exist in the list of colours in the profile file
bool bc_assigned = false;
for(int col_index = 1; col_index <= bc_colours.Size(); col_index++)
{
Quantity_Color bc_colour;
double col_red = bc_colours.Elem(col_index).X();
double col_green = bc_colours.Elem(col_index).Y();
double col_blue = bc_colours.Elem(col_index).Z();
bc_colour.SetValues(col_red,col_green,col_blue,Quantity_TOC_RGB);
if((face_colour == bc_colour) && (!bc_assigned))
{
mesh.GetFaceDescriptor(face_index).SetBCProperty(bc_num.Elem(col_index));
bc_assigned = true;
break;
}
}
// If the colour was not found in the list, add it to the list, and assign
// the next free boundary condition number to it
if(!bc_assigned)
{
double col_red = face_colour.Red();
double col_green = face_colour.Green();
double col_blue = face_colour.Blue();
Vec3d new_colour(col_red,col_green,col_blue);
max_bcnum++;
bc_num.Append(max_bcnum);
bc_colours.Append(new_colour);
mesh.GetFaceDescriptor(face_index).SetBCProperty(max_bcnum);
}
}
else
{
mesh.GetFaceDescriptor(face_index).SetBCProperty(0);
}
}
}
void OCCAutoColourAlg_Sorted(Mesh & mesh, OCCGeometry & occgeometry)
{
TDF_LabelSequence all_colours;
Array<int> faces_sorted;
Array<int> colours_sorted;
// Extract all the colours to see how many there are
occgeometry.face_colours->GetColors(all_colours);
PrintMessage(3,"\nNumber of colours defined in OCC Mesh: ", all_colours.Length());
if(all_colours.Length() == 0)
{
PrintMessage(3,"No colour data detected in OCC Mesh... no changes made!");
return;
}
// One more slot than the number of colours are required, to
// account for individual faces which have no colour data
// assigned to them in the CAD software
faces_sorted.SetSize(all_colours.Length()+1);
colours_sorted.SetSize(all_colours.Length()+1);
faces_sorted = 0;
// Slave Array to identify the colours the faces were assigned to,
// after the bubble sort routine to sort the automatic boundary
// identifiers according to the number of surface mesh elements
// of a given colour
for(int i = 0; i <= all_colours.Length(); i++) colours_sorted[i] = i;
// Used to hold the number of surface elements without any OCC
// colour definition
int no_colour_faces = 0;
// Index in the faces array assigned to faces without an
// OCC Colour definition
int no_colour_index = 0;
int nfd = mesh.GetNFD();
// Extract the number of surface elements having a given OCC colour
// And save this number into an array for later sorting
for(int face_index = 1; face_index <= nfd; face_index++)
{
Array<SurfaceElementIndex> se_face;
mesh.GetSurfaceElementsOfFace(face_index, se_face);
// Note: From the logic in file "occgenmesh.cpp", function "FindEdges"
// the Face Descriptor Number of an OCC face has a one-to-one mapping
// to the face number in the OCC face map (fmap)
TopoDS_Face face = TopoDS::Face(occgeometry.fmap(face_index));
Quantity_Color face_colour;
if(occgeometry.face_colours->GetColor(face,XCAFDoc_ColorSurf,face_colour))
{
for(int i = 1; i <= all_colours.Length(); i++)
{
Quantity_Color ref_colour;
occgeometry.face_colours->GetColor(all_colours.Value(i),ref_colour);
if(face_colour == ref_colour)
{
faces_sorted[i] = faces_sorted[i] + se_face.Size();
}
}
}
else
{
// Add the number of surface elements without any colour
// definition separately
no_colour_faces = no_colour_faces + se_face.Size();
}
}
// Sort the face colour indices according to the number of surface
// mesh elements which have a specific colour
BubbleSort(faces_sorted,colours_sorted);
// Now update the array position assigned for surface elements
// without any colour definition with the number of elements
faces_sorted[no_colour_index] = no_colour_faces;
// Now actually assign the BC Property to the respective faces
for(int face_index = 1; face_index <= nfd; face_index++)
{
TopoDS_Face face = TopoDS::Face(occgeometry.fmap(face_index));
Quantity_Color face_colour;
if(occgeometry.face_colours->GetColor(face,XCAFDoc_ColorSurf,face_colour))
{
for(int i = 0; i < colours_sorted.Size(); i++)
{
Quantity_Color ref_colour;
if(i != no_colour_index)
occgeometry.face_colours->GetColor(all_colours.Value(colours_sorted[i]),ref_colour);
if(face_colour == ref_colour)
{
mesh.GetFaceDescriptor(face_index).SetBCProperty(i);
}
}
}
else
{
mesh.GetFaceDescriptor(face_index).SetBCProperty(no_colour_index);
}
PrintMessage(4,"Face number: ",face_index," ; BC Property = ",mesh.GetFaceDescriptor(face_index).BCProperty());
}
// User Information of the results of the operation
PrintMessage(3,"OCC Colour based Boundary Condition Property details:");
for(int i = 0; i < faces_sorted.Size(); i++)
{
Quantity_Color ref_colour;
ref_colour.SetValues(1.0,1.0,0.0,Quantity_TOC_RGB);
if(colours_sorted[i] > 0) occgeometry.face_colours->GetColor(all_colours.Value(colours_sorted[i]),ref_colour);
PrintMessage(3, "BC Property: ",i);
PrintMessage(3, " Nr. of Surface Elements = ", faces_sorted[i]);
PrintMessage(3, " OCC Colour Index = ", colours_sorted[i]);
PrintMessage(3, " RGB Face Colour = (",ref_colour.Red(),","
,ref_colour.Green(),","
,ref_colour.Blue(),")","\n");
}
}
void OCCAutoColourBcProps(Mesh & mesh, OCCGeometry & occgeometry, const char * occcolourfile)
{
// Go directly to the alternate algorithm if no colour profile file was specified
if(!occcolourfile)
{
OCCAutoColourAlg_Sorted(mesh,occgeometry);
}
ifstream ocf(occcolourfile);
// If there was an error opening the Colour profile file, jump to the alternate
// algorithm after printing a message
if(!ocf)
{
PrintMessage(1,"OCCAutoColourBcProps: Error loading Boundary Colour Profile file ",
occcolourfile, " ....","Switching to alternate algorithm!");
OCCAutoColourAlg_Sorted(mesh,occgeometry);
}
// If the file opens successfully, call the function which assigns boundary conditions
// based on the colour profile file
else
{
OCCAutoColourAlg_UserProfile(mesh,occgeometry,ocf);
}
}
}
#endif // #ifdef OCCGEOMETRY

46
libsrc/occ/occauxfunctions.hpp
View File

@ -1,46 +0,0 @@
#ifndef FILE_OCCAUXFUNCTIONS
#define FILE_OCCAUXFUNCTIONS
// 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 OCC meshes
This function allows the boundary condition numbers of a
mesh created using an OpenCascade (STEP / IGES) geometry
to be assigned automatically.
The boundary conditions are assigned based on the face
colour information (if any) contained in the geometry.
Currently the following process is used to assign the BC Properties:
- Extract all the colours present in the OCC Geometry
- 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 file 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);
}
#endif

52
windows/netgen.vcproj
View File

@ -408,6 +408,10 @@
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58
windows/netgen_MSVC2005.vcproj
View File

@ -68,7 +68,6 @@
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@ -157,7 +156,6 @@
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