Libs/Mesh/PreviewMeshQC/FEMesh.h

Classes

	Name
class	FEElementData
class	FEMesh

Functions

	Name
double	bias(double b, double x)
double	gain(double g, double x)
double	area_triangle(vec3d r[3])

Attributes

	Name
int	FTHEX8
int	FTHEX20
int	FTHEX27
int	FTPENTA
int	FTTET
int	FTTET10
int	FTTET15

Functions Documentation

function bias

double bias(
    double b,
    double x
)

function gain

double gain(
    double g,
    double x
)

function area_triangle

double area_triangle(
    vec3d r[3]
)

Attributes Documentation

variable FTHEX8

int FTHEX8;

variable FTHEX20

int FTHEX20;

variable FTHEX27

int FTHEX27;

variable FTPENTA

int FTPENTA;

variable FTTET

int FTTET;

variable FTTET10

int FTTET10;

variable FTTET15

int FTTET15;

Source code

// FEMesh.h: interface for the FEMesh class.
//

#if !defined(AFX_FEMESH_H__CB7EC714_E3FD_46A4_A397_FEFB23429520__INCLUDED_)
#define AFX_FEMESH_H__CB7EC714_E3FD_46A4_A397_FEFB23429520__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "FECoreMesh.h"
#include <vector>
#include <set>
using namespace std;

//-----------------------------------------------------------------------------
class FEMesh;

//-----------------------------------------------------------------------------
// Element data field
class FEElementData
{
public:
    FEElementData();
    FEElementData(const FEElementData& d);
    FEElementData& operator = (const FEElementData& d);

    // create a data field
    void Create(FEMesh* pm, double v = 0.0);

    // size of data field
    int Size() { return (int) m_data.size(); }

    // get/set
    double get(int i) { return m_data[i]; }
    void set(int i, double v) { m_data[i] = v; }

    // access operator
    double& operator [] (int i) { return m_data[i]; }

    // get/set name
    void SetName(const char* sz);
    const char* GetName() { return m_szname; }

    void FillRandomBox(double fmin, double fmax);

private:
    char            m_szname[256];  
    FEMesh*         m_pMesh;        
    vector<double>  m_data;         
};

//-----------------------------------------------------------------------------
// This class describes a finite element mesh. Every FEMesh must be owned by a
// GObject class. 
class FEMesh : public FECoreMesh
{
public:
    // --- C O N S T R U C T I O N ---
    FEMesh();
    FEMesh(FEMesh& m);
    virtual ~FEMesh();

    // allocate space for mesh
    void Create(int nodes, int elems, int faces = 0, int edges = 0);

    // copy part of the mesh
    void ShallowCopy(FEMesh* pm);

    void Clear();
    void DeleteEdges() { if (!m_Edge.empty()) m_Edge.clear(); }

public: // --- E L E M E N T   A C C E S S ---

    int Elements() const { return m_Elem.size(); }

    FEElement& Element(int n) { return m_Elem[n]; }

    FEElement_& ElementRef(int n) { return m_Elem[n]; }

    FEElement* ElementPtr(int n=0) { return ((n>=0) && (n<(int)m_Elem.size())? &m_Elem[n] : 0); }

public:
    // --- S U B M E S H ---
    int FindFace(FEElement* pe, FEFace& f, FEFace& fe);

    void FindNodesFromPart(int gid, vector<int>& node);

    std::vector<FENode>&    NodeArray   () { return m_Node; }
    std::vector<FEFace>&    FaceArray   () { return m_Face; }
    std::vector<FEElement>& ElementArray() { return m_Elem; }

    // --- E V A L U A T I O N ---

    // get the current element value
    double GetElementValue(int n) { return m_data[n]; }

    // set the element value
    void SetElementValue(int n, double v) { m_data[n] = v; }

    // update the range of values
    void UpdateValueRange();

    // get the value range
    void GetValueRange(double& vmin, double& vmax);

    vec3d ProjectToSurface(vec3d r, vec3d t);
    vec3d ProjectToFace(vec3d p, FEFace& f, double& r, double& s);
    vec3d ProjectToEdge(vec3d e1, vec3d e2, vec3d p, double& r);

    bool FindIntersection(FEFace& f, vec3d x, vec3d n, vec3d& q, double& g);

    // --- U P D A T E ---
    void Update();
    void UpdateElementNeighbors();
    void UpdateFaces();
    void UpdateEdges();
    void UpdateNodes();
    void AutoSmooth(double w);
    void UpdateNormals();
    void PartitionSelection();

    // --- O P E R A T I O N S ---
    void RemoveIsolatedNodes();

    void AddNode(FENode& n) { m_Node.push_back(n); }

    // detach the selected elements and create a new mesh
    FEMesh* DetachSelectedMesh();

    // detach selected elements and create a new part
    void DetachSelectedPart();

    FEMesh* ExtractSelectedFaces();

    void DeleteTaggedElements(int tag);
    void DeleteTaggedFaces   (int tag);
    void DeleteTaggedEdges   (int tag);

    void FindDuplicateFaces(vector<int>& l);
    void FindDuplicateEdges(vector<int>& l);

    void DeleteSelectedElements();
    void DeleteSelectedFaces();
    void DeleteSelectedNodes();

    void InvertTaggedElements(int ntag);
    void InvertSelectedElements();

    double ShellJacobian(FEElement& el);

    // Remove duplicated elements
    void RemoveDuplicateElements();
    //Fix inverted elements
    void FixinvertedElements();
    //Fix the reference surface
    void FixReferenceSurface();
    //Interpolate shell thickness for elements whose thickness is unknown
    void InterpolateShellThickness(double);
    // Remove non-manifold elements
    void RemoveNonManifoldElements();

    // fix element winding
    void FixElementWinding();
    void FixElementWinding2();

    // tag all elements
    void TagAllElements(int ntag);

public:
    int DataFields() { return (int) m_map.size(); }
    FEElementData* AddDataField(const char* szname, double v = 0.0);
    FEElementData& GetDataField(int i) { return m_map[i]; }

public:
    double ShortestEdge();

protected:
    bool IntersectTri (vec3d* y, vec3d x, vec3d n, vec3d& q, double& g);
    bool IntersectQuad(vec3d* y, vec3d x, vec3d n, vec3d& q, double& g);

public:
    void BuildNodeElementTable(vector< vector<int> >& NET);
    void BuildNodeFaceTable(vector< vector<int> >& NFT);
    void BuildNodeEdgeTable(vector< vector<int> >& NET);
    void BuildEdgeTable(vector< pair<int, int> >& ET);
    void BuildNodeNodeTable(vector< set<int> >& NNT);
    void BuildSurfaceNodeNodeTable(vector< set<int> >& NNT);
    void BuildElementEdgeTable(vector< vector<int> >& EET, vector< pair<int, int> >& ET);
    void BuildFaceTable(vector<FEFace>& FT);
    void BuildElementFaceTable(vector< vector<int> >& EFT, vector<FEFace>& FT);
    void BuildFaceEdgeTable(vector< vector<int> >& FET, vector< pair<int, int> >& ET);
    void BuildFaceFaceTable(vector<int>& FFT, vector<FEFace>& FT);
    void BuildEdgeEdgeTable(vector<int>& EET, vector< pair<int,int> >& ET);

protected:
    // element data
    std::vector<FEElement>  m_Elem; 
    std::vector<double>     m_data; 
    double  m_min, m_max;       

    // data fields (currently used as material maps)
    vector<FEElementData>   m_map;
};

extern int FTHEX8[6][4];
extern int FTHEX20[6][8];
extern int FTHEX27[6][9];
extern int FTPENTA[5][4];
extern int FTTET[4][3];
extern int FTTET10[4][6];
extern int FTTET15[4][7];

double bias(double b, double x);
double gain(double g, double x);

double area_triangle(vec3d r[3]);

#endif // !defined(AFX_FEMESH_H__CB7EC714_E3FD_46A4_A397_FEFB23429520__INCLUDED_)

---

Updated on 2022-07-23 at 16:40:07 -0600