Libs/Mesh/PreviewMeshQC/FECVDDecimationModifier.h

Classes

	Name
class	FECVDDecimationModifier

Source code

#pragma once
#include "math3d.h"
#include "FEMesh.h"
#include <list>
using namespace std;

//-----------------------------------------------------------------------------
class FECVDDecimationModifier
{
private:
    class Cluster
    {
    public:
        Cluster() : m_sgamma(vec3d(0,0,0)), m_srho(0.0) {}

        int faces() const { return (int) m_fid.size(); }

    public:
        vec3d   m_sgamma;   // sum of "gamma's"
        double  m_srho;     // sum of "rho's"
        vector<int> m_fid; //face ids of the faces in this cluster

    };

    struct EDGE
    {
        int face[2];    // the indices of the two faces sharing this edge
        int node[2];    // the nodes of the edge
    };

    // a node which contains a list of clusters it belongs to
    class NODE
    {
    public:
        enum {MAX_CLUSTERS=23};
    public:
        NODE() : nc(0){}

        bool AttachToCluster(int n);
    public:
        int c[MAX_CLUSTERS];    // cluster ID's
        int nc;                 // nr of clusters
    };

public:
    FECVDDecimationModifier();

    FEMesh* Apply(FEMesh* pm);

private:
    bool Initialize(FEMesh* pm);

    bool Minimize(FEMesh* pm);

    FEMesh* Triangulate(FEMesh* pm);
    FEMesh* Triangulate2(FEMesh* pm);   // uses hole-filling algorithm

    FEMesh* CalculateCVD(FEMesh* pm);
    void InterpolateShellThickness(FEMesh* pm); // to interpolate shell thickness

    bool Swap(FEFace& face, int nface, int ncluster);

public:
    double  m_pct;  
    bool    m_bcvd;
    double  m_sel_pct; // percentage of clusters in selected region
    double  m_gradient; //gradiant for curvature

private:
    vector<Cluster> m_Cluster;
    vector<int>     m_tag;
    vector<double>  m_rho;      // rho for all triangles
    vector<vec3d>   m_gamma;    // centroids of all triangles
    list<EDGE>      m_Edge;     // edge list
    vector<double> m_st;//each node shell thickness
    //vector<int> hashmap;      //hashmap for selected faces
};

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