trimesh_pos_demo.cpp

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#include <vector>

#include <vcg/simplex/vertex/base.h>   
#include <vcg/simplex/vertex/component.h>   
#include <vcg/simplex/face/base.h>   
#include <vcg/simplex/face/component.h>   

#include <vcg/complex/complex.h>   
#include<vcg/complex/algorithms/create/platonic.h>

#include<vcg/complex/algorithms/update/topology.h>

#include <vcg/simplex/face/pos.h> 

class MyEdge;
class MyFace;

class MyVertex: public vcg::VertexSimp2<MyVertex,MyEdge,MyFace, vcg::vert::Coord3d, vcg::vert::Normal3f>{};
class MyFace: public vcg::FaceSimp2<MyVertex,MyEdge,MyFace, vcg::face::VertexRef,vcg::face::FFAdj>{};

class MyMesh: public vcg::tri::TriMesh< std::vector<MyVertex>, std::vector<MyFace> > {};

void OneRingNeighborhood( MyFace * f)
{
        MyVertex * v = f->V(0);  
        MyFace* start = f;
        vcg::face::Pos<MyFace> p(f,0,v);// constructor that takes face, edge and vertex
        do
        {
                p.FlipF();
                p.FlipE();
        }while(p.f!=start);
}

#include <vcg/simplex/face/jumping_pos.h> // include the definition of jumping pos

void OneRingNeighborhoodJP( MyFace * f)
{
        MyVertex * v = f->V(0);  
        MyFace* start = f;
        vcg::face::JumpingPos<MyFace> p(f,0,v);// constructor that takes face, edge and vertex
        do
        {
                p.NextFE();
        }while(p.f!=start);
}

int main()
{
        MyMesh m;
        vcg::tri::Tetrahedron(m);
        vcg::tri::UpdateTopology<MyVCGMesh>::FaceFace(m);
        OneRingNeighborhood(&(*m.face.begin()));
        OneRingNeighborhoodJP(&(*m.face.begin()));
        return 0;
}