openMVS/vcglib/apps/sample/trimesh_select/trimesh_select.cpp

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* VCGLib                                                            o o     *
* Visual and Computer Graphics Library                            o     o   *
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* Copyright(C) 2004-2016                                           \/)\/    *
* Visual Computing Lab                                            /\/|      *
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* for more details.                                                         *
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/*! \file trimesh_select.cpp
\ingroup code_sample

\brief the minimal example of using the selection functionality
*/

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

using namespace vcg;
using namespace std;


class MyFace;
class MyVertex;

struct MyUsedTypes : public UsedTypes<	Use<MyVertex>::AsVertexType, Use<MyFace>::AsFaceType>{};
class MyVertex  : public Vertex< MyUsedTypes, vertex::VFAdj, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags  >{};
class MyFace    : public Face  < MyUsedTypes, face::VFAdj, face::Normal3f, face::VertexRef, face::BitFlags > {};
class MyMesh    : public vcg::tri::TriMesh<vector<MyVertex>, vector<MyFace> > {};

int main(int ,char ** )
{
  MyMesh m; 
  // build a 10x10 grid of 100 vertices and 200 faces. 
  tri::Grid(m,10,10,1.0f,1.0f);
  tri::UpdateFlags<MyMesh>::VertexBorderFromNone(m);
  int cornerNum = tri::UpdateSelection<MyMesh>::VertexCornerBorder(m,math::ToRad(100.0f));
  printf("Mesh has %i vertexes  %i faces and %i corners\n",m.VN(),m.FN(),cornerNum);
  
  int borderNum = tri::UpdateSelection<MyMesh>::VertexFromBorderFlag(m);
  int internalNum = tri::UpdateSelection<MyMesh>::VertexInvert(m);
  int faceNotOnBoundaryNum = tri::UpdateSelection<MyMesh>::FaceFromVertexStrict(m);
  printf("%i vertexes are on the boundary and %i internal and internal faces are %i \n",borderNum,internalNum,faceNotOnBoundaryNum);
  int innerFacesNum = tri::UpdateSelection<MyMesh>::FaceErode(m);
  printf("Eroding the face selection of on ring of faces bring it to %i faces\n",innerFacesNum);
  
  
  return 0;
}