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/*! \file trimesh_normal.cpp
\ingroup code_sample

\brief An example of all the methods for computing normals over a mesh.

*/
#include<vcg/complex/complex.h>

#include<wrap/io_trimesh/import.h>
#include<wrap/io_trimesh/export.h>

#include<vcg/complex/algorithms/clean.h>
#include<vcg/complex/algorithms/isotropic_remeshing.h>

using namespace vcg;
using namespace std;

class MyEdge;
class MyFace;
class MyVertex;
struct MyUsedTypes : public UsedTypes<	Use<MyVertex>   ::AsVertexType,
                                        Use<MyEdge>     ::AsEdgeType,
                                        Use<MyFace>     ::AsFaceType>{};

class MyVertex  : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::VFAdj, vertex::Qualityf, vertex::BitFlags  >{};
class MyFace    : public Face< MyUsedTypes, face::Mark,  face::VertexRef, face::VFAdj, face::FFAdj, face::Normal3f, face::BitFlags > {};
class MyEdge    : public Edge<MyUsedTypes>{};
class MyMesh    : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge>  > {};

int main( int argc, char **argv )
{
  MyMesh original,toremesh;
  if(argc<2)
  {
    printf("Usage: trimesh_remesh <filename> [targetLen [iterNum] ]");
    exit(0);
  }

  if(tri::io::Importer<MyMesh>::Open(original,argv[1])!=0)
  {
    printf("Error reading file  %s\n",argv[1]);
    exit(0);
  }
  float targetLenPerc=.2f;
  int iterNum=20;
  if(argc>=3) targetLenPerc = atof(argv[2]);
  if(argc>=4) iterNum = atoi(argv[3]);
  
  // Mesh cleaning
  tri::Clean<MyMesh>::RemoveDuplicateVertex(original);
  tri::Clean<MyMesh>::RemoveUnreferencedVertex(original);
  Allocator<MyMesh>::CompactEveryVector(original);
  tri::UpdateNormal<MyMesh>::PerVertexNormalizedPerFaceNormalized(original);
  tri::UpdateBounding<MyMesh>::Box(original);
  
  vcg::tri::Append<MyMesh,MyMesh>::MeshCopy(toremesh,original);
  tri::UpdateNormal<MyMesh>::PerVertexNormalizedPerFaceNormalized(toremesh);
  tri::UpdateBounding<MyMesh>::Box(toremesh);
  
  tri::UpdateTopology<MyMesh>::FaceFace(toremesh);
  tri::MeshAssert<MyMesh>::FFTwoManifoldEdge(toremesh);
  float lengthThr = targetLenPerc*(original.bbox.Diag()/100.f);
  printf("Length Thr: %8.3f ~ %4.2f %% on %5.3f\n",lengthThr,targetLenPerc,original.bbox.Diag());
  
  IsotropicRemeshing<MyMesh>::Params params;
  params.SetTargetLen(lengthThr);
  params.SetFeatureAngleDeg(10);
  params.iter=iterNum;
  printf(" Input mesh %8i v %8i f\n",toremesh.VN(),toremesh.FN());
  IsotropicRemeshing<MyMesh>::Do(toremesh, original, params);
  vcg::tri::io::ExporterPLY<MyMesh>::Save(toremesh, "remesh.ply"); 
  printf("Output mesh %8i v %8i f\n",toremesh.VN(),toremesh.FN());
 
  return 0;
}