VCG Library
trimesh_montecarlo_sampling.cpp
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23 #include<vcg/complex/complex.h>
24 
25 #include<wrap/io_trimesh/import_off.h>
26 #include<wrap/io_trimesh/export_off.h>
27 
28 #include<vcg/complex/algorithms/point_sampling.h>
29 #include<vcg/complex/algorithms/create/platonic.h>
30 
31 using namespace vcg;
32 using namespace std;
33 
34 class MyEdge;
35 class MyFace;
36 class MyVertex;
37 struct MyUsedTypes : public UsedTypes< Use<MyVertex> ::AsVertexType,
38  Use<MyEdge> ::AsEdgeType,
39  Use<MyFace> ::AsFaceType>{};
40 
41 class MyVertex : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags >{};
42 class MyFace : public Face< MyUsedTypes, face::FFAdj, face::Normal3f, face::VertexRef, face::BitFlags > {};
43 class MyEdge : public Edge<MyUsedTypes>{};
44 class MyMesh : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge> > {};
45 
46 int main( int argc, char **argv )
47 {
48  if(argc<2)
49  {
50  printf("Usage trimesh_base <meshfilename.obj> radius\n");
51  return -1;
52  }
53 
54  MyMesh m;
55 
56  if(tri::io::ImporterOFF<MyMesh>::Open(m,argv[1])!=0)
57  {
58  printf("Error reading file %s\n",argv[1]);
59  exit(0);
60  }
61  tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::SamplingRandomGenerator().initialize(time(0));
62 
63  //----------------------------------------------------------------------
64  // Advanced Sample
65  // Make a feature dependent Poisson Disk sampling
66  MyMesh MontecarloSurfaceMesh;
67 
68  std::vector<Point3f> sampleVec;
69  tri::TrivialSampler<MyMesh> mps(sampleVec);
70  int t0=clock();
71  tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::Montecarlo(m,mps,10000000);
72  int t1=clock();
73 
74  printf("Computed a montecarlo distribution of %lu vertices radius is %6.3f\n",sampleVec.size(),float(t1-t0)/float(CLOCKS_PER_SEC));
75 
76  return 0;
77 }