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Added the feature aware poisson disk sampling example

This commit is contained in:
Paolo Cignoni 2013-07-01 14:09:40 +00:00
parent 4c7522d4a8
commit de332065d1
1 changed files with 63 additions and 4 deletions
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67
apps/sample/trimesh_sampling/trimesh_sampling.cpp
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@ -23,8 +23,10 @@
#include<vcg/complex/complex.h> #include<vcg/complex/complex.h>
#include<wrap/io_trimesh/import_off.h> #include<wrap/io_trimesh/import_off.h>
#include<wrap/io_trimesh/export_off.h>
#include<vcg/complex/algorithms/point_sampling.h> #include<vcg/complex/algorithms/point_sampling.h>
#include<vcg/complex/algorithms/create/platonic.h>
using namespace vcg; using namespace vcg;
using namespace std; using namespace std;
@ -37,7 +39,7 @@ struct MyUsedTypes : public UsedTypes< Use<MyVertex> ::AsVertexType,
Use<MyFace> ::AsFaceType>{}; Use<MyFace> ::AsFaceType>{};
class MyVertex : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags >{}; class MyVertex : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags >{};
class MyFace : public Face< MyUsedTypes, face::FFAdj, face::VertexRef, face::BitFlags > {}; class MyFace : public Face< MyUsedTypes, face::FFAdj, face::Normal3f, face::VertexRef, face::BitFlags > {};
class MyEdge : public Edge<MyUsedTypes>{}; class MyEdge : public Edge<MyUsedTypes>{};
class MyMesh : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge> > {}; class MyMesh : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge> > {};
@ -45,7 +47,7 @@ int main( int argc, char **argv )
{ {
if(argc<2) if(argc<2)
{ {
printf("Usage trimesh_base <meshfilename.obj>\n"); printf("Usage trimesh_base <meshfilename.obj> radius\n");
return -1; return -1;
} }
@ -56,9 +58,66 @@ int main( int argc, char **argv )
printf("Error reading file %s\n",argv[1]); printf("Error reading file %s\n",argv[1]);
exit(0); exit(0);
} }
tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::SamplingRandomGenerator().initialize(time(0));
//----------------------------------------------------------------------
// Basic Sample,
// Build a point cloud with points with a plain poisson disk distribution
int t0=clock();
vector<Point3f> pointVec; vector<Point3f> pointVec;
float radius; float rad;
tri::PoissonSampling<MyMesh>(m,pointVec,1000,radius); if(argc>2) rad=atof(argv[2]);
int sampleNum=rad?0:1000;
tri::PoissonSampling<MyMesh>(m,pointVec,sampleNum,rad);
int t1=clock();
MyMesh BasicPoissonMesh;
tri::Build(BasicPoissonMesh,pointVec);
tri::io::ExporterOFF<MyMesh>::Save(BasicPoissonMesh,"BasicPoissonMesh.off");
printf("Computed a basic poisson disk distribution of %i vertices radius is %6.3f in %5.2f sec\n",BasicPoissonMesh.VN(),rad,float(t1-t0)/CLOCKS_PER_SEC);
//----------------------------------------------------------------------
// Advanced Sample
// Make a feature dependent Poisson Disk sampling
MyMesh MontecarloSurfaceMesh;
MyMesh MontecarloEdgeMesh;
MyMesh PoissonEdgeMesh;
MyMesh PoissonMesh;
std::vector<Point3f> sampleVec;
tri::TrivialSampler<MyMesh> mps(sampleVec);
tri::UpdateTopology<MyMesh>::FaceFace(m);
tri::UpdateNormal<MyMesh>::PerFace(m);
tri::UpdateFlags<MyMesh>::FaceFauxCrease(m,math::ToRad(40.0f));
tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::EdgeMontecarlo(m,mps,10000,false);
tri::Build(MontecarloEdgeMesh,sampleVec);
tri::io::ExporterOFF<MyMesh>::Save(MontecarloEdgeMesh,"MontecarloEdgeMesh.off");
sampleVec.clear();
tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::VertexCrease(m, mps);
tri::Build(PoissonEdgeMesh,sampleVec);
tri::io::ExporterOFF<MyMesh>::Save(PoissonEdgeMesh,"CreaseMesh.off");
tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::PoissonDiskParam pp;
pp.preGenMesh = &PoissonEdgeMesh;
pp.preGenFlag=true;
sampleVec.clear();
tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::PoissonDiskPruning(mps, MontecarloEdgeMesh, rad, pp);
tri::Build(PoissonEdgeMesh,sampleVec);
tri::io::ExporterOFF<MyMesh>::Save(PoissonEdgeMesh,"PoissonEdgeMesh.off");
sampleVec.clear();
tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::Montecarlo(m,mps,50000);
tri::Build(MontecarloSurfaceMesh,sampleVec);
tri::io::ExporterOFF<MyMesh>::Save(MontecarloSurfaceMesh,"MontecarloSurfaceMesh.off");
pp.preGenMesh = &PoissonEdgeMesh;
pp.preGenFlag=true;
sampleVec.clear();
tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::PoissonDiskPruning(mps, MontecarloSurfaceMesh, rad, pp);
tri::Build(PoissonMesh,sampleVec);
tri::io::ExporterOFF<MyMesh>::Save(PoissonMesh,"PoissonMesh.off");
printf("Computed a feature aware poisson disk distribution of %i vertices radius is %6.3f\n",PoissonMesh.VN(),rad);
return 0; return 0;
} }