125 lines
5.7 KiB
C++
125 lines
5.7 KiB
C++
/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004-2016 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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#include<vcg/complex/complex.h>
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#include<wrap/io_trimesh/import_off.h>
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#include<wrap/io_trimesh/export_off.h>
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#include<vcg/complex/algorithms/point_sampling.h>
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#include<vcg/complex/algorithms/create/platonic.h>
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using namespace vcg;
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using namespace std;
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class MyEdge;
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class MyFace;
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class MyVertex;
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struct MyUsedTypes : public UsedTypes< Use<MyVertex> ::AsVertexType,
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Use<MyEdge> ::AsEdgeType,
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Use<MyFace> ::AsFaceType>{};
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class MyVertex : public Vertex<MyUsedTypes, vertex::Coord3f, vertex::Normal3f, vertex::BitFlags >{};
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class MyFace : public Face< MyUsedTypes, face::FFAdj, face::Normal3f, face::VertexRef, face::BitFlags > {};
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class MyEdge : public Edge<MyUsedTypes>{};
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class MyMesh : public tri::TriMesh< vector<MyVertex>, vector<MyFace> , vector<MyEdge> > {};
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int main( int argc, char **argv )
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{
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if(argc<2)
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{
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printf("Usage trimesh_base <meshfilename.obj> radius\n");
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return -1;
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}
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MyMesh m;
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if(tri::io::ImporterOFF<MyMesh>::Open(m,argv[1])!=0)
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{
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printf("Error reading file %s\n",argv[1]);
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exit(0);
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}
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tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::SamplingRandomGenerator().initialize(time(0));
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//----------------------------------------------------------------------
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// Basic Sample of a mesh surface
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// Build a point cloud with points with a plain poisson disk distribution
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int t0=clock();
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vector<Point3f> pointVec;
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float rad=0;
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if(argc>2) rad=atof(argv[2]);
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int sampleNum=rad?0:1000;
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tri::PoissonSampling<MyMesh>(m,pointVec,sampleNum,rad);
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int t1=clock();
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MyMesh BasicPoissonMesh;
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tri::BuildMeshFromCoordVector(BasicPoissonMesh,pointVec);
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tri::io::ExporterOFF<MyMesh>::Save(BasicPoissonMesh,"BasicPoissonMesh.off");
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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);
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//----------------------------------------------------------------------
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// Advanced Sample
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// Make a feature dependent Poisson Disk sampling
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MyMesh MontecarloSurfaceMesh;
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MyMesh MontecarloEdgeMesh;
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MyMesh PoissonEdgeMesh;
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MyMesh PoissonMesh;
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std::vector<Point3f> sampleVec;
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tri::TrivialSampler<MyMesh> mps(sampleVec);
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tri::UpdateTopology<MyMesh>::FaceFace(m);
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tri::UpdateNormal<MyMesh>::PerFace(m);
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tri::UpdateFlags<MyMesh>::FaceEdgeSelCrease(m,math::ToRad(40.0f));
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tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::EdgeMontecarlo(m,mps,10000,false);
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tri::BuildMeshFromCoordVector(MontecarloEdgeMesh,sampleVec);
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tri::io::ExporterOFF<MyMesh>::Save(MontecarloEdgeMesh,"MontecarloEdgeMesh.off");
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sampleVec.clear();
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tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::VertexCrease(m, mps);
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tri::BuildMeshFromCoordVector(PoissonEdgeMesh,sampleVec);
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tri::io::ExporterOFF<MyMesh>::Save(PoissonEdgeMesh,"VertexCreaseMesh.off");
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tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::PoissonDiskParam pp;
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pp.preGenMesh = &PoissonEdgeMesh;
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pp.preGenFlag=true;
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sampleVec.clear();
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tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::PoissonDiskPruning(mps, MontecarloEdgeMesh, rad, pp);
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tri::BuildMeshFromCoordVector(PoissonEdgeMesh,sampleVec);
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tri::io::ExporterOFF<MyMesh>::Save(PoissonEdgeMesh,"PoissonEdgeMesh.off");
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sampleVec.clear();
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tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::Montecarlo(m,mps,50000);
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tri::BuildMeshFromCoordVector(MontecarloSurfaceMesh,sampleVec);
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tri::io::ExporterOFF<MyMesh>::Save(MontecarloSurfaceMesh,"MontecarloSurfaceMesh.off");
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pp.preGenMesh = &PoissonEdgeMesh;
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pp.preGenFlag=true;
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sampleVec.clear();
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tri::SurfaceSampling<MyMesh,tri::TrivialSampler<MyMesh> >::PoissonDiskPruning(mps, MontecarloSurfaceMesh, rad, pp);
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tri::BuildMeshFromCoordVector(PoissonMesh,sampleVec);
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tri::io::ExporterOFF<MyMesh>::Save(PoissonMesh,"PoissonMesh.off");
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printf("Computed a feature aware poisson disk distribution of %i vertices radius is %6.3f\n",PoissonMesh.VN(),rad);
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return 0;
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}
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