437 lines
16 KiB
C++
437 lines
16 KiB
C++
#include <iostream>
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#include <QTime>
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#include <omp.h>
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#include "nanoflann.hpp"
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#include <vcg/complex/complex.h>
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#include <wrap/io_trimesh/import.h>
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#include <wrap/io_trimesh/export.h>
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#include <vcg/space/index/kdtree/kdtree.h>
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#include <vcg/space/index/grid_static_ptr.h>
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#include <vcg/space/index/perfect_spatial_hashing.h>
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#include <vcg/space/index/spatial_hashing.h>
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#include <vcg/space/index/octree.h>
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int num_test = 1000;
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int kNearest = 256;
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float queryDist = 0.0037;
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float ratio = 1000.0f;
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class CVertex;
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class CFace;
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class CEdge;
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class CUsedTypes : public vcg::UsedTypes < vcg::Use< CVertex >::AsVertexType, vcg::Use< CFace >::AsFaceType>{};
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class CVertex : public vcg::Vertex < CUsedTypes, vcg::vertex::Coord3f, vcg::vertex::Normal3f, vcg::vertex::Radiusf, vcg::vertex::BitFlags, vcg::vertex::Qualityf, vcg::vertex::Color4b>{};
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class CFace : public vcg::Face < CUsedTypes, vcg::face::VertexRef>{};
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class CMesh : public vcg::tri::TriMesh < std::vector< CVertex >, std::vector< CFace > > {};
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template <typename T>
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struct PointCloud
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{
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struct Point
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{
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T x,y,z;
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};
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std::vector<Point> pts;
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inline size_t kdtree_get_point_count() const { return pts.size(); }
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inline T kdtree_distance(const T *p1, const size_t idx_p2,size_t size) const
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{
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const T d0=p1[0]-pts[idx_p2].x;
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const T d1=p1[1]-pts[idx_p2].y;
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const T d2=p1[2]-pts[idx_p2].z;
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return d0*d0+d1*d1+d2*d2;
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}
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inline T kdtree_get_pt(const size_t idx, int dim) const
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{
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if (dim==0) return pts[idx].x;
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else if (dim==1) return pts[idx].y;
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else return pts[idx].z;
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}
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template <class BBOX>
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bool kdtree_get_bbox(BBOX &bb) const { return false; }
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};
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void testKDTree(CMesh& mesh, std::vector<unsigned int>& test_indeces, std::vector<vcg::Point3f>& randomSamples)
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{
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std::cout << "==================================================="<< std::endl;
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std::cout << "KDTree" << std::endl;
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QTime time;
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time.start();
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// Construction of the kdTree
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vcg::ConstDataWrapper<CMesh::VertexType::CoordType> wrapperVcg(&mesh.vert[0].P(), mesh.vert.size(), size_t(mesh.vert[1].P().V()) - size_t(mesh.vert[0].P().V()));
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vcg::KdTree<CMesh::ScalarType> kdTreeVcg(wrapperVcg);
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std::cout << "Build: " << time.elapsed() << " ms" << std::endl;
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// Computation of the point radius
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float mAveragePointSpacing = 0;
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time.restart();
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#pragma omp parallel for reduction(+: mAveragePointSpacing) schedule(dynamic, 10)
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for (int i = 0; i < mesh.vert.size(); i++)
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{
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vcg::KdTree<CMesh::ScalarType>::PriorityQueue queue;
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kdTreeVcg.doQueryK(mesh.vert[i].cP(), 16, queue);
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float newRadius = 2.0f * sqrt(queue.getWeight(0)/ queue.getNofElements());
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mesh.vert[i].R() -= newRadius;
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mAveragePointSpacing += newRadius;
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}
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mAveragePointSpacing /= mesh.vert.size();
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std::cout << "Average point radius (OpenMP) " << mAveragePointSpacing << std::endl;
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std::cout << "Time (OpenMP): " << time.elapsed() << " ms" << std::endl;
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queryDist = mAveragePointSpacing * 150;
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// Test with the radius search
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std::cout << "Radius search (" << num_test << " tests)"<< std::endl;
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float avgTime = 0.0f;
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for (int ii = 0; ii < num_test; ii++)
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{
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time.restart();
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std::vector<unsigned int> indeces;
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std::vector<float> dists;
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kdTreeVcg.doQueryDist(mesh.vert[test_indeces[ii]].cP(), queryDist, indeces, dists);
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avgTime += time.elapsed();
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}
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std::cout << "Time (radius = " << queryDist << "): " << avgTime << " ms (mean " << avgTime / num_test << "ms)" << std::endl;
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// Test with the k-nearest search
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std::cout << "k-Nearest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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vcg::KdTree<CMesh::ScalarType>::PriorityQueue queue;
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kdTreeVcg.doQueryK(mesh.vert[test_indeces[ii]].cP(), kNearest, queue);
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avgTime += time.elapsed();
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}
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std::cout << "Time (k = " << kNearest << "): " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl;
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// Test with the closest search
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std::cout << "Closest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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unsigned int index;
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float minDist;
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kdTreeVcg.doQueryClosest(randomSamples[ii], index, minDist);
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avgTime += time.elapsed();
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}
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std::cout << "Time : " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl << std::endl;
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}
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void testNanoFLANN(CMesh& mesh, std::vector<unsigned int>& test_indeces, std::vector<vcg::Point3f> randomSamples)
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{
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std::cout << "==================================================="<< std::endl;
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std::cout << "nanoFLANN" << std::endl;
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PointCloud<float> cloud;
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cloud.pts.resize(mesh.vert.size());
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for (size_t i=0; i < mesh.vert.size(); i++)
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{
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cloud.pts[i].x = mesh.vert[i].P().X();
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cloud.pts[i].y = mesh.vert[i].P().Y();
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cloud.pts[i].z = mesh.vert[i].P().Z();
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}
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typedef nanoflann::KDTreeSingleIndexAdaptor<
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nanoflann::L2_Simple_Adaptor<float, PointCloud<float> > ,
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PointCloud<float>,
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3 /* dim */
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> my_kd_tree_t;
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// Construction of the nanoFLANN KDtree
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QTime time;
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time.start();
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my_kd_tree_t index(3, cloud, nanoflann::KDTreeSingleIndexAdaptorParams(16) );
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index.buildIndex();
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std::cout << "Build nanoFlann: " << time.elapsed() << " ms" << std::endl;
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// Test with the radius search
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std::cout << "Radius search (" << num_test << " tests)"<< std::endl;
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float avgTime = 0.0f;
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std::vector<std::pair<size_t,float> > ret_matches;
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nanoflann::SearchParams params;
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for (int ii = 0; ii < num_test; ii++)
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{
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time.restart();
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const size_t nMatches = index.radiusSearch(mesh.vert[test_indeces[ii]].P().V(), queryDist, ret_matches, params);
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avgTime += time.elapsed();
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}
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std::cout << "Time (radius = " << queryDist << "): " << avgTime << " ms (mean " << avgTime / num_test << "ms)" << std::endl;
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// Test with the k-nearest search
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std::cout << "k-Nearest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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std::vector<size_t> ret_index(kNearest);
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std::vector<float> out_dist_sqr(kNearest);
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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index.knnSearch(mesh.vert[test_indeces[ii]].P().V(), kNearest, &ret_index[0], &out_dist_sqr[0]);
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avgTime += time.elapsed();
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}
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std::cout << "Time (k = " << kNearest << "): " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl;
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// Test with the closest search
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std::cout << "Closest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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std::vector<size_t> ret_index_clos(1);
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std::vector<float> out_dist_sqr_clos(1);
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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index.knnSearch(randomSamples[ii].V(), 1, &ret_index_clos[0], &out_dist_sqr_clos[0]);
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avgTime += time.elapsed();
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}
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std::cout << "Time : " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl << std::endl;
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}
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void testUniformGrid(CMesh& mesh, std::vector<unsigned int>& test_indeces, std::vector<vcg::Point3f>& randomSamples)
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{
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std::cout << "==================================================="<< std::endl;
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std::cout << "Uniform Grid" << std::endl;
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QTime time;
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time.start();
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// Construction of the uniform grid
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typedef vcg::GridStaticPtr<CMesh::VertexType, CMesh::VertexType::ScalarType> MeshGrid;
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MeshGrid uniformGrid;
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uniformGrid.Set(mesh.vert.begin(), mesh.vert.end());
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std::cout << "Build: " << time.elapsed() << " ms" << std::endl;
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// Test with the radius search
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std::cout << "Radius search (" << num_test << " tests)"<< std::endl;
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float avgTime = 0.0f;
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for (int ii = 0; ii < num_test; ii++)
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{
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time.restart();
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std::vector<CMesh::VertexPointer> vertexPtr;
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std::vector<CMesh::VertexType::CoordType> points;
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std::vector<float> dists;
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vcg::tri::GetInSphereVertex(mesh, uniformGrid, mesh.vert[test_indeces[ii]].cP(), queryDist, vertexPtr, dists, points);
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avgTime += time.elapsed();
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}
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std::cout << "Time (radius = " << queryDist << "): " << avgTime << " ms (mean " << avgTime / num_test << "ms)" << std::endl;
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// Test with the k-nearest search
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std::cout << "k-Nearest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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std::vector<CMesh::VertexPointer> vertexPtr;
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std::vector<CMesh::VertexType::CoordType> points;
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std::vector<float> dists;
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vcg::tri::GetKClosestVertex(mesh, uniformGrid, kNearest, mesh.vert[test_indeces[ii]].cP(), mesh.bbox.Diag(), vertexPtr, dists, points);
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avgTime += time.elapsed();
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}
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std::cout << "Time (k = " << kNearest << "): " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl;
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// Test with the Closest search
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std::cout << "Closest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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float minDist;
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vcg::tri::GetClosestVertex(mesh, uniformGrid, randomSamples[ii], mesh.bbox.Diag(), minDist);
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avgTime += time.elapsed();
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}
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std::cout << "Time : " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl << std::endl;
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}
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void testSpatialHashing(CMesh& mesh, std::vector<unsigned int>& test_indeces, std::vector<vcg::Point3f>& randomSamples)
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{
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std::cout << "==================================================="<< std::endl;
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std::cout << "Spatial Hashing" << std::endl;
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QTime time;
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time.start();
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// Construction of the uniform grid
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typedef vcg::SpatialHashTable<CMesh::VertexType, CMesh::VertexType::ScalarType> MeshGrid;
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MeshGrid uniformGrid;
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uniformGrid.Set(mesh.vert.begin(), mesh.vert.end());
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std::cout << "Build: " << time.elapsed() << " ms" << std::endl;
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// Test with the radius search
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std::cout << "Radius search (" << num_test << " tests)"<< std::endl;
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float avgTime = 0.0f;
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for (int ii = 0; ii < num_test; ii++)
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{
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time.restart();
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std::vector<CMesh::VertexPointer> vertexPtr;
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std::vector<CMesh::VertexType::CoordType> points;
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std::vector<float> dists;
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vcg::tri::GetInSphereVertex(mesh, uniformGrid, mesh.vert[test_indeces[ii]].cP(), queryDist, vertexPtr, dists, points);
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avgTime += time.elapsed();
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}
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std::cout << "Time (radius = " << queryDist << "): " << avgTime << " ms (mean " << avgTime / num_test << "ms)" << std::endl;
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// Test with the k-nearest search
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std::cout << "k-Nearest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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std::vector<CMesh::VertexPointer> vertexPtr;
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std::vector<CMesh::VertexType::CoordType> points;
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std::vector<float> dists;
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vcg::tri::GetKClosestVertex(mesh, uniformGrid, kNearest, mesh.vert[test_indeces[ii]].cP(), mesh.bbox.Diag(), vertexPtr, dists, points);
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avgTime += time.elapsed();
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}
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std::cout << "Time (k = " << kNearest << "): " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl;
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// Test with the Closest search
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std::cout << "Closest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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float minDist;
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vcg::tri::GetClosestVertex(mesh, uniformGrid, randomSamples[ii], mesh.bbox.Diag(), minDist);
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avgTime += time.elapsed();
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}
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std::cout << "Time : " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl << std::endl;
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}
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void testPerfectSpatialHashing(CMesh& mesh, std::vector<unsigned int>& test_indeces)
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{
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std::cout << "==================================================="<< std::endl;
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std::cout << "Perfect Spatial Hashing" << std::endl;
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QTime time;
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time.start();
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// Construction of the uniform grid
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typedef vcg::SpatialHashTable<CMesh::VertexType, CMesh::VertexType::ScalarType> MeshGrid;
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MeshGrid uniformGrid;
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uniformGrid.Set(mesh.vert.begin(), mesh.vert.end());
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std::cout << "Build: " << time.elapsed() << " ms" << std::endl;
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// Test with the radius search
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std::cout << "Radius search (" << num_test << " tests)"<< std::endl;
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float avgTime = 0.0f;
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for (int ii = 0; ii < num_test; ii++)
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{
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time.restart();
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std::vector<CMesh::VertexPointer> vertexPtr;
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std::vector<CMesh::VertexType::CoordType> points;
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std::vector<float> dists;
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vcg::tri::GetInSphereVertex(mesh, uniformGrid, mesh.vert[test_indeces[ii]].cP(), queryDist, vertexPtr, dists, points);
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avgTime += time.elapsed();
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}
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std::cout << "Time (radius = " << queryDist << "): " << avgTime << " ms (mean " << avgTime / num_test << "ms)" << std::endl << std::endl;
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}
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void testOctree(CMesh& mesh, std::vector<unsigned int>& test_indeces, std::vector<vcg::Point3f>& randomSamples)
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{
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std::cout << "==================================================="<< std::endl;
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std::cout << "Octree" << std::endl;
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QTime time;
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time.start();
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// Construction of the uniform grid
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typedef vcg::Octree<CMesh::VertexType, CMesh::VertexType::ScalarType> MeshGrid;
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MeshGrid uniformGrid;
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uniformGrid.Set(mesh.vert.begin(), mesh.vert.end());
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std::cout << "Build: " << time.elapsed() << " ms" << std::endl;
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// Test with the radius search
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std::cout << "Radius search (" << num_test << " tests)"<< std::endl;
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float avgTime = 0.0f;
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for (int ii = 0; ii < num_test; ii++)
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{
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time.restart();
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std::vector<CMesh::VertexPointer> vertexPtr;
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std::vector<CMesh::VertexType::CoordType> points;
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std::vector<float> dists;
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vcg::tri::GetInSphereVertex(mesh, uniformGrid, mesh.vert[test_indeces[ii]].cP(), queryDist, vertexPtr, dists, points);
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avgTime += time.elapsed();
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}
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std::cout << "Time (radius = " << queryDist << "): " << avgTime << " ms (mean " << avgTime / num_test << "ms)" << std::endl;
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// Test with the k-nearest search
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std::cout << "k-Nearest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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std::vector<CMesh::VertexPointer> vertexPtr;
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std::vector<CMesh::VertexType::CoordType> points;
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std::vector<float> dists;
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vcg::tri::GetKClosestVertex(mesh, uniformGrid, kNearest, mesh.vert[test_indeces[ii]].cP(), mesh.bbox.Diag(), vertexPtr, dists, points);
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avgTime += time.elapsed();
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}
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std::cout << "Time (k = " << kNearest << "): " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl;
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// Test with the Closest search
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std::cout << "Closest search (" << num_test*10 << " tests)"<< std::endl;
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avgTime = 0.0f;
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for (int ii = 0; ii < num_test * 10; ii++)
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{
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time.restart();
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float minDist;
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vcg::tri::GetClosestVertex(mesh, uniformGrid, randomSamples[ii], mesh.bbox.Diag(), minDist);
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avgTime += time.elapsed();
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}
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std::cout << "Time : " << avgTime << " ms (mean " << avgTime / (num_test * 10) << "ms)" << std::endl << std::endl;
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}
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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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std::cout << "Invalid arguments" << std::endl;
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CMesh mesh;
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if (vcg::tri::io::Importer<CMesh>::Open(mesh, argv[1]) != 0)
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std::cout << "Invalid filename" << std::endl;
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std::cout << "Mesh BBox diagonal: " << mesh.bbox.Diag() << std::endl;
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std::cout << "Max point random offset: " << mesh.bbox.Diag() / 1000.0f << std::endl << std::endl;
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vcg::math::MarsenneTwisterRNG randGen;
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randGen.initialize(0);
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std::vector<vcg::Point3f> randomSamples;
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for (int i = 0; i < num_test * 10; i++)
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randomSamples.push_back(vcg::math::GeneratePointOnUnitSphereUniform<float>(randGen) * randGen.generate01() * mesh.bbox.Diag() / ratio);
|
|
|
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std::vector<unsigned int> test_indeces;
|
|
for (int i = 0; i < num_test * 10; i++)
|
|
{
|
|
int index = randGen.generate01() * (mesh.vert.size() - 1);
|
|
test_indeces.push_back(index);
|
|
randomSamples[i] += mesh.vert[i].P();
|
|
}
|
|
|
|
testKDTree(mesh, test_indeces, randomSamples);
|
|
testNanoFLANN(mesh, test_indeces, randomSamples);
|
|
testUniformGrid(mesh, test_indeces, randomSamples);
|
|
testSpatialHashing(mesh, test_indeces, randomSamples);
|
|
testPerfectSpatialHashing(mesh, test_indeces);
|
|
testOctree(mesh, test_indeces, randomSamples);
|
|
}
|