Revision a8478189041445d49d10950bc515d1701bfcbf59 authored by Sébastien Loriot on 29 December 2016, 17:02:36 UTC, committed by Sébastien Loriot on 29 December 2016, 17:02:36 UTC
1 parent 886b65e
Ridges_Umbilics_SM.cpp
#include <CGAL/Simple_cartesian.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/boost/graph/graph_traits_Surface_mesh.h>
#include "PolyhedralSurf_rings.h"
#include "compute_normals.h"
#include <CGAL/Ridges.h>
#include <CGAL/Umbilics.h>
#include <CGAL/Monge_via_jet_fitting.h>
#include <fstream>
#include <cassert>
#if defined(CGAL_USE_BOOST_PROGRAM_OPTIONS) && ! defined(DONT_USE_BOOST_PROGRAM_OPTIONS)
#include <boost/program_options.hpp>
namespace po = boost::program_options;
#endif
typedef CGAL::Simple_cartesian<double> Kernel;
typedef Kernel::FT FT;
typedef Kernel::Point_3 Point_3;
typedef Kernel::Vector_3 Vector_3;
typedef CGAL::Surface_mesh<Point_3> PolyhedralSurf;
typedef boost::graph_traits<PolyhedralSurf>::vertex_descriptor vertex_descriptor;
typedef boost::graph_traits<PolyhedralSurf>::vertex_iterator vertex_iterator;
typedef boost::graph_traits<PolyhedralSurf>::face_descriptor face_descriptor;
typedef T_PolyhedralSurf_rings<PolyhedralSurf> Poly_rings;
typedef CGAL::Monge_via_jet_fitting<Kernel> Monge_via_jet_fitting;
typedef Monge_via_jet_fitting::Monge_form Monge_form;
typedef PolyhedralSurf::Property_map<vertex_descriptor,FT> VertexFT_property_map;
typedef PolyhedralSurf::Property_map<vertex_descriptor,Vector_3> VertexVector_property_map;
//RIDGES
typedef CGAL::Ridge_line<PolyhedralSurf> Ridge_line;
typedef CGAL::Ridge_approximation < PolyhedralSurf,
VertexFT_property_map,
VertexVector_property_map > Ridge_approximation;
//UMBILICS
typedef CGAL::Umbilic<PolyhedralSurf> Umbilic;
typedef CGAL::Umbilic_approximation < PolyhedralSurf,
VertexFT_property_map,
VertexVector_property_map > Umbilic_approximation;
//create property maps
PolyhedralSurf::Property_map<vertex_descriptor,FT>
vertex_k1_pm, vertex_k2_pm,
vertex_b0_pm, vertex_b3_pm,
vertex_P1_pm, vertex_P2_pm;
PolyhedralSurf::Property_map<vertex_descriptor,Vector_3> vertex_d1_pm, vertex_d2_pm;
PolyhedralSurf::Property_map<face_descriptor,Vector_3> face2normal_pm;
// default fct parameter values and global variables
unsigned int d_fitting = 3;
unsigned int d_monge = 3;
unsigned int nb_rings = 0;//seek min # of rings to get the required #pts
unsigned int nb_points_to_use = 0;//
CGAL::Ridge_order tag_order = CGAL::Ridge_order_3;
double umb_size = 2;
bool verbose = false;
unsigned int min_nb_points = (d_fitting + 1) * (d_fitting + 2) / 2;
/* gather points around the vertex v using rings on the
polyhedralsurf. the collection of points resorts to 3 alternatives:
1. the exact number of points to be used
2. the exact number of rings to be used
3. nothing is specified
*/
template <typename VertexPointMap>
void gather_fitting_points(vertex_descriptor v,
std::vector<Point_3> &in_points,
Poly_rings& poly_rings,
VertexPointMap vpm)
{
//container to collect vertices of v on the PolyhedralSurf
std::vector<vertex_descriptor> gathered;
//initialize
in_points.clear();
//OPTION -p nb_points_to_use, with nb_points_to_use != 0. Collect
//enough rings and discard some points of the last collected ring to
//get the exact "nb_points_to_use"
if ( nb_points_to_use != 0 ) {
poly_rings.collect_enough_rings(v, nb_points_to_use, gathered);
if ( gathered.size() > nb_points_to_use ) gathered.resize(nb_points_to_use);
}
else { // nb_points_to_use=0, this is the default and the option -p is not considered;
// then option -a nb_rings is checked. If nb_rings=0, collect
// enough rings to get the min_nb_points required for the fitting
// else collect the nb_rings required
if ( nb_rings == 0 )
poly_rings.collect_enough_rings(v, min_nb_points, gathered);
else poly_rings.collect_i_rings(v, nb_rings, gathered);
}
//store the gathered points
std::vector<vertex_descriptor>::const_iterator
itb = gathered.begin(), ite = gathered.end();
CGAL_For_all(itb,ite) in_points.push_back(get(vpm,*itb));
}
/* Use the jet_fitting package and the class Poly_rings to compute
diff quantities.
*/
void compute_differential_quantities(PolyhedralSurf& P, Poly_rings& poly_rings)
{
//container for approximation points
std::vector<Point_3> in_points;
typedef boost::property_map<PolyhedralSurf,CGAL::vertex_point_t>::type VPM;
VPM vpm = get(CGAL::vertex_point,P);
//MAIN LOOP
vertex_iterator vitb = P.vertices_begin(), vite = P.vertices_end();
for (; vitb != vite; vitb++) {
//initialize
vertex_descriptor v = * vitb;
in_points.clear();
Monge_form monge_form;
Monge_via_jet_fitting monge_fit;
//gather points around the vertex using rings
gather_fitting_points(v, in_points, poly_rings, vpm);
//exit if the nb of points is too small
if ( in_points.size() < min_nb_points )
{std::cerr << "Too few points to perform the fitting" << std::endl; exit(1);}
//For Ridges we need at least 3rd order info
assert( d_monge >= 3);
// run the main fct : perform the fitting
monge_form = monge_fit(in_points.begin(), in_points.end(),
d_fitting, d_monge);
//switch min-max ppal curv/dir wrt the mesh orientation
const Vector_3 normal_mesh = computeFacetsAverageUnitNormal(P,v, face2normal_pm, Kernel());
monge_form.comply_wrt_given_normal(normal_mesh);
//Store monge data needed for ridge computations in property maps
vertex_d1_pm[v] = monge_form.maximal_principal_direction();
vertex_d2_pm[v] = monge_form.minimal_principal_direction();
vertex_k1_pm[v] = monge_form.coefficients()[0];
vertex_k2_pm[v] = monge_form.coefficients()[1];
vertex_b0_pm[v] = monge_form.coefficients()[2];
vertex_b3_pm[v] = monge_form.coefficients()[5];
if ( d_monge >= 4) {
//= 3*b1^2+(k1-k2)(c0-3k1^3)
vertex_P1_pm[v] =
3*monge_form.coefficients()[3]*monge_form.coefficients()[3]
+(monge_form.coefficients()[0]-monge_form.coefficients()[1])
*(monge_form.coefficients()[6]
-3*monge_form.coefficients()[0]*monge_form.coefficients()[0]
*monge_form.coefficients()[0]);
//= 3*b2^2+(k2-k1)(c4-3k2^3)
vertex_P2_pm[v] =
3*monge_form.coefficients()[4]*monge_form.coefficients()[4]
+(-monge_form.coefficients()[0]+monge_form.coefficients()[1])
*(monge_form.coefficients()[10]
-3*monge_form.coefficients()[1]*monge_form.coefficients()[1]
*monge_form.coefficients()[1]);
}
} //END FOR LOOP
}
///////////////MAIN///////////////////////////////////////////////////////
#if defined(CGAL_USE_BOOST_PROGRAM_OPTIONS) && ! defined(DONT_USE_BOOST_PROGRAM_OPTIONS)
int main(int argc, char *argv[])
#else
int main()
#endif
{
std::string if_name, of_name;// of_name same as if_name with '/' -> '_'
try {
#if defined(CGAL_USE_BOOST_PROGRAM_OPTIONS) && ! defined(DONT_USE_BOOST_PROGRAM_OPTIONS)
unsigned int int_tag;
po::options_description desc("Allowed options");
desc.add_options()
("help,h", "produce help message.")
("input-file,f", po::value<std::string>(&if_name)->default_value("data/poly2x^2+y^2-0.062500.off"),
"name of the input off file")
("degree-jet,d", po::value<unsigned int>(&d_fitting)->default_value(3),
"degree of the jet, 3 <= degre-jet <= 4")
("degree-monge,m", po::value<unsigned int>(&d_monge)->default_value(3),
"degree of the Monge rep, 3<= degree-monge <= degree-jet")
("nb-rings,a", po::value<unsigned int>(&nb_rings)->default_value(0),
"number of rings to collect neighbors. 0 means collect enough rings to make appro possible a>=1 fixes the nb of rings to be collected")
("nb-points,p", po::value<unsigned int>(&nb_points_to_use)->default_value(0),
"number of neighbors to use. 0 means this option is not considered, this is the default p>=1 fixes the nb of points to be used")
("ridge_order,t", po::value<unsigned int>(&int_tag)->default_value(3),
"Order of differential quantities used, must be 3 or 4")
("umbilic-patch-size,u", po::value<double>(&umb_size)->default_value(2),
"size of umbilic patches (as multiple of 1ring size)")
("verbose,v", po::value<bool>(&verbose)->default_value(false),
"verbose output on text file")
;
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);
po::notify(vm);
if (vm.count("help")) {
std::cerr << desc << "\n";
return 1;
}
if (vm.count("ridge_order")){
if ( int_tag == 3 ) tag_order = CGAL::Ridge_order_3;
if ( int_tag == 4 ) tag_order = CGAL::Ridge_order_4;
if ( int_tag != 3 && int_tag != 4 )
{std::cerr << "ridge_order must be CGAL::Ridge_order_3 or CGAL::Ridge_order_4";
return 1;}
}
#else
std::cerr << "Command-line options require Boost.ProgramOptions" << std::endl;
if_name = "data/poly2x^2+y^2-0.062500.off";
d_fitting = 3;
d_monge = 3;
nb_rings = 0;
nb_points_to_use = 0;
umb_size = 2;
verbose = false;
#endif
}
catch(std::exception& e) {
std::cerr << "error: " << e.what() << "\n";
return 1;
}
catch(...) {
std::cerr << "Exception of unknown type!\n";
}
//modify global variables
min_nb_points = (d_fitting + 1) * (d_fitting + 2) / 2;
//prepare output file names
assert(!if_name.empty());
of_name = if_name;
for(unsigned int i=0; i<of_name.size(); i++)
if (of_name[i] == '/') of_name[i]='_';
std::ostringstream str_4ogl;
str_4ogl << "data/"
<< of_name << "RIDGES"
<< "-d" << d_fitting
<< "-m" << d_monge
<< "-t" << tag_order
<< "-a" << nb_rings
<< "-p" << nb_points_to_use
<< ".4ogl.txt";
std::cout << str_4ogl.str() << std::endl ;
std::ofstream out_4ogl(str_4ogl.str().c_str() , std::ios::out);
//if verbose only...
std::ostringstream str_verb;
str_verb << "data/"
<< of_name << "RIDGES"
<< "-d" << d_fitting
<< "-m" << d_monge
<< "-t" << tag_order
<< "-a" << nb_rings
<< "-p" << nb_points_to_use
<< ".verb.txt";
std::cout << str_verb.str() << std::endl ;
std::ofstream out_verb(str_verb.str().c_str() , std::ios::out);
//load the model from <mesh.off>
PolyhedralSurf P;
std::ifstream stream(if_name.c_str());
stream >> P;
fprintf(stderr, "loadMesh %d Ves %d Facets\n",
(int)num_vertices(P), (int)num_faces(P));
if(verbose)
out_verb << "Polysurf with " << num_vertices(P)
<< " vertices and " << num_faces(P)
<< " facets. " << std::endl;
vertex_k1_pm = P.add_property_map<vertex_descriptor,FT>("v:k1",0).first;
vertex_k2_pm = P.add_property_map<vertex_descriptor,FT>("v:k2",0).first;
vertex_b0_pm = P.add_property_map<vertex_descriptor,FT>("v:b0",0).first;
vertex_b3_pm = P.add_property_map<vertex_descriptor,FT>("v:b3",0).first;
vertex_P1_pm = P.add_property_map<vertex_descriptor,FT>("v:P1",0).first;
vertex_P2_pm = P.add_property_map<vertex_descriptor,FT>("v:P2",0).first;
vertex_d1_pm = P.add_property_map<vertex_descriptor,Vector_3>("v:d1",Vector_3(0,0,0)).first;
vertex_d2_pm = P.add_property_map<vertex_descriptor,Vector_3>("v:d2",Vector_3(0,0,0)).first;
face2normal_pm = P.add_property_map<face_descriptor,Vector_3>("f:n",Vector_3(0,0,0)).first;
//exit if not enough points in the model
if (min_nb_points > num_vertices(P))
{std::cerr << "not enough points in the model" << std::endl; exit(1);}
//initialize Polyhedral data : normal of facets
compute_facets_normals(P,face2normal_pm, Kernel());
//create a Poly_rings object
Poly_rings poly_rings(P);
std::cout << "Compute differential quantities via jet fitting..." << std::endl;
//initialize the diff quantities property maps
compute_differential_quantities(P, poly_rings);
//---------------------------------------------------------------------------
//Ridges
//--------------------------------------------------------------------------
std::cout << "Compute ridges..." << std::endl;
Ridge_approximation ridge_approximation(P,
vertex_k1_pm, vertex_k2_pm,
vertex_b0_pm, vertex_b3_pm,
vertex_d1_pm, vertex_d2_pm,
vertex_P1_pm, vertex_P2_pm );
std::vector<Ridge_line*> ridge_lines;
std::back_insert_iterator<std::vector<Ridge_line*> > ii(ridge_lines);
//Find MAX_RIDGE, MIN_RIDGE, CREST_RIDGES
// ridge_approximation.compute_max_ridges(ii, tag_order);
// ridge_approximation.compute_min_ridges(ii, tag_order);
ridge_approximation.compute_crest_ridges(ii, tag_order);
// or with the global function
CGAL::compute_max_ridges(P,
vertex_k1_pm, vertex_k2_pm,
vertex_b0_pm, vertex_b3_pm,
vertex_d1_pm, vertex_d2_pm,
vertex_P1_pm, vertex_P2_pm,
ii, tag_order);
std::vector<Ridge_line*>::iterator iter_lines = ridge_lines.begin(),
iter_end = ridge_lines.end();
//OpenGL output
typedef boost::property_map<PolyhedralSurf,CGAL::vertex_point_t>::type VPM;
VPM vpm = get(CGAL::vertex_point,P);
for (;iter_lines!=iter_end;iter_lines++) (*iter_lines)->dump_4ogl(out_4ogl, vpm);
for (iter_lines = ridge_lines.begin();iter_lines!=iter_end;iter_lines++){
//verbose txt output
if (verbose){
(*iter_lines)->dump_verbose(out_verb,vpm);
}
delete *iter_lines;
}
//---------------------------------------------------------------------------
// UMBILICS
//--------------------------------------------------------------------------
std::cout << "Compute umbilics..." << std::endl;
std::vector<Umbilic*> umbilics;
std::back_insert_iterator<std::vector<Umbilic*> > umb_it(umbilics);
//explicit construction of the class
// Umbilic_approximation umbilic_approximation(P,
// vertex_k1_pm, vertex_k2_pm,
// vertex_d1_pm, vertex_d2_pm);
// umbilic_approximation.compute(umb_it, umb_size);
//or global function call
CGAL::compute_umbilics(P,
vertex_k1_pm, vertex_k2_pm,
vertex_d1_pm, vertex_d2_pm,
umb_it, umb_size);
std::vector<Umbilic*>::iterator iter_umb = umbilics.begin(),
iter_umb_end = umbilics.end();
// output
std::cout << "nb of umbilics " << umbilics.size() << std::endl;
for (;iter_umb!=iter_umb_end;iter_umb++) std::cout << **iter_umb;
//verbose txt output
if (verbose) {
out_verb << "nb of umbilics " << umbilics.size() << std::endl;
}
for ( iter_umb = umbilics.begin();iter_umb!=iter_umb_end;iter_umb++){
if (verbose) {
out_verb << **iter_umb;
}
delete *iter_umb;
}
return 0;
}
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