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added the code for meshing a union of balls. 

TODO: remove unique_hash_map from the construction of the triangulation:
This commit is contained in:
Nico Kruithof 2006-05-31 15:21:59 +00:00
parent 9d1909403b
commit 79bb80960b
10 changed files with 46 additions and 107 deletions
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2
Skin_surface_3/examples/Skin_surface_3/NGHK_skin_surface_simple.C
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@ -20,7 +20,7 @@ typedef CGAL::Polyhedron_3<K,Poly_items> Polyhedron;
int main(int argc, char *argv[]) {
if (argc < 2) {
std::cout << "Usage: " << argv[0] << " <cin-file>" << std::endl;
return 1;
return 0;
}
std::list<Weighted_point> l;

2
Skin_surface_3/examples/Skin_surface_3/NGHK_skin_surface_subdiv.C
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@ -20,7 +20,7 @@ typedef CGAL::Polyhedron_3<K,Poly_items> Polyhedron;
int main(int argc, char *argv[]) {
if (argc < 2) {
std::cout << "Usage: " << argv[0] << " <cin-file>" << std::endl;
return 1;
return 0;
}
std::list<Weighted_point> l;

4
Skin_surface_3/examples/Skin_surface_3/makefile
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@ -13,7 +13,7 @@ include $(CGAL_MAKEFILE)
# compiler flags
#---------------------------------------------------------------------#
CXXFLAGS = -O2\
CXXFLAGS = -g\
-I.\
-Idsrpdb/include\
-I../../include \
@ -30,7 +30,7 @@ LIBPATH = \
$(TESTSUITE_LIBPATH) \
$(CGAL_LIBPATH)
LDFLAGS = -O2\
LDFLAGS = -g\
$(TESTSUITE_LDFLAGS) \
$(LONG_NAME_PROBLEM_LDFLAGS) \
$(CGAL_LDFLAGS)

2
Skin_surface_3/examples/Skin_surface_3/skin_surface_pdb_reader.C
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@ -22,7 +22,7 @@ typedef CGAL::Polyhedron_3<K,Poly_items> Polyhedron;
int main(int argc, char *argv[]) {
if (argc < 2) {
std::cout << "Usage: " << argv[0] << " <pdb-file>" << std::endl;
return 1;
return 0;
}
std::list<Weighted_point> l;

9
Skin_surface_3/examples/Skin_surface_3/skin_surface_subdiv.C
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@ -2,7 +2,6 @@
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Skin_surface_3.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Skin_surface_polyhedral_items_3.h>
#include <CGAL/mesh_skin_surface_3.h>
#include <CGAL/subdivide_skin_surface_mesh_3.h>
#include <list>
@ -16,11 +15,7 @@ typedef CGAL::Skin_surface_3<Traits> Skin_surface_3;
typedef Skin_surface_3::FT FT;
typedef Skin_surface_3::Weighted_point Weighted_point;
typedef Skin_surface_3::Bare_point Bare_point;
// Each facet has a pointer to the tetrahedron of the TMC it is contained in
typedef Skin_surface_3::Triangulated_mixed_complex TMC;
typedef CGAL::Skin_surface_polyhedral_items_3<TMC> Poly_items;
typedef CGAL::Polyhedron_3<K,Poly_items> Polyhedron;
typedef CGAL::Polyhedron_3<K> Polyhedron;
int main(int argc, char *argv[]) {
std::list<Weighted_point> l;
@ -34,7 +29,7 @@ int main(int argc, char *argv[]) {
Polyhedron p;
CGAL::mesh_skin_surface_3(skin_surface, p);
CGAL::subdivide_skin_surface_mesh_3(p, skin_surface);
std::ofstream out("mesh.off");

69
Skin_surface_3/examples/Skin_surface_3/skin_surface_subdiv_with_normals.C
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@ -2,13 +2,12 @@
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Skin_surface_3.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Skin_surface_polyhedral_items_3.h>
#include <CGAL/mesh_skin_surface_3.h>
#include <CGAL/subdivide_skin_surface_mesh_3.h>
#include <list>
#include <fstream>
#include <CGAL/IO/Polyhedron_iostream.h>
#include "skin_surface_writer.h"
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Regular_triangulation_euclidean_traits_3<K> Traits;
@ -16,77 +15,23 @@ typedef CGAL::Skin_surface_3<Traits> Skin_surface_3;
typedef Skin_surface_3::FT FT;
typedef Skin_surface_3::Weighted_point Weighted_point;
typedef Skin_surface_3::Bare_point Bare_point;
// Each facet has a pointer to the tetrahedron of the TMC it is contained in
typedef Skin_surface_3::Triangulated_mixed_complex TMC;
typedef CGAL::Skin_surface_polyhedral_items_3<TMC> Poly_items;
typedef CGAL::Polyhedron_3<K,Poly_items> Polyhedron;
template <class Polyhedron, class SkinSurface>
/// Write polyhedron with normals:
void write_polyhedron_with_normals(Polyhedron &p,
SkinSurface &skin,
std::ostream &out)
{
typedef typename Polyhedron::Vertex_iterator Vertex_iterator;
typedef typename Polyhedron::Facet_iterator Facet_iterator;
typedef typename Polyhedron::Halfedge_around_facet_circulator HFC;
typedef typename Polyhedron::Vertex_handle Vertex_handle;
// Write header
out << "NOFF " << p.size_of_vertices ()
<< " " << p.size_of_facets()
<< " " << p.size_of_halfedges()
<< std::endl;
// Write vertices
typedef CGAL::Skin_surface_subdivision_policy_base_3<Polyhedron, SkinSurface>
Subdivision_policy;
Subdivision_policy *policy = get_subdivision_policy(p, skin);
for (Vertex_iterator vit = p.vertices_begin();
vit != p.vertices_end(); vit ++) {
out << vit->point() << " "
<< policy->normal(vit)
<< std::endl;
}
// Write faces
CGAL::Inverse_index<Vertex_handle> index(p.vertices_begin(),
p.vertices_end());
for(Facet_iterator fi = p.facets_begin();
fi != p.facets_end(); ++fi) {
HFC hc = fi->facet_begin();
HFC hc_end = hc;
std::size_t n = circulator_size( hc);
out << n;
do {
Vertex_handle vh = (*hc).vertex();
out << " " << index[vh];
} while (++hc != hc_end);
out << "\n";
}
}
typedef CGAL::Polyhedron_3<K> Polyhedron;
int main(int argc, char *argv[]) {
std::list<Weighted_point> l;
FT shrinkfactor = 0.5;
if (argc < 2) {
std::cout << "Usage: " << argv[0] << " <infile>" << std::endl;
exit(0);
}
std::ifstream in(argv[1]);
Weighted_point wp;
while (in >> wp) l.push_front(wp);
l.push_front(Weighted_point(Bare_point(0,0,0), 1));
l.push_front(Weighted_point(Bare_point(0,1,0), 2));
l.push_front(Weighted_point(Bare_point(0,0,2), 1));
Skin_surface_3 skin_surface(l.begin(), l.end(), shrinkfactor);
Polyhedron p;
CGAL::mesh_skin_surface_3(skin_surface, p);
CGAL::subdivide_skin_surface_mesh_3(p, skin_surface);
CGAL::subdivide_skin_surface_mesh_3(p, skin_surface);
std::ofstream out("mesh.off");
write_polyhedron_with_normals(p, skin_surface, out);

37
Skin_surface_3/examples/Skin_surface_3/union_of_balls_simple.C
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@ -1,30 +1,29 @@
// NGHK: NOT IN USE FOR NOW
// examples/Skin_surface_3/union_of_balls_simple.C
#include <CGAL/Skin_surface_traits_3.h>
#include <CGAL/skin_surface_3.h>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Union_of_balls_3.h>
#include <CGAL/Polyhedron_3.h>
// #include <CGAL/mesh_union_of_balls_3.h>
#include <list>
typedef CGAL::Skin_surface_traits_3<> Skin_surface_traits;
typedef Skin_surface_traits::Regular_traits Regular_traits;
typedef Regular_traits::Bare_point Reg_point;
typedef Regular_traits::Weighted_point Reg_weighted_point;
typedef CGAL::Polyhedron_3<Skin_surface_traits::Polyhedron_traits> Polyhedron;
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Regular_triangulation_euclidean_traits_3<K> Traits;
typedef CGAL::Union_of_balls_3<Traits> Union_of_balls_3;
typedef Union_of_balls_3::FT FT;
typedef Union_of_balls_3::Weighted_point Weighted_point;
typedef Union_of_balls_3::Bare_point Bare_point;
typedef CGAL::Polyhedron_3<K> Polyhedron;
int main(int argc, char *argv[]) {
return 0;
std::list<Weighted_point> l;
std::list<Reg_weighted_point> l;
l.push_front(Reg_weighted_point(Reg_point(0,0,0), 1));
l.push_front(Reg_weighted_point(Reg_point(0,1,0), 2));
l.push_front(Reg_weighted_point(Reg_point(0,0,2), 1));
l.push_front(Weighted_point(Bare_point(0,0,0), 1));
l.push_front(Weighted_point(Bare_point(0,1,0), 2));
l.push_front(Weighted_point(Bare_point(0,0,2), 1));
Polyhedron p;
Skin_surface_traits skin_surface_traits(1);
CGAL::skin_surface_3(l.begin(), l.end(), p, skin_surface_traits);
Union_of_balls_3 union_of_balls(l.begin(), l.end());
// Polyhedron p;
// CGAL::mesh_union_of_balls_3(union_of_balls, p);
return 0;
}

6
Skin_surface_3/include/CGAL/Skin_surface_3.h
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@ -17,8 +17,8 @@
//
// Author(s) : Nico Kruithof <Nico@cs.rug.nl>
#ifndef CGAL_CGAL_SKIN_SURFACE_3_H
#define CGAL_CGAL_SKIN_SURFACE_3_H
#ifndef CGAL_SKIN_SURFACE_3_H
#define CGAL_SKIN_SURFACE_3_H
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
@ -289,4 +289,4 @@ construct_bounding_box(Regular &regular)
CGAL_END_NAMESPACE
#endif // CGAL_CGAL_SKIN_SURFACE_TRAITS_3_H
#endif // CGAL_SKIN_SURFACE_3_H

8
Skin_surface_3/include/CGAL/Skin_surface_refinement_traits_3.h
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@ -176,8 +176,8 @@ private:
protected:
Skin_surface const &skin;
SS_vertex_map triang_vertex_signs;
T2P_converter const t2p_converter;
P2T_converter const p2t_converter;
T2P_converter t2p_converter;
P2T_converter p2t_converter;
};
template <class Polyhedron_3, class SkinSurface_3>
@ -225,13 +225,13 @@ public:
P_point to_surface(P_vertex_handle vh)
{
SS_cell_handle ch = Base::skin.locate(Base::p2t_converter(vh->point()));
SS_cell_handle ch = Base::skin.locate(p2t_converter(vh->point()));
return to_surface_along_transversal_segment(vh->point(),ch);
}
P_vector normal(P_vertex_handle vh)
{
SS_cell_handle ch = Base::skin.locate(Base::p2t_converter(vh->point()));
SS_cell_handle ch = Base::skin.locate(p2t_converter(vh->point()));
return ch->surf->gradient(vh->point());
}
};

14
Skin_surface_3/include/CGAL/Triangulated_mixed_complex_observer_3.h
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@ -188,9 +188,9 @@ public:
const Surface_RT &s,
const int orient) {
Q[1] = Q[3] = Q[4] = 0;
Q[0] = Q[2] = Q[5] = orient*(1-s);
Q[0] = Q[2] = Q[5] = orient/s;
surf = new Quadratic_surface(Q, c, s*(1-s)*w);
surf = new Quadratic_surface(Q, c, w);
}
void create_hyperboloid(const Surface_point &c,
@ -198,18 +198,18 @@ public:
const Surface_vector &t,
const Surface_RT &s,
const int orient) {
Surface_RT den = t*t;
Surface_RT den = t*t*s*(1-s);
Q[0] = orient*(- t.x()*t.x()/den + (1-s));
Q[0] = orient*(- t.x()*t.x()/den + 1/s);
Q[1] = orient*(-2*t.y()*t.x()/den);
Q[2] = orient*(- t.y()*t.y()/den + (1-s));
Q[2] = orient*(- t.y()*t.y()/den + 1/s);
Q[3] = orient*(-2*t.z()*t.x()/den);
Q[4] = orient*(-2*t.z()*t.y()/den);
Q[5] = orient*(- t.z()*t.z()/den + (1-s));
Q[5] = orient*(- t.z()*t.z()/den + 1/s);
surf = new Quadratic_surface(Q, c, s*(1-s)*w);
surf = new Quadratic_surface(Q, c, w);
}
Surface_RT Q[6];