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////////////////////////////////////////////////////////////////////////////////
//
// VertexFacetTable.cc
//
// produced: 16/06/98 jr
// last change: 16/06/98 jr
//
////////////////////////////////////////////////////////////////////////////////
#include "VertexFacetTable.hh"
// additional constructors:
VertexFacetTable::VertexFacetTable(const FastSimplicialComplex& sc) {
#ifdef CONSTRUCTOR_DEBUG
std::cout << "VertexFacetTable::VertexFacetTable(const FastSimplicialComplex&)"
<< std::endl;
#endif
Simplex support(sc.support());
size_type init_size = 0;
for (Simplex::iterator iter = support.begin();
iter != support.end();
++iter)
init_size = *iter;
init_size++;
resize(init_size);
for (size_type i = 0; i < maxindex(); ++i) {
for (FastSimplicialComplex::iterator iter = sc.begin();
iter != sc.end();
++iter)
if (iter->contains(i))
(*this)[i] += *iter;
}
}
// functions:
VertexFacetTable::operator FastSimplicialComplex() const {
FastSimplicialComplex result;
for (size_type i = 0; i < maxindex(); ++i) {
result += (*this)[i];
}
return result;
}
FastSimplicialComplex VertexFacetTable::star(const Simplex& simp) const {
FastSimplicialComplex result((FastSimplicialComplex)(*this));
for (Simplex::iterator iter = simp.begin(); iter != simp.end(); ++iter) {
result *= (*this)[*iter];
}
return result;
}
FastSimplicialComplex VertexFacetTable::link(const Simplex& simp) const {
FastSimplicialComplex result((FastSimplicialComplex)(*this));
for (Simplex::iterator iter = simp.begin(); iter != simp.end(); ++iter) {
result *= ((*this)[*iter] - simp);
}
return result;
}
const bool VertexFacetTable::contains_face(const Simplex& simp,
const size_type card,
const FastSimplicialComplex& sub) const {
if (card + 1 > sub._maxcard)
return false;
if (sub.contains(simp))
return false;
size_type maxmincard = sub._mincard;
size_type minmaxcard = sub._maxcard;
if (card + 1 > maxmincard)
maxmincard = card + 1;
for (Simplex::iterator simp_iter = simp.begin();
simp_iter != simp.end();
++simp_iter) {
size_type vf_mincard = (*this)[*simp_iter]._mincard;
size_type vf_maxcard = (*this)[*simp_iter]._maxcard;
if (vf_mincard > maxmincard)
maxmincard = vf_mincard;
if (vf_maxcard < minmaxcard)
minmaxcard = vf_maxcard;
}
const FastSimplicialComplex::IndexSet** setarray = new const FastSimplicialComplex::IndexSet*[card];
size_type intersection_index = 0;
for (size_type i = maxmincard; i < minmaxcard; ++i) {
size_type count = 0;
for (Simplex::iterator simp_iter = simp.begin();
simp_iter != simp.end();
++simp_iter) {
setarray[count++] = &(*this)[*(simp_iter)]._index_set[i];
}
if (sub._index_set[i].intersection_nonempty(setarray, card, intersection_index) != 0) {
delete []setarray;
#ifdef COMPUTATIONS_DEBUG
Simplex test_facet;
if (!sub.contains_face(simp)) {
std::cerr << "internal error: " << simp << " not face in " << *this << std::endl;
std::cerr << "intersection_index: " << intersection_index << std::endl;
std::cerr << "maxmincard: " << maxmincard << std::endl;
std::cerr << "minmaxcard: " << minmaxcard << std::endl;
for (size_type j = maxmincard; j < minmaxcard; ++j) {
std::cout << "card = " << j << std::endl;
for (Simplex::iterator simp_iter = simp.begin();
simp_iter != simp.end();
++simp_iter) {
std::cout << "(*this)[" << *simp_iter << "] = "
<< (*this)[*simp_iter]._index_set[j] << std::endl;
}
}
exit(1);
}
#endif
return true;
}
}
delete []setarray;
return false;
}
const bool VertexFacetTable::contains(const Simplex& simp) const {
for (size_type i = 0; i < maxindex(); ++i) {
if ((*this)[i].contains(simp)) {
return true;
}
}
return false;
}
const bool VertexFacetTable::contains_free_face(const Simplex& simp,
const size_type card,
const FastSimplicialComplex& sub,
Simplex& facet) const {
if (card + 2 > sub._maxcard)
return false;
if (sub.contains(simp))
return false;
size_type maxmincard = sub._mincard;
size_type minmaxcard = sub._maxcard;
if (card + 1 > maxmincard)
maxmincard = card + 1;
for (Simplex::iterator simp_iter = simp.begin();
simp_iter != simp.end();
++simp_iter) {
size_type vf_mincard = (*this)[*simp_iter]._mincard;
size_type vf_maxcard = (*this)[*simp_iter]._maxcard;
if (vf_mincard > maxmincard)
maxmincard = vf_mincard;
if (vf_maxcard < minmaxcard)
minmaxcard = vf_maxcard;
}
const FastSimplicialComplex::IndexSet** setarray = new const FastSimplicialComplex::IndexSet*[card];
size_type intersection_card = 0;
size_type intersection_index = 0;
for (size_type i = maxmincard; i < minmaxcard; ++i) {
size_type count = 0;
for (Simplex::iterator simp_iter = simp.begin();
simp_iter != simp.end();
++simp_iter) {
setarray[count++] = &(*this)[*simp_iter]._index_set[i];
}
size_type card_of_intersection =
sub._index_set[i].intersection_card(setarray, card, intersection_index);
if (card_of_intersection == 1) {
if (++intersection_card > 1) {
delete []setarray;
#ifdef COMPUTATIONS_DEBUG
if (sub.contains_free_face(simp, facet)) {
std::cerr << "internal error: " << simp << " free in " << *this << std::endl;
exit(1);
}
#endif
return false;
}
else {
facet = sub._index_table[i].get_obj(intersection_index);
}
}
else if (card_of_intersection > 1) {
delete []setarray;
#ifdef COMPUTATIONS_DEBUG
if (sub.contains_free_face(simp, facet)) {
std::cerr << "internal error: " << simp << " free in " << *this << std::endl;
exit(1);
}
#endif
return false;
}
}
if (intersection_card == 0) {
delete []setarray;
#ifdef COMPUTATIONS_DEBUG
if (sub.contains_free_face(simp, facet)) {
std::cerr << "internal error: " << simp << " free in " << *this << std::endl;
exit(1);
}
#endif
return false;
}
#ifdef COMPUTATIONS_DEBUG
Simplex test_facet;
if (!sub.contains_free_face(simp, test_facet)) {
std::cerr << "internal error: " << simp << " not free in " << *this << std::endl;
std::cerr << "intersection_index: " << intersection_index << std::endl;
std::cerr << "intersection_card: " << intersection_card << std::endl;
std::cerr << "sub.mincard: " << sub.mincard() << std::endl;
std::cerr << "sub.maxcard: " << sub.maxcard() << std::endl;
for (size_type j = maxmincard; j < minmaxcard; ++j) {
std::cout << "card = " << j << std::endl;
for (Simplex::iterator simp_iter = simp.begin();
simp_iter != simp.end();
++simp_iter) {
std::cout << "(*this)[" << *simp_iter << "] = "
<< (*this)[*simp_iter]._index_set[j] << std::endl;
}
}
exit(1);
}
#endif
delete []setarray;
return true;
}
// eof VertexFacetTable.cc
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