songsenand
/
cgal
mirror of https://github.com/CGAL/cgal
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

fix delaunay.cpp improperly counting infinite edges in dimension 1 because calling incident_faces in that case, instead of incident_full_cells

This commit is contained in:
Samuel Hornus 2011-05-31 12:35:56 +00:00
parent 5fbec29fbe
commit 4cd3a9d860
2 changed files with 25 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Triangulation/TODO
View File

@ -77,9 +77,6 @@ ________________________________________________________________TRIANGULATION
*) Why vertex at infinity should have index 0 in all cells it appears ?
*) seems there is a bug in test triangulation.cpp for dimension 1: there is
zero vertices on the convex hull !! (should be 2)
_______________________________________________________DELAUNAY_TRIANGULATION
________________________________________________________REGULAR_TRIANGULATION

35
Triangulation/test/Triangulation/delaunay.cpp
View File

@ -34,13 +34,13 @@ void test(const int d, const string & type, const int N)
typedef CGAL::Random_points_in_iso_box_d<Point> Random_points_iterator;
DC pc(d);
cerr << "\nChecking Delaunay triangulation of (" << type << d << ") dimension with " << N << " points";
cerr << "\nBuilding Delaunay triangulation of (" << type << d << ") dimension with " << N << " points";
assert(pc.empty());
vector<Point> points;
CGAL::Random rng;
Random_points_iterator rand_it(d, 2.0, rng);
//CGAL::copy_n(rand_it, N, std::back_inserter(points));
//CGAL::copy_n(rand_it, N, back_inserter(points));
vector<int> coords(d);
for( int i = 0; i < N; ++i )
@ -60,27 +60,38 @@ void test(const int d, const string & type, const int N)
++fsit, ++nbfs;
cerr << nbfs << " + ";
vector<Full_cell_handle> infinite_full_cells;
pc.incident_full_cells(pc.infinite_vertex(), std::back_inserter(infinite_full_cells));
pc.incident_full_cells(pc.infinite_vertex(), back_inserter(infinite_full_cells));
nbis = infinite_full_cells.size();
cerr << nbis << " = " << (nbis+nbfs)
<< " = " << pc.number_of_full_cells();
cerr << "\nComplex has current dimension " << pc.current_dimension();
// Count convex hull vertices:
typedef std::vector<Face> Faces;
if( pc.ambient_dimension() > 1 )
{
typedef vector<Face> Faces;
Faces edges;
std::back_insert_iterator<Faces> out(edges);
pc.incident_upper_faces(pc.infinite_vertex(), 1, out);
// Count the number of points on the convex hull
std::cout << "\nThere are " << edges.size() << " vertices on the convex hull.";
back_insert_iterator<Faces> out(edges);
pc.incident_faces(pc.infinite_vertex(), 1, out);
cout << "\nThere are " << edges.size() << " vertices on the convex hull.";
edges.clear();
}
else // pc.ambient_dimension() == 1
{
typedef vector<Full_cell_handle> Cells;
Cells cells;
back_insert_iterator<Cells> out(cells);
pc.incident_full_cells(pc.infinite_vertex(), out);
cout << "\nThere are " << cells.size() << " vertices on the convex hull.";
cells.clear();
}
// Remove all !
std::cerr << "\nBefore removal: " << pc.number_of_vertices() << " vertices. After: ";
std::random_shuffle(points.begin(), points.end());
cerr << "\nBefore removal: " << pc.number_of_vertices() << " vertices. After: ";
random_shuffle(points.begin(), points.end());
pc.remove(points.begin(), points.end());
assert( pc.is_valid() );
std::cerr << pc.number_of_vertices() << " vertices.";
cerr << pc.number_of_vertices() << " vertices.";
// assert( pc.empty() ); NOT YET !
// CLEAR
pc.clear();
@ -114,6 +125,6 @@ int main(int argc, char **argv)
go<2>(N);
go<1>(N);
cerr << std::endl;
cerr << endl;
return 0;
}