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fix bbox computation in c3t3_item

This commit is contained in:
Jane Tournois 2015-12-07 12:29:53 +01:00
parent 0a1ecead08
commit 0523d04cf4
2 changed files with 11 additions and 9 deletions
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17
Polyhedron/demo/Polyhedron/Scene_c3t3_item.cpp
View File

@ -418,17 +418,18 @@ void Scene_c3t3_item::compute_bbox() const {
if (isEmpty())
_bbox = Bbox();
else {
CGAL::Bbox_3 result = c3t3().vertices_in_complex_begin()->point().bbox();
for (C3t3::Vertices_in_complex_iterator
vit = ++c3t3().vertices_in_complex_begin(),
end = c3t3().vertices_in_complex_end();
vit != end; ++vit)
CGAL::Bbox_3 result =
c3t3().cells_in_complex_begin()->vertex(0)->point().bbox();
for (C3t3::Cells_in_complex_iterator
cit = ++c3t3().cells_in_complex_begin(),
cend = c3t3().cells_in_complex_end();
cit != cend; ++cit)
{
result = result + vit->point().bbox();
result = result + cit->vertex(0)->point().bbox();
//only one vertex should be a satisfactory approximation
}
_bbox = Bbox(result.xmin(), result.ymin(), result.zmin(),
result.xmax(), result.ymax(), result.zmax());
result.xmax(), result.ymax(), result.zmax());
}
}

3
Polyhedron/demo/Polyhedron/Scene_c3t3_item.h
View File

@ -85,7 +85,8 @@ public:
bool isFinite() const { return true; }
bool isEmpty() const {
return c3t3().triangulation().number_of_vertices() == 0;
return c3t3().triangulation().number_of_vertices() == 0
|| c3t3().number_of_cells() == 0;
}
void compute_bbox() const;