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Test if there is something on the optional

This commit is contained in:
Andreas Fabri 2021-02-05 12:25:27 +00:00
parent 6511f95999
commit d71057ce96
1 changed files with 45 additions and 37 deletions
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82
Intersections_3/include/CGAL/Intersections_3/internal/Iso_cuboid_3_Plane_3_intersection.h
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@ -97,11 +97,11 @@ intersection(
case 1:
{
//adj to an edge
if(points.size() == 4)
if(points.size() == 4) // plane outside of cub and just touching at the edge, and hence the endpoints of 4 other edges
{
return result_type(std::forward<Segment_3>(segments.front()));
}
//plane intersecting through an edge (not 2)
//plane intersecting through an edge (not 2) This then intersects 2 other edges in points
else
{
Poly res(4);
@ -251,43 +251,51 @@ intersection(
CGAL::Plane_3<K> >::result_type Pl_pl_type;
std::vector<Line_3> plane_intersections;
Pl_pl_type pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(0),
cub.vertex(1),
cub.vertex(5)));
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(0),
cub.vertex(3),
cub.vertex(4)));
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(0),
cub.vertex(1),
cub.vertex(3)));
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(7),
cub.vertex(6),
cub.vertex(1)));
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(7),
cub.vertex(4),
cub.vertex(3)));
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(7),
cub.vertex(6),
cub.vertex(4)));
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
Pl_pl_type pl_inter;
if(pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(0),
cub.vertex(1),
cub.vertex(5)))){
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
}
if (pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(0),
cub.vertex(3),
cub.vertex(4)))){
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
}
if (pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(0),
cub.vertex(1),
cub.vertex(3)))){
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
}
if (pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(7),
cub.vertex(6),
cub.vertex(1)))){
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
}
if (pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(7),
cub.vertex(4),
cub.vertex(3)))){
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
}
if (pl_inter = CGAL::intersection(pl, Plane_3(cub.vertex(7),
cub.vertex(6),
cub.vertex(4)))){
if(const Line_3* line = boost::get<Line_3>(&*pl_inter)){
plane_intersections.push_back(*line);
}
}
std::list<Segment_3> tmp_segs;
for(const auto& line : plane_intersections)
{