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This commit is contained in:
Andreas Fabri 2024-05-30 14:59:22 +01:00
parent 042cb277fb
commit b54a2eab1a
2 changed files with 87 additions and 5 deletions
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77
Surface_mesh_simplification/include/CGAL/Surface_mesh_simplification/Policies/Edge_collapse/Bounding_box_filter.h Normal file
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@ -0,0 +1,77 @@
// Copyright (c) 2024 GeometryFactory (France). All rights reserved.
//
// This file is part of CGAL (www.cgal.org).
//
// $URL$
// $Id$
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s) : Andreas Fabri
//
#ifndef CGAL_SURFACE_MESH_SIMPLIFICATION_POLICIES_EDGE_COLLAPSE_BOUNDING_BOX_FILTER_H
#define CGAL_SURFACE_MESH_SIMPLIFICATION_POLICIES_EDGE_COLLAPSE_BOUNDING_BOX_FILTER_H
#include <CGAL/license/Surface_mesh_simplification.h>
#include<CGAL/Surface_mesh_simplification/internal/Common.h>
#include <CGAL/property_map.h>
#include <optional>
namespace CGAL {
namespace Surface_mesh_simplification {
template<class BaseFilter = internal::Dummy_filter>
class Bounding_box_filter
{
public:
Bounding_box_filter(const BaseFilter& base_filter = BaseFilter())
: m_base_filter(base_filter)
{}
template <typename Profile>
std::optional<typename Profile::Point>
operator()(const Profile& profile, std::optional<typename Profile::Point> op) const
{
typedef typename Profile::VertexPointMap Vertex_point_map;
typedef typename Profile::Geom_traits Geom_traits;
typedef typename Geom_traits::Vector_3 Vector;
typedef typename boost::property_traits<Vertex_point_map>::value_type Point;
typedef typename boost::property_traits<Vertex_point_map>::reference Point_reference;
const Geom_traits& gt = profile.geom_traits();
const Vertex_point_map& vpm = profile.vertex_point_map();
op = m_base_filter(profile, op);
if(op)
{
const Point& placement = *op;
Bbox_3 bb;
for(auto vd : profile.link()){
Point_reference p = get(vpm, vd);
bb += p.bbox();
}
double wx = bb.xmax() - bb.xmin();
double wy = bb.ymax() - bb.ymin();
double wz = bb.zmax() - bb.zmin();
bb = Bbox_3(bb.xmin()- wx/10.0, bb.ymin() - wy/10.0, bb.zmin()- wz/10.0, bb.xmax() + wx/10.0, bb.ymax() + wy/10.0, bb.zmax()+ wz/10.0);
if(!do_overlap(bb, placement.bbox())){
return std::optional<typename Profile::Point>();
}
}
return op;
}
private:
const BaseFilter m_base_filter;
};
} // namespace Surface_mesh_simplification
} // namespace CGAL
#endif // CGAL_SURFACE_MESH_SIMPLIFICATION_POLICIES_EDGE_COLLAPSE_BOUNDING_BOX_FILTER_H

15
Surface_mesh_simplification/test/Surface_mesh_simplification/issue_8213.cpp
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@ -15,6 +15,7 @@ void Surface_simplification_external_trace(const std::string& s)
#include <CGAL/Surface_mesh_simplification/edge_collapse.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/Bounded_normal_change_filter.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/Bounding_box_filter.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/Face_count_stop_predicate.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/LindstromTurk_cost.h>
#include <CGAL/Surface_mesh_simplification/Policies/Edge_collapse/LindstromTurk_placement.h>
@ -52,12 +53,16 @@ int main(int argc, char** argv)
std::cout << "Input mesh has " << num_vertices(sm) << " vertices" << std::endl;
std::cout << "Input mesh has " << num_faces(sm) << " faces" << std::endl;
SMS::Face_count_stop_predicate<Surface_mesh> stop(1);
SMS::edge_collapse(sm, stop,
CGAL::parameters::filter(SMS::Bounded_normal_change_filter<>())
.get_cost(SMS::LindstromTurk_cost<Surface_mesh>())
.get_placement(SMS::LindstromTurk_placement<Surface_mesh>()));
SMS::Face_count_stop_predicate<Surface_mesh> stop(1);
SMS::edge_collapse(
surface_mesh,
stop,
CGAL::parameters::
filter(SMS::Bounded_normal_change_filter<SMS::Bounding_box_filter<>>(SMS::Bounding_box_filter<>()))
.get_cost(SMS::LindstromTurk_cost<Surface_mesh>())
.get_placement(SMS::LindstromTurk_placement<Surface_mesh>())
);
CGAL::IO::write_OFF(std::cout, sm, CGAL::parameters::stream_precision(17));
for(auto v : vertices(sm))