答案 0 :(得分：1)
你应该传递帖子而不是图像，所以它会像
postsArray[indexPath.row]
indexPath取决于你的方式。如果segue是由单元格选择触发的，那么您可以将indexPath存储在didSelectRowAtIndexPath中，或者当您触发segue时可以将indexPath作为sender传递，或者如果在segue过程中保留indexPathForSelectedRow，则可以使用#include <CGAL/Advancing_front_surface_reconstruction.h>
#include <CGAL/compute_average_spacing.h>
#include <CGAL/Delaunay_triangulation_3.h>
#include <CGAL/Triangulation_data_structure_3.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/IO/Polyhedron_iostream.h>
#include <CGAL/Polygon_mesh_processing/refine.h>
#include <CGAL/Polygon_mesh_processing/fair.h>
typedef CGAL::Advancing_front_surface_reconstruction<> Reconstruction;
typedef Reconstruction::Triangulation_3 Triangulation_3;
typedef Reconstruction::Triangulation_data_structure_2 TDS_2;
typedef Reconstruction::Outlier_range Outlier_range;
typedef Reconstruction::Boundary_range Boundary_range;
typedef Reconstruction::Vertex_on_boundary_range Vertex_on_boundary_range;
typedef Reconstruction::Vertex_handle Vertex_handle;
typedef CGAL::Polyhedron_3<CGALMesher::Kernel> Polyhedron;
typedef CGAL::Surface_mesh<CGALMesher::Point> Mesh;
typedef CGAL::cpp11::array<std::size_t,3> Facet;
struct Construct {
Mesh& mesh;
template<typename PointIterator>
Construct(Mesh& mesh, PointIterator b, PointIterator e) : mesh(mesh) {
for (; b != e; ++b) {
boost::graph_traits<Mesh>::vertex_descriptor v;
v = add_vertex(mesh);
mesh.point(v) = *b;
}
}
Construct& operator=(const Facet f) {
typedef boost::graph_traits<Mesh>::vertex_descriptor vertex_descriptor;
typedef boost::graph_traits<Mesh>::vertices_size_type size_type;
mesh.add_face(vertex_descriptor(static_cast<size_type>(f[0])),
vertex_descriptor(static_cast<size_type>(f[1])),
vertex_descriptor(static_cast<size_type>(f[2])));
return *this;
}
Construct&
operator*() {
return *this;
}
Construct&
operator++() {
return *this;
}
Construct operator++(int) {
return *this;
}
};
void CGALMesher::AdvancingFrontMesher(std::vector<Point>& points) {
Mesh m;
Construct construct(m,points.begin(),points.end());
CGAL::advancing_front_surface_reconstruction(points.begin(), points.end(), construct);
std::ofstream mesh_off("mesh.off");
mesh_off << m;
mesh_off.close();
std::ifstream input("mesh.off");
Polyhedron poly;
if ( !input || !(input >> poly) || poly.empty() ) {
std::cerr << "Not a valid off file." << std::endl;
}
input.close();
std::vector<Polyhedron::Facet_handle> new_facets;
std::vector<Polyhedron::Vertex_handle> new_vertices;
CGAL::Polygon_mesh_processing::refine(poly,
faces(poly),
std::back_inserter(new_facets),
std::back_inserter(new_vertices),
CGAL::Polygon_mesh_processing::parameters::density_control_factor(3));
std::ofstream refined_off("refined.off");
refined_off << poly;
refined_off.close();
std::cout << "Refinement added " << new_vertices.size() << " vertices." << std::endl;
}
。