add an example

Mesh_3/examples/Mesh_3/CMakeLists.txt

@@ -96,6 +96,10 @@ create_single_source_cgal_program("mesh_polyhedral_domain_with_features.cpp")
 target_link_libraries(mesh_polyhedral_domain_with_features
                       PUBLIC CGAL::Eigen3_support)
 
+create_single_source_cgal_program("mesh_polyhedral_domain_with_features_sizing.cpp")
+target_link_libraries(mesh_polyhedral_domain_with_features_sizing
+                      PUBLIC CGAL::Eigen3_support)
+
 create_single_source_cgal_program("mesh_polyhedral_domain_with_features_sm.cpp")
 target_link_libraries(mesh_polyhedral_domain_with_features_sm
                       PUBLIC CGAL::Eigen3_support)
@@ -195,6 +199,7 @@ if(CGAL_ACTIVATE_CONCURRENT_MESH_3 AND TARGET CGAL::TBB_support)
     mesh_polyhedral_domain
     mesh_polyhedral_domain_sm
     mesh_polyhedral_domain_with_features
+    mesh_polyhedral_domain_with_features_sizing
     mesh_polyhedral_domain_with_features_sm
     mesh_polyhedral_domain_with_lipschitz_sizing
     mesh_two_implicit_spheres_with_balls)

Mesh_3/examples/Mesh_3/mesh_polyhedral_domain_with_features_sizing.cpp

@@ -0,0 +1,66 @@
+#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
+
+#include <CGAL/Mesh_triangulation_3.h>
+#include <CGAL/Mesh_complex_3_in_triangulation_3.h>
+#include <CGAL/Mesh_criteria_3.h>
+
+#include <CGAL/Surface_mesh.h>
+#include <CGAL/Polyhedral_mesh_domain_with_features_3.h>
+#include <CGAL/make_mesh_3.h>
+#include <CGAL/Sizing_field_with_aabb_tree.h>
+
+// Domain
+using K = CGAL::Exact_predicates_inexact_constructions_kernel;
+using Polyhedron = CGAL::Surface_mesh<K::Point_3>;
+using Mesh_domain = CGAL::Polyhedral_mesh_domain_with_features_3<K, Polyhedron>;
+using Features_sizing_field = CGAL::Sizing_field_with_aabb_tree<K, Mesh_domain>;
+
+
+#ifdef CGAL_CONCURRENT_MESH_3
+typedef CGAL::Parallel_tag Concurrency_tag;
+#else
+typedef CGAL::Sequential_tag Concurrency_tag;
+#endif
+
+// Triangulation
+typedef CGAL::Mesh_triangulation_3<Mesh_domain,CGAL::Default,Concurrency_tag>::type Tr;
+
+typedef CGAL::Mesh_complex_3_in_triangulation_3<
+  Tr,Mesh_domain::Corner_index,Mesh_domain::Curve_index> C3t3;
+
+// Criteria
+typedef CGAL::Mesh_criteria_3<Tr> Mesh_criteria;
+
+namespace params = CGAL::parameters;
+
+int main(int argc, char*argv[])
+{
+  const std::string fname = (argc>1)?argv[1]:CGAL::data_file_path("meshes/fandisk.off");
+  std::ifstream input(fname);
+  Polyhedron polyhedron;
+  input >> polyhedron;
+  if(input.fail()){
+    std::cerr << "Error: Cannot read file " <<  fname << std::endl;
+    return EXIT_FAILURE;
+  }
+
+  // Create domain
+  Mesh_domain domain(polyhedron);
+
+  // Get sharp features
+  domain.detect_features();
+
+  // Mesh criteria
+  Features_sizing_field edges_sizing_field(0.07, domain);
+  Mesh_criteria criteria(params::edge_size(edges_sizing_field).
+                                 facet_distance(0.0072).
+                                 cell_radius_edge_ratio(3));
+
+  // Mesh generation
+  C3t3 c3t3 = CGAL::make_mesh_3<C3t3>(domain, criteria, params::no_exude().no_perturb());
+
+  // Output
+  CGAL::dump_c3t3(c3t3, "out_sizing_field_with_aabb_tree");
+
+  return EXIT_SUCCESS;
+}