How to define a precision kernel

[kong2456878740]

Hi, I have successfully implemented cgal in java through your project, but I find that in C++ we usually need to select a precision kernel when creating an object such as Polyhedron_3

typedef CGAL::Simple_cartesian<double>     Kernel;
//typedef CGAL::Exact_predicates_inexact_constructions_kernel  Kernel;
typedef CGAL::Polyhedron_3<Kernel>         Polyhedron;
int main() {
    Polyhedron P;
}

I did not see in the constructor of Polyhedron_3 of the constructed java file that I can customize the Kernel, I can directly create Polyhedron_3 object without input Kernel, how can I define the precision kernel? Hope to get your reply

public Polyhedron_3() {
    this(CGAL_Polyhedron_3JNI.new_Polyhedron_3__SWIG_0(), true);
  }

  public Polyhedron_3(String off_filename) {
    this(CGAL_Polyhedron_3JNI.new_Polyhedron_3__SWIG_1(off_filename), true);
  }

  public Polyhedron_3(long v, long h, long f) {
    this(CGAL_Polyhedron_3JNI.new_Polyhedron_3__SWIG_2(v, h, f), true);
  }

[sloriot]

The kernel is predefined and is CGAL::Exact_predicates_inexact_constructions_kernel. It is not recommended to try to change it. Storage wise it does not change anything with Simple_cartesian<double>, you'll only get filtered predicates.