For example consider this code:
++
//
https://doc.cgal.org/latest/Triangulation_2/index.html#Section_2D_Triangulations_Constrained_Delaunay
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Constrained_Delaunay_triangulation_2.h>
#include <cassert>
#include <iostream>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef CGAL::Exact_predicates_tag Itag;
typedef CGAL::Constrained_Delaunay_triangulation_2<K, CGAL::Default, Itag>
CDT;
typedef CDT::Point Point;
int
main( )
{
CDT cdt;
std::cout << "Inserting a grid of 5x5 constraints " << std::endl;
for (int i = 1; i < 6; ++i)
cdt.insert_constraint( Point(0,i), Point(6,i));
for (int j = 1; j < 6; ++j)
cdt.insert_constraint( Point(j,0), Point(j,6));
assert(cdt.is_valid());
int count = 0;
for (CDT::Finite_edges_iterator eit = cdt.finite_edges_begin();
eit != cdt.finite_edges_end();
++eit)
if (cdt.is_constrained(*eit)) ++count;
std::cout << "The number of resulting constrained edges is ";
std::cout << count << std::endl;
return 0;
}
I can compile this with
cgal_create_CMakeLists -s executable
cmake -DCGAL_DIR=/usr/lib64/cmake .
make
or with a plain
g++ -lCGAL -lgmp executable.cpp
I have used CGAL and BOOST some years ago from Ruby, which was some work, but I
can not remember details currently. I think for Nim the ordinary wrapper
approach with c2nim makes not much sense because CGAL is using so many C++
templates. So I guess I have to use emit and/or importcpp and compile the whole
project to C++? Or maybe wrap the C++ code in plain C functions before calling
it from Nim?
