// -*- tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=8 sw=2 sts=2:

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <cstddef>
#include <iostream>
#include <ostream>

#include <dune/common/exceptions.hh>
#include <dune/common/forloop.hh>
#include <dune/common/fvector.hh>

#include <dune/geometry/type.hh>
#include <dune/geometry/mockgeometry.hh>
#include <dune/geometry/generalvertexorder.hh>

#include <dune/localfunctions/lagrange/pk2d.hh>

#include "geometries.hh"
#include "test-fe.hh"

// tolerance for floating-point comparisons
static const double eps = 1e-9;
// stepsize for numerical differentiation
static const double delta = 1e-5;

template<int k>
struct Test {

  static void apply(int &result) {
    std::cout << "== Checking global-valued Pk2D elements (with k=" << k << ")"
              << std::endl;

    Dune::GeometryType gt;
    gt.makeTriangle();

    typedef TestGeometries<double, 2> TestGeos;
    static const TestGeos testGeos;

    typedef TestGeos::Geometry Geometry;
    const Geometry &geo = testGeos.get(gt);

    std::size_t vertexIds[] = {0, 1, 2};
    Dune::GeneralVertexOrder<2, std::size_t>
      vo(gt, vertexIds+0, vertexIds+3);

    Dune::Pk2DFiniteElementFactory<Geometry, double, k> feFactory;
    bool success = testFE(geo, feFactory.make(geo, vo), eps, delta);

    if(success && result != 1)
      result = 0;
    else
      result = 1;
  }
};

int main(int argc, char** argv) {
  try {
    int result = 77;

    static const std::size_t max_k = 20;
    Dune::ForLoop<Test, 0, max_k>::apply(result);

    return result;
  }
  catch (const Dune::Exception& e) {
    std::cerr << e << std::endl;
    throw;
  }
}
