example_traits.hpp

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/*
 *  Copyright (C) 2012 Josh Bialkowski (jbialk@mit.edu)
 *
 *  This file is part of mpblocks.
 *
 *  mpblocks is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  mpblocks is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with mpblocks.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef EDELSBRUNNER96_EXAMPLETRAITS_H_
#define EDELSBRUNNER96_EXAMPLETRAITS_H_

#include <vector>
#include <Eigen/Dense>
#include <edelsbrunner96.hpp>

namespace edelsbrunner96 {

struct ExampleTraits {
  static const unsigned int NDim = 2;

  typedef double Scalar;

  typedef Eigen::Matrix<Scalar, NDim, 1> Point;


  typedef Point* PointRef;

  typedef SimplexBase<ExampleTraits> Simplex;


  typedef Simplex* SimplexRef;


  class Storage {
    Point& operator[](PointRef p) {
      return *p;
    }

    PointRef NullPoint() {
      return nullptr;
    }

    Simplex& operator[](SimplexRef s) {
      return *s;
    }

    SimplexRef& NullSimplex() {
      return nullptr;
    }

    SimplexRef Promote() {
      SimplexRef result = nullptr;
      if (!free_.empty()) {
        result = free_.back();
        free_.pop_back();
      } else {
        result = new Simplex();
      }
      return result;
    }

    void Retire(SimplexRef simplex) {
      simplex->version++;
      free_.push_back(simplex);
    }

   private:
    std::vector<Simplex*> free_;
  };
};

}  // namespace edelsbrunner

#endif  // EDELSBRUNNER96_EXAMPLETRAITS_H_