// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 20010-2011 Hauke Heibel <hauke.heibel@gmail.com>
//
// Eigen is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// Alternatively, 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 2 of
// the License, or (at your option) any later version.
//
// Eigen 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 Lesser General Public License or the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License and a copy of the GNU General Public License along with
// Eigen. If not, see <http://www.gnu.org/licenses/>.

#ifndef EIGEN_SPLINES_FWD_H
#define EIGEN_SPLINES_FWD_H

#include <Eigen/Core>

namespace Eigen
{
    template <typename Scalar, int Dim, int Degree = Dynamic> class Spline;

    template < typename SplineType, int _DerivativeOrder = Dynamic > struct SplineTraits {};

// hide specializations from doxygen
#ifndef DOXYGEN_SHOULD_SKIP_THIS

    template <typename _Scalar, int _Dim, int _Degree>
    struct SplineTraits< Spline<_Scalar, _Dim, _Degree>, Dynamic >
    {
      typedef _Scalar Scalar; /* The underlying scalar value. */
      enum { Dimension = _Dim }; /* The spline curve's dimension. */
      enum { Degree = _Degree }; /* The spline curve's degree. */

      enum { OrderAtCompileTime = _Degree==Dynamic ? Dynamic : _Degree+1 };
      enum { NumOfDerivativesAtCompileTime = OrderAtCompileTime };

      typedef Array<Scalar,1,OrderAtCompileTime> BasisVectorType;

      typedef Array<Scalar,Dynamic,Dynamic,RowMajor,NumOfDerivativesAtCompileTime,OrderAtCompileTime> BasisDerivativeType;
      typedef Array<Scalar,Dimension,Dynamic,ColMajor,Dimension,NumOfDerivativesAtCompileTime> DerivativeType;

      typedef Array<Scalar,Dimension,1> PointType;
      typedef Array<Scalar,1,Dynamic> KnotVectorType;
      typedef Array<Scalar,Dimension,Dynamic> ControlPointVectorType;
    };

    template < typename _Scalar, int _Dim, int _Degree, int _DerivativeOrder >
    struct SplineTraits< Spline<_Scalar, _Dim, _Degree>, _DerivativeOrder > : public SplineTraits< Spline<_Scalar, _Dim, _Degree> >
    {
      enum { OrderAtCompileTime = _Degree==Dynamic ? Dynamic : _Degree+1 };
      enum { NumOfDerivativesAtCompileTime = _DerivativeOrder==Dynamic ? Dynamic : _DerivativeOrder+1 };

      typedef Array<_Scalar,Dynamic,Dynamic,RowMajor,NumOfDerivativesAtCompileTime,OrderAtCompileTime> BasisDerivativeType;
      typedef Array<_Scalar,_Dim,Dynamic,ColMajor,_Dim,NumOfDerivativesAtCompileTime> DerivativeType;
    };

#endif

    typedef Spline<float,2> Spline2f;
    typedef Spline<float,3> Spline3f;

    typedef Spline<double,2> Spline2d;
    typedef Spline<double,3> Spline3d;
}

#endif // EIGEN_SPLINES_FWD_H