text: // This file is part of Eigen, a lightweight C++ template library
  // for linear algebra.
  //
  // Copyright (C) 20010-2011 Hauke Heibel <hauke.heibel@gmail.com>
  //
  // This Source Code Form is subject to the terms of the Mozilla
  // Public License v. 2.0. If a copy of the MPL was not distributed
  // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
  
  #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 {};
  
      /**
       * \ingroup Splines_Module
       * \brief Compile-time attributes of the Spline class for Dynamic degree.
       **/
      template <typename Scalar_, int Dim_, int _Degree>
      struct SplineTraits< Spline<Scalar_, Dim_, _Degree>, Dynamic >
      {
        typedef Scalar_ Scalar; /*!< The spline curve's scalar type. */
        enum { Dimension = Dim_ /*!< The spline curve's dimension. */ };
        enum { Degree = _Degree /*!< The spline curve's degree. */ };
  
        enum { OrderAtCompileTime = _Degree==Dynamic ? Dynamic : _Degree+1 /*!< The spline curve's order at compile-time. */ };
        enum { NumOfDerivativesAtCompileTime = OrderAtCompileTime /*!< The number of derivatives defined for the current spline. */ };
        
        enum { DerivativeMemoryLayout = Dimension==1 ? RowMajor : ColMajor /*!< The derivative type's memory layout. */ };
  
        /** \brief The data type used to store non-zero basis functions. */
        typedef Array<Scalar,1,OrderAtCompileTime> BasisVectorType;
  
        /** \brief The data type used to store the values of the basis function derivatives. */
        typedef Array<Scalar,Dynamic,Dynamic,RowMajor,NumOfDerivativesAtCompileTime,OrderAtCompileTime> BasisDerivativeType;
        
        /** \brief The data type used to store the spline's derivative values. */
        typedef Array<Scalar,Dimension,Dynamic,DerivativeMemoryLayout,Dimension,NumOfDerivativesAtCompileTime> DerivativeType;
  
        /** \brief The point type the spline is representing. */
        typedef Array<Scalar,Dimension,1> PointType;
        
        /** \brief The data type used to store knot vectors. */
        typedef Array<Scalar,1,Dynamic> KnotVectorType;
  
        /** \brief The data type used to store parameter vectors. */
        typedef Array<Scalar,1,Dynamic> ParameterVectorType;
        
        /** \brief The data type representing the spline's control points. */
        typedef Array<Scalar,Dimension,Dynamic> ControlPointVectorType;
      };
  
      /**
       * \ingroup Splines_Module
       * \brief Compile-time attributes of the Spline class for fixed degree.
       *
       * The traits class inherits all attributes from the SplineTraits of Dynamic degree.
       **/
      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 /*!< The spline curve's order at compile-time. */ };
        enum { NumOfDerivativesAtCompileTime = _DerivativeOrder==Dynamic ? Dynamic : _DerivativeOrder+1 /*!< The number of derivatives defined for the current spline. */ };
        
        enum { DerivativeMemoryLayout = Dim_==1 ? RowMajor : ColMajor /*!< The derivative type's memory layout. */ };
  
        /** \brief The data type used to store the values of the basis function derivatives. */
        typedef Array<Scalar_,Dynamic,Dynamic,RowMajor,NumOfDerivativesAtCompileTime,OrderAtCompileTime> BasisDerivativeType;
        
        /** \brief The data type used to store the spline's derivative values. */      
        typedef Array<Scalar_,Dim_,Dynamic,DerivativeMemoryLayout,Dim_,NumOfDerivativesAtCompileTime> DerivativeType;
      };
  
      /** \brief 2D float B-spline with dynamic degree. */
      typedef Spline<float,2> Spline2f;
      
      /** \brief 3D float B-spline with dynamic degree. */
      typedef Spline<float,3> Spline3f;
  
      /** \brief 2D double B-spline with dynamic degree. */
      typedef Spline<double,2> Spline2d;
      
      /** \brief 3D double B-spline with dynamic degree. */
      typedef Spline<double,3> Spline3d;
  }
  
  #endif // EIGEN_SPLINES_FWD_H
  