1 | // This file is part of Eigen, a lightweight C++ template library
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2 | // for linear algebra.
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3 | //
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4 | // Copyright (C) 20010-2011 Hauke Heibel <hauke.heibel@gmail.com>
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5 | //
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6 | // This Source Code Form is subject to the terms of the Mozilla
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7 | // Public License v. 2.0. If a copy of the MPL was not distributed
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8 | // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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9 |
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10 | #ifndef EIGEN_SPLINES_FWD_H
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11 | #define EIGEN_SPLINES_FWD_H
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12 |
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13 | #include <Eigen/Core>
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14 |
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15 | namespace Eigen
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16 | {
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17 | template <typename Scalar, int Dim, int Degree = Dynamic> class Spline;
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18 |
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19 | template < typename SplineType, int DerivativeOrder = Dynamic > struct SplineTraits {};
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20 |
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21 | /**
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22 | * \ingroup Splines_Module
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23 | * \brief Compile-time attributes of the Spline class for Dynamic degree.
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24 | **/
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25 | template <typename _Scalar, int _Dim, int _Degree>
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26 | struct SplineTraits< Spline<_Scalar, _Dim, _Degree>, Dynamic >
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27 | {
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28 | typedef _Scalar Scalar; /*!< The spline curve's scalar type. */
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29 | enum { Dimension = _Dim /*!< The spline curve's dimension. */ };
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30 | enum { Degree = _Degree /*!< The spline curve's degree. */ };
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31 |
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32 | enum { OrderAtCompileTime = _Degree==Dynamic ? Dynamic : _Degree+1 /*!< The spline curve's order at compile-time. */ };
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33 | enum { NumOfDerivativesAtCompileTime = OrderAtCompileTime /*!< The number of derivatives defined for the current spline. */ };
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34 |
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35 | enum { DerivativeMemoryLayout = Dimension==1 ? RowMajor : ColMajor /*!< The derivative type's memory layout. */ };
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36 |
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37 | /** \brief The data type used to store non-zero basis functions. */
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38 | typedef Array<Scalar,1,OrderAtCompileTime> BasisVectorType;
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39 |
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40 | /** \brief The data type used to store the values of the basis function derivatives. */
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41 | typedef Array<Scalar,Dynamic,Dynamic,RowMajor,NumOfDerivativesAtCompileTime,OrderAtCompileTime> BasisDerivativeType;
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42 |
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43 | /** \brief The data type used to store the spline's derivative values. */
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44 | typedef Array<Scalar,Dimension,Dynamic,DerivativeMemoryLayout,Dimension,NumOfDerivativesAtCompileTime> DerivativeType;
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45 |
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46 | /** \brief The point type the spline is representing. */
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47 | typedef Array<Scalar,Dimension,1> PointType;
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48 |
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49 | /** \brief The data type used to store knot vectors. */
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50 | typedef Array<Scalar,1,Dynamic> KnotVectorType;
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51 |
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52 | /** \brief The data type representing the spline's control points. */
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53 | typedef Array<Scalar,Dimension,Dynamic> ControlPointVectorType;
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54 | };
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55 |
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56 | /**
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57 | * \ingroup Splines_Module
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58 | * \brief Compile-time attributes of the Spline class for fixed degree.
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59 | *
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60 | * The traits class inherits all attributes from the SplineTraits of Dynamic degree.
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61 | **/
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62 | template < typename _Scalar, int _Dim, int _Degree, int _DerivativeOrder >
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63 | struct SplineTraits< Spline<_Scalar, _Dim, _Degree>, _DerivativeOrder > : public SplineTraits< Spline<_Scalar, _Dim, _Degree> >
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64 | {
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65 | enum { OrderAtCompileTime = _Degree==Dynamic ? Dynamic : _Degree+1 /*!< The spline curve's order at compile-time. */ };
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66 | enum { NumOfDerivativesAtCompileTime = _DerivativeOrder==Dynamic ? Dynamic : _DerivativeOrder+1 /*!< The number of derivatives defined for the current spline. */ };
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67 |
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68 | enum { DerivativeMemoryLayout = _Dim==1 ? RowMajor : ColMajor /*!< The derivative type's memory layout. */ };
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69 |
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70 | /** \brief The data type used to store the values of the basis function derivatives. */
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71 | typedef Array<_Scalar,Dynamic,Dynamic,RowMajor,NumOfDerivativesAtCompileTime,OrderAtCompileTime> BasisDerivativeType;
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72 |
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73 | /** \brief The data type used to store the spline's derivative values. */
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74 | typedef Array<_Scalar,_Dim,Dynamic,DerivativeMemoryLayout,_Dim,NumOfDerivativesAtCompileTime> DerivativeType;
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75 | };
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76 |
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77 | /** \brief 2D float B-spline with dynamic degree. */
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78 | typedef Spline<float,2> Spline2f;
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79 |
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80 | /** \brief 3D float B-spline with dynamic degree. */
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81 | typedef Spline<float,3> Spline3f;
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82 |
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83 | /** \brief 2D double B-spline with dynamic degree. */
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84 | typedef Spline<double,2> Spline2d;
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85 |
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86 | /** \brief 3D double B-spline with dynamic degree. */
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87 | typedef Spline<double,3> Spline3d;
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88 | }
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89 |
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90 | #endif // EIGEN_SPLINES_FWD_H
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