frame.h

/*
 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/.
*/
 
#pragma once
 
namespace Ponca
{
    template <class DataPoint>
    class CenteredNeighborhoodFrame
    {
    public:
        using Scalar = typename DataPoint::Scalar;
        using VectorType = typename DataPoint::VectorType;
 
        static constexpr bool hasLocalFrame = true;
 
        PONCA_MULTIARCH inline explicit CenteredNeighborhoodFrame(const VectorType& _evalPos = VectorType::Zero())
            : m_p(_evalPos)
        {
        }
 
        PONCA_MULTIARCH inline explicit CenteredNeighborhoodFrame(const DataPoint& _evalPoint) : m_p(_evalPoint.pos())
        {
        }
 
        PONCA_MULTIARCH inline VectorType center() { return m_p; }
        PONCA_MULTIARCH inline VectorType center() const { return m_p; }
 
        PONCA_MULTIARCH inline void changeNeighborhoodFrame(const VectorType& _newEvalPos) { m_p = _newEvalPos; };
 
        PONCA_MULTIARCH [[nodiscard]] inline VectorType convertToGlobalBasis(const VectorType& _q,
                                                                             bool _isPositionVector = true) const
        {
            return (_isPositionVector ? (_q + m_p) : _q);
        }
 
        PONCA_MULTIARCH [[nodiscard]] inline VectorType convertToLocalBasis(const VectorType& _q,
                                                                            bool _isPositionVector = true) const
        {
            return (_isPositionVector ? (_q - m_p) : _q);
        }
 
    private:
        VectorType m_p; 
    };
    template <class DataPoint>
    class GlobalNeighborhoodFrame
    {
    public:
        using Scalar = typename DataPoint::Scalar;
        using VectorType = typename DataPoint::VectorType;
 
        static constexpr bool hasLocalFrame = false;
 
        PONCA_MULTIARCH inline explicit GlobalNeighborhoodFrame(const VectorType& /*_evalPos*/ = VectorType::Zero()) {}
 
        PONCA_MULTIARCH inline void changeNeighborhoodFrame(const VectorType& /*_newEvalPos*/) {};
 
        PONCA_MULTIARCH inline VectorType center() { return VectorType::Zero(); }
        PONCA_MULTIARCH inline VectorType center() const { return VectorType::Zero(); }
        PONCA_MULTIARCH [[nodiscard]] inline const VectorType& convertToGlobalBasis(
            const VectorType& _q, bool /*_isPositionVector*/ = true) const
        {
            return _q;
        }
 
        PONCA_MULTIARCH [[nodiscard]] inline const VectorType& convertToLocalBasis(
            const VectorType& _q, bool /*_isPositionVector*/ = true) const
        {
            return _q;
        }
    };
}; // namespace Ponca