basis_data.hpp

// Copyright (C) 2011-2012 by the BEM++ Authors
//
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// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
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// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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#ifndef fiber_basis_data_hpp
#define fiber_basis_data_hpp

#include "../common/common.hpp"

#include "../common/armadillo_fwd.hpp"
#include "../common/multidimensional_arrays.hpp"

namespace Fiber
{

enum BasisDataType
{
    VALUES = 0x0001,
    DERIVATIVES = 0x0002
};

template <typename ValueType> class ConstBasisDataSlice;
template <typename ValueType>
struct BasisData
{
    _3dArray<ValueType> values;

    _4dArray<ValueType> derivatives;

    int componentCount() const {
        return std::max<int>(values.extent(0), derivatives.extent(0));
    }

    int functionCount() const {
        return std::max<int>(values.extent(1), derivatives.extent(2));
    }

    int pointCount() const {
        return std::max<int>(values.extent(2), derivatives.extent(3));
    }

    ConstBasisDataSlice<ValueType> const_slice(int function, int point) const {
        return ConstBasisDataSlice<ValueType>(*this, function, point);
    }

};

template <typename ValueType>
class ConstBasisDataSlice
{
public:
    ConstBasisDataSlice(const BasisData<ValueType>& basisData,
                        int function, int point) :
        m_basisData(basisData), m_function(function), m_point(point) {}

    ValueType values(int dim) const {
        return m_basisData.values(dim, m_function, m_point);
    }

    ValueType derivatives(int dim, int direction) const {
        return m_basisData.derivatives(dim, direction, m_function, m_point);
    }

    int componentCount() const {
        return m_basisData.componentCount();
    }

private:
    const BasisData<ValueType>& m_basisData;
    int m_function, m_point;
};

} // namespace Fiber

#endif // BASIS_DATA_TYPES_HPP