kopia lustrzana https://github.com/jameshball/osci-render
95 wiersze
3.1 KiB
C++
95 wiersze
3.1 KiB
C++
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// L=============================================================================
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// L This software is distributed under the MIT license.
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// L Copyright 2021 Péter Kardos
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// L=============================================================================
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#pragma once
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#include "MatrixImpl.hpp"
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namespace mathter {
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namespace impl {
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template <class MatrixDestT, class MatrixSourceT>
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struct ReinterpretCompatible : std::false_type {};
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template <class T1,
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class T2,
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int Rows,
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int Columns,
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eMatrixOrder Order1,
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eMatrixOrder Order2,
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eMatrixLayout Layout1,
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eMatrixLayout Layout2,
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bool Packed1,
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bool Packed2>
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struct ReinterpretCompatible<Matrix<T1, Rows, Columns, Order1, Layout1, Packed1>, Matrix<T2, Rows, Columns, Order2, Layout2, Packed2>> {
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static constexpr bool value = std::is_convertible_v<T2, T1>;
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};
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template <class MatrixDestT, class MatrixSourceT>
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struct RepresentationCompatible : std::false_type {};
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template <class T1,
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class T2,
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int Rows,
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int Columns,
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eMatrixOrder Order1,
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eMatrixLayout Layout1,
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eMatrixLayout Layout2,
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bool Packed1,
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bool Packed2>
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struct RepresentationCompatible<Matrix<T1, Rows, Columns, Order1, Layout1, Packed1>, Matrix<T2, Columns, Rows, traits::OppositeOrder<Order1>::value, Layout2, Packed2>> {
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static constexpr bool value = std::is_convertible_v<T2, T1>;
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};
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template <class T1,
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class T2,
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int Rows,
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int Columns,
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eMatrixOrder Order1,
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eMatrixLayout Layout1,
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eMatrixLayout Layout2,
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bool Packed1,
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bool Packed2>
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struct RepresentationCompatible<Matrix<T1, Rows, Columns, Order1, Layout1, Packed1>, Matrix<T2, Rows, Columns, Order1, Layout2, Packed2>> {
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static constexpr bool value = std::is_convertible_v<T2, T1>;
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};
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} // namespace impl
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/// <summary> Changes the type, order and layout of the matrix, but the elements stay at the same place. </summary>
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template <class MatrixDestT, class MatrixSourceT>
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auto matrix_reinterpret_cast(const MatrixSourceT& source) -> std::enable_if_t<impl::ReinterpretCompatible<MatrixDestT, MatrixSourceT>::value, MatrixDestT> {
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MatrixDestT dest;
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for (int i = 0; i < source.RowCount(); ++i) {
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for (int j = 0; j < source.ColumnCount(); ++j) {
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dest(i, j) = typename traits::MatrixTraits<MatrixDestT>::Type(source(i, j));
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}
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}
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return dest;
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}
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/// <summary> Changes the type, order and layout of the matrix.
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/// The elements are transposed according to the change in order. </summary>
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template <class MatrixDestT, class MatrixSourceT>
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auto matrix_representation_cast(const MatrixSourceT& source) -> std::enable_if_t<impl::RepresentationCompatible<MatrixDestT, MatrixSourceT>::value, MatrixDestT> {
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MatrixDestT dest;
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for (int i = 0; i < source.RowCount(); ++i) {
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for (int j = 0; j < source.ColumnCount(); ++j) {
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if constexpr (traits::MatrixTraits<MatrixDestT>::Order == traits::MatrixTraits<MatrixSourceT>::Order) {
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dest(i, j) = typename traits::MatrixTraits<MatrixDestT>::Type(source(i, j));
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}
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else {
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dest(j, i) = typename traits::MatrixTraits<MatrixDestT>::Type(source(i, j));
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}
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}
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}
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return dest;
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}
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} // namespace mathter
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