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* start of the Geometry module with a cross product and quaternion expressions

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(haven't tried them yet)
* applied the meta selector rule to MatrixBase::swap()
This commit is contained in:
Gael Guennebaud
2008-06-02 22:58:36 +00:00
parent 75de41a00b
commit 366971bea4
7 changed files with 480 additions and 26 deletions
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61
Eigen/src/Core/Swap.h
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@@ -5,12 +5,12 @@
//
// Eigen is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// Alternatively, you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
@@ -18,13 +18,16 @@
// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// You should have received a copy of the GNU Lesser General Public
// License and a copy of the GNU General Public License along with
// Eigen. If not, see <http://www.gnu.org/licenses/>.
#ifndef EIGEN_SWAP_H
#define EIGEN_SWAP_H
template <typename Derived, typename OtherDerived, bool IsVector = Derived::IsVectorAtCompileTime>
struct ei_swap_selector;
/** swaps *this with the expression \a other.
*
* \note \a other is only marked const because I couln't find another way
@@ -41,25 +44,7 @@ void MatrixBase<Derived>::swap(const MatrixBase<OtherDerived>& other)
MatrixBase<OtherDerived> *_other = const_cast<MatrixBase<OtherDerived>*>(&other);
if(SizeAtCompileTime == Dynamic)
{
Scalar tmp;
if(IsVectorAtCompileTime)
{
ei_assert(OtherDerived::IsVectorAtCompileTime && size() == _other->size());
for(int i = 0; i < size(); i++)
{
tmp = coeff(i);
coeffRef(i) = _other->coeff(i);
_other->coeffRef(i) = tmp;
}
}
else
for(int j = 0; j < cols(); j++)
for(int i = 0; i < rows(); i++)
{
tmp = coeff(i, j);
coeffRef(i, j) = _other->coeff(i, j);
_other->coeffRef(i, j) = tmp;
}
ei_swap_selector<Derived,OtherDerived>::run(derived(),other.const_cast_derived());
}
else // SizeAtCompileTime != Dynamic
{
@@ -69,4 +54,36 @@ void MatrixBase<Derived>::swap(const MatrixBase<OtherDerived>& other)
}
}
template<typename Derived, typename OtherDerived>
struct ei_swap_selector<Derived,OtherDerived,true>
{
inline static void run(Derived& src, OtherDerived& other)
{
typename Derived::Scalar tmp;
ei_assert(OtherDerived::IsVectorAtCompileTime && src.size() == other.size());
for(int i = 0; i < src.size(); i++)
{
tmp = src.coeff(i);
src.coeffRef(i) = other.coeff(i);
other.coeffRef(i) = tmp;
}
}
};
template<typename Derived, typename OtherDerived>
struct ei_swap_selector<Derived,OtherDerived,false>
{
inline void run(Derived& src, OtherDerived& other)
{
typename Derived::Scalar tmp;
for(int j = 0; j < src.cols(); j++)
for(int i = 0; i < src.rows(); i++)
{
tmp = src.coeff(i, j);
src.coeffRef(i, j) = other.coeff(i, j);
other.coeffRef(i, j) = tmp;
}
}
};
#endif // EIGEN_SWAP_H