47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
#include "max.h"
|
|
#include "for_each.h"
|
|
#include "find_zero.h"
|
|
|
|
template <typename AType, typename DerivedB, typename DerivedI>
|
|
IGL_INLINE void igl::max(
|
|
const Eigen::SparseMatrix<AType> & A,
|
|
const int dim,
|
|
Eigen::PlainObjectBase<DerivedB> & B,
|
|
Eigen::PlainObjectBase<DerivedI> & I)
|
|
{
|
|
const int n = A.cols();
|
|
const int m = A.rows();
|
|
B.resize(dim==1?n:m);
|
|
B.setConstant(std::numeric_limits<typename DerivedB::Scalar>::lowest());
|
|
I.resize(dim==1?n:m);
|
|
for_each(A,[&B,&I,&dim](int i, int j,const typename DerivedB::Scalar v)
|
|
{
|
|
if(dim == 2)
|
|
{
|
|
std::swap(i,j);
|
|
}
|
|
// Coded as if dim == 1, assuming swap for dim == 2
|
|
if(v > B(j))
|
|
{
|
|
B(j) = v;
|
|
I(j) = i;
|
|
}
|
|
});
|
|
Eigen::VectorXi Z;
|
|
find_zero(A,dim,Z);
|
|
for(int j = 0;j<I.size();j++)
|
|
{
|
|
if(Z(j) != (dim==1?m:n) && 0 > B(j))
|
|
{
|
|
B(j) = 0;
|
|
I(j) = Z(j);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef IGL_STATIC_LIBRARY
|
|
// Explicit template instantiation
|
|
// generated by autoexplicit.sh
|
|
template void igl::max<bool, Eigen::Matrix<int, -1, 1, 0, -1, 1>, Eigen::Matrix<int, -1, 1, 0, -1, 1> >(Eigen::SparseMatrix<bool, 0, int> const&, int, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 1, 0, -1, 1> >&);
|
|
#endif
|