53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
|
|
//
|
|
// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
|
|
//
|
|
// 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/.
|
|
#ifndef IGL_MAT_MIN_H
|
|
#define IGL_MAT_MIN_H
|
|
#include "igl_inline.h"
|
|
#include <Eigen/Dense>
|
|
|
|
namespace igl
|
|
{
|
|
// Ideally this becomes a super overloaded function supporting everything
|
|
// that matlab's min supports
|
|
|
|
// Min function for matrices to act like matlab's min function. Specifically
|
|
// like [Y,I] = min(X,[],dim);
|
|
//
|
|
// Templates:
|
|
// T should be a eigen matrix primitive type like int or double
|
|
// Inputs:
|
|
// X m by n matrix
|
|
// dim dimension along which to take min
|
|
// Outputs:
|
|
// Y n-long sparse vector (if dim == 1)
|
|
// or
|
|
// Y m-long sparse vector (if dim == 2)
|
|
// I vector the same size as Y containing the indices along dim of minimum
|
|
// entries
|
|
//
|
|
// See also: mat_max
|
|
template <typename DerivedX, typename DerivedY, typename DerivedI>
|
|
IGL_INLINE void mat_min(
|
|
const Eigen::DenseBase<DerivedX> & X,
|
|
const int dim,
|
|
Eigen::PlainObjectBase<DerivedY> & Y,
|
|
Eigen::PlainObjectBase<DerivedI> & I);
|
|
// Use Y = X.colwise().minCoeff() instead
|
|
//// In-line wrapper
|
|
//template <typename T>
|
|
//IGL_INLINE Eigen::Matrix<T,Eigen::Dynamic,1> mat_min(
|
|
// const Eigen::Matrix<T,Eigen::Dynamic,Eigen::Dynamic> & X,
|
|
// const int dim);
|
|
}
|
|
|
|
#ifndef IGL_STATIC_LIBRARY
|
|
# include "mat_min.cpp"
|
|
#endif
|
|
|
|
#endif
|