51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
|
// This file is part of libigl, a simple c++ geometry processing library.
|
||
|
|
//
|
||
|
|
// Copyright (C) 2018 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 ACCUMARRY_H
|
||
|
|
#define ACCUMARRY_H
|
||
|
|
#include "igl_inline.h"
|
||
|
|
#include <Eigen/Core>
|
||
|
|
namespace igl
|
||
|
|
{
|
||
|
|
// ACCUMARRY Like Matlab's accumarray. Accumulate values in V using subscripts
|
||
|
|
// in S.
|
||
|
|
//
|
||
|
|
// Inputs:
|
||
|
|
// S #S list of subscripts
|
||
|
|
// V #V list of values
|
||
|
|
// Outputs:
|
||
|
|
// A max(subs)+1 list of accumulated values
|
||
|
|
template <
|
||
|
|
typename DerivedS,
|
||
|
|
typename DerivedV,
|
||
|
|
typename DerivedA
|
||
|
|
>
|
||
|
|
void accumarray(
|
||
|
|
const Eigen::MatrixBase<DerivedS> & S,
|
||
|
|
const Eigen::MatrixBase<DerivedV> & V,
|
||
|
|
Eigen::PlainObjectBase<DerivedA> & A);
|
||
|
|
// Inputs:
|
||
|
|
// S #S list of subscripts
|
||
|
|
// V single value used for all
|
||
|
|
// Outputs:
|
||
|
|
// A max(subs)+1 list of accumulated values
|
||
|
|
template <
|
||
|
|
typename DerivedS,
|
||
|
|
typename DerivedA
|
||
|
|
>
|
||
|
|
void accumarray(
|
||
|
|
const Eigen::MatrixBase<DerivedS> & S,
|
||
|
|
const typename DerivedA::Scalar V,
|
||
|
|
Eigen::PlainObjectBase<DerivedA> & A);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef IGL_STATIC_LIBRARY
|
||
|
|
# include "accumarray.cpp"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|