75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
|
// This file is part of libigl, a simple c++ geometry processing library.
|
||
|
|
//
|
||
|
|
// Copyright (C) 2015 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_SLICE_MASK_H
|
||
|
|
#define IGL_SLICE_MASK_H
|
||
|
|
#include "igl_inline.h"
|
||
|
|
|
||
|
|
#include <Eigen/Sparse>
|
||
|
|
#include <Eigen/Core>
|
||
|
|
namespace igl
|
||
|
|
{
|
||
|
|
// Act like the matlab X(row_mask,col_mask) operator, where
|
||
|
|
// row_mask, col_mask are non-negative integer indices.
|
||
|
|
//
|
||
|
|
// Inputs:
|
||
|
|
// X m by n matrix
|
||
|
|
// R m list of row bools
|
||
|
|
// C n list of column bools
|
||
|
|
// Output:
|
||
|
|
// Y #trues-in-R by #trues-in-C matrix
|
||
|
|
//
|
||
|
|
// See also: slice_mask
|
||
|
|
|
||
|
|
template <typename DerivedX,typename DerivedY>
|
||
|
|
IGL_INLINE void slice_mask(
|
||
|
|
const Eigen::DenseBase<DerivedX> & X,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & R,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & C,
|
||
|
|
Eigen::PlainObjectBase<DerivedY> & Y);
|
||
|
|
template <typename DerivedX,typename DerivedY>
|
||
|
|
IGL_INLINE void slice_mask(
|
||
|
|
const Eigen::DenseBase<DerivedX> & X,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & R,
|
||
|
|
const int dim,
|
||
|
|
Eigen::PlainObjectBase<DerivedY> & Y);
|
||
|
|
//
|
||
|
|
// This templating is bad because the return type might not have the same
|
||
|
|
// size as `DerivedX`. This will probably only work if DerivedX has Dynamic
|
||
|
|
// as it's non-trivial sizes or if the number of rows in R happens to equal
|
||
|
|
// the number of rows in `DerivedX`.
|
||
|
|
template <typename DerivedX>
|
||
|
|
IGL_INLINE DerivedX slice_mask(
|
||
|
|
const Eigen::DenseBase<DerivedX> & X,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & R,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & C);
|
||
|
|
template <typename DerivedX>
|
||
|
|
IGL_INLINE DerivedX slice_mask(
|
||
|
|
const Eigen::DenseBase<DerivedX> & X,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & R,
|
||
|
|
const int dim);
|
||
|
|
template <typename XType, typename YType>
|
||
|
|
IGL_INLINE void slice_mask(
|
||
|
|
const Eigen::SparseMatrix<XType> & X,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & R,
|
||
|
|
const int dim,
|
||
|
|
Eigen::SparseMatrix<YType> & Y);
|
||
|
|
template <typename XType, typename YType>
|
||
|
|
IGL_INLINE void slice_mask(
|
||
|
|
const Eigen::SparseMatrix<XType> & X,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & R,
|
||
|
|
const Eigen::Array<bool,Eigen::Dynamic,1> & C,
|
||
|
|
Eigen::SparseMatrix<YType> & Y);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef IGL_STATIC_LIBRARY
|
||
|
|
# include "slice_mask.cpp"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|