You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41 lines
1.3 KiB
41 lines
1.3 KiB
// 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_COLUMNIZE_H
|
|
#define IGL_COLUMNIZE_H
|
|
#include "igl_inline.h"
|
|
|
|
#include <Eigen/Core>
|
|
namespace igl
|
|
{
|
|
// "Columnize" a stack of block matrices. If A = [A1,A2,A3,...,Ak] with each A*
|
|
// an m by n block then this produces the column vector whose entries are
|
|
// B(j*m*k+i*k+b) = A(i,b*n+j);
|
|
// or if A = [A1;A2;...;Ak] then
|
|
// B(j*m*k+i*k+b) = A(i+b*m,j);
|
|
//
|
|
// Templates:
|
|
// T should be a eigen matrix primitive type like int or double
|
|
// Inputs:
|
|
// A m*k by n (dim: 1) or m by n*k (dim: 2) eigen Matrix of type T values
|
|
// k number of blocks
|
|
// dim dimension in which blocks are stacked
|
|
// Output
|
|
// B m*n*k eigen vector of type T values,
|
|
//
|
|
// See also: transpose_blocks
|
|
template <typename DerivedA, typename DerivedB>
|
|
IGL_INLINE void columnize(
|
|
const Eigen::PlainObjectBase<DerivedA> & A,
|
|
const int k,
|
|
const int dim,
|
|
Eigen::PlainObjectBase<DerivedB> & B);
|
|
}
|
|
#ifndef IGL_STATIC_LIBRARY
|
|
# include "columnize.cpp"
|
|
#endif
|
|
#endif
|
|
|