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/* Copyright (c) 2008-2022 the MRtrix3 contributors.
*
* 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/.
*
* Covered Software is provided under this License on an "as is"
* basis, without warranty of any kind, either expressed, implied, or
* statutory, including, without limitation, warranties that the
* Covered Software is free of defects, merchantable, fit for a
* particular purpose or non-infringing.
* See the Mozilla Public License v. 2.0 for more details.
*
* For more details, see http://www.mrtrix.org/.
*/
#ifndef __adapter_replicate_h__
#define __adapter_replicate_h__
#include "header.h"
#include "image_helpers.h"
#include "adapter/base.h"
namespace MR
{
namespace Adapter
{
template <class ImageType>
class Replicate :
public Base<Replicate<ImageType>,ImageType>
{ MEMALIGN(Replicate<ImageType>)
public:
using base_type = Base<Replicate<ImageType>, ImageType>;
using value_type = typename ImageType::value_type;
using base_type::name;
using base_type::ndim;
using base_type::spacing;
Replicate (ImageType& original, const Header& replication_template) :
base_type (original),
header_ (replication_template),
pos_ (std::max<size_t> (parent().ndim(), header_.ndim()), 0)
{
for (size_t n = 0; n < std::min<size_t> (parent().ndim(), header_.ndim()); ++n) {
if (n < parent().ndim())
parent().index(n) = 0;
if (parent().size(n) > 1 && parent().size(n) != header_.size(n))
throw Exception ("cannot replicate over non-singleton dimensions");
}
}
size_t ndim () const {
return header_.ndim();
}
ssize_t size (size_t axis) const {
return header_.size (axis);
}
float spacing (size_t axis) const {
return header_.spacing(axis);
}
ssize_t stride (size_t axis) const {
return axis < parent().ndim() ? parent().stride (axis) : 0;
}
ssize_t get_index (size_t axis) const {
return pos_[axis];
}
void move_index (size_t axis, ssize_t increment) {
pos_[axis] += increment;
if (axis < parent().ndim())
if (parent().size(axis) > 1)
parent().index(axis) += increment;
}
protected:
using base_type::parent;
Header header_;
vector<ssize_t> pos_;
};
}
}
#endif
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