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/* Copyright (c) 2008-2025 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/.
*/
#include "command.h"
#include "progressbar.h"
#include "datatype.h"
#include "math/rng.h"
#include "image.h"
#include "algo/threaded_loop.h"
using namespace MR;
using namespace App;
void usage ()
{
AUTHOR = "J-Donald Tournier (jdtournier@gmail.com)";
SYNOPSIS = "Generate a test image of random numbers";
ARGUMENTS
+ Argument ("size", "the dimensions of the test data.").type_sequence_int ()
+ Argument ("data", "the output image.").type_image_out ();
OPTIONS
+ Stride::Options
+ DataType::options();
}
void run ()
{
vector<int> dim = argument[0];
Header header;
header.ndim() = dim.size();
for (size_t n = 0; n < dim.size(); ++n) {
header.size(n) = dim[n];
header.spacing(n) = 1.0f;
}
header.datatype() = DataType::from_command_line (DataType::Float32);
Stride::set_from_command_line (header, Stride::contiguous_along_spatial_axes (header));
auto image = Header::create (argument[1], header).get_image<float>();
struct fill { NOMEMALIGN
Math::RNG rng;
std::normal_distribution<float> normal;
void operator() (decltype(image)& v) { v.value() = normal(rng); }
};
ThreadedLoop ("generating random data...", image).run (fill(), image);
}
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