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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 "dwi/tractography/properties.h"
#include "dwi/tractography/scalar_file.h"
#include "dwi/tractography/streamline.h"
using namespace MR;
using namespace App;
void usage ()
{
AUTHOR = "David Raffelt (david.raffelt@florey.edu.au)";
SYNOPSIS = "Multiply corresponding values in track scalar files";
ARGUMENTS
+ Argument ("input1", "the first input track scalar file.").type_file_in()
+ Argument ("input1", "the second input track scalar file.").type_file_in()
+ Argument ("output", "the output track scalar file").type_file_out();
}
using value_type = float;
void run ()
{
DWI::Tractography::Properties properties1, properties2;
DWI::Tractography::ScalarReader<value_type> reader1 (argument[0], properties1);
DWI::Tractography::ScalarReader<value_type> reader2 (argument[1], properties2);
DWI::Tractography::check_properties_match (properties1, properties2, "scalar", false);
DWI::Tractography::ScalarWriter<value_type> writer (argument[2], properties1);
DWI::Tractography::TrackScalar<> tck_scalar1, tck_scalar2, tck_scalar_output;
while (reader1 (tck_scalar1)) {
if (!reader2 (tck_scalar2)) {
WARN ("No more track scalars left in input file \"" + std::string(argument[1]) +
"\" after " + str(tck_scalar1.get_index()+1) + " streamlines; " +
"but more data are present in input file \"" + std::string(argument[0]) + "\"");
break;
}
if (tck_scalar1.size() != tck_scalar2.size())
throw Exception ("track scalar length mismatch at streamline index " + str(tck_scalar1.get_index()));
tck_scalar_output.set_index (tck_scalar1.get_index());
tck_scalar_output.resize (tck_scalar1.size());
for (size_t i = 0; i < tck_scalar1.size(); ++i) {
tck_scalar_output[i] = tck_scalar1[i] * tck_scalar2[i];
}
writer (tck_scalar_output);
}
if (reader2 (tck_scalar2)) {
WARN ("No more track scalars left in input file \"" + std::string(argument[0]) +
"\" after " + str(tck_scalar1.get_index()+1) + " streamlines; " +
"but more data are present in input file \"" + std::string(argument[1]) + "\"");
}
}
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