parallelIIShortcuts.cpp File Reference

#include <iostream>
#include "ConfigExamples.h"
#include "DGtal/base/Common.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/helpers/Shortcuts.h"
#include "DGtal/helpers/ShortcutsGeometry.h"

Include dependency graph for parallelIIShortcuts.cpp:

Go to the source code of this file.

Typedefs
typedef Shortcuts< Z3i::KSpace >	SH3
typedef ShortcutsGeometry< Z3i::KSpace >	SHG3

Functions
int	main ()

Detailed Description

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Author

David Coeurjolly (david.nosp@m..coe.nosp@m.urjol.nosp@m.ly@c.nosp@m.nrs.f.nosp@m.r) Laboratoire d'InfoRmatique en Image et Systèmes d'information - LIRIS (CNRS, UMR 5205), INSA-Lyon, France

Date

2026/06/08

This file is part of the DGtal library.

Definition in file parallelIIShortcuts.cpp.

Typedef Documentation

SH3

typedef Shortcuts<Z3i::KSpace> SH3

Definition at line 45 of file parallelIIShortcuts.cpp.

SHG3

typedef ShortcutsGeometry<Z3i::KSpace> SHG3

Definition at line 46 of file parallelIIShortcuts.cpp.

Function Documentation

main()

int main

(

void

)

[Parallel-instantiation]

[Parallel-instantiation]

[Parallel-run]

[Parallel-run]

Definition at line 49 of file parallelIIShortcuts.cpp.

{

    auto params = SH3::defaultParameters() | SHG3::defaultParameters();
    params( "polynomial", "goursat" )( "gridstep", 0.125 );
    auto implicit_shape  = SH3::makeImplicitShape3D  ( params );
    auto digitized_shape = SH3::makeDigitizedImplicitShape3D( implicit_shape, params );
    auto K         = SH3::getKSpace( params );
    auto surface   = SH3::makeDigitalSurface( digitized_shape, K, params );
    auto surfels   = SH3::getSurfelRange( surface, params );

    trace.info()<< "Input vol domain: "<< digitized_shape->getDomain() << std::endl;
    //Sequential
    trace.beginBlock("Single thread");
    auto curv      = SHG3::getIIMeanCurvatures( digitized_shape, surfels, params );
    trace.endBlock();
 
    //Parallel
    trace.beginBlock("4 threads on default axis");
    auto curv_par4  = SHG3::getIIMeanCurvatures( digitized_shape, surfels,
                                                params( "ii-thread-number", 4 ));
    trace.endBlock();
 
    //Parallel
    trace.beginBlock("8 threads on axis 0");
    auto curv_par8_0 = SHG3::getIIMeanCurvatures( digitized_shape, surfels,
                                                params( "ii-thread-number", 8 )
                                                ( "ii-split-axis", 0 ) );
    trace.endBlock();
 
    //Parallel
    trace.beginBlock("8 threads on axis 1");
    auto curv_par8_1  = SHG3::getIIMeanCurvatures( digitized_shape, surfels,
                                                params( "ii-thread-number", 8 )
                                                ( "ii-split-axis", 1 ) );
    trace.endBlock();
 
    //Parallel
    trace.beginBlock("8 threads on axis 2");
    auto curv_par8_2  = SHG3::getIIMeanCurvatures( digitized_shape, surfels,
                                                params( "ii-thread-number", 8 )
                                                ( "ii-split-axis", 2 ) );
    trace.endBlock();
 
    //Parallel
    trace.beginBlock("16 threads on axis 2");
    auto curv_par16  = SHG3::getIIMeanCurvatures( digitized_shape, surfels,
                                                 params( "ii-thread-number", 16 )
                                                 ( "ii-split-axis", 2 ) );
    trace.endBlock();
 
    return 0;
}

References DGtal::Trace::beginBlock(), DGtal::Shortcuts< Z3i::KSpace >::defaultParameters(), DGtal::ShortcutsGeometry< Z3i::KSpace >::defaultParameters(), DGtal::Trace::endBlock(), DGtal::ShortcutsGeometry< Z3i::KSpace >::getIIMeanCurvatures(), DGtal::Shortcuts< Z3i::KSpace >::getKSpace(), DGtal::Shortcuts< Z3i::KSpace >::getSurfelRange(), DGtal::Trace::info(), K, main(), DGtal::Shortcuts< Z3i::KSpace >::makeDigitalSurface(), DGtal::Shortcuts< Z3i::KSpace >::makeDigitizedImplicitShape3D(), DGtal::Shortcuts< Z3i::KSpace >::makeImplicitShape3D(), surface, and DGtal::trace.