exampleTrofoliKnot.cpp File Reference

#include <iostream>
#include <iterator>
#include "DGtal/base/Common.h"
#include "DGtal/helpers/StdDefs.h"
#include "ConfigExamples.h"
#include "DGtal/geometry/curves/parametric/Knot_3_1.h"
#include "DGtal/geometry/curves/parametric/NaiveParametricCurveDigitizer3D.h"

Include dependency graph for exampleTrofoliKnot.cpp:

Go to the source code of this file.

Functions
template<typename T>
unsigned char	findMainAxis (const T &curve, const long double &t)
int	main (int argc, char **argv)

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

Kacper Pluta (kacper.pluta@esiee.fr ) Laboratoire d'Informatique Gaspard-Monge - LIGM, A3SI, France

Date

2018/08/03

An example file for ParametriCurveDigitizer3D.

This file is part of the DGtal library.

Definition in file exampleTrofoliKnot.cpp.

Function Documentation

findMainAxis()

template<typename T>

unsigned char findMainAxis ( const T & curve, const long double & t )

inline

Definition at line 53 of file exampleTrofoliKnot.cpp.

{
 RealPoint value;
 value[0] = std::abs ( curve.xp ( t )[0] );
 value[1] = std::abs ( curve.xp ( t )[1] );
 value[2] = std::abs ( curve.xp ( t )[2] );
 
 if ( value[0] >= value[1] && value[0] >= value[2] )
  return 0;
 else if ( value[1] >= value[0] && value[1] >= value[2] )
  return 1;
 else
  return 2;
}

main()

int main	(	int	argc,
		char **	argv )

Definition at line 69 of file exampleTrofoliKnot.cpp.

{
 typedef Knot_3_1< Space > MyKnot;
 typedef NaiveParametricCurveDigitizer3D < MyKnot >  Digitizer;
 typedef NaiveParametricCurveDigitizer3D < MyKnot >::DigitalCurve MyDigitalCurve;
 typedef NaiveParametricCurveDigitizer3D < MyKnot >::MetaData MyMetaData;
 
 trace.info() << "exampleParamCurve3dDigitization" << endl;
 
 PolyscopeViewer<> viewer;
 
 MyDigitalCurve digitalCurve;
 MyMetaData metaData;
 MyKnot knot ( 10, 10, 10 );
 Digitizer digitize;
 digitize.attach ( &knot );
 digitize.init ( -2.1, 2.1, 0.0001 );
 digitize.digitize( back_insert_iterator < MyDigitalCurve> ( digitalCurve ), back_insert_iterator < MyMetaData > ( metaData ) );
 
 trace.info() << "Number of points: " << digitalCurve.size () << " number of metadata: " << metaData.size () << endl;
 
 for ( unsigned int i = 0; i < digitalCurve.size ( ); i++ )
 {
  if ( findMainAxis ( knot, metaData.at ( i ).first ) == 0 )
   viewer.drawColor ( Color ( 255, 0, 0, 128 ) );
  if ( findMainAxis ( knot, metaData.at ( i ).first ) == 1 )
   viewer.drawColor ( Color ( 0, 255, 0, 128 ) );
  if ( findMainAxis ( knot, metaData.at ( i ).first ) == 2 )
   viewer.drawColor ( Color ( 0, 0, 255, 128 ) );
  viewer << digitalCurve.at ( i );
 }
 
 viewer.show();
 return 0;
}

References digitize(), DGtal::Display3D< Space, KSpace >::drawColor(), findMainAxis(), DGtal::PolyscopeViewer< Space, KSpace >::show(), and DGtal::trace.