DGtal  1.0.0
exampleParamCurve3dDigitization.cpp
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1 
30 #include <iostream>
32 #include <iterator>
33 #include "DGtal/base/Common.h"
34 #include "DGtal/helpers/StdDefs.h"
35 #include "ConfigExamples.h"
36 #include "DGtal/io/viewers/Viewer3D.h"
37 
39 #include "DGtal/geometry/curves/parametric/EllipticHelix.h"
40 #include "DGtal/geometry/curves/parametric/NaiveParametricCurveDigitizer3D.h"
42 
43 #ifdef WITH_VISU3D_QGLVIEWER
44 #include "DGtal/io/DrawWithDisplay3DModifier.h"
45 #endif
46 
48 
49 using namespace std;
50 using namespace DGtal;
51 using namespace Z3i;
52 using namespace functors;
53 
54 template <typename T>
55 inline
56 unsigned char findMainAxis ( const T & curve, const long double & t )
57 {
58  RealPoint value;
59  value[0] = std::abs ( curve.xp ( t )[0] );
60  value[1] = std::abs ( curve.xp ( t )[1] );
61  value[2] = std::abs ( curve.xp ( t )[2] );
62 
63  if ( value[0] >= value[1] && value[0] >= value[2] )
64  return 0;
65  else if ( value[1] >= value[0] && value[1] >= value[2] )
66  return 1;
67  else
68  return 2;
69 }
70 
72 int main( int argc, char** argv )
73 {
74  QApplication application(argc,argv);
76  typedef EllipticHelix < Space > MyHelix;
77  typedef NaiveParametricCurveDigitizer3D < MyHelix > DigitizerHelix;
81  trace.info() << "exampleParamCurve3dDigitization" << endl;
82 
83  Viewer3D<> viewer;
84 
86  MyDigitalCurve digitalCurve;
87  MyMetaData metaData;
88  MyHelix helix( 15, 10, 1 );
89  DigitizerHelix digitize;
90  digitize.init ( M_PI / 2., ( MyHelix::getPeriod() * 10. ) + M_PI / 2., 0.0001 );
91  digitize.attach ( &helix );
93 
95  digitize.digitize( back_insert_iterator < MyDigitalCurve> ( digitalCurve ), back_insert_iterator < MyMetaData > ( metaData ) );
97 
98  trace.info() << "Number of points: " << digitalCurve.size () << " number of metadata: " << metaData.size () << endl;
99 
100  viewer.show();
101 
103  for ( unsigned int i = 0; i < digitalCurve.size ( ); i++ )
104  {
105  if ( findMainAxis ( helix, metaData.at ( i ).first ) == 0 )
106  viewer.setFillColor ( Color ( 255, 0, 0, 128 ) );
107  if ( findMainAxis ( helix, metaData.at ( i ).first ) == 1 )
108  viewer.setFillColor ( Color ( 0, 255, 0, 128 ) );
109  if ( findMainAxis ( helix, metaData.at ( i ).first ) == 2 )
110  viewer.setFillColor ( Color ( 0, 0, 255, 128 ) );
111  viewer << SetMode3D ( digitalCurve.at ( i ).className ( ), "PavingWired" ) << digitalCurve.at ( i );
112  }
114  viewer << Viewer3D<>::updateDisplay;
115 
116  return application.exec();
117 }
118 // //
virtual void setFillColor(DGtal::Color aColor)
std::vector< std::pair< long double, unsigned int > > MetaData
Trace trace
Definition: Common.h:144
Aim: Implement a parametric curve – elliptic helix.
Definition: EllipticHelix.h:59
Aim: Digitization of 3D parametric curves. This method produces, for good parameters step and k_next,...
Aim: Implements basic operations that will be used in Point and Vector classes.
Definition: PointVector.h:165
int main(int argc, char **argv)
DGtal is the top-level namespace which contains all DGtal functions and types.
std::vector< Point > DigitalCurve
Digital curve type.
std::ostream & info()
void digitize(Shape &shape, std::vector< SCell > &sCells0, std::vector< SCell > &sCells1, KSpace &kspace, const double h)
Structure representing an RGB triple with alpha component.
Definition: Color.h:66
unsigned char findMainAxis(const T &curve, const long double &t)
virtual void show()
Overload QWidget method in order to add a call to updateList() method (to ensure that the lists are w...
Modifier class in a Display3D stream. Useful to choose your own mode for a given class....