testBall3DSurface.cpp

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#include <iostream>
#include "DGtal/shapes/parametric/Ball3D.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/io/Color.h"
 
using namespace std;
using namespace DGtal;
using namespace Z3i;
 
// Standard services - public :
 
 
int main(int /*argc*/, char** /*argv*/)
{
 
     
   
  // -------------------------------------------------------------------------- Type declaring
  typedef Ball3D<Space> EuclideanShape;
 
  bool test = true;
   
  // -------------------------------------------------------------------------- Creating the shape
  double  radius = 10;
  RealPoint c1(0, 0, 0 );
  EuclideanShape ball1( c1, radius );   
 
  trace.beginBlock("Arc length computing");
  double arcExp = ball1.arclength( make_pair(0.0,0.0), make_pair(0.0,M_PI) ,500 );
  double arcTheo = M_PI*radius;
  trace.info() <<"Computed arc length: "<< arcExp <<endl;
  trace.info() << "Theoric arc length: "<< arcTheo << endl;
  if(fabs(arcTheo- arcExp) < 0.1)
    {
      trace.info() <<"The arc length has a good value"<<endl;   
    }
  else
    {
      test=false;
    }
  trace.endBlock();
  
  trace.beginBlock("Surface length computing");
  double surfaceExp = ball1.surfacelength( make_pair(0.0,0.0), make_pair(M_PI*2,M_PI) ,500 );
  double surfaceTheo = 4.0*M_PI*radius*radius;
  trace.info() <<"Computed surface length: "<< surfaceExp <<endl;
  trace.info() << "Theoric surface length: "<< surfaceTheo << endl;
  if(fabs(surfaceExp- surfaceTheo) < 0.1)
    {
      trace.info() <<"The surface has a good value"<<endl;      
    }
  else
    {
      test=false;
    }
  trace.endBlock();
 
    
  if (test)
    return 0;
  else
    return -1;
}
// //