JGEOMETRY2D::JOmega2D Class Reference

Direction set covering (part of) circle. More...

#include <JOmega2D.hh>

Inheritance diagram for JGEOMETRY2D::JOmega2D:

Public Member Functions
	JOmega2D ()
	Default constructor.
	JOmega2D (const double grid)
	Constructor.
	JOmega2D (const JAngle2D &dir, const double phiMax, const double grid)
	Constructor.
void	configure (const JAngle2D &dir, const double phiMax, const double grid)
	Configure direction set.
int	find (const JAngle2D &dir) const
	Get index of direction closest to given direction.

Detailed Description

Direction set covering (part of) circle.

Definition at line 60 of file JOmega2D.hh.

Constructor & Destructor Documentation

JOmega2D() [1/3]

JGEOMETRY2D::JOmega2D::JOmega2D ( )

inline

Default constructor.

Definition at line 67 of file JOmega2D.hh.

               :
      JOmega2D_t()
    {}

JOmega2D() [2/3]

JGEOMETRY2D::JOmega2D::JOmega2D ( const double grid )

inline

Constructor.

Parameters

grid	angular spacing [rad]

Definition at line 77 of file JOmega2D.hh.

                                :
      JOmega2D_t()
    {
      configure(JAngle2D(0.0), PI, grid);
    }

JOmega2D() [3/3]

JGEOMETRY2D::JOmega2D::JOmega2D ( const JAngle2D & dir, const double phiMax, const double grid )

inline

Constructor.

Parameters

dir	principal direction
phiMax	maximal angle [rad]
grid	angular spacing [rad]

Definition at line 92 of file JOmega2D.hh.

                                   :
      JOmega2D_t()
    {
      configure(dir, phiMax, grid);
    }

Member Function Documentation

configure()

void JGEOMETRY2D::JOmega2D::configure ( const JAngle2D & dir, const double phiMax, const double grid )

inline

Configure direction set.

Parameters

dir	principal direction
phiMax	maximal angle [rad]
grid	angular spacing [rad]

Definition at line 108 of file JOmega2D.hh.

    {
      clear();
 
      // sanity checks
 
      double phi_min = 0.0;
      double phi_max = phiMax;
 
      if (phi_max < 0.0) phi_max = 0.0;
      if (phi_max > PI)  phi_max = PI;
 
      if (phi_max > phi_min) {
 
        const double rad = phi_max - phi_min; 
        const double bin = rad / floor(rad/grid + 0.5);             // angle step size
 
        for (double phi = phi_min; phi < phi_max + 0.5*bin; phi += bin) {
          
          if        (phi      < 0.5*bin) {
            push_back(dir);
          } else if (PI - phi < 0.5*bin) {
            push_back(dir + PI);
          } else {
            push_back(dir + phi);
            push_back(dir - phi);
          }
        }
      }
    }

find()

int JGEOMETRY2D::JOmega2D_t::find ( const JAngle2D & dir ) const

inlineinherited

Get index of direction closest to given direction.

Parameters

dir

direction

Returns

index (-1 if error)

Definition at line 37 of file JOmega2D.hh.

    {
      double dot   = -1.0;
      int    index = -1;
 
      for (const_iterator i = this->begin(); i != this->end(); ++i) {
 
        const double x = dir.getDot(*i);
        
        if (x > dot) {
          dot   = x;
          index = std::distance(this->begin(), i);
        }
      }
 
      return index;
    }

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The documentation for this class was generated from the following file:

• JOmega2D.hh