Trk::JacobianPolarToCartesian Class Reference

Jacobian for the transformation of polar parameters \( (locR,locPhi,\phi,\theta, q/p)\) to cartesian parametes \((locX,locY,\phi,\theta, q/p)\) : More...

#include <JacobianPolarToCartesian.h>

Inheritance diagram for Trk::JacobianPolarToCartesian:

Collaboration diagram for Trk::JacobianPolarToCartesian:

Public Member Functions
	JacobianPolarToCartesian (const double r, const double phi)
	~JacobianPolarToCartesian ()

Detailed Description

Jacobian for the transformation of polar parameters \( (locR,locPhi,\phi,\theta, q/p)\) to cartesian parametes \((locX,locY,\phi,\theta, q/p)\) :

• \( \frac{\partial locX}{\partial r} = cos\phi \)
  
• \( \frac{\partial locX}{\partial \phi} = -r\cot sin\phi \)
  
• \( \frac{\partial locY}{\partial r} = sin\phi \)
  
• \( \frac{\partial locY}{\partial \phi} = r\cdot cos\phi \)
  

Author

Andre.nosp@m.as.S.nosp@m.alzbu.nosp@m.rger.nosp@m.@cern.nosp@m..ch

Definition at line 31 of file JacobianPolarToCartesian.h.

Constructor & Destructor Documentation

JacobianPolarToCartesian()

Trk::JacobianPolarToCartesian::JacobianPolarToCartesian	(	const double	r,
		const double	phi )

Definition at line 12 of file JacobianPolarToCartesian.cxx.

                                                                                     :
    AmgMatrix(5,5)()
{
      // initialize to zero
      this->setIdentity();
 
      (*this)(Trk::locX,Trk::locR)       = std::cos(phi);
      (*this)(Trk::locX,Trk::locPhi)     = -r*std::sin(phi);
      (*this)(Trk::locY,Trk::locR)       = std::sin(phi);
      (*this)(Trk::locY,Trk::locPhi)     = r*std::cos(phi);    
}

~JacobianPolarToCartesian()

Trk::JacobianPolarToCartesian::~JacobianPolarToCartesian ( )

inline

Definition at line 34 of file JacobianPolarToCartesian.h.

{}

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

• JacobianPolarToCartesian.h
• JacobianPolarToCartesian.cxx