#include <CSCSlantedWireGeometry.h>

Inheritance diagram for CSCSlantedWireGeometry:

Public Member Functions
CSCWireGeometry *	clone () const

	CSCSlantedWireGeometry (double wireSpacing, double yOfFirstWire, double narrow, double wide, double length, float wireAngle)

int	nearestWire (const LocalPoint &lp) const

float	wireAngle () const

float	yOfWire (float wire, float x=0.) const

virtual	~CSCSlantedWireGeometry ()

Public Member Functions inherited from CSCWireGeometry
	CSCWireGeometry (double wireSpacing, double yOfFirstWire, double narrowWidthOfPlane, double wideWidthOfPlane, double lengthOfPlane)

std::pair< float, float >	equationOfWire (float wire) const

LocalPoint	intersection (float m1, float c1, float m2, float c2) const

double	lengthOfPlane () const

double	narrowWidthOfPlane () const

double	wideWidthOfPlane () const

std::pair< LocalPoint, LocalPoint >	wireEnds (float wire) const

double	wireSpacing () const

std::vector< float >	wireValues (float wire) const

std::pair< float, float >	yLimitsOfWirePlane () const

double	yOfFirstWire () const

virtual	~CSCWireGeometry ()

Private Attributes
float	cosWireAngle

float	sinWireAngle

float	theWireAngle

float	theWireOffset

Detailed Description

A concrete CSCWireGeometry in which wires are slanted, i.e. they have a fixed, non-zero angle w.r.t. local x axis.

Author: Tim Cox

Definition at line 15 of file CSCSlantedWireGeometry.h.

Constructor & Destructor Documentation

virtual CSCSlantedWireGeometry::~CSCSlantedWireGeometry ( )

inlinevirtual

Definition at line 17 of file CSCSlantedWireGeometry.h.

17 {}

CSCSlantedWireGeometry::CSCSlantedWireGeometry	(	double	wireSpacing,
		double	yOfFirstWire,
		double	narrow,
		double	wide,
		double	length,
		float	wireAngle
	)

Constructor from wire spacing and wire angle

Definition at line 8 of file CSCSlantedWireGeometry.cc.

References funct::cos(), cosWireAngle, LogTrace, funct::sin(), sinWireAngle, and theWireOffset.

Referenced by clone().

                                                                                            :
   CSCWireGeometry( wireSpacing, yOfFirstWire, narrow, wide, length ), theWireAngle( wireAngle ){
     cosWireAngle = cos( wireAngle );
     sinWireAngle = sin( wireAngle );
     theWireOffset = yOfFirstWire * cosWireAngle; 
     LogTrace("CSCWireGeometry|CSC") <<
       "CSCSlantedWireGeometry: constructed:\n" <<
       " wireSpacing = " << wireSpacing << 
       ", y1 = " << yOfFirstWire << 
       ", narrow_width = " << narrow << 
       ", wide_width = " << wide << 
       ", length = " << length << 
       ", wireAngle = " << wireAngle << 
       ", theWireOffset = " << theWireOffset;
 }

Member Function Documentation

CSCWireGeometry* CSCSlantedWireGeometry::clone ( void ) const

inlinevirtual

Clone to handle correct copy of component objects referenced by base class pointer.

Implements CSCWireGeometry.

Definition at line 46 of file CSCSlantedWireGeometry.h.

References CSCSlantedWireGeometry().

                                  {
     return new CSCSlantedWireGeometry(*this);
   }

int CSCSlantedWireGeometry::nearestWire ( const LocalPoint & lp ) const

virtual

The nearest (virtual) wire to a given LocalPoint. Beware that this wire might not exist or be read out!

Implements CSCWireGeometry.

Definition at line 25 of file CSCSlantedWireGeometry.cc.

References cosWireAngle, nint(), sinWireAngle, theWireOffset, CSCWireGeometry::wireSpacing(), PV3DBase< T, PVType, FrameType >::x(), and PV3DBase< T, PVType, FrameType >::y().

                                                                   {
   // Return nearest wire number to input LocalPoint.
   // Beware this may not exist or be read out!
 
   // rotate point to an axis perp. to wires
   float yprime = lp.y() * cosWireAngle - lp.x() * sinWireAngle;
 
   // climb the ladder
   return 1 + nint( (yprime - theWireOffset) / wireSpacing() );
 } 

float CSCSlantedWireGeometry::wireAngle ( ) const

inlinevirtual

The angle of the wires w.r.t local x axis (in radians)

Implements CSCWireGeometry.

Definition at line 29 of file CSCSlantedWireGeometry.h.

References theWireAngle.

29 { return theWireAngle; }

CSCSlantedWireGeometry::theWireAngle

float theWireAngle

Definition: CSCSlantedWireGeometry.h:51

float CSCSlantedWireGeometry::yOfWire	(	float	wire,
		float	x = `0.`
	)		const

virtual

Local y of a given wire 'number' (float) at given x

Implements CSCWireGeometry.

Definition at line 37 of file CSCSlantedWireGeometry.cc.

References cosWireAngle, sinWireAngle, theWireOffset, and CSCWireGeometry::wireSpacing().

                                                                {
   // Return local y of given wire, at given x
 
   // y in rotated frame with y axis perpendicular to wires...
   float yprime = theWireOffset + (wire-1.) * wireSpacing();
   // then y in usual (unrotated!) local xy frame...
   return ( yprime + x*sinWireAngle )/cosWireAngle;
 }