---

CSCSlantedWireGeometry Class Reference

A concrete CSCWireGeometry in which wires are slanted, i.e. More...

#include <Geometry/CSCGeometry/src/CSCSlantedWireGeometry.h>

Inheritance diagram for CSCSlantedWireGeometry:

List of all members.

Public Member Functions
CSCWireGeometry *	clone () const
	Clone to handle correct copy of component objects referenced by base class pointer.
	CSCSlantedWireGeometry (double wireSpacing, double yOfFirstWire, double narrow, double wide, double length, float wireAngle)
	Constructor from wire spacing and wire angle.
int	nearestWire (const LocalPoint &lp) const
	The nearest (virtual) wire to a given LocalPoint.
float	wireAngle () const
	The angle of the wires w.r.t local x axis (in radians).
float	yOfWire (float wire, float x=0.) const
	Local y of a given wire 'number' (float) at given x.
virtual	~CSCSlantedWireGeometry ()
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

(

)

[inline, virtual]

Definition at line 17 of file CSCSlantedWireGeometry.h.

{}

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("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 [inline, virtual]

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 [inline, virtual]

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.

{ return theWireAngle; }

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;
}

---

Member Data Documentation

float CSCSlantedWireGeometry::cosWireAngle [private]

Definition at line 52 of file CSCSlantedWireGeometry.h.

Referenced by CSCSlantedWireGeometry(), nearestWire(), and yOfWire().

float CSCSlantedWireGeometry::sinWireAngle [private]

Definition at line 53 of file CSCSlantedWireGeometry.h.

Referenced by CSCSlantedWireGeometry(), nearestWire(), and yOfWire().

float CSCSlantedWireGeometry::theWireAngle [private]

Definition at line 51 of file CSCSlantedWireGeometry.h.

Referenced by wireAngle().

float CSCSlantedWireGeometry::theWireOffset [private]

Definition at line 54 of file CSCSlantedWireGeometry.h.

Referenced by CSCSlantedWireGeometry(), nearestWire(), and yOfWire().

---

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

• Geometry/CSCGeometry/src/CSCSlantedWireGeometry.h
• Geometry/CSCGeometry/src/CSCSlantedWireGeometry.cc

---