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Belle II Software
release-08-01-10
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Belle II Software
release-08-01-10
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A three dimensional limited line represented by its closest approach to the z-axes (reference position ) and its skew parameter. More...
#include <WireLine.h>
Public Member Functions | |
| WireLine () | |
| Default constructor initialising to all members to zero. | |
| WireLine (const Vector3D &forward, const Vector3D &backward, double sagCoeff) | |
| Constuctor for a wire line between forward and backward point. | |
| WireLine | movedBy (const Vector3D &offset) const |
| Returns a copy of the wire line moved by a three dimensional offset. | |
| WireLine | movedBy (const Vector2D &offset) const |
| Returns a copy of the wire line moved by a two dimensional offset. | |
| Vector3D | nominalPos3DAtZ (const double z) const |
| Gives the three dimensional position without wire sag effect of the line at the given z value. | |
| Vector2D | nominalPos2DAtZ (const double z) const |
| Gives the two dimensional position without wire sag effect of the line at the given z value. | |
| Vector3D | sagPos3DAtZ (const double z) const |
| Gives the three dimensional position with wire sag effect of the line at the given z value. | |
| Vector2D | sagPos2DAtZ (const double z) const |
| Gives the two dimensional position with wire sag effect of the line at the given z value. More... | |
| const Vector2D & | nominalMovePerZ () const |
| Gives the positional move in the xy projection per unit z. | |
| Vector2D | sagMovePerZ (const double z) const |
| Gives the two dimensional position with wire sag effect of the line at the given z value. More... | |
| double | nominalDistance (const Vector3D &pos3D) const |
| Calculates the distance of the given point to the wire without wire sag effect. | |
| double | sagDistance (const Vector3D &pos3D) const |
| Calculates the distance of the given point to the wire with wire sag effect. | |
| Vector3D | nominalClosest3D (const Vector3D &point) const |
| Returns the closest approach on the wire without wire sag effect to the give point. | |
| Vector3D | sagClosest3D (const Vector3D &point) const |
| Returns the closest approach on the wire with wire sag effect to the give point. | |
| Vector3D | forward3D () const |
| Gives the position of the forward point. | |
| Vector2D | forward2D () const |
| Gives the xy position of the forward point. | |
| Vector3D | backward3D () const |
| Gives the position of the backward point. | |
| Vector2D | backward2D () const |
| Gives the xy position of the backward point. | |
| Vector3D | wireVector () const |
| Getter for the vector from backward to the forward position. | |
| double | forwardZ () const |
| Gives the forward z coodinate. | |
| double | backwardZ () const |
| Gives the backward z coodinate. | |
| double | deltaZ () const |
| Returns the difference between forward and backward z. | |
| double | outOfZBoundsFactor (double z) const |
| Returns the amount how much the given z position is outside the bounds in units of the wire length. | |
| double | forwardPhi () const |
| Gives the forward azimuth angle. | |
| double | backwardPhi () const |
| Gives the backward azimuth angle. | |
| double | forwardCylindricalR () const |
| Gives the cylindrical radius of the forward position. | |
| double | backwardCylindricalR () const |
| Gives the cylindrical radius of the backward position. | |
| double | forwardPhiToRef () const |
| Gives the azimuth angle of the forward position relative to the reference position. | |
| double | backwardPhiToRef () const |
| Gives the azimuth angle of the backward position relative to the reference position. | |
| double | backwardToForwardAngle () const |
| Gives the azimuth angle difference from backward to forward position. | |
| double | tanLambda () const |
| Returns the nominal tan lambda of the line. Also know as dz / ds. | |
| double | lambda () const |
| Returns the nominal lambda angle of the line. | |
| double | tanTheta () const |
| Returns the tangent of the opening angle between tangential vector and the z axes Also know as ds / dz. | |
| double | theta () const |
| Returns the nominal opening angle between tangential vector and the z axes. | |
| double | nominalPerigeeZ () const |
| Returns the z coordinate of the point of nominal closest approach to the z axes. | |
| Vector3D | nominalPerigee3D () const |
| Returns the point of nominal closest approach to the z axes. | |
| Vector2D | nominalPerigee2D () const |
| Returns the point of nominal closest approach to the z axes. | |
| double | refX () const |
| Returns the the x coordinate of the reference point. | |
| double | refY () const |
| Returns the the y coordinate of the reference point. | |
| double | refZ () const |
| Returns the the z coordinate of the reference point. | |
| double | refCylindricalRSquared () const |
| Returns the cylindrical radius of the reference position. | |
| const Vector2D & | refPos2D () const |
| Returns the xy vector of the reference position. | |
| const Vector3D & | refPos3D () const |
| Returns the reference position. | |
| double | sagCoeff () const |
| Returns the wire sag coefficient due to gravity. | |
Private Attributes | |
| Vector3D | m_refPos3D |
| Memory for the reference postion. | |
| Vector2D | m_nominalMovePerZ |
| Memory for the nominal movement of the xy position per z unit off the reference. | |
| double | m_forwardZ = 0.0 |
| Memory for the forward end z coordinate. | |
| double | m_backwardZ = 0.0 |
| Memory for the backward end z coordinate. | |
| double | m_sagCoeff = 0.0 |
| Memory for the wire sag coeffiecent. | |
A three dimensional limited line represented by its closest approach to the z-axes (reference position ) and its skew parameter.
The representation is only suitable for lines out of the xy plane. The endpoints are stored encoded by their z position. The end point with the higher z value is called forward, the one with the smaller is called backward. This class is mainly used to descripe the cdc wires with as few parameters as possible and simplifies the retrival of the two dimensional track reference position, which is taken at the closest approach to the beam z-axes.
A three dimensional limited line
Definition at line 31 of file WireLine.h.
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inline |
Gives the two dimensional position with wire sag effect of the line at the given z value.
Efficient version without divisions
Definition at line 75 of file WireLine.h.
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inline |
Gives the two dimensional position with wire sag effect of the line at the given z value.
Efficient version without divisions
Definition at line 60 of file WireLine.h.
1.9.1