Struct ActsFatras::PlanarSurfaceDrift¶
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struct ActsFatras::PlanarSurfaceDrift
The PlanarSurfaceDrift takes an intersection in the nominal surface and projects the ends into the readout surface, which can be at : -1, 0, 1.
A Lorentz drift angle can be applied.
Public Functions
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Segment2D toReadout(const Acts::GeometryContext &gctx, const Acts::Surface &surface, double thickness, const Acts::Vector3 &pos, const Acts::Vector3 &dir, const Acts::Vector3 &driftdir) const
Drift the full 3D segment onto a surface 2D readout plane.
Note
a drift direction of (0,0,0) is drift to central plane any other a drift direction with driftDir.z() != 0. will result on a readout on either + 0.5*depletion or -0.5*depletion
Note
without masking
- Parameters
gctx – The current Geometry context
surface – The nominal intersection surface
thickness – The emulated module/depletion thickness
pos – The position in global coordinates
dir – The direciton in global coordinates
driftdir – The drift direction in local (surface) coordinates
- Returns
a Segment on the readout surface
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Segment2D toReadout(const Acts::GeometryContext &gctx, const Acts::Surface &surface, double thickness, const Acts::Vector3 &pos, const Acts::Vector3 &dir, const Acts::Vector3 &driftdir) const