Struct Acts::AtlasStepper::State¶
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struct Acts::AtlasStepper::State
Nested State struct for the local caching.
Public Functions
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State() = delete
Default constructor - deleted.
Constructor.
- Template Parameters
Type – of TrackParameters
- Parameters
gctx – [in] The geometry contex tof this call
fieldCacheIn – [in] The magnetic field cache for this call
pars – [in] Input parameters
ndir – [in] The navigation direction w.r.t. parameters
ssize – [in] the steps size limitation
stolerance – [in] is the stepping tolerance
Public Members
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Covariance cov = Covariance::Zero()
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const Covariance *covariance
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bool covTransport = false
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bool debug = false
Debug output the string where debug messages are stored (optionally)
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size_t debugMsgWidth = 50
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size_t debugPfxWidth = 30
buffer & formatting for consistent output
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std::string debugString = ""
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Vector3 field
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MagneticFieldProvider::Cache fieldCache
It caches the current magnetic field cell and stays (and interpolates) within as long as this is valid.
See step() code for details.
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std::reference_wrapper<const GeometryContext> geoContext
Cache the geometry context.
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double jacobian[eBoundSize * eBoundSize]
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double maxPathLength
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bool mcondition
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bool needgradient
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bool newfield
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double parameters[eBoundSize] = {0., 0., 0., 0., 0., 0.}
Storage pattern of pVector /dL0 /dL1 /dPhi /dThe /dCM /dT X ->P[0] dX / P[ 8] P[16] P[24] P[32] P[40] P[48] Y ->P[1] dY / P[ 9] P[17] P[25] P[33] P[41] P[49] Z ->P[2] dZ / P[10] P[18] P[26] P[34] P[42] P[50] T ->P[3] dT/ P[11] P[19] P[27] P[35] P[43] P[51] Ax ->P[4] dAx/ P[12] P[20] P[28] P[36] P[44] P[52] Ay ->P[5] dAy/ P[13] P[21] P[29] P[37] P[45] P[53] Az ->P[6] dAz/ P[14] P[22] P[30] P[38] P[46] P[54] CM ->P[7] dCM/ P[15] P[23] P[31] P[39] P[47] P[55] Cache: P[56] - P[59].
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double pathAccumulated = 0.
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double previousStepSize = 0.
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std::array<double, 60> pVector
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bool state_ready = false
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double step
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ConstrainedStep stepSize = std::numeric_limits<double>::max()
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double tolerance = s_onSurfaceTolerance
The tolerance for the stepping.
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bool useJacobian
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State() = delete