BDSIM
BDSIM is a Geant4 extension toolkit for simulation of particle transport in accelerator beamlines.
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BDSFieldEInterpolated1D.cc
1/*
2Beam Delivery Simulation (BDSIM) Copyright (C) BDSIM Collaboration, 2001 - 2026.
3
4This file is part of BDSIM.
5
6BDSIM is free software: you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published
8by the Free Software Foundation version 3 of the License.
9
10BDSIM is distributed in the hope that it will be useful, but
11WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with BDSIM. If not, see <http://www.gnu.org/licenses/>.
17*/
18#include "BDSDimensionType.hh"
19#include "BDSFieldEInterpolated1D.hh"
20#include "BDSInterpolator1D.hh"
21
22#include "G4ThreeVector.hh"
23
24BDSFieldEInterpolated1D::BDSFieldEInterpolated1D(BDSInterpolator1D* interpolatorIn,
25 const G4Transform3D& offset,
26 G4double eScalingIn):
27 BDSFieldEInterpolated(interpolatorIn, offset, eScalingIn),
28 interpolator(interpolatorIn),
29 dimensionIndex((interpolatorIn->FirstDimension()).underlying()),
30 time((interpolatorIn->FirstDimension()).underlying() > 2)
31{;}
32
33BDSFieldEInterpolated1D::~BDSFieldEInterpolated1D()
34{
35 delete interpolator;
36}
37
38G4ThreeVector BDSFieldEInterpolated1D::GetField(const G4ThreeVector& position,
39 const G4double t) const
40{
41 G4double coordinate = 0;
42 if (time)
43 {coordinate = t;}
44 else
45 {coordinate = position[dimensionIndex];}
46 return interpolator->GetInterpolatedValue(coordinate) * EScaling();
47}
virtual G4ThreeVector GetField(const G4ThreeVector &position, const G4double t=0) const
Return the interpolated field value at a given point.
const G4bool time
Cache of whether to use time coordinate.
const G4int dimensionIndex
Integer index to dimension to use.
BDSInterpolator1D * interpolator
Interpolator the field is based on.
Class to provide scaling and a base class pointer for interpolator fields.
Interface for all 1D interpolators.
G4ThreeVector GetInterpolatedValue(G4double x) const
Public interface to a 1D interpolator. Returns Geant4 type as that's what will be needed.