FieldMapPlacement Class Reference

Inheritance diagram for FieldMapPlacement:

BLElementField

List of all members.

Public Member Functions

 FieldMapPlacement (BLFieldMap *_map, G4RotationMatrix *rot, G4ThreeVector &pos, G4double &_current, G4double &_gradient, G4double _timeOffset)
void addFieldValue (const G4double point[4], G4double field[6]) const

Private Attributes

BLCoordinateTransform global2local
G4RotationMatrix rotation
G4double * current
G4double * gradient
G4double timeOffset
BLFieldMap * map

Constructor & Destructor Documentation

FieldMapPlacement::FieldMapPlacement ( BLFieldMap *  _map,
G4RotationMatrix *  rot,
G4ThreeVector &  pos,
G4double &  _current,
G4double &  _gradient,
G4double  _timeOffset 
)

References current, BLFieldMap::getBoundingPoint(), BLCoordinateTransform::getGlobal(), BLCoordinateTransform::getRotation(), global2local, gradient, BLCoordinateTransform::isRotated(), map, rotation, BLElementField::setGlobalPoint(), and timeOffset.

00210                         : global2local(rot,pos), rotation() 
00211 {
00212         map = _map;
00213         current = &_current;
00214         gradient = &_gradient;
00215         timeOffset = _timeOffset;
00216 
00217         if(global2local.isRotated()) {
00218                 rotation = global2local.getRotation();
00219                 rotation.invert();
00220         }
00221 
00222         // set global bounding box
00223         G4double local[4], global[4];
00224         local[3] = 0.0;
00225         for(int i=0; i<8; ++i) {
00226                 map->getBoundingPoint(i,local);
00227                 global2local.getGlobal(local,global);
00228                 setGlobalPoint(global);
00229         }
00230 }

Member Function Documentation

void FieldMapPlacement::addFieldValue ( const G4double  point[4],
G4double  field[6] 
) const [virtual]

Implements BLElementField.

References B, current, E, BLFieldMap::getFieldValue(), BLCoordinateTransform::getLocal(), global2local, gradient, BLFieldMap::hasB(), BLFieldMap::hasE(), map, rotation, and timeOffset.

00234 {
00235         G4double local[4], thisField[6];
00236 
00237         global2local.getLocal(local,point);
00238 
00239         local[3] -= timeOffset;  // KBB 25aug10 - shift time back by timeOffset
00240 
00241         map->getFieldValue(local,thisField,*current,*gradient);
00242 
00243         if(map->hasB()) {
00244                 G4ThreeVector B(thisField[0],thisField[1],thisField[2]);
00245                 B = rotation * B;
00246                 field[0] += B[0];
00247                 field[1] += B[1];
00248                 field[2] += B[2];
00249         }
00250 
00251         if(map->hasE()) {
00252                 G4ThreeVector E(thisField[3],thisField[4],thisField[5]);
00253                 E = rotation * E;
00254                 field[3] += E[0];
00255                 field[4] += E[1];
00256                 field[5] += E[2];
00257         }
00258 }

Member Data Documentation

BLCoordinateTransform FieldMapPlacement::global2local [private]

Referenced by addFieldValue(), and FieldMapPlacement().

G4RotationMatrix FieldMapPlacement::rotation [private]

Referenced by addFieldValue(), and FieldMapPlacement().

G4double* FieldMapPlacement::current [private]

Referenced by addFieldValue(), and FieldMapPlacement().

G4double* FieldMapPlacement::gradient [private]

Referenced by addFieldValue(), and FieldMapPlacement().

G4double FieldMapPlacement::timeOffset [private]

Referenced by addFieldValue(), and FieldMapPlacement().

BLFieldMap* FieldMapPlacement::map [private]

Referenced by addFieldValue(), and FieldMapPlacement().

The documentation for this class was generated from the following file:
g4beamline