// helper method to get the closest daughter DetElement to the position starting from the given DetElement
DetElement IDDecoder::getClosestDaughter(const DetElement& det, const Position& position) {
DetElement result;
// check if we have a shape and see if we are inside
if (det.volume().isValid() and det.volume().solid().isValid()) {
double globalPosition[3] = { position.x(), position.y(), position.z() };
double localPosition[3] = { 0., 0., 0. };
det.worldTransformation().MasterToLocal(globalPosition, localPosition);
if (det.volume().solid()->Contains(localPosition)) {
result = det;
} else {
// assuming that any daughter shape would be inside this shape
return DetElement();
}
}
const DetElement::Children& children = det.children();
DetElement::Children::const_iterator it = children.begin();
while (it != children.end()) {
DetElement daughterDet = getClosestDaughter(it->second, position);
if (daughterDet.isValid()) {
result = daughterDet;
break;
}
++it;
}
return result;
}
void Installer<UserData>::install(DetElement component, PlacedVolume pv) {
Volume comp_vol = pv.volume();
if ( comp_vol.isSensitive() ) {
Volume mod_vol = parentVolume(component);
DD4hep::Geometry::PolyhedraRegular comp_shape(comp_vol.solid()), mod_shape(mod_vol.solid());
if ( !comp_shape.isValid() || !mod_shape.isValid() ) {
invalidInstaller("Components and/or modules are not Trapezoid -- invalid shapes");
}
else if ( !handleUsingCache(component,comp_vol) ) {
DetElement par = component.parent();
const TGeoHMatrix& m = par.worldTransformation();
double dz = m.GetTranslation()[2];
const double* trans = placementTranslation(component);
double half_mod_thickness = (mod_shape->GetZ(1)-mod_shape->GetZ(0))/2.0;
double half_comp_thickness = (comp_shape->GetZ(1)-comp_shape->GetZ(0))/2.0;
double si_position = trans[2]+half_mod_thickness;
double outer_thickness = half_mod_thickness - si_position;
double inner_thickness = half_mod_thickness + si_position;
Vector3D u(1.,0.,0.), v(0.,1.,0.), n(0.,0.,1.), o(100.,100.,0.);
std::cout << " Module: " << mod_shape.toString() << std::endl;
std::cout << " Component: " << comp_shape.toString() << std::endl;
std::cout << "dz:" << dz << " Si-pos:" << si_position
<< " Mod-thickness:" << half_mod_thickness
<< " Comp-thickness:" << half_comp_thickness
<< std::endl;
VolPlane surf(comp_vol,Type(Type::Sensitive,Type::Measurement1D),
inner_thickness, outer_thickness, u, v, n, o);
addSurface(component,surf);
}
}
}
static long cache(DetElement de) {
const DetElement::Children& c = de.children();
de.worldTransformation();
de.parentTransformation();
de.placementPath();
de.path();
for (DetElement::Children::const_iterator i = c.begin(); i != c.end(); ++i)
cache((*i).second);
return 1;
}
/**
* Returns the global position from a given cell ID
*/
Position IDDecoder::position(const CellID& cell) const {
double l[3];
double g[3];
DetElement det = this->detectorElement(cell);
Position local = this->findReadout(det).segmentation().position(cell);
local.GetCoordinates(l);
// FIXME: direct lookup of transformations seems to be broken
//const TGeoMatrix& localToGlobal = _volumeManager.worldTransformation(cell);
const TGeoMatrix& localToGlobal = det.worldTransformation();
localToGlobal.LocalToMaster(l, g);
return Position(g[0], g[1], g[2]);
}
/**
* Returns the cell ID from the local position in the given volume ID.
*/
CellID IDDecoder::cellIDFromLocal(const Position& local, const VolumeID volID) const {
double l[3];
double g[3];
local.GetCoordinates(l);
// FIXME: direct lookup of transformations seems to be broken
//const TGeoMatrix& localToGlobal = _volumeManager.worldTransformation(volID);
DetElement det = this->detectorElement(volID);
const TGeoMatrix& localToGlobal = det.worldTransformation();
localToGlobal.LocalToMaster(l, g);
Position global(g[0], g[1], g[2]);
return this->findReadout(det).segmentation().cellID(local, global, volID);
}
