884 lines
21 KiB
C++
884 lines
21 KiB
C++
// This code implementation is the intellectual property of
|
|
// the GEANT4 collaboration.
|
|
//
|
|
// By copying, distributing or modifying the Program (or any work
|
|
// based on the Program) you indicate your acceptance of this statement,
|
|
// and all its terms.
|
|
//
|
|
// $Id: G4ReplicaNavigation.cc,v 1.4 2000/11/20 19:06:00 gcosmo Exp $
|
|
// GEANT4 tag $Name: geant4-03-00 $
|
|
//
|
|
//
|
|
// class G4REplicaNavigation Implementation
|
|
|
|
#include "G4ReplicaNavigation.hh"
|
|
|
|
#include <assert.h>
|
|
|
|
G4ReplicaNavigation::G4ReplicaNavigation()
|
|
{
|
|
}
|
|
|
|
EInside G4ReplicaNavigation::Inside(const G4VPhysicalVolume *pVol,
|
|
const G4int replicaNo,
|
|
const G4ThreeVector &localPoint) const
|
|
{
|
|
EInside in=kOutside;
|
|
// Replication data
|
|
EAxis axis;
|
|
G4int nReplicas;
|
|
G4double width,offset;
|
|
G4bool consuming;
|
|
|
|
G4double coord,rad2,rmin,tolRMax2,rmax,tolRMin2;
|
|
|
|
pVol->GetReplicationData(axis,nReplicas,width,offset,consuming);
|
|
assert(consuming);
|
|
|
|
switch (axis)
|
|
{
|
|
case kXAxis:
|
|
case kYAxis:
|
|
case kZAxis:
|
|
coord=fabs(localPoint(axis))-width*0.5;
|
|
if (coord<=-kCarTolerance*0.5)
|
|
{
|
|
in=kInside;
|
|
}
|
|
else if (coord<=kCarTolerance*0.5)
|
|
{
|
|
in=kSurface;
|
|
}
|
|
break;
|
|
case kPhi:
|
|
if (localPoint.y()||localPoint.x())
|
|
{
|
|
coord=fabs(atan2(localPoint.y(),localPoint.x()))-width*0.5;
|
|
if (coord<=-kAngTolerance*0.5)
|
|
{
|
|
in=kInside;
|
|
}
|
|
else if (coord<=kAngTolerance*0.5)
|
|
{
|
|
in=kSurface;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
in=kSurface;
|
|
}
|
|
break;
|
|
case kRho:
|
|
rad2=localPoint.perp2();
|
|
rmax=(replicaNo+1)*width+offset;
|
|
|
|
tolRMax2=rmax-kRadTolerance*0.5;
|
|
tolRMax2*=tolRMax2;
|
|
if (rad2>tolRMax2)
|
|
{
|
|
tolRMax2=rmax+kRadTolerance*0.5;
|
|
tolRMax2*=tolRMax2;
|
|
if (rad2<=tolRMax2)
|
|
{
|
|
in=kSurface;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Known to be inside outer radius
|
|
if (replicaNo||offset)
|
|
{
|
|
rmin=rmax-width;
|
|
tolRMin2=rmin-kRadTolerance*0.5;
|
|
tolRMin2*=tolRMin2;
|
|
if (rad2>tolRMin2)
|
|
{
|
|
tolRMin2=rmin+kRadTolerance*0.5;
|
|
tolRMin2*=tolRMin2;
|
|
if (rad2>=tolRMin2)
|
|
{
|
|
in=kInside;
|
|
}
|
|
else
|
|
{
|
|
in=kSurface;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
in=kInside;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
G4Exception("Unknown axis in G4ReplicaNavigation::Inside");
|
|
break;
|
|
}
|
|
return in;
|
|
}
|
|
|
|
G4double G4ReplicaNavigation::DistanceToOut(const G4VPhysicalVolume *pVol,
|
|
const G4int replicaNo,
|
|
const G4ThreeVector &localPoint) const
|
|
{
|
|
// Replication data
|
|
EAxis axis;
|
|
G4int nReplicas;
|
|
G4double width,offset;
|
|
G4bool consuming;
|
|
|
|
G4double safety=0.;
|
|
G4double safe1,safe2;
|
|
G4double coord,rho,rmin,rmax;
|
|
|
|
pVol->GetReplicationData(axis,nReplicas,width,offset,consuming);
|
|
assert(consuming);
|
|
switch(axis)
|
|
{
|
|
case kXAxis:
|
|
case kYAxis:
|
|
case kZAxis:
|
|
coord=localPoint(axis);
|
|
safe1=width*0.5-coord;
|
|
safe2=width*0.5+coord;
|
|
safety=(safe1<=safe2) ? safe1 : safe2;
|
|
break;
|
|
case kPhi:
|
|
if (localPoint.y()<=0)
|
|
{
|
|
safety=localPoint.x()*sin(width*0.5)+localPoint.y()*cos(width*0.5);
|
|
}
|
|
else
|
|
{
|
|
safety=localPoint.x()*sin(width*0.5)-localPoint.y()*cos(width*0.5);
|
|
}
|
|
break;
|
|
case kRho:
|
|
rho=localPoint.perp();
|
|
rmax=width*(replicaNo+1)+offset;
|
|
if (replicaNo||offset)
|
|
{
|
|
rmin=rmax-width;
|
|
safe1=rho-rmin;
|
|
safe2=rmax-rho;
|
|
safety=(safe1<=safe2) ? safe1 : safe2;
|
|
}
|
|
else
|
|
{
|
|
safety=rmax-rho;
|
|
}
|
|
break;
|
|
default:
|
|
G4Exception("Unknown axis in G4ReplicaNavigation::DistanceToOut");
|
|
break;
|
|
}
|
|
return (safety >= kCarTolerance) ? safety : 0;
|
|
}
|
|
|
|
G4double G4ReplicaNavigation::DistanceToOut(const G4VPhysicalVolume *pVol,
|
|
const G4int replicaNo,
|
|
const G4ThreeVector &localPoint,
|
|
const G4ThreeVector &localDirection) const
|
|
{
|
|
// Replication data
|
|
EAxis axis;
|
|
G4int nReplicas;
|
|
G4double width,offset;
|
|
G4bool consuming;
|
|
|
|
G4double Dist=kInfinity;
|
|
G4double coord,Comp,lindist;
|
|
|
|
pVol->GetReplicationData(axis,nReplicas,width,offset,consuming);
|
|
assert(consuming);
|
|
switch(axis)
|
|
{
|
|
case kXAxis:
|
|
case kYAxis:
|
|
case kZAxis:
|
|
coord=localPoint(axis);
|
|
Comp=localDirection(axis);
|
|
|
|
if (Comp>0)
|
|
{
|
|
lindist=width*0.5-coord;
|
|
Dist= (lindist>kCarTolerance*0.5) ? lindist/Comp : 0;
|
|
}
|
|
else if (Comp<0)
|
|
{
|
|
lindist=width*0.5+coord;
|
|
Dist= (lindist>kCarTolerance*0.5) ? -lindist/Comp : 0;
|
|
}
|
|
else
|
|
{
|
|
Dist=kInfinity;
|
|
}
|
|
break;
|
|
case kPhi:
|
|
Dist=DistanceToOutPhi(localPoint,localDirection,width);
|
|
break;
|
|
case kRho:
|
|
Dist=DistanceToOutRad(localPoint,localDirection,width,offset,replicaNo);
|
|
break;
|
|
default:
|
|
G4Exception("Unknown axis in G4ReplicaNavigation::DistanceToOut");
|
|
break;
|
|
}
|
|
return Dist;
|
|
}
|
|
|
|
|
|
G4double G4ReplicaNavigation::DistanceToOutPhi(const G4ThreeVector &localPoint,
|
|
const G4ThreeVector &localDirection,
|
|
const G4double width) const
|
|
{
|
|
// Phi Intersection
|
|
// NOTE: width<=M_PI by definition
|
|
|
|
G4double sinSPhi,cosSPhi;
|
|
G4double pDistS,pDistE,compS,compE,Dist,dist2,yi;
|
|
if (localPoint.x()||localPoint.y())
|
|
{
|
|
sinSPhi=sin(-width*0.5); // SIN of starting phi plane
|
|
cosSPhi=cos(width*0.5); // COS of starting phi plane
|
|
// pDist -ve when inside
|
|
pDistS=localPoint.x()*sinSPhi-localPoint.y()*cosSPhi;
|
|
pDistE=localPoint.x()*sinSPhi+localPoint.y()*cosSPhi;
|
|
// Comp -ve when in direction of outwards normal
|
|
compS=-sinSPhi*localDirection.x()+cosSPhi*localDirection.y();
|
|
compE=-sinSPhi*localDirection.x()-cosSPhi*localDirection.y();
|
|
|
|
if (pDistS<=0&&pDistE<=0)
|
|
{
|
|
// Inside both phi *full* planes
|
|
if (compS<0)
|
|
{
|
|
dist2=pDistS/compS;
|
|
yi=localPoint.y()+dist2*localDirection.y();
|
|
// Check intersecting with correct half-plane (no -> no intersect)
|
|
if (yi<=0)
|
|
{
|
|
Dist=(pDistS<=-kCarTolerance*0.5) ? dist2 : 0;
|
|
}
|
|
else
|
|
{
|
|
Dist=kInfinity;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Dist=kInfinity;
|
|
}
|
|
|
|
if (compE<0)
|
|
{
|
|
dist2=pDistE/compE;
|
|
// Only check further if < starting phi intersection
|
|
if (dist2<Dist)
|
|
{
|
|
yi=localPoint.y()+dist2*localDirection.y();
|
|
// Check intersecting with correct half-plane
|
|
if (yi>=0)
|
|
{
|
|
// Leaving via ending phi
|
|
Dist=(pDistE<=-kCarTolerance*0.5) ? dist2 : 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
else if (pDistS>=0&&pDistE>=0)
|
|
{
|
|
// Outside both *full* phi planes
|
|
// if towards both >=0 then once inside will remain inside
|
|
Dist= (compS>=0&&compE>=0) ? kInfinity : 0;
|
|
}
|
|
else if (pDistS>0&&pDistE<0)
|
|
{
|
|
// Outside full starting plane, inside full ending plane
|
|
if (compS>=0)
|
|
{
|
|
if (compE<0)
|
|
{
|
|
dist2=pDistE/compE;
|
|
yi=localPoint.y()+dist2*localDirection.y();
|
|
// Check intersection in correct half-plane (if not -> remain in extent)
|
|
Dist=(yi>0) ? dist2 : kInfinity;
|
|
}
|
|
else Dist=kInfinity;
|
|
}
|
|
else
|
|
{
|
|
// leaving immediately by starting phi
|
|
Dist=0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Must be pDistS<0&&pDistE>0
|
|
// Inside full starting plane, outside full ending plane
|
|
if (compE>=0)
|
|
{
|
|
if (compS<0)
|
|
{
|
|
|
|
dist2=pDistS/compS;
|
|
yi=localPoint.y()+dist2*localDirection.y();
|
|
// Check intersection in correct half-plane (if not -> remain in extent)
|
|
Dist=(yi<0) ? dist2 : kInfinity;
|
|
}
|
|
else
|
|
{
|
|
Dist=kInfinity;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// leaving immediately by ending phi
|
|
Dist=0;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// On z axis + travel not || to z axis -> use direction vector
|
|
Dist = (fabs(localDirection.phi())<=width*0.5) ? kInfinity : 0;
|
|
}
|
|
|
|
return Dist;
|
|
}
|
|
|
|
G4double G4ReplicaNavigation::DistanceToOutRad(const G4ThreeVector &localPoint,
|
|
const G4ThreeVector &localDirection,
|
|
const G4double width,
|
|
const G4double offset,
|
|
const G4int replicaNo) const
|
|
{
|
|
|
|
G4double rmin,rmax,t1,t2,t3,deltaR;
|
|
G4double b,c,d2,sr;
|
|
|
|
//
|
|
// Radial Intersections
|
|
//
|
|
|
|
// Find intersction with cylinders at rmax/rmin
|
|
// Intersection point (xi,yi,zi) on line
|
|
// x=localPoint.x+t*localDirection.x etc.
|
|
//
|
|
// Intersects with x^2+y^2=R^2
|
|
//
|
|
// Hence (localDirection.x^2+localDirection.y^2)t^2+
|
|
// 2t(localPoint.x*localDirection.x+localPoint.y*localDirection.y)+
|
|
// localPoint.x^2+localPoint.y^2-R^2=0
|
|
//
|
|
// t1 t2 t3
|
|
|
|
rmin=replicaNo*width+offset;
|
|
rmax=(replicaNo+1)*width+offset;
|
|
|
|
t1=1.0-localDirection.z()*localDirection.z(); // since v normalised
|
|
t2=localPoint.x()*localDirection.x()+localPoint.y()*localDirection.y();
|
|
t3=localPoint.x()*localPoint.x()+localPoint.y()*localPoint.y();
|
|
|
|
if (t1>0) // Check not parallel
|
|
{
|
|
// Calculate sr, r exit distance
|
|
if (t2>=0)
|
|
{
|
|
// Delta r not negative => leaving via rmax
|
|
deltaR=t3-rmax*rmax;
|
|
// NOTE: Should use rho-rmax<-kRadTolerance*0.5 - [no sqrts for efficiency]
|
|
if (deltaR<-kRadTolerance*0.5)
|
|
{
|
|
b=t2/t1;
|
|
c=deltaR/t1;
|
|
sr=-b+sqrt(b*b-c);
|
|
}
|
|
else
|
|
{
|
|
// On tolerant boundary & heading outwards (or locally perpendicular to)
|
|
// outer radial surface -> leaving immediately
|
|
sr=0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Possible rmin intersection
|
|
if (rmin)
|
|
{
|
|
deltaR=t3-rmin*rmin;
|
|
b=t2/t1;
|
|
c=deltaR/t1;
|
|
d2=b*b-c;
|
|
if (d2>=0)
|
|
{
|
|
// Leaving via rmin
|
|
// NOTE: Should use rho-rmin>kRadTolerance*0.5 - [no sqrts for efficiency]
|
|
sr= (deltaR>kRadTolerance*0.5) ? -b-sqrt(d2) : 0;
|
|
}
|
|
else
|
|
{
|
|
// No rmin intersect -> must be rmax intersect
|
|
deltaR=t3-rmax*rmax;
|
|
c=deltaR/t1;
|
|
sr=-b+sqrt(b*b-c);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// No rmin intersect -> must be rmax intersect
|
|
deltaR=t3-rmax*rmax;
|
|
b=t2/t1;
|
|
c=deltaR/t1;
|
|
sr=-b+sqrt(b*b-c);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
sr=kInfinity;
|
|
}
|
|
return sr;
|
|
}
|
|
|
|
// Setup transformation and transform point into local system
|
|
void G4ReplicaNavigation::ComputeTransformation(const G4int replicaNo,
|
|
G4VPhysicalVolume *pVol,
|
|
G4ThreeVector& point) const
|
|
{
|
|
G4double val,cosv,sinv,tmp;
|
|
// Replication data
|
|
EAxis axis;
|
|
G4int nReplicas;
|
|
G4double width,offset;
|
|
G4bool consuming;
|
|
|
|
pVol->GetReplicationData(axis,nReplicas,width,offset,consuming);
|
|
assert(consuming);
|
|
|
|
switch (axis)
|
|
{
|
|
case kXAxis:
|
|
val=-width*0.5*(nReplicas-1)+width*replicaNo;
|
|
pVol->SetTranslation(G4ThreeVector(val,0,0));
|
|
point.setX(point.x()-val);
|
|
break;
|
|
case kYAxis:
|
|
val=-width*0.5*(nReplicas-1)+width*replicaNo;
|
|
pVol->SetTranslation(G4ThreeVector(0,val,0));
|
|
point.setY(point.y()-val);
|
|
break;
|
|
case kZAxis:
|
|
val=-width*0.5*(nReplicas-1)+width*replicaNo;
|
|
pVol->SetTranslation(G4ThreeVector(0,0,val));
|
|
point.setZ(point.z()-val);
|
|
break;
|
|
case kPhi:
|
|
val=-(offset+width*(replicaNo+0.5));
|
|
SetPhiTransformation(val,pVol);
|
|
cosv=cos(val);
|
|
sinv=sin(val);
|
|
tmp=point.x()*cosv-point.y()*sinv;
|
|
point.setY(point.x()*sinv+point.y()*cosv);
|
|
point.setX(tmp);
|
|
break;
|
|
case kRho:
|
|
// No setup required for radial case
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Setup transformation
|
|
void G4ReplicaNavigation::ComputeTransformation(const G4int replicaNo,
|
|
G4VPhysicalVolume *pVol) const
|
|
{
|
|
G4double val;
|
|
// Replication data
|
|
EAxis axis;
|
|
G4int nReplicas;
|
|
G4double width,offset;
|
|
G4bool consuming;
|
|
|
|
pVol->GetReplicationData(axis,nReplicas,width,offset,consuming);
|
|
assert(consuming);
|
|
|
|
switch (axis)
|
|
{
|
|
case kXAxis:
|
|
val=-width*0.5*(nReplicas-1)+width*replicaNo;
|
|
pVol->SetTranslation(G4ThreeVector(val,0,0));
|
|
break;
|
|
case kYAxis:
|
|
val=-width*0.5*(nReplicas-1)+width*replicaNo;
|
|
pVol->SetTranslation(G4ThreeVector(0,val,0));
|
|
break;
|
|
case kZAxis:
|
|
val=-width*0.5*(nReplicas-1)+width*replicaNo;
|
|
pVol->SetTranslation(G4ThreeVector(0,0,val));
|
|
break;
|
|
case kPhi:
|
|
val=-(offset+width*(replicaNo+0.5));
|
|
SetPhiTransformation(val);
|
|
break;
|
|
case kRho:
|
|
// No setup required for radial case
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
G4double G4ReplicaNavigation::ComputeStep(const G4ThreeVector &globalPoint,
|
|
const G4ThreeVector &globalDirection,
|
|
const G4ThreeVector &localPoint,
|
|
const G4ThreeVector &localDirection,
|
|
const G4double currentProposedStepLength,
|
|
G4double &newSafety,
|
|
G4NavigationHistory &history,
|
|
G4bool &validExitNormal,
|
|
G4ThreeVector &exitNormal,
|
|
G4bool &exiting,
|
|
G4bool &entering,
|
|
G4VPhysicalVolume *(*pBlockedPhysical),
|
|
G4int &blockedReplicaNo)
|
|
{
|
|
G4VPhysicalVolume *repPhysical,*motherPhysical;
|
|
G4VPhysicalVolume *samplePhysical,*blockedExitedVol=0;
|
|
G4LogicalVolume *repLogical;
|
|
G4VSolid *motherSolid;
|
|
G4ThreeVector repPoint,repDirection,sampleDirection;
|
|
G4double ourStep=currentProposedStepLength;
|
|
G4double ourSafety=kInfinity;
|
|
G4double sampleStep,sampleSafety;
|
|
G4int localNoDaughters,sampleNo;
|
|
G4int depth;
|
|
|
|
// Exiting normal optimisation
|
|
if (exiting&&validExitNormal)
|
|
{
|
|
if (localDirection.dot(exitNormal)>=kMinExitingNormalCosine)
|
|
{
|
|
// Block exited daughter volume
|
|
blockedExitedVol=*pBlockedPhysical;
|
|
ourSafety=0;
|
|
}
|
|
}
|
|
exiting=false;
|
|
entering=false;
|
|
|
|
repPhysical=history.GetTopVolume();
|
|
repLogical=repPhysical->GetLogicalVolume();
|
|
|
|
//
|
|
// Compute intersection with replica boundaries & replica safety
|
|
//
|
|
|
|
sampleSafety=DistanceToOut(history.GetTopVolume(),
|
|
history.GetTopReplicaNo(),
|
|
localPoint);
|
|
|
|
if (sampleSafety<ourSafety)
|
|
{
|
|
ourSafety=sampleSafety;
|
|
}
|
|
if (sampleSafety<ourStep)
|
|
{
|
|
sampleStep=DistanceToOut(history.GetTopVolume(),
|
|
history.GetTopReplicaNo(),
|
|
localPoint,
|
|
localDirection);
|
|
if (sampleStep<ourStep)
|
|
{
|
|
if (sampleStep != 0)
|
|
ourStep=sampleStep;
|
|
exiting=true;
|
|
validExitNormal=false;
|
|
}
|
|
}
|
|
|
|
depth=history.GetDepth()-1;
|
|
while (history.GetVolumeType(depth)==kReplica)
|
|
{
|
|
repPoint=history.GetTransform(depth).TransformPoint(globalPoint);
|
|
sampleSafety=DistanceToOut(history.GetVolume(depth),
|
|
history.GetReplicaNo(depth),
|
|
repPoint);
|
|
if (sampleSafety<ourSafety)
|
|
{
|
|
ourSafety=sampleSafety;
|
|
}
|
|
if (sampleSafety<ourStep)
|
|
{
|
|
sampleStep=DistanceToOut(history.GetVolume(depth),
|
|
history.GetReplicaNo(depth),
|
|
repPoint,
|
|
history.GetTransform(depth).TransformAxis(globalDirection));
|
|
if (sampleStep<ourStep)
|
|
{
|
|
ourStep=sampleStep;
|
|
exiting=true;
|
|
validExitNormal=false;
|
|
}
|
|
}
|
|
depth--;
|
|
}
|
|
|
|
// Compute mother safety & intersection
|
|
repPoint=history.GetTransform(depth).TransformPoint(globalPoint);
|
|
motherPhysical=history.GetVolume(depth);
|
|
motherSolid=motherPhysical->GetLogicalVolume()->GetSolid();
|
|
sampleSafety=motherSolid->DistanceToOut(repPoint);
|
|
|
|
if (sampleSafety<ourSafety)
|
|
{
|
|
ourSafety=sampleSafety;
|
|
}
|
|
|
|
// May need precision protection
|
|
if (sampleSafety<=ourStep)
|
|
{
|
|
repDirection=history.GetTransform(depth).TransformAxis(globalDirection);
|
|
sampleStep=motherSolid
|
|
->DistanceToOut(repPoint,
|
|
repDirection,
|
|
true,
|
|
&validExitNormal,
|
|
&exitNormal);
|
|
if (sampleStep<=ourStep)
|
|
{
|
|
ourStep=sampleStep;
|
|
exiting=true;
|
|
if (validExitNormal)
|
|
{
|
|
const G4RotationMatrix *rot=motherPhysical->GetRotation();
|
|
if (rot)
|
|
{
|
|
exitNormal*=rot->inverse();
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
validExitNormal=false;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Compute daughter safeties & intersections
|
|
//
|
|
localNoDaughters=repLogical->GetNoDaughters();
|
|
for (sampleNo=localNoDaughters-1;sampleNo>=0;sampleNo--)
|
|
{
|
|
samplePhysical=repLogical->GetDaughter(sampleNo);
|
|
if (samplePhysical!=blockedExitedVol)
|
|
{
|
|
samplePhysical->Setup(repPhysical);
|
|
G4AffineTransform sampleTf(samplePhysical->GetRotation(),
|
|
samplePhysical->GetTranslation());
|
|
sampleTf.Invert();
|
|
const G4ThreeVector samplePoint=sampleTf.TransformPoint(localPoint);
|
|
const G4VSolid *sampleSolid=samplePhysical
|
|
->GetLogicalVolume()
|
|
->GetSolid();
|
|
const G4double sampleSafety=sampleSolid
|
|
->DistanceToIn(samplePoint);
|
|
if (sampleSafety<ourSafety)
|
|
{
|
|
ourSafety=sampleSafety;
|
|
}
|
|
if (sampleSafety<=ourStep)
|
|
{
|
|
sampleDirection=sampleTf.TransformAxis(localDirection);
|
|
const G4double sampleStep=sampleSolid
|
|
->DistanceToIn(samplePoint,
|
|
sampleDirection);
|
|
if (sampleStep<=ourStep)
|
|
{
|
|
ourStep=sampleStep;
|
|
entering=true;
|
|
exiting=false;
|
|
*pBlockedPhysical=samplePhysical;
|
|
blockedReplicaNo=-1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
newSafety=ourSafety;
|
|
return ourStep;
|
|
}
|
|
|
|
// Compute the isotropic distance to current volume's boundaries and
|
|
// to daughter volumes.
|
|
//
|
|
|
|
G4double G4ReplicaNavigation::ComputeSafety(const G4ThreeVector &globalPoint,
|
|
const G4ThreeVector &localPoint,
|
|
G4NavigationHistory &history,
|
|
// const G4NavigationHistory &history, // -> NON-CONST
|
|
const G4double pProposedMaxLength )
|
|
{
|
|
G4VPhysicalVolume *repPhysical,*motherPhysical;
|
|
G4VPhysicalVolume *samplePhysical,*blockedExitedVol=0;
|
|
G4LogicalVolume *repLogical;
|
|
G4VSolid *motherSolid;
|
|
G4ThreeVector repPoint;
|
|
G4double ourSafety=kInfinity;
|
|
G4double sampleSafety;
|
|
G4int localNoDaughters,sampleNo;
|
|
G4int depth;
|
|
|
|
repPhysical=history.GetTopVolume();
|
|
repLogical=repPhysical->GetLogicalVolume();
|
|
|
|
//
|
|
// Compute intersection with replica boundaries & replica safety
|
|
//
|
|
|
|
sampleSafety=DistanceToOut(history.GetTopVolume(),
|
|
history.GetTopReplicaNo(),
|
|
localPoint);
|
|
if (sampleSafety<ourSafety)
|
|
{
|
|
ourSafety=sampleSafety;
|
|
}
|
|
|
|
depth=history.GetDepth()-1;
|
|
while (history.GetVolumeType(depth)==kReplica)
|
|
{
|
|
repPoint=history.GetTransform(depth).TransformPoint(globalPoint);
|
|
sampleSafety=DistanceToOut(history.GetVolume(depth),
|
|
history.GetReplicaNo(depth),
|
|
repPoint);
|
|
if (sampleSafety<ourSafety)
|
|
{
|
|
ourSafety=sampleSafety;
|
|
}
|
|
depth--;
|
|
}
|
|
|
|
// Compute mother safety & intersection
|
|
repPoint=history.GetTransform(depth).TransformPoint(globalPoint);
|
|
motherPhysical=history.GetVolume(depth);
|
|
motherSolid=motherPhysical->GetLogicalVolume()->GetSolid();
|
|
sampleSafety=motherSolid->DistanceToOut(repPoint);
|
|
|
|
if (sampleSafety<ourSafety)
|
|
{
|
|
ourSafety=sampleSafety;
|
|
}
|
|
|
|
//
|
|
// Compute daughter safeties & intersections
|
|
//
|
|
localNoDaughters=repLogical->GetNoDaughters();
|
|
for (sampleNo=localNoDaughters-1;sampleNo>=0;sampleNo--)
|
|
{
|
|
samplePhysical=repLogical->GetDaughter(sampleNo);
|
|
if (samplePhysical!=blockedExitedVol)
|
|
{
|
|
samplePhysical->Setup(repPhysical);
|
|
G4AffineTransform sampleTf(samplePhysical->GetRotation(),
|
|
samplePhysical->GetTranslation());
|
|
sampleTf.Invert();
|
|
const G4ThreeVector samplePoint=sampleTf.TransformPoint(localPoint);
|
|
const G4VSolid *sampleSolid=samplePhysical
|
|
->GetLogicalVolume()
|
|
->GetSolid();
|
|
const G4double sampleSafety=sampleSolid
|
|
->DistanceToIn(samplePoint);
|
|
if (sampleSafety<ourSafety)
|
|
{
|
|
ourSafety=sampleSafety;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ourSafety;
|
|
}
|
|
|
|
|
|
|
|
EInside G4ReplicaNavigation::BackLocate(G4NavigationHistory &history,
|
|
const G4ThreeVector &globalPoint,
|
|
G4ThreeVector &localPoint,
|
|
const G4bool &exiting,
|
|
G4bool ¬KnownInside) const
|
|
{
|
|
G4VPhysicalVolume *pNRMother=0;
|
|
G4VSolid *motherSolid;
|
|
G4ThreeVector repPoint,goodPoint;
|
|
G4int mdepth,depth,cdepth;
|
|
EInside insideCode;
|
|
|
|
cdepth=history.GetDepth();
|
|
// Find non replicated mother
|
|
for (mdepth=cdepth-1;mdepth>=0;mdepth--)
|
|
{
|
|
if (history.GetVolumeType(mdepth)!=kReplica)
|
|
{
|
|
pNRMother=history.GetVolume(mdepth);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( pNRMother == 0 )
|
|
{
|
|
// All the tree of mother volumes were Replicas.
|
|
// This is an error, as the World volume must be a Placement
|
|
G4Exception( "G4ReplicaNavigation::BackLocate - World volume must be a Placement" );
|
|
}
|
|
|
|
|
|
motherSolid=pNRMother->GetLogicalVolume()->GetSolid();
|
|
goodPoint=history.GetTransform(mdepth).TransformPoint(globalPoint);
|
|
insideCode=motherSolid->Inside(goodPoint);
|
|
if (insideCode==kOutside||insideCode==kSurface&&exiting)
|
|
{
|
|
// Outside mother -> back up to mother level
|
|
// Locate.. in Navigator will back up one more level
|
|
// localPoint not reqd
|
|
history.BackLevel(cdepth-mdepth);
|
|
// localPoint=goodPoint;
|
|
}
|
|
else
|
|
{
|
|
notKnownInside=false;
|
|
// Still within replications
|
|
// Check down: if on outside stop at this level
|
|
for (depth=mdepth+1;depth<cdepth;depth++)
|
|
{
|
|
repPoint=history.GetTransform(depth).TransformPoint(globalPoint);
|
|
insideCode=Inside(history.GetVolume(depth),
|
|
history.GetReplicaNo(depth),
|
|
repPoint);
|
|
if (insideCode==kOutside||insideCode==kSurface&&exiting)
|
|
{
|
|
localPoint=goodPoint;
|
|
history.BackLevel(cdepth-depth);
|
|
return insideCode;
|
|
}
|
|
else
|
|
{
|
|
goodPoint=repPoint;
|
|
}
|
|
}
|
|
localPoint=history.GetTransform(depth).TransformPoint(globalPoint);
|
|
insideCode=Inside(history.GetVolume(depth),
|
|
history.GetReplicaNo(depth),
|
|
localPoint);
|
|
// If outside level, set localPoint = coordinates in reference system
|
|
// of *previous* level - location code in navigator will back up one
|
|
// level [And also manage blocking]
|
|
if (insideCode==kOutside||insideCode==kSurface&&exiting)
|
|
{
|
|
localPoint=goodPoint;
|
|
}
|
|
}
|
|
|
|
return insideCode;
|
|
}
|
|
|