Gabriele Cosmo
140 lines
4.2 KiB
Plaintext
140 lines
4.2 KiB
Plaintext
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4VoxelNavigation.icc,v 1.4 2000/11/20 18:59:44 gcosmo Exp $
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// GEANT4 tag $Name: geant4-03-00 $
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//
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//
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// class G4VoxelNavigation Inline implementation
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inline
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G4VoxelNavigation::G4VoxelNavigation()
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: fVoxelDepth(-1),
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fVoxelAxisStack(kNavigatorVoxelStackMax),
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fVoxelNoSlicesStack(kNavigatorVoxelStackMax),
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fVoxelSliceWidthStack(kNavigatorVoxelStackMax),
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fVoxelNodeNoStack(kNavigatorVoxelStackMax),
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fVoxelHeaderStack(kNavigatorVoxelStackMax),
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fVoxelNode(0)
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{
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}
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inline
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G4SmartVoxelNode*
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G4VoxelNavigation::VoxelLocate(G4SmartVoxelHeader *pHead,
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const G4ThreeVector &localPoint)
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{
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G4SmartVoxelHeader *targetVoxelHeader=pHead;
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G4SmartVoxelNode *targetVoxelNode=0;
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G4SmartVoxelProxy *sampleProxy;
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EAxis targetHeaderAxis;
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G4double targetHeaderMin,targetHeaderNodeWidth;
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G4int targetHeaderNoSlices,targetNodeNo;
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fVoxelDepth=0;
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while (!targetVoxelNode)
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{
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targetHeaderAxis=targetVoxelHeader->GetAxis();
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targetHeaderNoSlices=targetVoxelHeader->GetNoSlices();
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targetHeaderMin=targetVoxelHeader->GetMinExtent();
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targetHeaderNodeWidth= (targetVoxelHeader->GetMaxExtent()
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-targetHeaderMin)/targetHeaderNoSlices;
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targetNodeNo=G4int((localPoint(targetHeaderAxis)
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-targetHeaderMin)/targetHeaderNodeWidth);
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// Rounding protection
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if (targetNodeNo<0)
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{
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targetNodeNo=0;
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}
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else if (targetNodeNo>=targetHeaderNoSlices)
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{
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targetNodeNo=targetHeaderNoSlices-1;
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}
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// Stack info for stepping
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fVoxelAxisStack(fVoxelDepth)=targetHeaderAxis;
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fVoxelNoSlicesStack(fVoxelDepth)=targetHeaderNoSlices;
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fVoxelSliceWidthStack(fVoxelDepth)=targetHeaderNodeWidth;
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fVoxelNodeNoStack(fVoxelDepth)=targetNodeNo;
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fVoxelHeaderStack(fVoxelDepth)=targetVoxelHeader;
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sampleProxy=targetVoxelHeader->GetSlice(targetNodeNo);
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if (sampleProxy->IsNode())
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{
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targetVoxelNode=sampleProxy->GetNode();
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}
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else
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{
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targetVoxelHeader=sampleProxy->GetHeader();
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fVoxelDepth++;
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}
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}
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fVoxelNode=targetVoxelNode;
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return targetVoxelNode;
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}
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inline
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G4bool G4VoxelNavigation::LevelLocate(G4NavigationHistory& history,
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const G4VPhysicalVolume *blockedVol,
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const G4int,
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const G4ThreeVector &globalPoint,
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const G4ThreeVector* globalDirection,
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const G4bool pLocatedOnEdge,
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G4ThreeVector &localPoint)
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{
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G4SmartVoxelHeader *targetVoxelHeader;
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G4SmartVoxelNode *targetVoxelNode;
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G4VPhysicalVolume *targetPhysical,*samplePhysical;
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G4LogicalVolume *targetLogical;
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G4VSolid *sampleSolid;
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G4ThreeVector samplePoint;
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G4int targetNoDaughters,sampleNo;
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targetPhysical=history.GetTopVolume();
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targetLogical=targetPhysical->GetLogicalVolume();
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targetVoxelHeader=targetLogical->GetVoxelHeader();
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// localPoint=history.GetTopTransform().TransformPoint(globalPoint);
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// Find the voxel containing the point
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targetVoxelNode=VoxelLocate(targetVoxelHeader,localPoint);
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targetNoDaughters=targetVoxelNode->GetNoContained();
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if (targetNoDaughters==0) return false;
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//
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// Search daughters in volume
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//
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for (sampleNo=targetNoDaughters-1;sampleNo>=0;sampleNo--)
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{
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samplePhysical=targetLogical->
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GetDaughter(targetVoxelNode->
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GetVolume(sampleNo));
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if (samplePhysical!=blockedVol)
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{
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// Setup volume with mother ptr
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samplePhysical->Setup(targetPhysical);
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history.NewLevel(samplePhysical,kNormal,samplePhysical->GetCopyNo());
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sampleSolid=samplePhysical->GetLogicalVolume()->GetSolid();
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samplePoint=history.GetTopTransform().TransformPoint(globalPoint);
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if( G4AuxiliaryNavServices::
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CheckPointOnSurface(sampleSolid, samplePoint, globalDirection,
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history.GetTopTransform(), pLocatedOnEdge)
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)
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{
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// Enter this daughter
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// blockedVol=0;
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localPoint=samplePoint;
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return true;
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}
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else
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{
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history.BackLevel();
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}
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}
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}
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return false;
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}
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